diff --git a/Makefile b/Makefile
index 066a8977fa99d4..6f596e155f7b26 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0
 VERSION = 6
 PATCHLEVEL = 1
-SUBLEVEL = 184
+SUBLEVEL = 185
 EXTRAVERSION =
 NAME = Curry Ramen
 
diff --git a/drivers/block/null_blk/zoned.c b/drivers/block/null_blk/zoned.c
index 206c2a7a5100e3..9255fbb319ab65 100644
--- a/drivers/block/null_blk/zoned.c
+++ b/drivers/block/null_blk/zoned.c
@@ -16,6 +16,8 @@ static inline sector_t mb_to_sects(unsigned long mb)
 
 static inline unsigned int null_zone_no(struct nullb_device *dev, sector_t sect)
 {
+	if (WARN_ON_ONCE(!dev->zone_size_sects))
+		return 0;
 	return sect >> ilog2(dev->zone_size_sects);
 }
 
@@ -65,8 +67,8 @@ int null_init_zoned_dev(struct nullb_device *dev, struct request_queue *q)
 	sector_t sector = 0;
 	unsigned int i;
 
-	if (!is_power_of_2(dev->zone_size)) {
-		pr_err("zone_size must be power-of-two\n");
+	if (!dev->zone_size || !is_power_of_2(dev->zone_size)) {
+		pr_err("zone_size must be non-zero power-of-two\n");
 		return -EINVAL;
 	}
 	if (dev->zone_size > dev->size) {
@@ -97,6 +99,10 @@ int null_init_zoned_dev(struct nullb_device *dev, struct request_queue *q)
 	zone_capacity_sects = mb_to_sects(dev->zone_capacity);
 	dev_capacity_sects = mb_to_sects(dev->size);
 	dev->zone_size_sects = mb_to_sects(dev->zone_size);
+	if (!dev->zone_size_sects) {
+		pr_err("zone_size too large or too small, leads to zero sectors\n");
+		return -EINVAL;
+	}
 	dev->nr_zones = round_up(dev_capacity_sects, dev->zone_size_sects)
 		>> ilog2(dev->zone_size_sects);
 
diff --git a/drivers/gpio/gpio-ml-ioh.c b/drivers/gpio/gpio-ml-ioh.c
index 48e3768a830e7d..47099428284495 100644
--- a/drivers/gpio/gpio-ml-ioh.c
+++ b/drivers/gpio/gpio-ml-ioh.c
@@ -84,7 +84,7 @@ struct ioh_gpio {
 	u32 gpio_use_sel;
 	int ch;
 	int irq_base;
-	spinlock_t spinlock;
+	raw_spinlock_t spinlock;
 };
 
 static const int num_ports[] = {6, 12, 16, 16, 15, 16, 16, 12};
@@ -95,7 +95,7 @@ static void ioh_gpio_set(struct gpio_chip *gpio, unsigned nr, int val)
 	struct ioh_gpio *chip =	gpiochip_get_data(gpio);
 	unsigned long flags;
 
-	spin_lock_irqsave(&chip->spinlock, flags);
+	raw_spin_lock_irqsave(&chip->spinlock, flags);
 	reg_val = ioread32(&chip->reg->regs[chip->ch].po);
 	if (val)
 		reg_val |= BIT(nr);
@@ -103,7 +103,7 @@ static void ioh_gpio_set(struct gpio_chip *gpio, unsigned nr, int val)
 		reg_val &= ~BIT(nr);
 
 	iowrite32(reg_val, &chip->reg->regs[chip->ch].po);
-	spin_unlock_irqrestore(&chip->spinlock, flags);
+	raw_spin_unlock_irqrestore(&chip->spinlock, flags);
 }
 
 static int ioh_gpio_get(struct gpio_chip *gpio, unsigned nr)
@@ -121,7 +121,7 @@ static int ioh_gpio_direction_output(struct gpio_chip *gpio, unsigned nr,
 	u32 reg_val;
 	unsigned long flags;
 
-	spin_lock_irqsave(&chip->spinlock, flags);
+	raw_spin_lock_irqsave(&chip->spinlock, flags);
 	pm = ioread32(&chip->reg->regs[chip->ch].pm);
 	pm &= BIT(num_ports[chip->ch]) - 1;
 	pm |= BIT(nr);
@@ -134,7 +134,7 @@ static int ioh_gpio_direction_output(struct gpio_chip *gpio, unsigned nr,
 		reg_val &= ~BIT(nr);
 	iowrite32(reg_val, &chip->reg->regs[chip->ch].po);
 
-	spin_unlock_irqrestore(&chip->spinlock, flags);
+	raw_spin_unlock_irqrestore(&chip->spinlock, flags);
 
 	return 0;
 }
@@ -145,12 +145,12 @@ static int ioh_gpio_direction_input(struct gpio_chip *gpio, unsigned nr)
 	u32 pm;
 	unsigned long flags;
 
-	spin_lock_irqsave(&chip->spinlock, flags);
+	raw_spin_lock_irqsave(&chip->spinlock, flags);
 	pm = ioread32(&chip->reg->regs[chip->ch].pm);
 	pm &= BIT(num_ports[chip->ch]) - 1;
 	pm &= ~BIT(nr);
 	iowrite32(pm, &chip->reg->regs[chip->ch].pm);
-	spin_unlock_irqrestore(&chip->spinlock, flags);
+	raw_spin_unlock_irqrestore(&chip->spinlock, flags);
 
 	return 0;
 }
@@ -254,7 +254,7 @@ static int ioh_irq_type(struct irq_data *d, unsigned int type)
 	dev_dbg(chip->dev, "%s:irq=%d type=%d ch=%d pos=%d type=%d\n",
 		__func__, irq, type, ch, im_pos, type);
 
-	spin_lock_irqsave(&chip->spinlock, flags);
+	raw_spin_lock_irqsave(&chip->spinlock, flags);
 
 	switch (type) {
 	case IRQ_TYPE_EDGE_RISING:
@@ -294,7 +294,7 @@ static int ioh_irq_type(struct irq_data *d, unsigned int type)
 	ien = ioread32(&chip->reg->regs[chip->ch].ien);
 	iowrite32(ien | BIT(ch), &chip->reg->regs[chip->ch].ien);
 end:
-	spin_unlock_irqrestore(&chip->spinlock, flags);
+	raw_spin_unlock_irqrestore(&chip->spinlock, flags);
 
 	return 0;
 }
@@ -324,11 +324,11 @@ static void ioh_irq_disable(struct irq_data *d)
 	unsigned long flags;
 	u32 ien;
 
-	spin_lock_irqsave(&chip->spinlock, flags);
+	raw_spin_lock_irqsave(&chip->spinlock, flags);
 	ien = ioread32(&chip->reg->regs[chip->ch].ien);
 	ien &= ~BIT(d->irq - chip->irq_base);
 	iowrite32(ien, &chip->reg->regs[chip->ch].ien);
-	spin_unlock_irqrestore(&chip->spinlock, flags);
+	raw_spin_unlock_irqrestore(&chip->spinlock, flags);
 }
 
 static void ioh_irq_enable(struct irq_data *d)
@@ -338,11 +338,11 @@ static void ioh_irq_enable(struct irq_data *d)
 	unsigned long flags;
 	u32 ien;
 
-	spin_lock_irqsave(&chip->spinlock, flags);
+	raw_spin_lock_irqsave(&chip->spinlock, flags);
 	ien = ioread32(&chip->reg->regs[chip->ch].ien);
 	ien |= BIT(d->irq - chip->irq_base);
 	iowrite32(ien, &chip->reg->regs[chip->ch].ien);
-	spin_unlock_irqrestore(&chip->spinlock, flags);
+	raw_spin_unlock_irqrestore(&chip->spinlock, flags);
 }
 
 static irqreturn_t ioh_gpio_handler(int irq, void *dev_id)
@@ -438,7 +438,7 @@ static int ioh_gpio_probe(struct pci_dev *pdev,
 		chip->base = base;
 		chip->reg = chip->base;
 		chip->ch = i;
-		spin_lock_init(&chip->spinlock);
+		raw_spin_lock_init(&chip->spinlock);
 		ioh_gpio_setup(chip, num_ports[i]);
 		ret = devm_gpiochip_add_data(dev, &chip->gpio, chip);
 		if (ret) {
@@ -482,9 +482,9 @@ static int __maybe_unused ioh_gpio_suspend(struct device *dev)
 	struct ioh_gpio *chip = dev_get_drvdata(dev);
 	unsigned long flags;
 
-	spin_lock_irqsave(&chip->spinlock, flags);
+	raw_spin_lock_irqsave(&chip->spinlock, flags);
 	ioh_gpio_save_reg_conf(chip);
-	spin_unlock_irqrestore(&chip->spinlock, flags);
+	raw_spin_unlock_irqrestore(&chip->spinlock, flags);
 
 	return 0;
 }
@@ -494,11 +494,11 @@ static int __maybe_unused ioh_gpio_resume(struct device *dev)
 	struct ioh_gpio *chip = dev_get_drvdata(dev);
 	unsigned long flags;
 
-	spin_lock_irqsave(&chip->spinlock, flags);
+	raw_spin_lock_irqsave(&chip->spinlock, flags);
 	iowrite32(0x01, &chip->reg->srst);
 	iowrite32(0x00, &chip->reg->srst);
 	ioh_gpio_restore_reg_conf(chip);
-	spin_unlock_irqrestore(&chip->spinlock, flags);
+	raw_spin_unlock_irqrestore(&chip->spinlock, flags);
 
 	return 0;
 }
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
index dcf7cd290b8899..e9d51002001a40 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
@@ -247,6 +247,10 @@ static int amdgpu_cs_pass1(struct amdgpu_cs_parser *p,
 			if (size < sizeof(struct drm_amdgpu_cs_chunk_fence))
 				goto free_partial_kdata;
 
+			/* Only a single user fence is allowed to simplify handling. */
+			if (p->uf_entry.tv.bo)
+				goto free_partial_kdata;
+
 			ret = amdgpu_cs_p1_user_fence(p, p->chunks[i].kdata,
 						      &uf_offset);
 			if (ret)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 45636d3118c48f..55d869ea718a73 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -1375,6 +1375,31 @@ bool amdgpu_device_pcie_dynamic_switching_supported(void)
 	return true;
 }
 
+/*
+ * Some dGPUs expose their display endpoint below an internal PCIe switch.
+ * Use the switch upstream port to query the host-facing link.
+ */
+static struct pci_dev *amdgpu_device_get_aspm_pdev(struct amdgpu_device *adev)
+{
+	struct pci_dev *swds, *swus;
+
+	swds = pci_upstream_bridge(adev->pdev);
+	if (!swds ||
+	    (swds->vendor != PCI_VENDOR_ID_ATI &&
+	     swds->vendor != PCI_VENDOR_ID_AMD) ||
+	    pci_pcie_type(swds) != PCI_EXP_TYPE_DOWNSTREAM)
+		return adev->pdev;
+
+	swus = pci_upstream_bridge(swds);
+	if (!swus ||
+	    (swus->vendor != PCI_VENDOR_ID_ATI &&
+	     swus->vendor != PCI_VENDOR_ID_AMD) ||
+	    pci_pcie_type(swus) != PCI_EXP_TYPE_UPSTREAM)
+		return adev->pdev;
+
+	return swus;
+}
+
 /**
  * amdgpu_device_should_use_aspm - check if the device should program ASPM
  *
@@ -1387,6 +1412,9 @@ bool amdgpu_device_pcie_dynamic_switching_supported(void)
  */
 bool amdgpu_device_should_use_aspm(struct amdgpu_device *adev)
 {
+	struct pci_dev *aspm_pdev, *parent;
+	bool enabled;
+
 	switch (amdgpu_aspm) {
 	case -1:
 		break;
@@ -1397,7 +1425,27 @@ bool amdgpu_device_should_use_aspm(struct amdgpu_device *adev)
 	default:
 		return false;
 	}
-	return pcie_aspm_enabled(adev->pdev);
+
+	/*
+	 * pcie_aspm_enabled() checks the link between its argument and
+	 * the immediate upstream bridge. Use SWUS for dGPUs with an
+	 * internal switch so that this is the host-facing link.
+	 */
+	aspm_pdev = amdgpu_device_get_aspm_pdev(adev);
+	parent = pci_upstream_bridge(aspm_pdev);
+	if (!parent) {
+		dev_dbg(adev->dev, "ASPM: no upstream PCIe link for %s\n",
+			pci_name(aspm_pdev));
+		return false;
+	}
+
+	enabled = pcie_aspm_enabled(aspm_pdev);
+	/* Report the exact link used for the automatic ASPM decision. */
+	dev_dbg(adev->dev, "ASPM: link %s <-> %s is %s\n",
+		pci_name(parent), pci_name(aspm_pdev),
+		enabled ? "enabled" : "disabled");
+
+	return enabled;
 }
 
 bool amdgpu_device_aspm_support_quirk(void)
diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index 7270561cce1cc1..0c3b694836aaaa 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -349,6 +349,9 @@ static int hid_add_field(struct hid_parser *parser, unsigned report_type, unsign
 
 static u32 item_udata(struct hid_item *item)
 {
+	if (item->format != HID_ITEM_FORMAT_SHORT)
+		return 0;
+
 	switch (item->size) {
 	case 1: return item->data.u8;
 	case 2: return item->data.u16;
@@ -359,6 +362,9 @@ static u32 item_udata(struct hid_item *item)
 
 static s32 item_sdata(struct hid_item *item)
 {
+	if (item->format != HID_ITEM_FORMAT_SHORT)
+		return 0;
+
 	switch (item->size) {
 	case 1: return item->data.s8;
 	case 2: return item->data.s16;
@@ -1910,13 +1916,14 @@ int hid_set_field(struct hid_field *field, unsigned offset, __s32 value)
 
 	size = field->report_size;
 
-	hid_dump_input(field->report->device, field->usage + offset, value);
-
 	if (offset >= field->report_count) {
 		hid_err(field->report->device, "offset (%d) exceeds report_count (%d)\n",
 				offset, field->report_count);
 		return -1;
 	}
+
+	hid_dump_input(field->report->device, field->usage + offset, value);
+
 	if (field->logical_minimum < 0) {
 		if (value != snto32(s32ton(value, size), size)) {
 			hid_err(field->report->device, "value %d is out of range\n", value);
diff --git a/drivers/hid/hid-hyperv.c b/drivers/hid/hid-hyperv.c
index bf77cfb723d5d6..b9f64e37448855 100644
--- a/drivers/hid/hid-hyperv.c
+++ b/drivers/hid/hid-hyperv.c
@@ -179,18 +179,32 @@ static void mousevsc_free_device(struct mousevsc_dev *device)
 }
 
 static void mousevsc_on_receive_device_info(struct mousevsc_dev *input_device,
-				struct synthhid_device_info *device_info)
+					    struct synthhid_device_info *device_info,
+					    u32 device_info_size)
 {
 	int ret = 0;
 	struct hid_descriptor *desc;
 	struct mousevsc_prt_msg ack;
+	size_t desc_offset;
+	size_t desc_size;
 
 	input_device->dev_info_status = -ENOMEM;
 
+	if (device_info_size < sizeof(*device_info)) {
+		input_device->dev_info_status = -EINVAL;
+		goto cleanup;
+	}
+
 	input_device->hid_dev_info = device_info->hid_dev_info;
 	desc = &device_info->hid_descriptor;
+	desc_offset = offsetof(struct synthhid_device_info, hid_descriptor);
+	desc_size = device_info_size - desc_offset;
 	if (desc->bLength == 0)
 		goto cleanup;
+	if (desc->bLength < sizeof(*desc) || desc->bLength > desc_size) {
+		input_device->dev_info_status = -EINVAL;
+		goto cleanup;
+	}
 
 	/* The pointer is not NULL when we resume from hibernation */
 	kfree(input_device->hid_desc);
@@ -205,6 +219,10 @@ static void mousevsc_on_receive_device_info(struct mousevsc_dev *input_device,
 		input_device->dev_info_status = -EINVAL;
 		goto cleanup;
 	}
+	if (input_device->report_desc_size > desc_size - desc->bLength) {
+		input_device->dev_info_status = -EINVAL;
+		goto cleanup;
+	}
 
 	/* The pointer is not NULL when we resume from hibernation */
 	kfree(input_device->report_desc);
@@ -285,14 +303,17 @@ static void mousevsc_on_receive(struct hv_device *device,
 		break;
 
 	case SYNTH_HID_INITIAL_DEVICE_INFO:
-		WARN_ON(pipe_msg->size < sizeof(struct hv_input_dev_info));
+		if (WARN_ON_ONCE(pipe_msg->size <
+				 sizeof(struct synthhid_device_info)))
+			break;
 
 		/*
 		 * Parse out the device info into device attr,
 		 * hid desc and report desc
 		 */
 		mousevsc_on_receive_device_info(input_dev,
-			(struct synthhid_device_info *)pipe_msg->data);
+						(struct synthhid_device_info *)pipe_msg->data,
+						pipe_msg->size);
 		break;
 	case SYNTH_HID_INPUT_REPORT:
 		input_report =
diff --git a/drivers/hid/hid-magicmouse.c b/drivers/hid/hid-magicmouse.c
index d5df2745f3da44..a92381a93f4174 100644
--- a/drivers/hid/hid-magicmouse.c
+++ b/drivers/hid/hid-magicmouse.c
@@ -384,6 +384,10 @@ static int magicmouse_raw_event(struct hid_device *hdev,
 	struct input_dev *input = msc->input;
 	int x = 0, y = 0, ii, clicks = 0, npoints;
 
+	/* Protect against zero sized recursive calls from DOUBLE_REPORT_ID */
+	if (size < 1)
+		return 0;
+
 	switch (data[0]) {
 	case TRACKPAD_REPORT_ID:
 	case TRACKPAD2_BT_REPORT_ID:
@@ -484,6 +488,18 @@ static int magicmouse_raw_event(struct hid_device *hdev,
 		/* Sometimes the trackpad sends two touch reports in one
 		 * packet.
 		 */
+
+		/* Ensure that we have at least 2 elements (report type and size) */
+		if (size < 2)
+			return 0;
+
+		if (size < data[1] + 2) {
+			hid_warn(hdev,
+				 "received report length (%d) was smaller than specified (%d)",
+				 size, data[1] + 2);
+			return 0;
+		}
+
 		magicmouse_raw_event(hdev, report, data + 2, data[1]);
 		magicmouse_raw_event(hdev, report, data + 2 + data[1],
 			size - 2 - data[1]);
@@ -862,6 +878,16 @@ static int magicmouse_probe(struct hid_device *hdev,
 		return ret;
 	}
 
+	/*
+	 * When hidinput_connect() fails it frees every input device it
+	 * created, but that does not fail hid_hw_start(): the core simply
+	 * does not claim an input. msc->input, cached in ->input_mapping
+	 * while the report descriptor was parsed, would then be a dangling
+	 * pointer that passes every NULL check. Trust the core's claim.
+	 */
+	if (!(hdev->claimed & HID_CLAIMED_INPUT))
+		msc->input = NULL;
+
 	if (is_usb_magicmouse2(id->vendor, id->product) ||
 	    is_usb_magictrackpad2(id->vendor, id->product)) {
 		timer_setup(&msc->battery_timer, magicmouse_battery_timer_tick, 0);
diff --git a/drivers/hid/hid-nintendo.c b/drivers/hid/hid-nintendo.c
index df07e3ae0ffb4b..434fefb8482568 100644
--- a/drivers/hid/hid-nintendo.c
+++ b/drivers/hid/hid-nintendo.c
@@ -2140,7 +2140,12 @@ static int joycon_ctlr_read_handler(struct joycon_ctlr *ctlr, u8 *data,
 {
 	if (data[0] == JC_INPUT_SUBCMD_REPLY || data[0] == JC_INPUT_IMU_DATA ||
 	    data[0] == JC_INPUT_MCU_DATA) {
-		if (size >= 12) /* make sure it contains the input report */
+		/*
+		 * The whole struct is cast and parsed below, including the
+		 * IMU/subcmd union, not just the 12-byte partial header this
+		 * used to check for.
+		 */
+		if (size >= sizeof(struct joycon_input_report))
 			joycon_parse_report(ctlr,
 					    (struct joycon_input_report *)data);
 	}
diff --git a/drivers/hid/hid-sensor-custom.c b/drivers/hid/hid-sensor-custom.c
index 602465ad274587..77cc778aef41af 100644
--- a/drivers/hid/hid-sensor-custom.c
+++ b/drivers/hid/hid-sensor-custom.c
@@ -910,26 +910,26 @@ static int hid_sensor_custom_probe(struct platform_device *pdev)
 		return ret;
 	}
 
-	ret = sysfs_create_group(&sensor_inst->pdev->dev.kobj,
-				 &enable_sensor_attr_group);
+	ret = hid_sensor_custom_add_attributes(sensor_inst);
 	if (ret)
 		goto err_remove_callback;
 
-	ret = hid_sensor_custom_add_attributes(sensor_inst);
+	ret = sysfs_create_group(&sensor_inst->pdev->dev.kobj,
+				 &enable_sensor_attr_group);
 	if (ret)
-		goto err_remove_group;
+		goto err_remove_attributes;
 
 	ret = hid_sensor_custom_dev_if_add(sensor_inst);
 	if (ret)
-		goto err_remove_attributes;
+		goto err_remove_group;
 
 	return 0;
 
-err_remove_attributes:
-	hid_sensor_custom_remove_attributes(sensor_inst);
 err_remove_group:
 	sysfs_remove_group(&sensor_inst->pdev->dev.kobj,
 			   &enable_sensor_attr_group);
+err_remove_attributes:
+	hid_sensor_custom_remove_attributes(sensor_inst);
 err_remove_callback:
 	sensor_hub_remove_callback(hsdev, hsdev->usage);
 
@@ -947,9 +947,10 @@ static int hid_sensor_custom_remove(struct platform_device *pdev)
 	}
 
 	hid_sensor_custom_dev_if_remove(sensor_inst);
-	hid_sensor_custom_remove_attributes(sensor_inst);
+	/* Remove enable_sensor first as it uses fields via power_state/report_state. */
 	sysfs_remove_group(&sensor_inst->pdev->dev.kobj,
 			   &enable_sensor_attr_group);
+	hid_sensor_custom_remove_attributes(sensor_inst);
 	sensor_hub_remove_callback(hsdev, hsdev->usage);
 
 	return 0;
diff --git a/drivers/input/keyboard/atkbd.c b/drivers/input/keyboard/atkbd.c
index 94a7de558fcd66..be093721668edc 100644
--- a/drivers/input/keyboard/atkbd.c
+++ b/drivers/input/keyboard/atkbd.c
@@ -1925,17 +1925,32 @@ static const struct dmi_system_id atkbd_dmi_quirk_table[] __initconst = {
 		.callback = atkbd_deactivate_fixup,
 	},
 	{
-		/* Lenovo Yoga Air 14 (83QK) */
 		.matches = {
-			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
-			DMI_MATCH(DMI_PRODUCT_NAME, "83QK"),
+			DMI_MATCH(DMI_SYS_VENDOR, "HONOR"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "BCC-N"),
 		},
 		.callback = atkbd_deactivate_fixup,
 	},
 	{
 		.matches = {
 			DMI_MATCH(DMI_SYS_VENDOR, "HONOR"),
-			DMI_MATCH(DMI_PRODUCT_NAME, "BCC-N"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "FMB-P"),
+		},
+		.callback = atkbd_deactivate_fixup,
+	},
+	{
+		/* HONOR MagicBook Pro 14 2026 */
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "HONOR"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "ZQC-P"),
+		},
+		.callback = atkbd_deactivate_fixup,
+	},
+	{
+		/* Lenovo Yoga Air 14 (83QK) */
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "83QK"),
 		},
 		.callback = atkbd_deactivate_fixup,
 	},
diff --git a/drivers/input/mouse/byd.c b/drivers/input/mouse/byd.c
index 221a553f45cd88..cb49f388830205 100644
--- a/drivers/input/mouse/byd.c
+++ b/drivers/input/mouse/byd.c
@@ -426,7 +426,7 @@ static void byd_disconnect(struct psmouse *psmouse)
 	struct byd_data *priv = psmouse->private;
 
 	if (priv) {
-		del_timer(&priv->timer);
+		timer_shutdown_sync(&priv->timer);
 		kfree(psmouse->private);
 		psmouse->private = NULL;
 	}
diff --git a/drivers/misc/fastrpc.c b/drivers/misc/fastrpc.c
index c1de0644c370c3..6ea071c1098027 100644
--- a/drivers/misc/fastrpc.c
+++ b/drivers/misc/fastrpc.c
@@ -1657,30 +1657,14 @@ static int fastrpc_get_dsp_info(struct fastrpc_user *fl, char __user *argp)
 	return 0;
 }
 
-static int fastrpc_req_munmap_impl(struct fastrpc_user *fl,
-				   struct fastrpc_req_munmap *req)
+static int fastrpc_req_munmap_impl(struct fastrpc_user *fl, struct fastrpc_buf *buf)
 {
 	struct fastrpc_invoke_args args[1] = { [0] = { 0 } };
-	struct fastrpc_buf *buf = NULL, *iter, *b;
 	struct fastrpc_munmap_req_msg req_msg;
 	struct device *dev = fl->sctx->dev;
 	int err;
 	u32 sc;
 
-	spin_lock(&fl->lock);
-	list_for_each_entry_safe(iter, b, &fl->mmaps, node) {
-		if ((iter->raddr == req->vaddrout) && (iter->size == req->size)) {
-			buf = iter;
-			break;
-		}
-	}
-	spin_unlock(&fl->lock);
-
-	if (!buf) {
-		dev_err(dev, "mmap not in list\n");
-		return -EINVAL;
-	}
-
 	req_msg.pgid = fl->tgid;
 	req_msg.size = buf->size;
 	req_msg.vaddr = buf->raddr;
@@ -1693,9 +1677,6 @@ static int fastrpc_req_munmap_impl(struct fastrpc_user *fl,
 				      &args[0]);
 	if (!err) {
 		dev_dbg(dev, "unmmap\tpt 0x%09lx OK\n", buf->raddr);
-		spin_lock(&fl->lock);
-		list_del(&buf->node);
-		spin_unlock(&fl->lock);
 		fastrpc_buf_free(buf);
 	} else {
 		dev_err(dev, "unmmap\tpt 0x%09lx ERROR\n", buf->raddr);
@@ -1706,12 +1687,38 @@ static int fastrpc_req_munmap_impl(struct fastrpc_user *fl,
 
 static int fastrpc_req_munmap(struct fastrpc_user *fl, char __user *argp)
 {
+	struct fastrpc_buf *buf = NULL, *iter, *b;
 	struct fastrpc_req_munmap req;
+	struct device *dev = fl->sctx->dev;
+	int err;
 
 	if (copy_from_user(&req, argp, sizeof(req)))
 		return -EFAULT;
 
-	return fastrpc_req_munmap_impl(fl, &req);
+	spin_lock(&fl->lock);
+	list_for_each_entry_safe(iter, b, &fl->mmaps, node) {
+		if ((iter->raddr == req.vaddrout) && (iter->size == req.size)) {
+			list_del(&iter->node);
+			buf = iter;
+			break;
+		}
+	}
+	spin_unlock(&fl->lock);
+
+	if (!buf) {
+		dev_err(dev, "mmap\t\tpt 0x%09llx [len 0x%08llx] not in list\n",
+			req.vaddrout, req.size);
+		return -EINVAL;
+	}
+
+	err = fastrpc_req_munmap_impl(fl, buf);
+	if (err) {
+		spin_lock(&fl->lock);
+		list_add_tail(&buf->node, &fl->mmaps);
+		spin_unlock(&fl->lock);
+	}
+
+	return err;
 }
 
 static int fastrpc_req_mmap(struct fastrpc_user *fl, char __user *argp)
@@ -1720,7 +1727,6 @@ static int fastrpc_req_mmap(struct fastrpc_user *fl, char __user *argp)
 	struct fastrpc_buf *buf = NULL;
 	struct fastrpc_mmap_req_msg req_msg;
 	struct fastrpc_mmap_rsp_msg rsp_msg;
-	struct fastrpc_req_munmap req_unmap;
 	struct fastrpc_phy_page pages;
 	struct fastrpc_req_mmap req;
 	struct device *dev = fl->sctx->dev;
@@ -1768,7 +1774,8 @@ static int fastrpc_req_mmap(struct fastrpc_user *fl, char __user *argp)
 				      &args[0]);
 	if (err) {
 		dev_err(dev, "mmap error (len 0x%08llx)\n", buf->size);
-		goto err_invoke;
+		fastrpc_buf_free(buf);
+		return err;
 	}
 
 	/* update the buffer to be able to deallocate the memory on the DSP */
@@ -1782,11 +1789,8 @@ static int fastrpc_req_mmap(struct fastrpc_user *fl, char __user *argp)
 	spin_unlock(&fl->lock);
 
 	if (copy_to_user((void __user *)argp, &req, sizeof(req))) {
-		/* unmap the memory and release the buffer */
-		req_unmap.vaddrout = buf->raddr;
-		req_unmap.size = buf->size;
-		fastrpc_req_munmap_impl(fl, &req_unmap);
-		return -EFAULT;
+		err = -EFAULT;
+		goto err_assign;
 	}
 
 	dev_dbg(dev, "mmap\t\tpt 0x%09lx OK [len 0x%08llx]\n",
@@ -1794,8 +1798,8 @@ static int fastrpc_req_mmap(struct fastrpc_user *fl, char __user *argp)
 
 	return 0;
 
-err_invoke:
-	fastrpc_buf_free(buf);
+err_assign:
+	fastrpc_req_munmap_impl(fl, buf);
 
 	return err;
 }
diff --git a/drivers/net/can/dev/skb.c b/drivers/net/can/dev/skb.c
index 3ebd4f779b9bdf..0da615afa04de7 100644
--- a/drivers/net/can/dev/skb.c
+++ b/drivers/net/can/dev/skb.c
@@ -202,7 +202,6 @@ static void init_can_skb_reserve(struct sk_buff *skb)
 	skb_reset_transport_header(skb);
 
 	can_skb_reserve(skb);
-	can_skb_prv(skb)->skbcnt = 0;
 }
 
 struct sk_buff *alloc_can_skb(struct net_device *dev, struct can_frame **cf)
@@ -312,7 +311,6 @@ static bool can_skb_headroom_valid(struct net_device *dev, struct sk_buff *skb)
 	if (skb->ip_summed == CHECKSUM_NONE) {
 		/* init headroom */
 		can_skb_prv(skb)->ifindex = dev->ifindex;
-		can_skb_prv(skb)->skbcnt = 0;
 
 		skb->ip_summed = CHECKSUM_UNNECESSARY;
 
diff --git a/drivers/net/ntb_netdev.c b/drivers/net/ntb_netdev.c
index 535dc5b2901fca..95193a4ab0912a 100644
--- a/drivers/net/ntb_netdev.c
+++ b/drivers/net/ntb_netdev.c
@@ -100,7 +100,7 @@ static void ntb_netdev_rx_handler(struct ntb_transport_qp *qp, void *qp_data,
 				  void *data, int len)
 {
 	struct net_device *ndev = qp_data;
-	struct sk_buff *skb;
+	struct sk_buff *skb, *new_skb;
 	int rc;
 
 	skb = data;
@@ -115,6 +115,12 @@ static void ntb_netdev_rx_handler(struct ntb_transport_qp *qp, void *qp_data,
 		goto enqueue_again;
 	}
 
+	new_skb = netdev_alloc_skb(ndev, ndev->mtu + ETH_HLEN);
+	if (!new_skb) {
+		ndev->stats.rx_dropped++;
+		goto enqueue_again;
+	}
+
 	skb_put(skb, len);
 	skb->protocol = eth_type_trans(skb, ndev);
 	skb->ip_summed = CHECKSUM_NONE;
@@ -127,12 +133,7 @@ static void ntb_netdev_rx_handler(struct ntb_transport_qp *qp, void *qp_data,
 		ndev->stats.rx_bytes += len;
 	}
 
-	skb = netdev_alloc_skb(ndev, ndev->mtu + ETH_HLEN);
-	if (!skb) {
-		ndev->stats.rx_errors++;
-		ndev->stats.rx_frame_errors++;
-		return;
-	}
+	skb = new_skb;
 
 enqueue_again:
 	rc = ntb_transport_rx_enqueue(qp, skb, skb->data, ndev->mtu + ETH_HLEN);
diff --git a/drivers/net/usb/rndis_host.c b/drivers/net/usb/rndis_host.c
index 7b3739b29c8f72..1d7e9a1a3cf1d4 100644
--- a/drivers/net/usb/rndis_host.c
+++ b/drivers/net/usb/rndis_host.c
@@ -14,6 +14,7 @@
 #include <linux/usb/cdc.h>
 #include <linux/usb/usbnet.h>
 #include <linux/usb/rndis_host.h>
+#include <linux/overflow.h>
 
 
 /*
@@ -506,6 +507,7 @@ int rndis_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
 		struct rndis_data_hdr	*hdr = (void *)skb->data;
 		struct sk_buff		*skb2;
 		u32			msg_type, msg_len, data_offset, data_len;
+		u32			overflow_check;
 
 		msg_type = le32_to_cpu(hdr->msg_type);
 		msg_len = le32_to_cpu(hdr->msg_len);
@@ -514,7 +516,9 @@ int rndis_rx_fixup(struct usbnet *dev, struct sk_buff *skb)
 
 		/* don't choke if we see oob, per-packet data, etc */
 		if (unlikely(msg_type != RNDIS_MSG_PACKET || skb->len < msg_len
-				|| (data_offset + data_len + 8) > msg_len)) {
+				|| (data_offset + data_len + 8) > msg_len
+				|| check_add_overflow(data_offset, data_len, &overflow_check)
+				|| check_add_overflow(overflow_check, 8, &overflow_check))) {
 			dev->net->stats.rx_frame_errors++;
 			netdev_dbg(dev->net, "bad rndis message %d/%d/%d/%d, len %d\n",
 				   le32_to_cpu(hdr->msg_type),
diff --git a/drivers/nfc/fdp/i2c.c b/drivers/nfc/fdp/i2c.c
index 1e0f2297f9c665..e878c7a798268c 100644
--- a/drivers/nfc/fdp/i2c.c
+++ b/drivers/nfc/fdp/i2c.c
@@ -166,9 +166,36 @@ static int fdp_nci_i2c_read(struct fdp_i2c_phy *phy, struct sk_buff **skb)
 		/* Packet that contains a length */
 		if (tmp[0] == 0 && tmp[1] == 0) {
 			phy->next_read_size = (tmp[2] << 8) + tmp[3] + 3;
+
+			/*
+			 * next_read_size is taken from the device and is used
+			 * as the i2c_master_recv() count for the next packet
+			 * and as the data skb size. A value above the receive
+			 * buffer overflows tmp[]; one below the minimum frame
+			 * size runs the header/LRC strip and the length-field
+			 * read past a short receive. Either way the packet is
+			 * corrupt: drop it and force resynchronization.
+			 */
+			if (phy->next_read_size < FDP_NCI_I2C_MIN_PAYLOAD ||
+			    phy->next_read_size > FDP_NCI_I2C_MAX_PAYLOAD) {
+				dev_dbg(&client->dev, "%s: corrupted packet\n",
+					__func__);
+				phy->next_read_size = FDP_NCI_I2C_MIN_PAYLOAD;
+				goto flush;
+			}
 		} else {
 			phy->next_read_size = FDP_NCI_I2C_MIN_PAYLOAD;
 
+			/*
+			 * Only one data packet is delivered per call; if the
+			 * device sends another, do not overwrite and leak the
+			 * skb allocated for the previous one.
+			 */
+			if (*skb) {
+				kfree_skb(*skb);
+				*skb = NULL;
+			}
+
 			*skb = alloc_skb(len, GFP_KERNEL);
 			if (*skb == NULL) {
 				r = -ENOMEM;
diff --git a/drivers/nfc/microread/microread.c b/drivers/nfc/microread/microread.c
index bb4d029bb88853..b0e483ee7eec43 100644
--- a/drivers/nfc/microread/microread.c
+++ b/drivers/nfc/microread/microread.c
@@ -483,13 +483,19 @@ static void microread_target_discovered(struct nfc_hci_dev *hdev, u8 gate,
 
 	switch (gate) {
 	case MICROREAD_GATE_ID_MREAD_ISO_A:
+		if (skb->len <= MICROREAD_EMCF_A_LEN) {
+			r = -EINVAL;
+			goto exit_free;
+		}
+
 		targets->supported_protocols =
 		      nfc_hci_sak_to_protocol(skb->data[MICROREAD_EMCF_A_SAK]);
 		targets->sens_res =
 			 be16_to_cpu(*(u16 *)&skb->data[MICROREAD_EMCF_A_ATQA]);
 		targets->sel_res = skb->data[MICROREAD_EMCF_A_SAK];
 		targets->nfcid1_len = skb->data[MICROREAD_EMCF_A_LEN];
-		if (targets->nfcid1_len > sizeof(targets->nfcid1)) {
+		if (targets->nfcid1_len > sizeof(targets->nfcid1) ||
+		    targets->nfcid1_len > skb->len - MICROREAD_EMCF_A_UID) {
 			r = -EINVAL;
 			goto exit_free;
 		}
@@ -497,13 +503,19 @@ static void microread_target_discovered(struct nfc_hci_dev *hdev, u8 gate,
 		       targets->nfcid1_len);
 		break;
 	case MICROREAD_GATE_ID_MREAD_ISO_A_3:
+		if (skb->len <= MICROREAD_EMCF_A3_LEN) {
+			r = -EINVAL;
+			goto exit_free;
+		}
+
 		targets->supported_protocols =
 		      nfc_hci_sak_to_protocol(skb->data[MICROREAD_EMCF_A3_SAK]);
 		targets->sens_res =
 			 be16_to_cpu(*(u16 *)&skb->data[MICROREAD_EMCF_A3_ATQA]);
 		targets->sel_res = skb->data[MICROREAD_EMCF_A3_SAK];
 		targets->nfcid1_len = skb->data[MICROREAD_EMCF_A3_LEN];
-		if (targets->nfcid1_len > sizeof(targets->nfcid1)) {
+		if (targets->nfcid1_len > sizeof(targets->nfcid1) ||
+		    targets->nfcid1_len > skb->len - MICROREAD_EMCF_A3_UID) {
 			r = -EINVAL;
 			goto exit_free;
 		}
@@ -511,11 +523,21 @@ static void microread_target_discovered(struct nfc_hci_dev *hdev, u8 gate,
 		       targets->nfcid1_len);
 		break;
 	case MICROREAD_GATE_ID_MREAD_ISO_B:
+		if (skb->len < MICROREAD_EMCF_B_UID + 4) {
+			r = -EINVAL;
+			goto exit_free;
+		}
+
 		targets->supported_protocols = NFC_PROTO_ISO14443_B_MASK;
 		memcpy(targets->nfcid1, &skb->data[MICROREAD_EMCF_B_UID], 4);
 		targets->nfcid1_len = 4;
 		break;
 	case MICROREAD_GATE_ID_MREAD_NFC_T1:
+		if (skb->len < MICROREAD_EMCF_T1_UID + 4) {
+			r = -EINVAL;
+			goto exit_free;
+		}
+
 		targets->supported_protocols = NFC_PROTO_JEWEL_MASK;
 		targets->sens_res =
 			le16_to_cpu(*(u16 *)&skb->data[MICROREAD_EMCF_T1_ATQA]);
@@ -523,6 +545,11 @@ static void microread_target_discovered(struct nfc_hci_dev *hdev, u8 gate,
 		targets->nfcid1_len = 4;
 		break;
 	case MICROREAD_GATE_ID_MREAD_NFC_T3:
+		if (skb->len < MICROREAD_EMCF_T3_UID + 8) {
+			r = -EINVAL;
+			goto exit_free;
+		}
+
 		targets->supported_protocols = NFC_PROTO_FELICA_MASK;
 		memcpy(targets->nfcid1, &skb->data[MICROREAD_EMCF_T3_UID], 8);
 		targets->nfcid1_len = 8;
diff --git a/drivers/nfc/pn533/pn533.c b/drivers/nfc/pn533/pn533.c
index 2e0871409926bb..f82eda9c73d140 100644
--- a/drivers/nfc/pn533/pn533.c
+++ b/drivers/nfc/pn533/pn533.c
@@ -2803,6 +2803,7 @@ void pn53x_common_clean(struct pn533 *priv)
 	destroy_workqueue(priv->wq);
 
 	skb_queue_purge(&priv->resp_q);
+	skb_queue_purge(&priv->fragment_skb);
 
 	list_for_each_entry_safe(cmd, n, &priv->cmd_queue, queue) {
 		list_del(&cmd->queue);
diff --git a/drivers/nfc/st21nfca/dep.c b/drivers/nfc/st21nfca/dep.c
index 1ec651e31064b1..e56a0117858363 100644
--- a/drivers/nfc/st21nfca/dep.c
+++ b/drivers/nfc/st21nfca/dep.c
@@ -207,6 +207,9 @@ static int st21nfca_tm_recv_atr_req(struct nfc_hci_dev *hdev,
 	if (atr_req->length < sizeof(struct st21nfca_atr_req))
 		return -EPROTO;
 
+	if (atr_req->length > skb->len)
+		return -EPROTO;
+
 	r = st21nfca_tm_send_atr_res(hdev, atr_req);
 	if (r)
 		return r;
diff --git a/drivers/nvme/target/fabrics-cmd-auth.c b/drivers/nvme/target/fabrics-cmd-auth.c
index e0dc22fea086d4..dd81cdeddaa98b 100644
--- a/drivers/nvme/target/fabrics-cmd-auth.c
+++ b/drivers/nvme/target/fabrics-cmd-auth.c
@@ -469,7 +469,7 @@ void nvmet_execute_auth_receive(struct nvmet_req *req)
 		return;
 	}
 
-	d = kmalloc(al, GFP_KERNEL);
+	d = kzalloc(al, GFP_KERNEL);
 	if (!d) {
 		status = NVME_SC_INTERNAL;
 		goto done;
diff --git a/drivers/nvme/target/fc.c b/drivers/nvme/target/fc.c
index 188b9f1bdaca14..c114f5db1d61a3 100644
--- a/drivers/nvme/target/fc.c
+++ b/drivers/nvme/target/fc.c
@@ -571,7 +571,7 @@ out_fail:
 		list_del(&iod->ls_rcv_list);
 	}
 
-	kfree(iod);
+	kfree(tgtport->iod);
 
 	return -EFAULT;
 }
diff --git a/drivers/nvme/target/tcp.c b/drivers/nvme/target/tcp.c
index b18eca51a5dd87..b0f5822b481f83 100644
--- a/drivers/nvme/target/tcp.c
+++ b/drivers/nvme/target/tcp.c
@@ -401,14 +401,15 @@ static int nvmet_tcp_map_data(struct nvmet_tcp_cmd *cmd)
 	}
 	cmd->req.transfer_len += len;
 
-	cmd->req.sg = sgl_alloc(len, GFP_KERNEL, &cmd->req.sg_cnt);
+	cmd->req.sg = sgl_alloc(len, GFP_KERNEL | __GFP_NOWARN,
+				&cmd->req.sg_cnt);
 	if (!cmd->req.sg)
 		return NVME_SC_INTERNAL;
 	cmd->cur_sg = cmd->req.sg;
 
 	if (nvmet_tcp_has_data_in(cmd)) {
 		cmd->iov = kmalloc_array(cmd->req.sg_cnt,
-				sizeof(*cmd->iov), GFP_KERNEL);
+				sizeof(*cmd->iov), GFP_KERNEL | __GFP_NOWARN);
 		if (!cmd->iov)
 			goto err;
 	}
diff --git a/drivers/pci/controller/pci-host-generic.c b/drivers/pci/controller/pci-host-generic.c
index 63865aeb636b88..70e9f4cab9be7c 100644
--- a/drivers/pci/controller/pci-host-generic.c
+++ b/drivers/pci/controller/pci-host-generic.c
@@ -14,15 +14,6 @@
 #include <linux/pci-ecam.h>
 #include <linux/platform_device.h>
 
-static const struct pci_ecam_ops gen_pci_cfg_cam_bus_ops = {
-	.bus_shift	= 16,
-	.pci_ops	= {
-		.map_bus	= pci_ecam_map_bus,
-		.read		= pci_generic_config_read,
-		.write		= pci_generic_config_write,
-	}
-};
-
 static bool pci_dw_valid_device(struct pci_bus *bus, unsigned int devfn)
 {
 	struct pci_config_window *cfg = bus->sysdata;
@@ -58,7 +49,7 @@ static const struct pci_ecam_ops pci_dw_ecam_bus_ops = {
 
 static const struct of_device_id gen_pci_of_match[] = {
 	{ .compatible = "pci-host-cam-generic",
-	  .data = &gen_pci_cfg_cam_bus_ops },
+	  .data = &pci_generic_cam_ops },
 
 	{ .compatible = "pci-host-ecam-generic",
 	  .data = &pci_generic_ecam_ops },
diff --git a/drivers/pci/ecam.c b/drivers/pci/ecam.c
index 1c40d2506aef34..97430664db3acc 100644
--- a/drivers/pci/ecam.c
+++ b/drivers/pci/ecam.c
@@ -208,6 +208,19 @@ const struct pci_ecam_ops pci_generic_ecam_ops = {
 };
 EXPORT_SYMBOL_GPL(pci_generic_ecam_ops);
 
+/* CAM ops */
+const struct pci_ecam_ops pci_generic_cam_ops = {
+	.bus_shift	= 16,
+	.pci_ops	= {
+		.add_bus	= pci_ecam_add_bus,
+		.remove_bus	= pci_ecam_remove_bus,
+		.map_bus	= pci_ecam_map_bus,
+		.read		= pci_generic_config_read,
+		.write		= pci_generic_config_write,
+	}
+};
+EXPORT_SYMBOL_GPL(pci_generic_cam_ops);
+
 #if defined(CONFIG_ACPI) && defined(CONFIG_PCI_QUIRKS)
 /* ECAM ops for 32-bit access only (non-compliant) */
 const struct pci_ecam_ops pci_32b_ops = {
diff --git a/drivers/s390/cio/vfio_ccw_chp.c b/drivers/s390/cio/vfio_ccw_chp.c
index 11264e2adffcb8..3ee2444f3d9022 100644
--- a/drivers/s390/cio/vfio_ccw_chp.c
+++ b/drivers/s390/cio/vfio_ccw_chp.c
@@ -92,17 +92,12 @@ static ssize_t vfio_ccw_crw_region_read(struct vfio_ccw_private *private,
 	loff_t pos = *ppos & VFIO_CCW_OFFSET_MASK;
 	struct ccw_crw_region *region;
 	struct vfio_ccw_crw *crw;
+	unsigned long flags;
 	int ret;
 
 	if (pos + count > sizeof(*region))
 		return -EINVAL;
 
-	crw = list_first_entry_or_null(&private->crw,
-				       struct vfio_ccw_crw, next);
-
-	if (crw)
-		list_del(&crw->next);
-
 	mutex_lock(&private->io_mutex);
 	if (i >= private->num_regions) {
 		ret = -EINVAL;
@@ -112,6 +107,16 @@ static ssize_t vfio_ccw_crw_region_read(struct vfio_ccw_private *private,
 	i = array_index_nospec(i, private->num_regions);
 	region = private->region[i].data;
 
+	spin_lock_irqsave(&private->crw_lock, flags);
+	crw = list_first_entry_or_null(&private->crw,
+				       struct vfio_ccw_crw, next);
+
+	if (crw)
+		list_del(&crw->next);
+
+	/* Drop CRW lock while copying to userspace */
+	spin_unlock_irqrestore(&private->crw_lock, flags);
+
 	if (crw)
 		memcpy(&region->crw, &crw->crw, sizeof(region->crw));
 
@@ -121,15 +126,16 @@ static ssize_t vfio_ccw_crw_region_read(struct vfio_ccw_private *private,
 		ret = count;
 
 	region->crw = 0;
-
-out:
-	mutex_unlock(&private->io_mutex);
-
 	kfree(crw);
 
 	/* Notify the guest if more CRWs are on our queue */
+	spin_lock_irqsave(&private->crw_lock, flags);
 	if (!list_empty(&private->crw) && private->crw_trigger)
 		eventfd_signal(private->crw_trigger, 1);
+	spin_unlock_irqrestore(&private->crw_lock, flags);
+
+out:
+	mutex_unlock(&private->io_mutex);
 
 	return ret;
 }
diff --git a/drivers/s390/cio/vfio_ccw_cp.c b/drivers/s390/cio/vfio_ccw_cp.c
index 8b0fbfd856235d..e64ac6e9b2911f 100644
--- a/drivers/s390/cio/vfio_ccw_cp.c
+++ b/drivers/s390/cio/vfio_ccw_cp.c
@@ -490,9 +490,6 @@ static int ccwchain_handle_ccw(u32 cda, struct channel_program *cp)
 	/* Loop for tics on this new chain. */
 	ret = ccwchain_loop_tic(chain, cp);
 
-	if (ret)
-		ccwchain_free(chain);
-
 	return ret;
 }
 
@@ -521,6 +518,23 @@ static int ccwchain_loop_tic(struct ccwchain *chain, struct channel_program *cp)
 	return 0;
 }
 
+static int ccwchain_build_ccws(u32 cda, struct channel_program *cp)
+{
+	struct ccwchain *chain, *temp;
+	int ret;
+
+	ret = ccwchain_handle_ccw(cda, cp);
+
+	if (ret) {
+		/* Cleanup if an error occurred */
+		list_for_each_entry_safe(chain, temp, &cp->ccwchain_list, next) {
+			ccwchain_free(chain);
+		}
+	}
+
+	return ret;
+}
+
 static int ccwchain_fetch_tic(struct ccwchain *chain,
 			      int idx,
 			      struct channel_program *cp)
@@ -699,7 +713,7 @@ int cp_init(struct channel_program *cp, union orb *orb)
 	memcpy(&cp->orb, orb, sizeof(*orb));
 
 	/* Build a ccwchain for the first CCW segment */
-	ret = ccwchain_handle_ccw(orb->cmd.cpa, cp);
+	ret = ccwchain_build_ccws(orb->cmd.cpa, cp);
 
 	if (!ret) {
 		cp->initialized = true;
@@ -904,17 +918,23 @@ void cp_update_scsw(struct channel_program *cp, union scsw *scsw)
  */
 bool cp_iova_pinned(struct channel_program *cp, u64 iova, u64 length)
 {
+	struct vfio_ccw_private *private =
+		container_of(cp, struct vfio_ccw_private, cp);
 	struct ccwchain *chain;
 	int i;
 
 	if (!cp->initialized)
 		return false;
 
+	mutex_lock(&private->io_mutex);
 	list_for_each_entry(chain, &cp->ccwchain_list, next) {
 		for (i = 0; i < chain->ch_len; i++)
-			if (page_array_iova_pinned(chain->ch_pa + i, iova, length))
+			if (page_array_iova_pinned(chain->ch_pa + i, iova, length)) {
+				mutex_unlock(&private->io_mutex);
 				return true;
+			}
 	}
+	mutex_unlock(&private->io_mutex);
 
 	return false;
 }
diff --git a/drivers/s390/cio/vfio_ccw_drv.c b/drivers/s390/cio/vfio_ccw_drv.c
index 7f5402fe857a2e..a8340a69a7c842 100644
--- a/drivers/s390/cio/vfio_ccw_drv.c
+++ b/drivers/s390/cio/vfio_ccw_drv.c
@@ -82,6 +82,7 @@ static void vfio_ccw_sch_io_todo(struct work_struct *work)
 
 	is_final = !(scsw_actl(&irb->scsw) &
 		     (SCSW_ACTL_DEVACT | SCSW_ACTL_SCHACT));
+	mutex_lock(&private->io_mutex);
 	if (scsw_is_solicited(&irb->scsw)) {
 		cp_update_scsw(&private->cp, &irb->scsw);
 		if (is_final && private->state == VFIO_CCW_STATE_CP_PENDING) {
@@ -89,9 +90,7 @@ static void vfio_ccw_sch_io_todo(struct work_struct *work)
 			cp_is_finished = true;
 		}
 	}
-	mutex_lock(&private->io_mutex);
 	memcpy(private->io_region->irb_area, irb, sizeof(*irb));
-	mutex_unlock(&private->io_mutex);
 
 	/*
 	 * Reset to IDLE only if processing of a channel program
@@ -101,6 +100,7 @@ static void vfio_ccw_sch_io_todo(struct work_struct *work)
 	 */
 	if (cp_is_finished)
 		private->state = VFIO_CCW_STATE_IDLE;
+	mutex_unlock(&private->io_mutex);
 
 	if (private->io_trigger)
 		eventfd_signal(private->io_trigger, 1);
@@ -109,11 +109,25 @@ static void vfio_ccw_sch_io_todo(struct work_struct *work)
 static void vfio_ccw_crw_todo(struct work_struct *work)
 {
 	struct vfio_ccw_private *private;
+	unsigned long flags;
 
 	private = container_of(work, struct vfio_ccw_private, crw_work);
 
+	spin_lock_irqsave(&private->crw_lock, flags);
 	if (!list_empty(&private->crw) && private->crw_trigger)
 		eventfd_signal(private->crw_trigger, 1);
+	spin_unlock_irqrestore(&private->crw_lock, flags);
+}
+
+static void vfio_ccw_notoper_todo(struct work_struct *work)
+{
+	struct vfio_ccw_private *private;
+
+	private = container_of(work, struct vfio_ccw_private, notoper_work);
+
+	mutex_lock(&private->io_mutex);
+	cp_free(&private->cp);
+	mutex_unlock(&private->io_mutex);
 }
 
 /*
@@ -141,6 +155,8 @@ static struct vfio_ccw_private *vfio_ccw_alloc_private(struct subchannel *sch)
 	INIT_LIST_HEAD(&private->crw);
 	INIT_WORK(&private->io_work, vfio_ccw_sch_io_todo);
 	INIT_WORK(&private->crw_work, vfio_ccw_crw_todo);
+	INIT_WORK(&private->notoper_work, vfio_ccw_notoper_todo);
+	spin_lock_init(&private->crw_lock);
 
 	private->cp.guest_cp = kcalloc(CCWCHAIN_LEN_MAX, sizeof(struct ccw1),
 				       GFP_KERNEL);
@@ -187,11 +203,14 @@ out_free_private:
 static void vfio_ccw_free_private(struct vfio_ccw_private *private)
 {
 	struct vfio_ccw_crw *crw, *temp;
+	unsigned long flags;
 
+	spin_lock_irqsave(&private->crw_lock, flags);
 	list_for_each_entry_safe(crw, temp, &private->crw, next) {
 		list_del(&crw->next);
 		kfree(crw);
 	}
+	spin_unlock_irqrestore(&private->crw_lock, flags);
 
 	kmem_cache_free(vfio_ccw_crw_region, private->crw_region);
 	kmem_cache_free(vfio_ccw_schib_region, private->schib_region);
@@ -302,6 +321,7 @@ static void vfio_ccw_queue_crw(struct vfio_ccw_private *private,
 			       unsigned int rsid)
 {
 	struct vfio_ccw_crw *crw;
+	unsigned long flags;
 
 	/*
 	 * If unable to allocate a CRW, just drop the event and
@@ -319,7 +339,9 @@ static void vfio_ccw_queue_crw(struct vfio_ccw_private *private,
 	crw->crw.erc = erc;
 	crw->crw.rsid = rsid;
 
+	spin_lock_irqsave(&private->crw_lock, flags);
 	list_add_tail(&crw->next, &private->crw);
+	spin_unlock_irqrestore(&private->crw_lock, flags);
 	queue_work(vfio_ccw_work_q, &private->crw_work);
 }
 
diff --git a/drivers/s390/cio/vfio_ccw_fsm.c b/drivers/s390/cio/vfio_ccw_fsm.c
index a59c758869f8f8..aefc4ebf404741 100644
--- a/drivers/s390/cio/vfio_ccw_fsm.c
+++ b/drivers/s390/cio/vfio_ccw_fsm.c
@@ -176,8 +176,8 @@ static void fsm_notoper(struct vfio_ccw_private *private,
 	css_sched_sch_todo(sch, SCH_TODO_UNREG);
 	private->state = VFIO_CCW_STATE_NOT_OPER;
 
-	/* This is usually handled during CLOSE event */
-	cp_free(&private->cp);
+	/* This routine could be called from IRQ context, so defer */
+	queue_work(vfio_ccw_work_q, &private->notoper_work);
 }
 
 /*
@@ -413,7 +413,11 @@ static void fsm_close(struct vfio_ccw_private *private,
 
 	private->state = VFIO_CCW_STATE_STANDBY;
 	spin_unlock_irq(sch->lock);
+
+	mutex_lock(&private->io_mutex);
 	cp_free(&private->cp);
+	mutex_unlock(&private->io_mutex);
+
 	return;
 
 err_unlock:
diff --git a/drivers/s390/cio/vfio_ccw_ops.c b/drivers/s390/cio/vfio_ccw_ops.c
index 5af74d31424929..46615f5e2f4821 100644
--- a/drivers/s390/cio/vfio_ccw_ops.c
+++ b/drivers/s390/cio/vfio_ccw_ops.c
@@ -86,6 +86,20 @@ static void vfio_ccw_mdev_release_dev(struct vfio_device *vdev)
 	struct vfio_ccw_private *private =
 		container_of(vdev, struct vfio_ccw_private, vdev);
 
+	/*
+	 * Ensure these work items are fully drained, so none can
+	 * fire after being released.
+	 *
+	 * notoper_work should have nothing to do here, because only
+	 * open devices could have channel_program resources in use
+	 * and those would be released during close. Nevertheless,
+	 * call flush here as well to be certain anything that was
+	 * allocated is freed.
+	 */
+	cancel_work_sync(&private->io_work);
+	cancel_work_sync(&private->crw_work);
+	flush_work(&private->notoper_work);
+
 	/*
 	 * We cannot free vfio_ccw_private here because it includes
 	 * parent info which must be free'ed by css driver.
@@ -162,6 +176,19 @@ static void vfio_ccw_mdev_close_device(struct vfio_device *vdev)
 		container_of(vdev, struct vfio_ccw_private, vdev);
 
 	vfio_ccw_fsm_event(private, VFIO_CCW_EVENT_CLOSE);
+
+	/*
+	 * Ensure these work items are drained, in the event the
+	 * device is re-opened instead of released.
+	 *
+	 * notoper_work needs to be given a chance to run if it
+	 * is queued, so any memory associated with the channel
+	 * program can be returned.
+	 */
+	cancel_work_sync(&private->io_work);
+	cancel_work_sync(&private->crw_work);
+	flush_work(&private->notoper_work);
+
 	vfio_ccw_unregister_dev_regions(private);
 }
 
diff --git a/drivers/s390/cio/vfio_ccw_private.h b/drivers/s390/cio/vfio_ccw_private.h
index bd5fb81456af85..5294910e64cc2f 100644
--- a/drivers/s390/cio/vfio_ccw_private.h
+++ b/drivers/s390/cio/vfio_ccw_private.h
@@ -74,7 +74,8 @@ struct vfio_ccw_crw {
  * @state: internal state of the device
  * @completion: synchronization helper of the I/O completion
  * @io_region: MMIO region to input/output I/O arguments/results
- * @io_mutex: protect against concurrent update of I/O regions
+ * @io_mutex: protect against concurrent update of I/O resources
+ *            and @cp lifecycle
  * @region: additional regions for other subchannel operations
  * @cmd_region: MMIO region for asynchronous I/O commands other than START
  * @schib_region: MMIO region for SCHIB information
@@ -83,11 +84,14 @@ struct vfio_ccw_crw {
  * @cp: channel program for the current I/O operation
  * @irb: irb info received from interrupt
  * @scsw: scsw info
+ * @crw_lock: serialization of CRW list information
+ * @crw: list of Channel Report Word elements
  * @io_trigger: eventfd ctx for signaling userspace I/O results
  * @crw_trigger: eventfd ctx for signaling userspace CRW information
  * @req_trigger: eventfd ctx for signaling userspace to return device
  * @io_work: work for deferral process of I/O handling
  * @crw_work: work for deferral process of CRW handling
+ * @notoper_work: work for deferred processing in not-operational state
  * @release_comp: synchronization helper for vfio device release
  * @parent: parent data structures for mdevs created
  */
@@ -107,6 +111,8 @@ struct vfio_ccw_private {
 	struct channel_program	cp;
 	struct irb		irb;
 	union scsw		scsw;
+
+	spinlock_t		crw_lock;
 	struct list_head	crw;
 
 	struct eventfd_ctx	*io_trigger;
@@ -114,6 +120,7 @@ struct vfio_ccw_private {
 	struct eventfd_ctx	*req_trigger;
 	struct work_struct	io_work;
 	struct work_struct	crw_work;
+	struct work_struct	notoper_work;
 
 	struct completion	release_comp;
 
diff --git a/drivers/tty/serial/amba-pl011.c b/drivers/tty/serial/amba-pl011.c
index bb7f82f8278d04..c0299c7ef1c187 100644
--- a/drivers/tty/serial/amba-pl011.c
+++ b/drivers/tty/serial/amba-pl011.c
@@ -1193,7 +1193,7 @@ static void pl011_dma_shutdown(struct uart_amba_port *uap)
 
 	if (uap->using_tx_dma) {
 		/* In theory, this should already be done by pl011_dma_flush_buffer */
-		dmaengine_terminate_all(uap->dmatx.chan);
+		dmaengine_terminate_sync(uap->dmatx.chan);
 		if (uap->dmatx.queued) {
 			dma_unmap_single(uap->dmatx.chan->device->dev,
 					 uap->dmatx.dma, uap->dmatx.len,
@@ -1206,12 +1206,12 @@ static void pl011_dma_shutdown(struct uart_amba_port *uap)
 	}
 
 	if (uap->using_rx_dma) {
-		dmaengine_terminate_all(uap->dmarx.chan);
+		if (uap->dmarx.poll_rate)
+			timer_delete_sync(&uap->dmarx.timer);
+		dmaengine_terminate_sync(uap->dmarx.chan);
 		/* Clean up the RX DMA */
 		pl011_dmabuf_free(uap->dmarx.chan, &uap->dmarx.dbuf_a, DMA_FROM_DEVICE);
 		pl011_dmabuf_free(uap->dmarx.chan, &uap->dmarx.dbuf_b, DMA_FROM_DEVICE);
-		if (uap->dmarx.poll_rate)
-			del_timer_sync(&uap->dmarx.timer);
 		uap->using_rx_dma = false;
 	}
 }
diff --git a/drivers/tty/serial/sc16is7xx.c b/drivers/tty/serial/sc16is7xx.c
index 34abce41f92d22..f0ba5a930b2c38 100644
--- a/drivers/tty/serial/sc16is7xx.c
+++ b/drivers/tty/serial/sc16is7xx.c
@@ -9,6 +9,8 @@
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 
 #include <linux/bitops.h>
+#include <linux/bits.h>
+#include <linux/cleanup.h>
 #include <linux/clk.h>
 #include <linux/delay.h>
 #include <linux/device.h>
@@ -73,52 +75,52 @@
 #define SC16IS7XX_XOFF2_REG		(0x07) /* Xoff2 word */
 
 /* IER register bits */
-#define SC16IS7XX_IER_RDI_BIT		(1 << 0) /* Enable RX data interrupt */
-#define SC16IS7XX_IER_THRI_BIT		(1 << 1) /* Enable TX holding register
+#define SC16IS7XX_IER_RDI_BIT		BIT(0)   /* Enable RX data interrupt */
+#define SC16IS7XX_IER_THRI_BIT		BIT(1)   /* Enable TX holding register
 						  * interrupt */
-#define SC16IS7XX_IER_RLSI_BIT		(1 << 2) /* Enable RX line status
+#define SC16IS7XX_IER_RLSI_BIT		BIT(2)   /* Enable RX line status
 						  * interrupt */
-#define SC16IS7XX_IER_MSI_BIT		(1 << 3) /* Enable Modem status
+#define SC16IS7XX_IER_MSI_BIT		BIT(3)   /* Enable Modem status
 						  * interrupt */
 
 /* IER register bits - write only if (EFR[4] == 1) */
-#define SC16IS7XX_IER_SLEEP_BIT		(1 << 4) /* Enable Sleep mode */
-#define SC16IS7XX_IER_XOFFI_BIT		(1 << 5) /* Enable Xoff interrupt */
-#define SC16IS7XX_IER_RTSI_BIT		(1 << 6) /* Enable nRTS interrupt */
-#define SC16IS7XX_IER_CTSI_BIT		(1 << 7) /* Enable nCTS interrupt */
+#define SC16IS7XX_IER_SLEEP_BIT		BIT(4)   /* Enable Sleep mode */
+#define SC16IS7XX_IER_XOFFI_BIT		BIT(5)   /* Enable Xoff interrupt */
+#define SC16IS7XX_IER_RTSI_BIT		BIT(6)   /* Enable nRTS interrupt */
+#define SC16IS7XX_IER_CTSI_BIT		BIT(7)   /* Enable nCTS interrupt */
 
 /* FCR register bits */
-#define SC16IS7XX_FCR_FIFO_BIT		(1 << 0) /* Enable FIFO */
-#define SC16IS7XX_FCR_RXRESET_BIT	(1 << 1) /* Reset RX FIFO */
-#define SC16IS7XX_FCR_TXRESET_BIT	(1 << 2) /* Reset TX FIFO */
-#define SC16IS7XX_FCR_RXLVLL_BIT	(1 << 6) /* RX Trigger level LSB */
-#define SC16IS7XX_FCR_RXLVLH_BIT	(1 << 7) /* RX Trigger level MSB */
+#define SC16IS7XX_FCR_FIFO_BIT		BIT(0)   /* Enable FIFO */
+#define SC16IS7XX_FCR_RXRESET_BIT	BIT(1)   /* Reset RX FIFO */
+#define SC16IS7XX_FCR_TXRESET_BIT	BIT(2)   /* Reset TX FIFO */
+#define SC16IS7XX_FCR_RXLVLL_BIT	BIT(6)   /* RX Trigger level LSB */
+#define SC16IS7XX_FCR_RXLVLH_BIT	BIT(7)   /* RX Trigger level MSB */
 
 /* FCR register bits - write only if (EFR[4] == 1) */
-#define SC16IS7XX_FCR_TXLVLL_BIT	(1 << 4) /* TX Trigger level LSB */
-#define SC16IS7XX_FCR_TXLVLH_BIT	(1 << 5) /* TX Trigger level MSB */
+#define SC16IS7XX_FCR_TXLVLL_BIT	BIT(4)   /* TX Trigger level LSB */
+#define SC16IS7XX_FCR_TXLVLH_BIT	BIT(5)   /* TX Trigger level MSB */
 
 /* IIR register bits */
-#define SC16IS7XX_IIR_NO_INT_BIT	(1 << 0) /* No interrupts pending */
-#define SC16IS7XX_IIR_ID_MASK		0x3e     /* Mask for the interrupt ID */
-#define SC16IS7XX_IIR_THRI_SRC		0x02     /* TX holding register empty */
-#define SC16IS7XX_IIR_RDI_SRC		0x04     /* RX data interrupt */
-#define SC16IS7XX_IIR_RLSE_SRC		0x06     /* RX line status error */
-#define SC16IS7XX_IIR_RTOI_SRC		0x0c     /* RX time-out interrupt */
-#define SC16IS7XX_IIR_MSI_SRC		0x00     /* Modem status interrupt
-						  * - only on 75x/76x
-						  */
-#define SC16IS7XX_IIR_INPIN_SRC		0x30     /* Input pin change of state
-						  * - only on 75x/76x
-						  */
-#define SC16IS7XX_IIR_XOFFI_SRC		0x10     /* Received Xoff */
-#define SC16IS7XX_IIR_CTSRTS_SRC	0x20     /* nCTS,nRTS change of state
-						  * from active (LOW)
-						  * to inactive (HIGH)
-						  */
+#define SC16IS7XX_IIR_NO_INT_BIT	0x01		/* No interrupts pending */
+#define SC16IS7XX_IIR_ID_MASK		GENMASK(5, 1)	/* Mask for the interrupt ID */
+#define SC16IS7XX_IIR_THRI_SRC		0x02		/* TX holding register empty */
+#define SC16IS7XX_IIR_RDI_SRC		0x04		/* RX data interrupt */
+#define SC16IS7XX_IIR_RLSE_SRC		0x06		/* RX line status error */
+#define SC16IS7XX_IIR_RTOI_SRC		0x0c		/* RX time-out interrupt */
+#define SC16IS7XX_IIR_MSI_SRC		0x00		/* Modem status interrupt
+							 * - only on 75x/76x
+							 */
+#define SC16IS7XX_IIR_INPIN_SRC		0x30		/* Input pin change of state
+							 * - only on 75x/76x
+							 */
+#define SC16IS7XX_IIR_XOFFI_SRC		0x10		/* Received Xoff */
+#define SC16IS7XX_IIR_CTSRTS_SRC	0x20		/* nCTS,nRTS change of state
+							 * from active (LOW)
+							 * to inactive (HIGH)
+							 */
 /* LCR register bits */
-#define SC16IS7XX_LCR_LENGTH0_BIT	(1 << 0) /* Word length bit 0 */
-#define SC16IS7XX_LCR_LENGTH1_BIT	(1 << 1) /* Word length bit 1
+#define SC16IS7XX_LCR_LENGTH0_BIT	BIT(0)   /* Word length bit 0 */
+#define SC16IS7XX_LCR_LENGTH1_BIT	BIT(1)   /* Word length bit 1
 						  *
 						  * Word length bits table:
 						  * 00 -> 5 bit words
@@ -126,7 +128,7 @@
 						  * 10 -> 7 bit words
 						  * 11 -> 8 bit words
 						  */
-#define SC16IS7XX_LCR_STOPLEN_BIT	(1 << 2) /* STOP length bit
+#define SC16IS7XX_LCR_STOPLEN_BIT	BIT(2)   /* STOP length bit
 						  *
 						  * STOP length bit table:
 						  * 0 -> 1 stop bit
@@ -134,11 +136,11 @@
 						  *      word length is 5,
 						  *      2 stop bits otherwise
 						  */
-#define SC16IS7XX_LCR_PARITY_BIT	(1 << 3) /* Parity bit enable */
-#define SC16IS7XX_LCR_EVENPARITY_BIT	(1 << 4) /* Even parity bit enable */
-#define SC16IS7XX_LCR_FORCEPARITY_BIT	(1 << 5) /* 9-bit multidrop parity */
-#define SC16IS7XX_LCR_TXBREAK_BIT	(1 << 6) /* TX break enable */
-#define SC16IS7XX_LCR_DLAB_BIT		(1 << 7) /* Divisor Latch enable */
+#define SC16IS7XX_LCR_PARITY_BIT	BIT(3)   /* Parity bit enable */
+#define SC16IS7XX_LCR_EVENPARITY_BIT	BIT(4)   /* Even parity bit enable */
+#define SC16IS7XX_LCR_FORCEPARITY_BIT	BIT(5)   /* 9-bit multidrop parity */
+#define SC16IS7XX_LCR_TXBREAK_BIT	BIT(6)   /* TX break enable */
+#define SC16IS7XX_LCR_DLAB_BIT		BIT(7)   /* Divisor Latch enable */
 #define SC16IS7XX_LCR_WORD_LEN_5	(0x00)
 #define SC16IS7XX_LCR_WORD_LEN_6	(0x01)
 #define SC16IS7XX_LCR_WORD_LEN_7	(0x02)
@@ -149,58 +151,63 @@
 								* reg set */
 
 /* MCR register bits */
-#define SC16IS7XX_MCR_DTR_BIT		(1 << 0) /* DTR complement
+#define SC16IS7XX_MCR_DTR_BIT		BIT(0)   /* DTR complement
 						  * - only on 75x/76x
 						  */
-#define SC16IS7XX_MCR_RTS_BIT		(1 << 1) /* RTS complement */
-#define SC16IS7XX_MCR_TCRTLR_BIT	(1 << 2) /* TCR/TLR register enable */
-#define SC16IS7XX_MCR_LOOP_BIT		(1 << 4) /* Enable loopback test mode */
-#define SC16IS7XX_MCR_XONANY_BIT	(1 << 5) /* Enable Xon Any
+#define SC16IS7XX_MCR_RTS_BIT		BIT(1)   /* RTS complement */
+#define SC16IS7XX_MCR_TCRTLR_BIT	BIT(2)   /* TCR/TLR register enable */
+#define SC16IS7XX_MCR_LOOP_BIT		BIT(4)   /* Enable loopback test mode */
+#define SC16IS7XX_MCR_XONANY_BIT	BIT(5)   /* Enable Xon Any
 						  * - write enabled
 						  * if (EFR[4] == 1)
 						  */
-#define SC16IS7XX_MCR_IRDA_BIT		(1 << 6) /* Enable IrDA mode
+#define SC16IS7XX_MCR_IRDA_BIT		BIT(6)   /* Enable IrDA mode
 						  * - write enabled
 						  * if (EFR[4] == 1)
 						  */
-#define SC16IS7XX_MCR_CLKSEL_BIT	(1 << 7) /* Divide clock by 4
+#define SC16IS7XX_MCR_CLKSEL_BIT	BIT(7)   /* Divide clock by 4
 						  * - write enabled
 						  * if (EFR[4] == 1)
 						  */
 
 /* LSR register bits */
-#define SC16IS7XX_LSR_DR_BIT		(1 << 0) /* Receiver data ready */
-#define SC16IS7XX_LSR_OE_BIT		(1 << 1) /* Overrun Error */
-#define SC16IS7XX_LSR_PE_BIT		(1 << 2) /* Parity Error */
-#define SC16IS7XX_LSR_FE_BIT		(1 << 3) /* Frame Error */
-#define SC16IS7XX_LSR_BI_BIT		(1 << 4) /* Break Interrupt */
-#define SC16IS7XX_LSR_BRK_ERROR_MASK	0x1E     /* BI, FE, PE, OE bits */
-#define SC16IS7XX_LSR_THRE_BIT		(1 << 5) /* TX holding register empty */
-#define SC16IS7XX_LSR_TEMT_BIT		(1 << 6) /* Transmitter empty */
-#define SC16IS7XX_LSR_FIFOE_BIT		(1 << 7) /* Fifo Error */
+#define SC16IS7XX_LSR_DR_BIT		BIT(0)   /* Receiver data ready */
+#define SC16IS7XX_LSR_OE_BIT		BIT(1)   /* Overrun Error */
+#define SC16IS7XX_LSR_PE_BIT		BIT(2)   /* Parity Error */
+#define SC16IS7XX_LSR_FE_BIT		BIT(3)   /* Frame Error */
+#define SC16IS7XX_LSR_BI_BIT		BIT(4)   /* Break Interrupt */
+#define SC16IS7XX_LSR_BRK_ERROR_MASK \
+	(SC16IS7XX_LSR_OE_BIT | \
+	 SC16IS7XX_LSR_PE_BIT | \
+	 SC16IS7XX_LSR_FE_BIT | \
+	 SC16IS7XX_LSR_BI_BIT)
+
+#define SC16IS7XX_LSR_THRE_BIT		BIT(5)   /* TX holding register empty */
+#define SC16IS7XX_LSR_TEMT_BIT		BIT(6)   /* Transmitter empty */
+#define SC16IS7XX_LSR_FIFOE_BIT		BIT(7)   /* Fifo Error */
 
 /* MSR register bits */
-#define SC16IS7XX_MSR_DCTS_BIT		(1 << 0) /* Delta CTS Clear To Send */
-#define SC16IS7XX_MSR_DDSR_BIT		(1 << 1) /* Delta DSR Data Set Ready
+#define SC16IS7XX_MSR_DCTS_BIT		BIT(0)   /* Delta CTS Clear To Send */
+#define SC16IS7XX_MSR_DDSR_BIT		BIT(1)   /* Delta DSR Data Set Ready
 						  * or (IO4)
 						  * - only on 75x/76x
 						  */
-#define SC16IS7XX_MSR_DRI_BIT		(1 << 2) /* Delta RI Ring Indicator
+#define SC16IS7XX_MSR_DRI_BIT		BIT(2)   /* Delta RI Ring Indicator
 						  * or (IO7)
 						  * - only on 75x/76x
 						  */
-#define SC16IS7XX_MSR_DCD_BIT		(1 << 3) /* Delta CD Carrier Detect
+#define SC16IS7XX_MSR_DCD_BIT		BIT(3)   /* Delta CD Carrier Detect
 						  * or (IO6)
 						  * - only on 75x/76x
 						  */
-#define SC16IS7XX_MSR_CTS_BIT		(1 << 4) /* CTS */
-#define SC16IS7XX_MSR_DSR_BIT		(1 << 5) /* DSR (IO4)
+#define SC16IS7XX_MSR_CTS_BIT		BIT(4)   /* CTS */
+#define SC16IS7XX_MSR_DSR_BIT		BIT(5)   /* DSR (IO4)
 						  * - only on 75x/76x
 						  */
-#define SC16IS7XX_MSR_RI_BIT		(1 << 6) /* RI (IO7)
+#define SC16IS7XX_MSR_RI_BIT		BIT(6)   /* RI (IO7)
 						  * - only on 75x/76x
 						  */
-#define SC16IS7XX_MSR_CD_BIT		(1 << 7) /* CD (IO6)
+#define SC16IS7XX_MSR_CD_BIT		BIT(7)   /* CD (IO6)
 						  * - only on 75x/76x
 						  */
 #define SC16IS7XX_MSR_DELTA_MASK	0x0F     /* Any of the delta bits! */
@@ -236,19 +243,19 @@
 #define SC16IS7XX_TLR_RX_TRIGGER(words)	((((words) / 4) & 0x0f) << 4)
 
 /* IOControl register bits (Only 750/760) */
-#define SC16IS7XX_IOCONTROL_LATCH_BIT	(1 << 0) /* Enable input latching */
-#define SC16IS7XX_IOCONTROL_MODEM_A_BIT	(1 << 1) /* Enable GPIO[7:4] as modem A pins */
-#define SC16IS7XX_IOCONTROL_MODEM_B_BIT	(1 << 2) /* Enable GPIO[3:0] as modem B pins */
-#define SC16IS7XX_IOCONTROL_SRESET_BIT	(1 << 3) /* Software Reset */
+#define SC16IS7XX_IOCONTROL_LATCH_BIT	BIT(0)   /* Enable input latching */
+#define SC16IS7XX_IOCONTROL_MODEM_A_BIT	BIT(1)   /* Enable GPIO[7:4] as modem A pins */
+#define SC16IS7XX_IOCONTROL_MODEM_B_BIT	BIT(2)   /* Enable GPIO[3:0] as modem B pins */
+#define SC16IS7XX_IOCONTROL_SRESET_BIT	BIT(3)   /* Software Reset */
 
 /* EFCR register bits */
-#define SC16IS7XX_EFCR_9BIT_MODE_BIT	(1 << 0) /* Enable 9-bit or Multidrop
+#define SC16IS7XX_EFCR_9BIT_MODE_BIT	BIT(0)   /* Enable 9-bit or Multidrop
 						  * mode (RS485) */
-#define SC16IS7XX_EFCR_RXDISABLE_BIT	(1 << 1) /* Disable receiver */
-#define SC16IS7XX_EFCR_TXDISABLE_BIT	(1 << 2) /* Disable transmitter */
-#define SC16IS7XX_EFCR_AUTO_RS485_BIT	(1 << 4) /* Auto RS485 RTS direction */
-#define SC16IS7XX_EFCR_RTS_INVERT_BIT	(1 << 5) /* RTS output inversion */
-#define SC16IS7XX_EFCR_IRDA_MODE_BIT	(1 << 7) /* IrDA mode
+#define SC16IS7XX_EFCR_RXDISABLE_BIT	BIT(1)   /* Disable receiver */
+#define SC16IS7XX_EFCR_TXDISABLE_BIT	BIT(2)   /* Disable transmitter */
+#define SC16IS7XX_EFCR_AUTO_RS485_BIT	BIT(4)   /* Auto RS485 RTS direction */
+#define SC16IS7XX_EFCR_RTS_INVERT_BIT	BIT(5)   /* RTS output inversion */
+#define SC16IS7XX_EFCR_IRDA_MODE_BIT	BIT(7)   /* IrDA mode
 						  * 0 = rate upto 115.2 kbit/s
 						  *   - Only 750/760
 						  * 1 = rate upto 1.152 Mbit/s
@@ -256,16 +263,16 @@
 						  */
 
 /* EFR register bits */
-#define SC16IS7XX_EFR_AUTORTS_BIT	(1 << 6) /* Auto RTS flow ctrl enable */
-#define SC16IS7XX_EFR_AUTOCTS_BIT	(1 << 7) /* Auto CTS flow ctrl enable */
-#define SC16IS7XX_EFR_XOFF2_DETECT_BIT	(1 << 5) /* Enable Xoff2 detection */
-#define SC16IS7XX_EFR_ENABLE_BIT	(1 << 4) /* Enable enhanced functions
+#define SC16IS7XX_EFR_AUTORTS_BIT	BIT(6)   /* Auto RTS flow ctrl enable */
+#define SC16IS7XX_EFR_AUTOCTS_BIT	BIT(7)   /* Auto CTS flow ctrl enable */
+#define SC16IS7XX_EFR_XOFF2_DETECT_BIT	BIT(5)   /* Enable Xoff2 detection */
+#define SC16IS7XX_EFR_ENABLE_BIT	BIT(4)   /* Enable enhanced functions
 						  * and writing to IER[7:4],
 						  * FCR[5:4], MCR[7:5]
 						  */
-#define SC16IS7XX_EFR_SWFLOW3_BIT	(1 << 3) /* SWFLOW bit 3 */
-#define SC16IS7XX_EFR_SWFLOW2_BIT	(1 << 2) /* SWFLOW bit 2
-						  *
+#define SC16IS7XX_EFR_SWFLOW3_BIT	BIT(3)
+#define SC16IS7XX_EFR_SWFLOW2_BIT	BIT(2)
+						 /*
 						  * SWFLOW bits 3 & 2 table:
 						  * 00 -> no transmitter flow
 						  *       control
@@ -277,10 +284,10 @@
 						  *       XON1, XON2, XOFF1 and
 						  *       XOFF2
 						  */
-#define SC16IS7XX_EFR_SWFLOW1_BIT	(1 << 1) /* SWFLOW bit 2 */
-#define SC16IS7XX_EFR_SWFLOW0_BIT	(1 << 0) /* SWFLOW bit 3
-						  *
-						  * SWFLOW bits 3 & 2 table:
+#define SC16IS7XX_EFR_SWFLOW1_BIT	BIT(1)
+#define SC16IS7XX_EFR_SWFLOW0_BIT	BIT(0)
+						 /*
+						  * SWFLOW bits 1 & 0 table:
 						  * 00 -> no received flow
 						  *       control
 						  * 01 -> receiver compares
@@ -311,9 +318,9 @@ struct sc16is7xx_devtype {
 	int	nr_uart;
 };
 
-#define SC16IS7XX_RECONF_MD		(1 << 0)
-#define SC16IS7XX_RECONF_IER		(1 << 1)
-#define SC16IS7XX_RECONF_RS485		(1 << 2)
+#define SC16IS7XX_RECONF_MD		BIT(0)
+#define SC16IS7XX_RECONF_IER		BIT(1)
+#define SC16IS7XX_RECONF_RS485		BIT(2)
 
 struct sc16is7xx_one_config {
 	unsigned int			flags;
@@ -324,7 +331,7 @@ struct sc16is7xx_one_config {
 struct sc16is7xx_one {
 	struct uart_port		port;
 	struct regmap			*regmap;
-	struct mutex			efr_lock; /* EFR registers access */
+	struct mutex			lock; /* For registers sharing same address space. */
 	struct kthread_work		tx_work;
 	struct kthread_work		reg_work;
 	struct kthread_delayed_work	ms_work;
@@ -431,7 +438,7 @@ static void sc16is7xx_efr_lock(struct uart_port *port)
 {
 	struct sc16is7xx_one *one = to_sc16is7xx_one(port, port);
 
-	mutex_lock(&one->efr_lock);
+	mutex_lock(&one->lock);
 
 	/* Backup content of LCR. */
 	one->old_lcr = sc16is7xx_port_read(port, SC16IS7XX_LCR_REG);
@@ -453,7 +460,7 @@ static void sc16is7xx_efr_unlock(struct uart_port *port)
 	/* Restore original content of LCR */
 	sc16is7xx_port_write(port, SC16IS7XX_LCR_REG, one->old_lcr);
 
-	mutex_unlock(&one->efr_lock);
+	mutex_unlock(&one->lock);
 }
 
 static void sc16is7xx_ier_clear(struct uart_port *port, u8 bit)
@@ -588,7 +595,7 @@ static int sc16is7xx_set_baud(struct uart_port *port, int baud)
 			      prescaler == 1 ? 0 : SC16IS7XX_MCR_CLKSEL_BIT);
 
 
-	mutex_lock(&one->efr_lock);
+	mutex_lock(&one->lock);
 
 	/* Backup LCR and access special register set (DLL/DLH) */
 	lcr = sc16is7xx_port_read(port, SC16IS7XX_LCR_REG);
@@ -604,7 +611,7 @@ static int sc16is7xx_set_baud(struct uart_port *port, int baud)
 	/* Restore LCR and access to general register set */
 	sc16is7xx_port_write(port, SC16IS7XX_LCR_REG, lcr);
 
-	mutex_unlock(&one->efr_lock);
+	mutex_unlock(&one->lock);
 
 	return DIV_ROUND_CLOSEST((clk / prescaler) / 16, div);
 }
@@ -762,7 +769,7 @@ static void sc16is7xx_update_mlines(struct sc16is7xx_one *one)
 	unsigned long flags;
 	unsigned int status, changed;
 
-	lockdep_assert_held_once(&one->efr_lock);
+	lockdep_assert_held_once(&one->lock);
 
 	status = sc16is7xx_get_hwmctrl(port);
 	changed = status ^ one->old_mctrl;
@@ -788,18 +795,15 @@ static void sc16is7xx_update_mlines(struct sc16is7xx_one *one)
 
 static bool sc16is7xx_port_irq(struct sc16is7xx_port *s, int portno)
 {
-	bool rc = true;
 	unsigned int iir, rxlen;
 	struct uart_port *port = &s->p[portno].port;
 	struct sc16is7xx_one *one = to_sc16is7xx_one(port, port);
 
-	mutex_lock(&one->efr_lock);
+	guard(mutex)(&one->lock);
 
 	iir = sc16is7xx_port_read(port, SC16IS7XX_IIR_REG);
-	if (iir & SC16IS7XX_IIR_NO_INT_BIT) {
-		rc = false;
-		goto out_port_irq;
-	}
+	if (iir & SC16IS7XX_IIR_NO_INT_BIT)
+		return false;
 
 	iir &= SC16IS7XX_IIR_ID_MASK;
 
@@ -839,10 +843,7 @@ static bool sc16is7xx_port_irq(struct sc16is7xx_port *s, int portno)
 		break;
 	}
 
-out_port_irq:
-	mutex_unlock(&one->efr_lock);
-
-	return rc;
+	return true;
 }
 
 static irqreturn_t sc16is7xx_irq(int irq, void *dev_id)
@@ -872,9 +873,11 @@ static void sc16is7xx_tx_proc(struct kthread_work *ws)
 	    (port->rs485.delay_rts_before_send > 0))
 		msleep(port->rs485.delay_rts_before_send);
 
-	mutex_lock(&one->efr_lock);
+	guard(mutex)(&one->lock);
+	sc16is7xx_port_update(port, SC16IS7XX_IER_REG,
+			      SC16IS7XX_IER_THRI_BIT,
+			      SC16IS7XX_IER_THRI_BIT);
 	sc16is7xx_handle_tx(port);
-	mutex_unlock(&one->efr_lock);
 }
 
 static void sc16is7xx_reconf_rs485(struct uart_port *port)
@@ -941,9 +944,8 @@ static void sc16is7xx_ms_proc(struct kthread_work *ws)
 	struct sc16is7xx_port *s = dev_get_drvdata(one->port.dev);
 
 	if (one->port.state) {
-		mutex_lock(&one->efr_lock);
-		sc16is7xx_update_mlines(one);
-		mutex_unlock(&one->efr_lock);
+		scoped_guard(mutex, &one->lock)
+			sc16is7xx_update_mlines(one);
 
 		kthread_queue_delayed_work(&s->kworker, &one->ms_work, HZ);
 	}
@@ -1561,7 +1563,7 @@ static int sc16is7xx_probe(struct device *dev,
 		s->p[i].old_mctrl	= 0;
 		s->p[i].regmap		= regmaps[i];
 
-		mutex_init(&s->p[i].efr_lock);
+		mutex_init(&s->p[i].lock);
 
 		ret = uart_get_rs485_mode(&s->p[i].port);
 		if (ret)
diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c
index 03b58dc27b58d6..a944028502f25e 100644
--- a/fs/ext4/xattr.c
+++ b/fs/ext4/xattr.c
@@ -2017,12 +2017,13 @@ inserted:
 				 * stable so we can check the additional
 				 * reference fits.
 				 */
-				ref = le32_to_cpu(BHDR(new_bh)->h_refcount) + 1;
-				if (ref > EXT4_XATTR_REFCOUNT_MAX) {
+				ref = le32_to_cpu(BHDR(new_bh)->h_refcount);
+				if (ref >= EXT4_XATTR_REFCOUNT_MAX) {
 					/*
 					 * Undo everything and check mbcache
 					 * again.
 					 */
+					clear_bit(MBE_REUSABLE_B, &ce->e_flags);
 					unlock_buffer(new_bh);
 					dquot_free_block(inode,
 							 EXT4_C2B(EXT4_SB(sb),
@@ -2033,6 +2034,7 @@ inserted:
 					new_bh = NULL;
 					goto inserted;
 				}
+				ref++;
 				BHDR(new_bh)->h_refcount = cpu_to_le32(ref);
 				if (ref == EXT4_XATTR_REFCOUNT_MAX)
 					clear_bit(MBE_REUSABLE_B, &ce->e_flags);
@@ -2781,6 +2783,7 @@ retry:
 		    s_min_extra_isize) {
 			tried_min_extra_isize++;
 			new_extra_isize = s_min_extra_isize;
+			error = 0;
 			goto retry;
 		}
 		goto cleanup;
diff --git a/fs/iomap/buffered-io.c b/fs/iomap/buffered-io.c
index 243cb2ec76ed2e..d0cfc4c3389c7c 100644
--- a/fs/iomap/buffered-io.c
+++ b/fs/iomap/buffered-io.c
@@ -107,17 +107,24 @@ static void iomap_adjust_read_range(struct inode *inode, struct folio *folio,
 	 * to avoid reading in already uptodate ranges.
 	 */
 	if (iop) {
-		unsigned int i;
+		unsigned int i, blocks_skipped;
 
 		/* move forward for each leading block marked uptodate */
-		for (i = first; i <= last; i++) {
+		for (i = first; i <= last; i++)
 			if (!test_bit(i, iop->uptodate))
 				break;
-			*pos += block_size;
-			poff += block_size;
-			plen -= block_size;
-			first++;
+
+		blocks_skipped = i - first;
+		if (blocks_skipped) {
+			unsigned long block_offset = *pos & (block_size - 1);
+			unsigned bytes_skipped =
+				(blocks_skipped << block_bits) - block_offset;
+
+			*pos += bytes_skipped;
+			poff += bytes_skipped;
+			plen -= bytes_skipped;
 		}
+		first = i;
 
 		/* truncate len if we find any trailing uptodate block(s) */
 		for ( ; i <= last; i++) {
diff --git a/fs/ocfs2/xattr.c b/fs/ocfs2/xattr.c
index 1f22ad21ae6086..473a90848cb92a 100644
--- a/fs/ocfs2/xattr.c
+++ b/fs/ocfs2/xattr.c
@@ -740,12 +740,10 @@ static int ocfs2_xattr_extend_allocation(struct inode *inode,
 					 prev_clusters;
 
 		if (why != RESTART_NONE && clusters_to_add) {
-			/*
-			 * We can only fail in case the alloc file doesn't give
-			 * up enough clusters.
-			 */
-			BUG_ON(why == RESTART_META);
-
+			if (why == RESTART_META) {
+				status = -ENOSPC;
+				break;
+			}
 			credits = ocfs2_calc_extend_credits(inode->i_sb,
 							    &vb->vb_xv->xr_list);
 			status = ocfs2_extend_trans(handle, credits);
@@ -3214,6 +3212,14 @@ meta_guess:
 		} else
 			credits += OCFS2_SUBALLOC_ALLOC + 1;
 
+		/*
+		 * Reserve metadata for the new xattr's value extent tree.
+		 * The not_found path above adds credits for this tree but
+		 * omits meta_add, leaving meta_ac NULL for large values.
+		 */
+		if (xi->xi_value_len > OCFS2_XATTR_INLINE_SIZE)
+			meta_add += ocfs2_extend_meta_needed(&def_xv.xv.xr_list);
+
 		/*
 		 * This cluster will be used either for new bucket or for
 		 * new xattr block.
diff --git a/fs/xfs/libxfs/xfs_attr_leaf.c b/fs/xfs/libxfs/xfs_attr_leaf.c
index d76f6bd3d8b7ee..34d37cf00d7a9d 100644
--- a/fs/xfs/libxfs/xfs_attr_leaf.c
+++ b/fs/xfs/libxfs/xfs_attr_leaf.c
@@ -267,6 +267,13 @@ xfs_attr3_leaf_verify_entry(
 	 */
 	if (ent->flags & XFS_ATTR_LOCAL) {
 		lentry = xfs_attr3_leaf_name_local(leaf, idx);
+
+		/* Validate lentry pointer is within bounds before field access */
+		if ((char *)lentry >= buf_end)
+			return __this_address;
+		if ((char *)lentry + offsetof(struct xfs_attr_leaf_name_local, nameval) > buf_end)
+			return __this_address;
+
 		namesize = xfs_attr_leaf_entsize_local(lentry->namelen,
 				be16_to_cpu(lentry->valuelen));
 		name_end = (char *)lentry + namesize;
@@ -274,6 +281,13 @@ xfs_attr3_leaf_verify_entry(
 			return __this_address;
 	} else {
 		rentry = xfs_attr3_leaf_name_remote(leaf, idx);
+
+		/* Validate rentry pointer is within bounds before field access */
+		if ((char *)rentry >= buf_end)
+			return __this_address;
+		if ((char *)rentry + offsetof(struct xfs_attr_leaf_name_remote, name) > buf_end)
+			return __this_address;
+
 		namesize = xfs_attr_leaf_entsize_remote(rentry->namelen);
 		name_end = (char *)rentry + namesize;
 		if (rentry->namelen == 0)
diff --git a/fs/xfs/libxfs/xfs_log_recover.h b/fs/xfs/libxfs/xfs_log_recover.h
index a5100a11faf9cd..c59a30b9666b07 100644
--- a/fs/xfs/libxfs/xfs_log_recover.h
+++ b/fs/xfs/libxfs/xfs_log_recover.h
@@ -95,7 +95,7 @@ struct xlog_recover_item {
 	struct list_head	ri_list;
 	int			ri_cnt;	/* count of regions found */
 	int			ri_total;	/* total regions */
-	struct xfs_log_iovec	*ri_buf;	/* ptr to regions buffer */
+	struct kvec		*ri_buf;	/* ptr to regions buffer */
 	const struct xlog_recover_item_ops *ri_ops;
 };
 
@@ -108,7 +108,7 @@ struct xlog_recover {
 	struct list_head	r_itemq;	/* q for items */
 };
 
-#define ITEM_TYPE(i)	(*(unsigned short *)(i)->ri_buf[0].i_addr)
+#define ITEM_TYPE(i)	(*(unsigned short *)(i)->ri_buf[0].iov_base)
 
 #define	XLOG_RECOVER_CRCPASS	0
 #define	XLOG_RECOVER_PASS1	1
diff --git a/fs/xfs/xfs_attr_item.c b/fs/xfs/xfs_attr_item.c
index f947b58e9af4ac..91e45e8d914827 100644
--- a/fs/xfs/xfs_attr_item.c
+++ b/fs/xfs/xfs_attr_item.c
@@ -721,13 +721,13 @@ xlog_recover_attri_commit_pass2(
 
 	/* Validate xfs_attri_log_format before the large memory allocation */
 	len = sizeof(struct xfs_attri_log_format);
-	if (item->ri_buf[i].i_len != len) {
+	if (item->ri_buf[i].iov_len != len) {
 		XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp,
-				item->ri_buf[0].i_addr, item->ri_buf[0].i_len);
+				item->ri_buf[0].iov_base, item->ri_buf[0].iov_len);
 		return -EFSCORRUPTED;
 	}
 
-	attri_formatp = item->ri_buf[i].i_addr;
+	attri_formatp = item->ri_buf[i].iov_base;
 	if (!xfs_attri_validate(mp, attri_formatp)) {
 		XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp,
 				attri_formatp, len);
@@ -762,14 +762,14 @@ xlog_recover_attri_commit_pass2(
 	i++;
 
 	/* Validate the attr name */
-	if (item->ri_buf[i].i_len !=
+	if (item->ri_buf[i].iov_len !=
 			xlog_calc_iovec_len(attri_formatp->alfi_name_len)) {
 		XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp,
 				attri_formatp, len);
 		return -EFSCORRUPTED;
 	}
 
-	attr_name = item->ri_buf[i].i_addr;
+	attr_name = item->ri_buf[i].iov_base;
 	if (!xfs_attr_namecheck(attr_name, attri_formatp->alfi_name_len)) {
 		XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp,
 				attri_formatp, len);
@@ -779,14 +779,14 @@ xlog_recover_attri_commit_pass2(
 
 	/* Validate the attr value, if present */
 	if (attri_formatp->alfi_value_len != 0) {
-		if (item->ri_buf[i].i_len != xlog_calc_iovec_len(attri_formatp->alfi_value_len)) {
+		if (item->ri_buf[i].iov_len != xlog_calc_iovec_len(attri_formatp->alfi_value_len)) {
 			XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp,
-					item->ri_buf[0].i_addr,
-					item->ri_buf[0].i_len);
+					item->ri_buf[0].iov_base,
+					item->ri_buf[0].iov_len);
 			return -EFSCORRUPTED;
 		}
 
-		attr_value = item->ri_buf[i].i_addr;
+		attr_value = item->ri_buf[i].iov_base;
 		i++;
 	}
 
@@ -908,10 +908,10 @@ xlog_recover_attrd_commit_pass2(
 {
 	struct xfs_attrd_log_format	*attrd_formatp;
 
-	attrd_formatp = item->ri_buf[0].i_addr;
-	if (item->ri_buf[0].i_len != sizeof(struct xfs_attrd_log_format)) {
+	attrd_formatp = item->ri_buf[0].iov_base;
+	if (item->ri_buf[0].iov_len != sizeof(struct xfs_attrd_log_format)) {
 		XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, log->l_mp,
-				item->ri_buf[0].i_addr, item->ri_buf[0].i_len);
+				item->ri_buf[0].iov_base, item->ri_buf[0].iov_len);
 		return -EFSCORRUPTED;
 	}
 
diff --git a/fs/xfs/xfs_bmap_item.c b/fs/xfs/xfs_bmap_item.c
index db6b01262c451b..bccd598ee41f90 100644
--- a/fs/xfs/xfs_bmap_item.c
+++ b/fs/xfs/xfs_bmap_item.c
@@ -623,24 +623,24 @@ xlog_recover_bui_commit_pass2(
 	struct xfs_bui_log_format	*bui_formatp;
 	size_t				len;
 
-	bui_formatp = item->ri_buf[0].i_addr;
+	bui_formatp = item->ri_buf[0].iov_base;
 
-	if (item->ri_buf[0].i_len < xfs_bui_log_format_sizeof(0)) {
+	if (item->ri_buf[0].iov_len < xfs_bui_log_format_sizeof(0)) {
 		XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp,
-				item->ri_buf[0].i_addr, item->ri_buf[0].i_len);
+				item->ri_buf[0].iov_base, item->ri_buf[0].iov_len);
 		return -EFSCORRUPTED;
 	}
 
 	if (bui_formatp->bui_nextents != XFS_BUI_MAX_FAST_EXTENTS) {
 		XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp,
-				item->ri_buf[0].i_addr, item->ri_buf[0].i_len);
+				item->ri_buf[0].iov_base, item->ri_buf[0].iov_len);
 		return -EFSCORRUPTED;
 	}
 
 	len = xfs_bui_log_format_sizeof(bui_formatp->bui_nextents);
-	if (item->ri_buf[0].i_len != len) {
+	if (item->ri_buf[0].iov_len != len) {
 		XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp,
-				item->ri_buf[0].i_addr, item->ri_buf[0].i_len);
+				item->ri_buf[0].iov_base, item->ri_buf[0].iov_len);
 		return -EFSCORRUPTED;
 	}
 
@@ -677,10 +677,10 @@ xlog_recover_bud_commit_pass2(
 {
 	struct xfs_bud_log_format	*bud_formatp;
 
-	bud_formatp = item->ri_buf[0].i_addr;
-	if (item->ri_buf[0].i_len != sizeof(struct xfs_bud_log_format)) {
+	bud_formatp = item->ri_buf[0].iov_base;
+	if (item->ri_buf[0].iov_len != sizeof(struct xfs_bud_log_format)) {
 		XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, log->l_mp,
-				item->ri_buf[0].i_addr, item->ri_buf[0].i_len);
+				item->ri_buf[0].iov_base, item->ri_buf[0].iov_len);
 		return -EFSCORRUPTED;
 	}
 
diff --git a/fs/xfs/xfs_buf_item.c b/fs/xfs/xfs_buf_item.c
index 12134c79301a51..72d6e2dd5ef54b 100644
--- a/fs/xfs/xfs_buf_item.c
+++ b/fs/xfs/xfs_buf_item.c
@@ -35,16 +35,16 @@ static inline struct xfs_buf_log_item *BUF_ITEM(struct xfs_log_item *lip)
 /* Is this log iovec plausibly large enough to contain the buffer log format? */
 bool
 xfs_buf_log_check_iovec(
-	struct xfs_log_iovec		*iovec)
+	struct kvec			*iovec)
 {
-	struct xfs_buf_log_format	*blfp = iovec->i_addr;
+	struct xfs_buf_log_format	*blfp = iovec->iov_base;
 	char				*bmp_end;
 	char				*item_end;
 
-	if (offsetof(struct xfs_buf_log_format, blf_data_map) > iovec->i_len)
+	if (offsetof(struct xfs_buf_log_format, blf_data_map) > iovec->iov_len)
 		return false;
 
-	item_end = (char *)iovec->i_addr + iovec->i_len;
+	item_end = (char *)iovec->iov_base + iovec->iov_len;
 	bmp_end = (char *)&blfp->blf_data_map[blfp->blf_map_size];
 	return bmp_end <= item_end;
 }
diff --git a/fs/xfs/xfs_buf_item.h b/fs/xfs/xfs_buf_item.h
index 4d8a6aece995d9..7ddda0aa9dac26 100644
--- a/fs/xfs/xfs_buf_item.h
+++ b/fs/xfs/xfs_buf_item.h
@@ -67,7 +67,7 @@ static inline void xfs_buf_dquot_io_fail(struct xfs_buf *bp)
 }
 #endif /* CONFIG_XFS_QUOTA */
 void	xfs_buf_iodone(struct xfs_buf *);
-bool	xfs_buf_log_check_iovec(struct xfs_log_iovec *iovec);
+bool	xfs_buf_log_check_iovec(struct kvec *iovec);
 
 extern struct kmem_cache	*xfs_buf_item_cache;
 
diff --git a/fs/xfs/xfs_buf_item_recover.c b/fs/xfs/xfs_buf_item_recover.c
index 43167f543afc33..39ca2c658c10ba 100644
--- a/fs/xfs/xfs_buf_item_recover.c
+++ b/fs/xfs/xfs_buf_item_recover.c
@@ -154,7 +154,7 @@ STATIC enum xlog_recover_reorder
 xlog_recover_buf_reorder(
 	struct xlog_recover_item	*item)
 {
-	struct xfs_buf_log_format	*buf_f = item->ri_buf[0].i_addr;
+	struct xfs_buf_log_format	*buf_f = item->ri_buf[0].iov_base;
 
 	if (buf_f->blf_flags & XFS_BLF_CANCEL)
 		return XLOG_REORDER_CANCEL_LIST;
@@ -168,7 +168,7 @@ xlog_recover_buf_ra_pass2(
 	struct xlog                     *log,
 	struct xlog_recover_item        *item)
 {
-	struct xfs_buf_log_format	*buf_f = item->ri_buf[0].i_addr;
+	struct xfs_buf_log_format	*buf_f = item->ri_buf[0].iov_base;
 
 	xlog_buf_readahead(log, buf_f->blf_blkno, buf_f->blf_len, NULL);
 }
@@ -182,11 +182,11 @@ xlog_recover_buf_commit_pass1(
 	struct xlog			*log,
 	struct xlog_recover_item	*item)
 {
-	struct xfs_buf_log_format	*bf = item->ri_buf[0].i_addr;
+	struct xfs_buf_log_format	*bf = item->ri_buf[0].iov_base;
 
 	if (!xfs_buf_log_check_iovec(&item->ri_buf[0])) {
-		xfs_err(log->l_mp, "bad buffer log item size (%d)",
-				item->ri_buf[0].i_len);
+		xfs_err(log->l_mp, "bad buffer log item size (%zd)",
+				item->ri_buf[0].iov_len);
 		return -EFSCORRUPTED;
 	}
 
@@ -441,7 +441,7 @@ xlog_recover_validate_buf_type(
  * given buffer.  The bitmap in the buf log format structure indicates
  * where to place the logged data.
  */
-STATIC void
+STATIC int
 xlog_recover_do_reg_buffer(
 	struct xfs_mount		*mp,
 	struct xlog_recover_item	*item,
@@ -467,10 +467,26 @@ xlog_recover_do_reg_buffer(
 		nbits = xfs_contig_bits(buf_f->blf_data_map,
 					buf_f->blf_map_size, bit);
 		ASSERT(nbits > 0);
-		ASSERT(item->ri_buf[i].i_addr != NULL);
-		ASSERT(item->ri_buf[i].i_len % XFS_BLF_CHUNK == 0);
-		ASSERT(BBTOB(bp->b_length) >=
-		       ((uint)bit << XFS_BLF_SHIFT) + (nbits << XFS_BLF_SHIFT));
+		ASSERT(item->ri_buf[i].iov_base != NULL);
+		ASSERT(item->ri_buf[i].iov_len % XFS_BLF_CHUNK == 0);
+		/*
+		 * The bitmap is only trustworthy to the extent that it
+		 * describes a region that actually fits inside the buffer we
+		 * read in based on the (attacker-controlled) blf_len.  Do not
+		 * rely on an ASSERT() for this -- it compiles away entirely on
+		 * non-DEBUG kernels, which is exactly where this matters, so
+		 * validate it for real and abort recovery of this buffer rather
+		 * than copying past the end of it.
+		 */
+		if (XFS_IS_CORRUPT(mp, BBTOB(bp->b_length) <
+				((uint)bit << XFS_BLF_SHIFT) +
+				(nbits << XFS_BLF_SHIFT))) {
+			xfs_alert(mp,
+	"Bad buffer log item dirty bitmap (bit %d, nbits %d) for %d-byte buffer at daddr 0x%llx.",
+				bit, nbits, BBTOB(bp->b_length),
+				xfs_buf_daddr(bp));
+			return -EFSCORRUPTED;
+		}
 
 		/*
 		 * The dirty regions logged in the buffer, even though
@@ -480,8 +496,8 @@ xlog_recover_do_reg_buffer(
 		 * the log. Hence we need to trim nbits back to the length of
 		 * the current region being copied out of the log.
 		 */
-		if (item->ri_buf[i].i_len < (nbits << XFS_BLF_SHIFT))
-			nbits = item->ri_buf[i].i_len >> XFS_BLF_SHIFT;
+		if (item->ri_buf[i].iov_len < (nbits << XFS_BLF_SHIFT))
+			nbits = item->ri_buf[i].iov_len >> XFS_BLF_SHIFT;
 
 		/*
 		 * Do a sanity check if this is a dquot buffer. Just checking
@@ -491,18 +507,18 @@ xlog_recover_do_reg_buffer(
 		fa = NULL;
 		if (buf_f->blf_flags &
 		   (XFS_BLF_UDQUOT_BUF|XFS_BLF_PDQUOT_BUF|XFS_BLF_GDQUOT_BUF)) {
-			if (item->ri_buf[i].i_addr == NULL) {
+			if (item->ri_buf[i].iov_base == NULL) {
 				xfs_alert(mp,
 					"XFS: NULL dquot in %s.", __func__);
 				goto next;
 			}
-			if (item->ri_buf[i].i_len < size_disk_dquot) {
+			if (item->ri_buf[i].iov_len < size_disk_dquot) {
 				xfs_alert(mp,
-					"XFS: dquot too small (%d) in %s.",
-					item->ri_buf[i].i_len, __func__);
+					"XFS: dquot too small (%zd) in %s.",
+					item->ri_buf[i].iov_len, __func__);
 				goto next;
 			}
-			fa = xfs_dquot_verify(mp, item->ri_buf[i].i_addr, -1);
+			fa = xfs_dquot_verify(mp, item->ri_buf[i].iov_base, -1);
 			if (fa) {
 				xfs_alert(mp,
 	"dquot corrupt at %pS trying to replay into block 0x%llx",
@@ -513,7 +529,7 @@ xlog_recover_do_reg_buffer(
 
 		memcpy(xfs_buf_offset(bp,
 			(uint)bit << XFS_BLF_SHIFT),	/* dest */
-			item->ri_buf[i].i_addr,		/* source */
+			item->ri_buf[i].iov_base,		/* source */
 			nbits<<XFS_BLF_SHIFT);		/* length */
  next:
 		i++;
@@ -524,6 +540,7 @@ xlog_recover_do_reg_buffer(
 	ASSERT(i == item->ri_total);
 
 	xlog_recover_validate_buf_type(mp, bp, buf_f, current_lsn);
+	return 0;
 }
 
 /*
@@ -532,10 +549,10 @@ xlog_recover_do_reg_buffer(
  * (ie. USR or GRP), then just toss this buffer away; don't recover it.
  * Else, treat it as a regular buffer and do recovery.
  *
- * Return false if the buffer was tossed and true if we recovered the buffer to
- * indicate to the caller if the buffer needs writing.
+ * Return 0 if the buffer was not recovered (tossed), 1 if it was recovered and
+ * needs writing, or a negative errno if recovery of the buffer failed.
  */
-STATIC bool
+STATIC int
 xlog_recover_do_dquot_buffer(
 	struct xfs_mount		*mp,
 	struct xlog			*log,
@@ -544,6 +561,7 @@ xlog_recover_do_dquot_buffer(
 	struct xfs_buf_log_format	*buf_f)
 {
 	uint			type;
+	int			error;
 
 	trace_xfs_log_recover_buf_dquot_buf(log, buf_f);
 
@@ -551,7 +569,7 @@ xlog_recover_do_dquot_buffer(
 	 * Filesystems are required to send in quota flags at mount time.
 	 */
 	if (!mp->m_qflags)
-		return false;
+		return 0;
 
 	type = 0;
 	if (buf_f->blf_flags & XFS_BLF_UDQUOT_BUF)
@@ -564,10 +582,12 @@ xlog_recover_do_dquot_buffer(
 	 * This type of quotas was turned off, so ignore this buffer
 	 */
 	if (log->l_quotaoffs_flag & type)
-		return false;
+		return 0;
 
-	xlog_recover_do_reg_buffer(mp, item, bp, buf_f, NULLCOMMITLSN);
-	return true;
+	error = xlog_recover_do_reg_buffer(mp, item, bp, buf_f, NULLCOMMITLSN);
+	if (error)
+		return error;
+	return 1;
 }
 
 /*
@@ -649,8 +669,8 @@ xlog_recover_do_inode_buffer(
 		if (next_unlinked_offset < reg_buf_offset)
 			continue;
 
-		ASSERT(item->ri_buf[item_index].i_addr != NULL);
-		ASSERT((item->ri_buf[item_index].i_len % XFS_BLF_CHUNK) == 0);
+		ASSERT(item->ri_buf[item_index].iov_base != NULL);
+		ASSERT((item->ri_buf[item_index].iov_len % XFS_BLF_CHUNK) == 0);
 		ASSERT((reg_buf_offset + reg_buf_bytes) <= BBTOB(bp->b_length));
 
 		/*
@@ -658,7 +678,7 @@ xlog_recover_do_inode_buffer(
 		 * current di_next_unlinked field.  Extract its value
 		 * and copy it to the buffer copy.
 		 */
-		logged_nextp = item->ri_buf[item_index].i_addr +
+		logged_nextp = item->ri_buf[item_index].iov_base +
 				next_unlinked_offset - reg_buf_offset;
 		if (XFS_IS_CORRUPT(mp, *logged_nextp == 0)) {
 			xfs_alert(mp,
@@ -887,7 +907,7 @@ xlog_recover_buf_commit_pass2(
 	struct xlog_recover_item	*item,
 	xfs_lsn_t			current_lsn)
 {
-	struct xfs_buf_log_format	*buf_f = item->ri_buf[0].i_addr;
+	struct xfs_buf_log_format	*buf_f = item->ri_buf[0].iov_base;
 	struct xfs_mount		*mp = log->l_mp;
 	struct xfs_buf			*bp;
 	int				error;
@@ -962,13 +982,16 @@ xlog_recover_buf_commit_pass2(
 			goto out_release;
 	} else if (buf_f->blf_flags &
 		  (XFS_BLF_UDQUOT_BUF|XFS_BLF_PDQUOT_BUF|XFS_BLF_GDQUOT_BUF)) {
-		bool	dirty;
-
-		dirty = xlog_recover_do_dquot_buffer(mp, log, item, bp, buf_f);
-		if (!dirty)
+		error = xlog_recover_do_dquot_buffer(mp, log, item, bp, buf_f);
+		if (error <= 0)
 			goto out_release;
+		/* write dirty buffer */
+		error = 0;
 	} else {
-		xlog_recover_do_reg_buffer(mp, item, bp, buf_f, current_lsn);
+		error = xlog_recover_do_reg_buffer(mp, item, bp, buf_f,
+						   current_lsn);
+		if (error)
+			goto out_release;
 	}
 
 	/*
diff --git a/fs/xfs/xfs_dquot_item_recover.c b/fs/xfs/xfs_dquot_item_recover.c
index adda4e0dc41c44..590412c8e61506 100644
--- a/fs/xfs/xfs_dquot_item_recover.c
+++ b/fs/xfs/xfs_dquot_item_recover.c
@@ -34,10 +34,10 @@ xlog_recover_dquot_ra_pass2(
 	if (mp->m_qflags == 0)
 		return;
 
-	recddq = item->ri_buf[1].i_addr;
+	recddq = item->ri_buf[1].iov_base;
 	if (recddq == NULL)
 		return;
-	if (item->ri_buf[1].i_len < sizeof(struct xfs_disk_dquot))
+	if (item->ri_buf[1].iov_len < sizeof(struct xfs_disk_dquot))
 		return;
 
 	type = recddq->d_type & XFS_DQTYPE_REC_MASK;
@@ -45,7 +45,7 @@ xlog_recover_dquot_ra_pass2(
 	if (log->l_quotaoffs_flag & type)
 		return;
 
-	dq_f = item->ri_buf[0].i_addr;
+	dq_f = item->ri_buf[0].iov_base;
 	ASSERT(dq_f);
 	ASSERT(dq_f->qlf_len == 1);
 
@@ -79,14 +79,14 @@ xlog_recover_dquot_commit_pass2(
 	if (mp->m_qflags == 0)
 		return 0;
 
-	recddq = item->ri_buf[1].i_addr;
+	recddq = item->ri_buf[1].iov_base;
 	if (recddq == NULL) {
 		xfs_alert(log->l_mp, "NULL dquot in %s.", __func__);
 		return -EFSCORRUPTED;
 	}
-	if (item->ri_buf[1].i_len < sizeof(struct xfs_disk_dquot)) {
-		xfs_alert(log->l_mp, "dquot too small (%d) in %s.",
-			item->ri_buf[1].i_len, __func__);
+	if (item->ri_buf[1].iov_len < sizeof(struct xfs_disk_dquot)) {
+		xfs_alert(log->l_mp, "dquot too small (%zd) in %s.",
+			item->ri_buf[1].iov_len, __func__);
 		return -EFSCORRUPTED;
 	}
 
@@ -108,7 +108,7 @@ xlog_recover_dquot_commit_pass2(
 	 * The other possibility, of course, is that the quota subsystem was
 	 * removed since the last mount - ENOSYS.
 	 */
-	dq_f = item->ri_buf[0].i_addr;
+	dq_f = item->ri_buf[0].iov_base;
 	ASSERT(dq_f);
 	fa = xfs_dquot_verify(mp, recddq, dq_f->qlf_id);
 	if (fa) {
@@ -147,7 +147,7 @@ xlog_recover_dquot_commit_pass2(
 		}
 	}
 
-	memcpy(ddq, recddq, item->ri_buf[1].i_len);
+	memcpy(ddq, recddq, item->ri_buf[1].iov_len);
 	if (xfs_has_crc(mp)) {
 		xfs_update_cksum((char *)dqb, sizeof(struct xfs_dqblk),
 				 XFS_DQUOT_CRC_OFF);
@@ -192,7 +192,7 @@ xlog_recover_quotaoff_commit_pass1(
 	struct xlog			*log,
 	struct xlog_recover_item	*item)
 {
-	struct xfs_qoff_logformat	*qoff_f = item->ri_buf[0].i_addr;
+	struct xfs_qoff_logformat	*qoff_f = item->ri_buf[0].iov_base;
 	ASSERT(qoff_f);
 
 	/*
diff --git a/fs/xfs/xfs_extfree_item.c b/fs/xfs/xfs_extfree_item.c
index be9f279a5c75bb..f843484046267b 100644
--- a/fs/xfs/xfs_extfree_item.c
+++ b/fs/xfs/xfs_extfree_item.c
@@ -171,15 +171,18 @@ xfs_efi_init(
  * It will handle the conversion of formats if necessary.
  */
 STATIC int
-xfs_efi_copy_format(xfs_log_iovec_t *buf, xfs_efi_log_format_t *dst_efi_fmt)
+xfs_efi_copy_format(
+	struct kvec			*buf,
+	struct xfs_efi_log_format	*dst_efi_fmt)
 {
-	xfs_efi_log_format_t *src_efi_fmt = buf->i_addr;
-	uint i;
-	uint len = xfs_efi_log_format_sizeof(src_efi_fmt->efi_nextents);
-	uint len32 = xfs_efi_log_format32_sizeof(src_efi_fmt->efi_nextents);
-	uint len64 = xfs_efi_log_format64_sizeof(src_efi_fmt->efi_nextents);
+	struct xfs_efi_log_format	*src_efi_fmt = buf->iov_base;
+	uint				len, len32, len64, i;
 
-	if (buf->i_len == len) {
+	len = xfs_efi_log_format_sizeof(src_efi_fmt->efi_nextents);
+	len32 = xfs_efi_log_format32_sizeof(src_efi_fmt->efi_nextents);
+	len64 = xfs_efi_log_format64_sizeof(src_efi_fmt->efi_nextents);
+
+	if (buf->iov_len == len) {
 		memcpy(dst_efi_fmt, src_efi_fmt,
 		       offsetof(struct xfs_efi_log_format, efi_extents));
 		for (i = 0; i < src_efi_fmt->efi_nextents; i++)
@@ -187,8 +190,8 @@ xfs_efi_copy_format(xfs_log_iovec_t *buf, xfs_efi_log_format_t *dst_efi_fmt)
 			       &src_efi_fmt->efi_extents[i],
 			       sizeof(struct xfs_extent));
 		return 0;
-	} else if (buf->i_len == len32) {
-		xfs_efi_log_format_32_t *src_efi_fmt_32 = buf->i_addr;
+	} else if (buf->iov_len == len32) {
+		xfs_efi_log_format_32_t *src_efi_fmt_32 = buf->iov_base;
 
 		dst_efi_fmt->efi_type     = src_efi_fmt_32->efi_type;
 		dst_efi_fmt->efi_size     = src_efi_fmt_32->efi_size;
@@ -201,8 +204,8 @@ xfs_efi_copy_format(xfs_log_iovec_t *buf, xfs_efi_log_format_t *dst_efi_fmt)
 				src_efi_fmt_32->efi_extents[i].ext_len;
 		}
 		return 0;
-	} else if (buf->i_len == len64) {
-		xfs_efi_log_format_64_t *src_efi_fmt_64 = buf->i_addr;
+	} else if (buf->iov_len == len64) {
+		xfs_efi_log_format_64_t *src_efi_fmt_64 = buf->iov_base;
 
 		dst_efi_fmt->efi_type     = src_efi_fmt_64->efi_type;
 		dst_efi_fmt->efi_size     = src_efi_fmt_64->efi_size;
@@ -216,8 +219,8 @@ xfs_efi_copy_format(xfs_log_iovec_t *buf, xfs_efi_log_format_t *dst_efi_fmt)
 		}
 		return 0;
 	}
-	XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, NULL, buf->i_addr,
-			buf->i_len);
+	XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, NULL, buf->iov_base,
+			buf->iov_len);
 	return -EFSCORRUPTED;
 }
 
@@ -739,11 +742,11 @@ xlog_recover_efi_commit_pass2(
 	struct xfs_efi_log_format	*efi_formatp;
 	int				error;
 
-	efi_formatp = item->ri_buf[0].i_addr;
+	efi_formatp = item->ri_buf[0].iov_base;
 
-	if (item->ri_buf[0].i_len < xfs_efi_log_format_sizeof(0)) {
+	if (item->ri_buf[0].iov_len < xfs_efi_log_format_sizeof(0)) {
 		XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp,
-				item->ri_buf[0].i_addr, item->ri_buf[0].i_len);
+				item->ri_buf[0].iov_base, item->ri_buf[0].iov_len);
 		return -EFSCORRUPTED;
 	}
 
@@ -783,9 +786,9 @@ xlog_recover_efd_commit_pass2(
 	xfs_lsn_t			lsn)
 {
 	struct xfs_efd_log_format	*efd_formatp;
-	int				buflen = item->ri_buf[0].i_len;
+	int				buflen = item->ri_buf[0].iov_len;
 
-	efd_formatp = item->ri_buf[0].i_addr;
+	efd_formatp = item->ri_buf[0].iov_base;
 
 	if (buflen < sizeof(struct xfs_efd_log_format)) {
 		XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, log->l_mp,
@@ -793,9 +796,9 @@ xlog_recover_efd_commit_pass2(
 		return -EFSCORRUPTED;
 	}
 
-	if (item->ri_buf[0].i_len != xfs_efd_log_format32_sizeof(
+	if (item->ri_buf[0].iov_len != xfs_efd_log_format32_sizeof(
 						efd_formatp->efd_nextents) &&
-	    item->ri_buf[0].i_len != xfs_efd_log_format64_sizeof(
+	    item->ri_buf[0].iov_len != xfs_efd_log_format64_sizeof(
 						efd_formatp->efd_nextents)) {
 		XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, log->l_mp,
 				efd_formatp, buflen);
diff --git a/fs/xfs/xfs_icreate_item.c b/fs/xfs/xfs_icreate_item.c
index b05314d48176f7..a01091444b6f37 100644
--- a/fs/xfs/xfs_icreate_item.c
+++ b/fs/xfs/xfs_icreate_item.c
@@ -158,7 +158,7 @@ xlog_recover_icreate_commit_pass2(
 	int				nbufs;
 	int				i;
 
-	icl = (struct xfs_icreate_log *)item->ri_buf[0].i_addr;
+	icl = (struct xfs_icreate_log *)item->ri_buf[0].iov_base;
 	if (icl->icl_type != XFS_LI_ICREATE) {
 		xfs_warn(log->l_mp, "xlog_recover_do_icreate_trans: bad type");
 		return -EINVAL;
diff --git a/fs/xfs/xfs_inode_item.c b/fs/xfs/xfs_inode_item.c
index 36f25a138e3bb9..2cc2c0fffd89d3 100644
--- a/fs/xfs/xfs_inode_item.c
+++ b/fs/xfs/xfs_inode_item.c
@@ -1177,12 +1177,12 @@ xfs_iflush_shutdown_abort(
  */
 int
 xfs_inode_item_format_convert(
-	struct xfs_log_iovec		*buf,
+	struct kvec			*buf,
 	struct xfs_inode_log_format	*in_f)
 {
-	struct xfs_inode_log_format_32	*in_f32 = buf->i_addr;
+	struct xfs_inode_log_format_32	*in_f32 = buf->iov_base;
 
-	if (buf->i_len != sizeof(*in_f32)) {
+	if (buf->iov_len != sizeof(*in_f32)) {
 		XFS_ERROR_REPORT(__func__, XFS_ERRLEVEL_LOW, NULL);
 		return -EFSCORRUPTED;
 	}
diff --git a/fs/xfs/xfs_inode_item.h b/fs/xfs/xfs_inode_item.h
index 377e060078044e..ba92ce11a01111 100644
--- a/fs/xfs/xfs_inode_item.h
+++ b/fs/xfs/xfs_inode_item.h
@@ -46,8 +46,8 @@ extern void xfs_inode_item_init(struct xfs_inode *, struct xfs_mount *);
 extern void xfs_inode_item_destroy(struct xfs_inode *);
 extern void xfs_iflush_abort(struct xfs_inode *);
 extern void xfs_iflush_shutdown_abort(struct xfs_inode *);
-extern int xfs_inode_item_format_convert(xfs_log_iovec_t *,
-					 struct xfs_inode_log_format *);
+int xfs_inode_item_format_convert(struct kvec *buf,
+		struct xfs_inode_log_format *in_f);
 
 extern struct kmem_cache	*xfs_ili_cache;
 
diff --git a/fs/xfs/xfs_inode_item_recover.c b/fs/xfs/xfs_inode_item_recover.c
index 144198a6b2702c..a4a2275d791621 100644
--- a/fs/xfs/xfs_inode_item_recover.c
+++ b/fs/xfs/xfs_inode_item_recover.c
@@ -28,13 +28,13 @@ xlog_recover_inode_ra_pass2(
 	struct xlog                     *log,
 	struct xlog_recover_item        *item)
 {
-	if (item->ri_buf[0].i_len == sizeof(struct xfs_inode_log_format)) {
-		struct xfs_inode_log_format	*ilfp = item->ri_buf[0].i_addr;
+	if (item->ri_buf[0].iov_len == sizeof(struct xfs_inode_log_format)) {
+		struct xfs_inode_log_format	*ilfp = item->ri_buf[0].iov_base;
 
 		xlog_buf_readahead(log, ilfp->ilf_blkno, ilfp->ilf_len,
 				   &xfs_inode_buf_ra_ops);
 	} else {
-		struct xfs_inode_log_format_32	*ilfp = item->ri_buf[0].i_addr;
+		struct xfs_inode_log_format_32	*ilfp = item->ri_buf[0].iov_base;
 
 		xlog_buf_readahead(log, ilfp->ilf_blkno, ilfp->ilf_len,
 				   &xfs_inode_buf_ra_ops);
@@ -288,8 +288,8 @@ xlog_recover_inode_commit_pass2(
 	int				need_free = 0;
 	xfs_failaddr_t			fa;
 
-	if (item->ri_buf[0].i_len == sizeof(struct xfs_inode_log_format)) {
-		in_f = item->ri_buf[0].i_addr;
+	if (item->ri_buf[0].iov_len == sizeof(struct xfs_inode_log_format)) {
+		in_f = item->ri_buf[0].iov_base;
 	} else {
 		in_f = kmem_alloc(sizeof(struct xfs_inode_log_format), 0);
 		need_free = 1;
@@ -327,7 +327,7 @@ xlog_recover_inode_commit_pass2(
 		error = -EFSCORRUPTED;
 		goto out_release;
 	}
-	ldip = item->ri_buf[1].i_addr;
+	ldip = item->ri_buf[1].iov_base;
 	if (XFS_IS_CORRUPT(mp, ldip->di_magic != XFS_DINODE_MAGIC)) {
 		xfs_alert(mp,
 			"%s: Bad inode log record, rec ptr "PTR_FMT", ino %lld",
@@ -432,12 +432,12 @@ xlog_recover_inode_commit_pass2(
 		goto out_release;
 	}
 	isize = xfs_log_dinode_size(mp);
-	if (unlikely(item->ri_buf[1].i_len > isize)) {
+	if (unlikely(item->ri_buf[1].iov_len > isize)) {
 		XFS_CORRUPTION_ERROR("Bad log dinode size", XFS_ERRLEVEL_LOW,
 				     mp, ldip, sizeof(*ldip));
 		xfs_alert(mp,
-			"Bad inode 0x%llx log dinode size 0x%x",
-			in_f->ilf_ino, item->ri_buf[1].i_len);
+			"Bad inode 0x%llx log dinode size 0x%zx",
+			in_f->ilf_ino, item->ri_buf[1].iov_len);
 		error = -EFSCORRUPTED;
 		goto out_release;
 	}
@@ -460,8 +460,8 @@ xlog_recover_inode_commit_pass2(
 
 	if (in_f->ilf_size == 2)
 		goto out_owner_change;
-	len = item->ri_buf[2].i_len;
-	src = item->ri_buf[2].i_addr;
+	len = item->ri_buf[2].iov_len;
+	src = item->ri_buf[2].iov_base;
 	ASSERT(in_f->ilf_size <= 4);
 	ASSERT((in_f->ilf_size == 3) || (fields & XFS_ILOG_AFORK));
 	ASSERT(!(fields & XFS_ILOG_DFORK) ||
@@ -498,8 +498,8 @@ xlog_recover_inode_commit_pass2(
 		} else {
 			attr_index = 2;
 		}
-		len = item->ri_buf[attr_index].i_len;
-		src = item->ri_buf[attr_index].i_addr;
+		len = item->ri_buf[attr_index].iov_len;
+		src = item->ri_buf[attr_index].iov_base;
 		ASSERT(len == xlog_calc_iovec_len(in_f->ilf_asize));
 
 		switch (in_f->ilf_fields & XFS_ILOG_AFORK) {
diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c
index 3e9793d35d6351..ffd52f5a4b897c 100644
--- a/fs/xfs/xfs_log_recover.c
+++ b/fs/xfs/xfs_log_recover.c
@@ -2088,15 +2088,15 @@ xlog_recover_add_to_cont_trans(
 	item = list_entry(trans->r_itemq.prev, struct xlog_recover_item,
 			  ri_list);
 
-	old_ptr = item->ri_buf[item->ri_cnt-1].i_addr;
-	old_len = item->ri_buf[item->ri_cnt-1].i_len;
+	old_ptr = item->ri_buf[item->ri_cnt-1].iov_base;
+	old_len = item->ri_buf[item->ri_cnt-1].iov_len;
 
 	ptr = kvrealloc(old_ptr, old_len, len + old_len, GFP_KERNEL);
 	if (!ptr)
 		return -ENOMEM;
 	memcpy(&ptr[old_len], dp, len);
-	item->ri_buf[item->ri_cnt-1].i_len += len;
-	item->ri_buf[item->ri_cnt-1].i_addr = ptr;
+	item->ri_buf[item->ri_cnt-1].iov_len += len;
+	item->ri_buf[item->ri_cnt-1].iov_base = ptr;
 	trace_xfs_log_recover_item_add_cont(log, trans, item, 0);
 	return 0;
 }
@@ -2181,7 +2181,7 @@ xlog_recover_add_to_trans(
 
 		item->ri_total = in_f->ilf_size;
 		item->ri_buf =
-			kmem_zalloc(item->ri_total * sizeof(xfs_log_iovec_t),
+			kmem_zalloc(item->ri_total * sizeof(*item->ri_buf),
 				    0);
 	}
 
@@ -2195,8 +2195,8 @@ xlog_recover_add_to_trans(
 	}
 
 	/* Description region is ri_buf[0] */
-	item->ri_buf[item->ri_cnt].i_addr = ptr;
-	item->ri_buf[item->ri_cnt].i_len  = len;
+	item->ri_buf[item->ri_cnt].iov_base = ptr;
+	item->ri_buf[item->ri_cnt].iov_len  = len;
 	item->ri_cnt++;
 	trace_xfs_log_recover_item_add(log, trans, item, 0);
 	return 0;
@@ -2220,7 +2220,7 @@ xlog_recover_free_trans(
 		/* Free the regions in the item. */
 		list_del(&item->ri_list);
 		for (i = 0; i < item->ri_cnt; i++)
-			kmem_free(item->ri_buf[i].i_addr);
+			kmem_free(item->ri_buf[i].iov_base);
 		/* Free the item itself */
 		kmem_free(item->ri_buf);
 		kmem_free(item);
diff --git a/fs/xfs/xfs_refcount_item.c b/fs/xfs/xfs_refcount_item.c
index dfd7b824e32b6d..f6ad0e8dbe5b4e 100644
--- a/fs/xfs/xfs_refcount_item.c
+++ b/fs/xfs/xfs_refcount_item.c
@@ -650,18 +650,18 @@ xlog_recover_cui_commit_pass2(
 	struct xfs_cui_log_format	*cui_formatp;
 	size_t				len;
 
-	cui_formatp = item->ri_buf[0].i_addr;
+	cui_formatp = item->ri_buf[0].iov_base;
 
-	if (item->ri_buf[0].i_len < xfs_cui_log_format_sizeof(0)) {
+	if (item->ri_buf[0].iov_len < xfs_cui_log_format_sizeof(0)) {
 		XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp,
-				item->ri_buf[0].i_addr, item->ri_buf[0].i_len);
+				item->ri_buf[0].iov_base, item->ri_buf[0].iov_len);
 		return -EFSCORRUPTED;
 	}
 
 	len = xfs_cui_log_format_sizeof(cui_formatp->cui_nextents);
-	if (item->ri_buf[0].i_len != len) {
+	if (item->ri_buf[0].iov_len != len) {
 		XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp,
-				item->ri_buf[0].i_addr, item->ri_buf[0].i_len);
+				item->ri_buf[0].iov_base, item->ri_buf[0].iov_len);
 		return -EFSCORRUPTED;
 	}
 
@@ -698,10 +698,10 @@ xlog_recover_cud_commit_pass2(
 {
 	struct xfs_cud_log_format	*cud_formatp;
 
-	cud_formatp = item->ri_buf[0].i_addr;
-	if (item->ri_buf[0].i_len != sizeof(struct xfs_cud_log_format)) {
+	cud_formatp = item->ri_buf[0].iov_base;
+	if (item->ri_buf[0].iov_len != sizeof(struct xfs_cud_log_format)) {
 		XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, log->l_mp,
-				item->ri_buf[0].i_addr, item->ri_buf[0].i_len);
+				item->ri_buf[0].iov_base, item->ri_buf[0].iov_len);
 		return -EFSCORRUPTED;
 	}
 
diff --git a/fs/xfs/xfs_rmap_item.c b/fs/xfs/xfs_rmap_item.c
index 2043cea261c057..53606d7726ba4b 100644
--- a/fs/xfs/xfs_rmap_item.c
+++ b/fs/xfs/xfs_rmap_item.c
@@ -664,18 +664,18 @@ xlog_recover_rui_commit_pass2(
 	struct xfs_rui_log_format	*rui_formatp;
 	size_t				len;
 
-	rui_formatp = item->ri_buf[0].i_addr;
+	rui_formatp = item->ri_buf[0].iov_base;
 
-	if (item->ri_buf[0].i_len < xfs_rui_log_format_sizeof(0)) {
+	if (item->ri_buf[0].iov_len < xfs_rui_log_format_sizeof(0)) {
 		XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp,
-				item->ri_buf[0].i_addr, item->ri_buf[0].i_len);
+				item->ri_buf[0].iov_base, item->ri_buf[0].iov_len);
 		return -EFSCORRUPTED;
 	}
 
 	len = xfs_rui_log_format_sizeof(rui_formatp->rui_nextents);
-	if (item->ri_buf[0].i_len != len) {
+	if (item->ri_buf[0].iov_len != len) {
 		XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp,
-				item->ri_buf[0].i_addr, item->ri_buf[0].i_len);
+				item->ri_buf[0].iov_base, item->ri_buf[0].iov_len);
 		return -EFSCORRUPTED;
 	}
 
@@ -712,10 +712,10 @@ xlog_recover_rud_commit_pass2(
 {
 	struct xfs_rud_log_format	*rud_formatp;
 
-	rud_formatp = item->ri_buf[0].i_addr;
-	if (item->ri_buf[0].i_len != sizeof(struct xfs_rud_log_format)) {
+	rud_formatp = item->ri_buf[0].iov_base;
+	if (item->ri_buf[0].iov_len != sizeof(struct xfs_rud_log_format)) {
 		XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, log->l_mp,
-				rud_formatp, item->ri_buf[0].i_len);
+				rud_formatp, item->ri_buf[0].iov_len);
 		return -EFSCORRUPTED;
 	}
 
diff --git a/fs/xfs/xfs_trans.h b/fs/xfs/xfs_trans.h
index 55819785941cc4..855f43f4dd03ad 100644
--- a/fs/xfs/xfs_trans.h
+++ b/fs/xfs/xfs_trans.h
@@ -15,7 +15,6 @@ struct xfs_efd_log_item;
 struct xfs_efi_log_item;
 struct xfs_inode;
 struct xfs_item_ops;
-struct xfs_log_iovec;
 struct xfs_mount;
 struct xfs_trans;
 struct xfs_trans_res;
diff --git a/include/linux/can/core.h b/include/linux/can/core.h
index 5fb8d0e3f9c1d0..3287232e3cad92 100644
--- a/include/linux/can/core.h
+++ b/include/linux/can/core.h
@@ -58,6 +58,7 @@ extern void can_rx_unregister(struct net *net, struct net_device *dev,
 			      void *data);
 
 extern int can_send(struct sk_buff *skb, int loop);
+void can_set_skb_uid(struct sk_buff *skb);
 void can_sock_destruct(struct sock *sk);
 
 #endif /* !_CAN_CORE_H */
diff --git a/include/linux/can/skb.h b/include/linux/can/skb.h
index 1abc25a8d144e8..869ea574a40a19 100644
--- a/include/linux/can/skb.h
+++ b/include/linux/can/skb.h
@@ -49,13 +49,11 @@ bool can_dropped_invalid_skb(struct net_device *dev, struct sk_buff *skb);
 /**
  * struct can_skb_priv - private additional data inside CAN sk_buffs
  * @ifindex:	ifindex of the first interface the CAN frame appeared on
- * @skbcnt:	atomic counter to have an unique id together with skb pointer
  * @frame_len:	length of CAN frame in data link layer
  * @cf:		align to the following CAN frame at skb->data
  */
 struct can_skb_priv {
 	int ifindex;
-	int skbcnt;
 	unsigned int frame_len;
 	struct can_frame cf[];
 };
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 5b2b19287dc1b8..37c1109bf1543c 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -293,9 +293,11 @@ struct hh_cache {
  * We could use other alignment values, but we must maintain the
  * relationship HH alignment <= LL alignment.
  */
-#define LL_RESERVED_SPACE(dev) \
-	((((dev)->hard_header_len + READ_ONCE((dev)->needed_headroom)) \
+#define LL_RESERVED_SPACE_EX(dev, hlen) \
+	((((hlen) + READ_ONCE((dev)->needed_headroom)) \
 	  & ~(HH_DATA_MOD - 1)) + HH_DATA_MOD)
+#define LL_RESERVED_SPACE(dev) \
+	LL_RESERVED_SPACE_EX(dev, (dev)->hard_header_len)
 #define LL_RESERVED_SPACE_EXTRA(dev,extra) \
 	((((dev)->hard_header_len + READ_ONCE((dev)->needed_headroom) + (extra)) \
 	  & ~(HH_DATA_MOD - 1)) + HH_DATA_MOD)
diff --git a/include/linux/pci-ecam.h b/include/linux/pci-ecam.h
index 6b1301e2498e9e..30e9d883549974 100644
--- a/include/linux/pci-ecam.h
+++ b/include/linux/pci-ecam.h
@@ -77,6 +77,9 @@ void __iomem *pci_ecam_map_bus(struct pci_bus *bus, unsigned int devfn,
 /* default ECAM ops */
 extern const struct pci_ecam_ops pci_generic_ecam_ops;
 
+/* default CAM ops */
+extern const struct pci_ecam_ops pci_generic_cam_ops;
+
 #if defined(CONFIG_ACPI) && defined(CONFIG_PCI_QUIRKS)
 extern const struct pci_ecam_ops pci_32b_ops;	/* 32-bit accesses only */
 extern const struct pci_ecam_ops pci_32b_read_ops; /* 32-bit read only */
diff --git a/include/linux/sched.h b/include/linux/sched.h
index bb29e0e26d37bd..5b415d3b653e38 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1428,6 +1428,14 @@ struct task_struct {
 
 	/* Collect coverage from softirq context: */
 	unsigned int			kcov_softirq;
+
+	/* Temporary storage for preempting remote coverage collection: */
+	unsigned int			kcov_saved_mode;
+	unsigned int			kcov_saved_size;
+	void				*kcov_saved_area;
+	struct kcov			*kcov_saved_kcov;
+	int				kcov_saved_sequence;
+
 #endif
 
 #ifdef CONFIG_MEMCG
diff --git a/include/net/tls.h b/include/net/tls.h
index 037049def8a7f2..b5856a28070daa 100644
--- a/include/net/tls.h
+++ b/include/net/tls.h
@@ -122,7 +122,8 @@ struct tls_strparser {
 	u32 stopped : 1;
 	u32 copy_mode : 1;
 	u32 mixed_decrypted : 1;
-	u32 msg_ready : 1;
+
+	bool msg_ready;
 
 	struct strp_msg stm;
 
diff --git a/kernel/events/core.c b/kernel/events/core.c
index 146b37e97832a9..a0bb33854c4a9b 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -2031,18 +2031,6 @@ list_del_event(struct perf_event *event, struct perf_event_context *ctx)
 	if (event->group_leader == event)
 		del_event_from_groups(event, ctx);
 
-	/*
-	 * If event was in error state, then keep it
-	 * that way, otherwise bogus counts will be
-	 * returned on read(). The only way to get out
-	 * of error state is by explicit re-enabling
-	 * of the event
-	 */
-	if (event->state > PERF_EVENT_STATE_OFF) {
-		perf_cgroup_event_disable(event, ctx);
-		perf_event_set_state(event, PERF_EVENT_STATE_OFF);
-	}
-
 	ctx->generation++;
 }
 
@@ -2059,14 +2047,13 @@ perf_aux_output_match(struct perf_event *event, struct perf_event *aux_event)
 }
 
 static void put_event(struct perf_event *event);
-static void event_sched_out(struct perf_event *event,
-			    struct perf_cpu_context *cpuctx,
-			    struct perf_event_context *ctx);
+static void __event_disable(struct perf_event *event,
+			    struct perf_event_context *ctx,
+			    enum perf_event_state state);
 
 static void perf_put_aux_event(struct perf_event *event)
 {
 	struct perf_event_context *ctx = event->ctx;
-	struct perf_cpu_context *cpuctx = __get_cpu_context(ctx);
 	struct perf_event *iter;
 
 	/*
@@ -2095,8 +2082,7 @@ static void perf_put_aux_event(struct perf_event *event)
 		 * state so that we don't try to schedule it again. Note
 		 * that perf_event_enable() will clear the ERROR status.
 		 */
-		event_sched_out(iter, cpuctx, ctx);
-		perf_event_set_state(event, PERF_EVENT_STATE_ERROR);
+		__event_disable(iter, ctx, PERF_EVENT_STATE_ERROR);
 	}
 }
 
@@ -2150,19 +2136,32 @@ static inline struct list_head *get_event_list(struct perf_event *event)
 	return event->attr.pinned ? &ctx->pinned_active : &ctx->flexible_active;
 }
 
-/*
- * Events that have PERF_EV_CAP_SIBLING require being part of a group and
- * cannot exist on their own, schedule them out and move them into the ERROR
- * state. Also see _perf_event_enable(), it will not be able to recover
- * this ERROR state.
- */
-static inline void perf_remove_sibling_event(struct perf_event *event)
+/* @sibling must already be unlinked from its old leader's sibling_list. */
+static void perf_promote_sibling_to_leader(struct perf_event *sibling,
+					   struct perf_event_context *ctx,
+					   int group_caps)
 {
-	struct perf_event_context *ctx = event->ctx;
-	struct perf_cpu_context *cpuctx = __get_cpu_context(ctx);
+	/*
+	 * Events that have PERF_EV_CAP_SIBLING require being part of
+	 * a group and cannot exist on their own, schedule them out
+	 * and move them into the ERROR state. Also see
+	 * _perf_event_enable(), it will not be able to recover this
+	 * ERROR state.
+	 */
+	if (sibling->event_caps & PERF_EV_CAP_SIBLING)
+		__event_disable(sibling, ctx, PERF_EVENT_STATE_ERROR);
+
+	sibling->group_leader = sibling;
+	sibling->group_caps = group_caps;
+
+	if (sibling->attach_state & PERF_ATTACH_CONTEXT) {
+		add_event_to_groups(sibling, ctx);
+
+		if (sibling->state == PERF_EVENT_STATE_ACTIVE)
+			list_add_tail(&sibling->active_list, get_event_list(sibling));
+	}
 
-	event_sched_out(event, cpuctx, ctx);
-	perf_event_set_state(event, PERF_EVENT_STATE_ERROR);
+	perf_event__header_size(sibling);
 }
 
 static void perf_group_detach(struct perf_event *event)
@@ -2188,8 +2187,9 @@ static void perf_group_detach(struct perf_event *event)
 	 */
 	if (leader != event) {
 		list_del_init(&event->sibling_list);
-		event->group_leader->nr_siblings--;
-		event->group_leader->group_generation++;
+		leader->nr_siblings--;
+		leader->group_generation++;
+		perf_promote_sibling_to_leader(event, ctx, event->event_caps);
 		goto out;
 	}
 
@@ -2199,25 +2199,14 @@ static void perf_group_detach(struct perf_event *event)
 	 * to whatever list we are on.
 	 */
 	list_for_each_entry_safe(sibling, tmp, &event->sibling_list, sibling_list) {
-
-		if (sibling->event_caps & PERF_EV_CAP_SIBLING)
-			perf_remove_sibling_event(sibling);
-
-		sibling->group_leader = sibling;
 		list_del_init(&sibling->sibling_list);
 
 		/* Inherit group flags from the previous leader */
-		sibling->group_caps = event->group_caps;
-
-		if (sibling->attach_state & PERF_ATTACH_CONTEXT) {
-			add_event_to_groups(sibling, event->ctx);
-
-			if (sibling->state == PERF_EVENT_STATE_ACTIVE)
-				list_add_tail(&sibling->active_list, get_event_list(sibling));
-		}
+		perf_promote_sibling_to_leader(sibling, ctx, event->group_caps);
 
 		WARN_ON_ONCE(sibling->ctx != event->ctx);
 	}
+	event->nr_siblings = 0;
 
 out:
 	for_each_sibling_event(tmp, leader)
@@ -2373,6 +2362,7 @@ group_sched_out(struct perf_event *group_event,
 #define DETACH_GROUP	0x01UL
 #define DETACH_CHILD	0x02UL
 #define DETACH_DEAD	0x04UL
+#define DETACH_EXIT	0x08UL
 
 /*
  * Cross CPU call to remove a performance event
@@ -2386,6 +2376,7 @@ __perf_remove_from_context(struct perf_event *event,
 			   struct perf_event_context *ctx,
 			   void *info)
 {
+	enum perf_event_state state = PERF_EVENT_STATE_OFF;
 	unsigned long flags = (unsigned long)info;
 
 	if (ctx->is_active & EVENT_TIME) {
@@ -2397,16 +2388,20 @@ __perf_remove_from_context(struct perf_event *event,
 	 * Ensure event_sched_out() switches to OFF, at the very least
 	 * this avoids raising perf_pending_task() at this time.
 	 */
-	if (flags & DETACH_DEAD)
+	if (flags & DETACH_EXIT)
+		state = PERF_EVENT_STATE_EXIT;
+	if (flags & DETACH_DEAD) {
 		event->pending_disable = 1;
-	event_sched_out(event, cpuctx, ctx);
+		state = PERF_EVENT_STATE_DEAD;
+	}
+
+	__event_disable(event, ctx, state);
+
 	if (flags & DETACH_GROUP)
 		perf_group_detach(event);
 	if (flags & DETACH_CHILD)
 		perf_child_detach(event);
 	list_del_event(event, ctx);
-	if (flags & DETACH_DEAD)
-		event->state = PERF_EVENT_STATE_DEAD;
 
 	if (!ctx->nr_events && ctx->is_active) {
 		if (ctx == &cpuctx->ctx)
@@ -2458,6 +2453,16 @@ static void perf_remove_from_context(struct perf_event *event, unsigned long fla
 	event_function_call(event, __perf_remove_from_context, (void *)flags);
 }
 
+static void __event_disable(struct perf_event *event,
+			    struct perf_event_context *ctx,
+			    enum perf_event_state state)
+{
+	event_sched_out(event, __get_cpu_context(ctx), ctx);
+	if (event->state > PERF_EVENT_STATE_OFF)
+		perf_cgroup_event_disable(event, ctx);
+	perf_event_set_state(event, min(event->state, state));
+}
+
 /*
  * Cross CPU call to disable a performance event
  */
@@ -2474,13 +2479,18 @@ static void __perf_event_disable(struct perf_event *event,
 		update_cgrp_time_from_event(event);
 	}
 
+	/*
+	 * When disabling a group leader, the whole group becomes ineligible
+	 * to run, so schedule out the full group.
+	 */
 	if (event == event->group_leader)
 		group_sched_out(event, cpuctx, ctx);
-	else
-		event_sched_out(event, cpuctx, ctx);
 
-	perf_event_set_state(event, PERF_EVENT_STATE_OFF);
-	perf_cgroup_event_disable(event, ctx);
+	/*
+	 * But only mark the leader OFF; the siblings will remain
+	 * INACTIVE.
+	 */
+	__event_disable(event, ctx, PERF_EVENT_STATE_OFF);
 }
 
 /*
@@ -13077,12 +13087,7 @@ perf_event_exit_event(struct perf_event *event, struct perf_event_context *ctx)
 		mutex_lock(&parent_event->child_mutex);
 	}
 
-	perf_remove_from_context(event, detach_flags);
-
-	raw_spin_lock_irq(&ctx->lock);
-	if (event->state > PERF_EVENT_STATE_EXIT)
-		perf_event_set_state(event, PERF_EVENT_STATE_EXIT);
-	raw_spin_unlock_irq(&ctx->lock);
+	perf_remove_from_context(event, detach_flags | DETACH_EXIT);
 
 	/*
 	 * Child events can be freed.
diff --git a/kernel/kcov.c b/kernel/kcov.c
index cb3ecf07a34bf9..76366a887132ca 100644
--- a/kernel/kcov.c
+++ b/kernel/kcov.c
@@ -85,17 +85,12 @@ struct kcov_remote {
 
 static DEFINE_SPINLOCK(kcov_remote_lock);
 static DEFINE_HASHTABLE(kcov_remote_map, 4);
-static struct list_head kcov_remote_areas = LIST_HEAD_INIT(kcov_remote_areas);
+static struct list_head kcov_remote_areas[2] = {
+	LIST_HEAD_INIT(kcov_remote_areas[0]), LIST_HEAD_INIT(kcov_remote_areas[1])
+};
 
 struct kcov_percpu_data {
-	void			*irq_area;
 	local_lock_t		lock;
-
-	unsigned int		saved_mode;
-	unsigned int		saved_size;
-	void			*saved_area;
-	struct kcov		*saved_kcov;
-	int			saved_sequence;
 };
 
 static DEFINE_PER_CPU(struct kcov_percpu_data, kcov_percpu_data) = {
@@ -131,12 +126,13 @@ static struct kcov_remote *kcov_remote_add(struct kcov *kcov, u64 handle)
 }
 
 /* Must be called with kcov_remote_lock locked. */
-static struct kcov_remote_area *kcov_remote_area_get(unsigned int size)
+static struct kcov_remote_area *kcov_remote_area_get(unsigned int size, bool irq)
 {
 	struct kcov_remote_area *area;
 	struct list_head *pos;
+	struct list_head *list = &kcov_remote_areas[irq];
 
-	list_for_each(pos, &kcov_remote_areas) {
+	list_for_each(pos, list) {
 		area = list_entry(pos, struct kcov_remote_area, list);
 		if (area->size == size) {
 			list_del(&area->list);
@@ -148,11 +144,11 @@ static struct kcov_remote_area *kcov_remote_area_get(unsigned int size)
 
 /* Must be called with kcov_remote_lock locked. */
 static void kcov_remote_area_put(struct kcov_remote_area *area,
-					unsigned int size)
+				 unsigned int size, bool irq)
 {
 	INIT_LIST_HEAD(&area->list);
 	area->size = size;
-	list_add(&area->list, &kcov_remote_areas);
+	list_add(&area->list, &kcov_remote_areas[irq]);
 	/*
 	 * KMSAN doesn't instrument this file, so it may not know area->list
 	 * is initialized. Unpoison it explicitly to avoid reports in
@@ -386,6 +382,12 @@ void kcov_task_init(struct task_struct *t)
 {
 	kcov_task_reset(t);
 	t->kcov_handle = current->kcov_handle;
+	t->kcov_softirq = 0;
+	t->kcov_saved_mode = 0;
+	t->kcov_saved_size = 0;
+	t->kcov_saved_area = NULL;
+	t->kcov_saved_kcov = NULL;
+	t->kcov_saved_sequence = 0;
 }
 
 static void kcov_reset(struct kcov *kcov)
@@ -812,34 +814,31 @@ static inline bool kcov_mode_enabled(unsigned int mode)
 
 static void kcov_remote_softirq_start(struct task_struct *t)
 {
-	struct kcov_percpu_data *data = this_cpu_ptr(&kcov_percpu_data);
 	unsigned int mode;
 
 	mode = READ_ONCE(t->kcov_mode);
 	barrier();
 	if (kcov_mode_enabled(mode)) {
-		data->saved_mode = mode;
-		data->saved_size = t->kcov_size;
-		data->saved_area = t->kcov_area;
-		data->saved_sequence = t->kcov_sequence;
-		data->saved_kcov = t->kcov;
+		t->kcov_saved_mode = mode;
+		t->kcov_saved_size = t->kcov_size;
+		t->kcov_saved_area = t->kcov_area;
+		t->kcov_saved_sequence = t->kcov_sequence;
+		t->kcov_saved_kcov = t->kcov;
 		kcov_stop(t);
 	}
 }
 
 static void kcov_remote_softirq_stop(struct task_struct *t)
 {
-	struct kcov_percpu_data *data = this_cpu_ptr(&kcov_percpu_data);
-
-	if (data->saved_kcov) {
-		kcov_start(t, data->saved_kcov, data->saved_size,
-				data->saved_area, data->saved_mode,
-				data->saved_sequence);
-		data->saved_mode = 0;
-		data->saved_size = 0;
-		data->saved_area = NULL;
-		data->saved_sequence = 0;
-		data->saved_kcov = NULL;
+	if (t->kcov_saved_kcov) {
+		kcov_start(t, t->kcov_saved_kcov, t->kcov_saved_size,
+			   t->kcov_saved_area, t->kcov_saved_mode,
+			   t->kcov_saved_sequence);
+		t->kcov_saved_mode = 0;
+		t->kcov_saved_size = 0;
+		t->kcov_saved_area = NULL;
+		t->kcov_saved_sequence = 0;
+		t->kcov_saved_kcov = NULL;
 	}
 }
 
@@ -900,17 +899,17 @@ void kcov_remote_start(u64 handle)
 	sequence = kcov->sequence;
 	if (in_task()) {
 		size = kcov->remote_size;
-		area = kcov_remote_area_get(size);
+		area = kcov_remote_area_get(size, false);
 	} else {
 		size = CONFIG_KCOV_IRQ_AREA_SIZE;
-		area = this_cpu_ptr(&kcov_percpu_data)->irq_area;
+		area = kcov_remote_area_get(size, true);
 	}
 	spin_unlock(&kcov_remote_lock);
 
-	/* Can only happen when in_task(). */
+	/* Allocate new buffer if we can sleep. */
 	if (!area) {
 		local_unlock_irqrestore(&kcov_percpu_data.lock, flags);
-		area = vmalloc(size * sizeof(unsigned long));
+		area = in_task() ? vmalloc(size * sizeof(unsigned long)) : NULL;
 		if (!area) {
 			kcov_put(kcov);
 			return;
@@ -1043,11 +1042,9 @@ void kcov_remote_stop(void)
 		kcov_move_area(kcov->mode, kcov->area, kcov->size, area);
 	spin_unlock(&kcov->lock);
 
-	if (in_task()) {
-		spin_lock(&kcov_remote_lock);
-		kcov_remote_area_put(area, size);
-		spin_unlock(&kcov_remote_lock);
-	}
+	spin_lock(&kcov_remote_lock);
+	kcov_remote_area_put(area, size, !in_task());
+	spin_unlock(&kcov_remote_lock);
 
 	local_unlock_irqrestore(&kcov_percpu_data.lock, flags);
 
@@ -1067,14 +1064,21 @@ EXPORT_SYMBOL(kcov_common_handle);
 
 static int __init kcov_init(void)
 {
-	int cpu;
+	int cpu = num_possible_cpus();
+
+#ifdef CONFIG_PREEMPT_RT
+	/* Allocate some extra buffers in order to prepare for softirq preemption. */
+	cpu = cpu >= 4 ? cpu * 2 : cpu + 4;
+#endif
+	while (cpu--) {
+		void *area = vmalloc(CONFIG_KCOV_IRQ_AREA_SIZE * sizeof(unsigned long));
+		unsigned long flags;
 
-	for_each_possible_cpu(cpu) {
-		void *area = vmalloc_node(CONFIG_KCOV_IRQ_AREA_SIZE *
-				sizeof(unsigned long), cpu_to_node(cpu));
 		if (!area)
 			return -ENOMEM;
-		per_cpu_ptr(&kcov_percpu_data, cpu)->irq_area = area;
+		spin_lock_irqsave(&kcov_remote_lock, flags);
+		kcov_remote_area_put(area, CONFIG_KCOV_IRQ_AREA_SIZE, true);
+		spin_unlock_irqrestore(&kcov_remote_lock, flags);
 	}
 
 	/*
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 1220e8113dad27..d00c695bf4921a 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -2044,10 +2044,11 @@ config KCOV_INSTRUMENT_ALL
 config KCOV_IRQ_AREA_SIZE
 	hex "Size of interrupt coverage collection area in words"
 	depends on KCOV
+	range 0x80 0x1000000
 	default 0x40000
 	help
-	  KCOV uses preallocated per-cpu areas to collect coverage from
-	  soft interrupts. This specifies the size of those areas in the
+	  KCOV uses preallocated areas to collect coverage from soft
+	  interrupts. This specifies the size of those areas in the
 	  number of unsigned long words.
 
 menuconfig RUNTIME_TESTING_MENU
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index 1ada32d54623fc..dbafb08c58c3c9 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -297,8 +297,10 @@ static u8 hci_cc_reset(struct hci_dev *hdev, void *data, struct sk_buff *skb)
 
 	hdev->ssp_debug_mode = 0;
 
+	hci_dev_lock(hdev);
 	hci_bdaddr_list_clear(&hdev->le_accept_list);
 	hci_bdaddr_list_clear(&hdev->le_resolv_list);
+	hci_dev_unlock(hdev);
 
 	return rp->status;
 }
diff --git a/net/bluetooth/rfcomm/core.c b/net/bluetooth/rfcomm/core.c
index 8a8afcd075ebb7..835993181dd003 100644
--- a/net/bluetooth/rfcomm/core.c
+++ b/net/bluetooth/rfcomm/core.c
@@ -1330,7 +1330,10 @@ static struct rfcomm_session *rfcomm_recv_disc(struct rfcomm_session *s,
 	return s;
 }
 
-void rfcomm_dlc_accept(struct rfcomm_dlc *d)
+/* Must be called with rfcomm_mutex held, so that the session cannot be
+ * unlinked from under us.
+ */
+static void __rfcomm_dlc_accept(struct rfcomm_dlc *d)
 {
 	struct sock *sk = d->session->sock->sk;
 	struct l2cap_conn *conn = l2cap_pi(sk)->chan->conn;
@@ -1352,6 +1355,21 @@ void rfcomm_dlc_accept(struct rfcomm_dlc *d)
 	rfcomm_send_msc(d->session, 1, d->dlci, d->v24_sig);
 }
 
+void rfcomm_dlc_accept(struct rfcomm_dlc *d)
+{
+	rfcomm_lock();
+
+	/* rfcomm_recv_disc() sets the dlc state to BT_CLOSED before calling
+	 * __rfcomm_dlc_close(), so the RFCOMM_DEFER_SETUP handshake there is
+	 * skipped and the session can already be unlinked by the time the
+	 * deferred accept runs from rfcomm_sock_recvmsg().
+	 */
+	if (d->session)
+		__rfcomm_dlc_accept(d);
+
+	rfcomm_unlock();
+}
+
 static void rfcomm_check_accept(struct rfcomm_dlc *d)
 {
 	if (rfcomm_check_security(d)) {
@@ -1364,7 +1382,7 @@ static void rfcomm_check_accept(struct rfcomm_dlc *d)
 			d->state_change(d, 0);
 			rfcomm_dlc_unlock(d);
 		} else
-			rfcomm_dlc_accept(d);
+			__rfcomm_dlc_accept(d);
 	} else {
 		set_bit(RFCOMM_AUTH_PENDING, &d->flags);
 		rfcomm_dlc_set_timer(d, RFCOMM_AUTH_TIMEOUT);
@@ -1949,7 +1967,7 @@ static void rfcomm_process_dlcs(struct rfcomm_session *s)
 					d->state_change(d, 0);
 					rfcomm_dlc_unlock(d);
 				} else
-					rfcomm_dlc_accept(d);
+					__rfcomm_dlc_accept(d);
 			}
 			continue;
 		} else if (test_and_clear_bit(RFCOMM_AUTH_REJECT, &d->flags)) {
diff --git a/net/can/af_can.c b/net/can/af_can.c
index 851d2c90901c54..e7bafb2e013a6b 100644
--- a/net/can/af_can.c
+++ b/net/can/af_can.c
@@ -640,6 +640,16 @@ static int can_rcv_filter(struct can_dev_rcv_lists *dev_rcv_lists, struct sk_buf
 	return matches;
 }
 
+void can_set_skb_uid(struct sk_buff *skb)
+{
+	/* create non-zero unique skb identifier together with *skb */
+	while (!(skb->hash))
+		skb->hash = atomic_inc_return(&skbcounter);
+
+	skb->sw_hash = 1;
+}
+EXPORT_SYMBOL(can_set_skb_uid);
+
 static void can_receive(struct sk_buff *skb, struct net_device *dev)
 {
 	struct can_dev_rcv_lists *dev_rcv_lists;
@@ -651,9 +661,7 @@ static void can_receive(struct sk_buff *skb, struct net_device *dev)
 	atomic_long_inc(&pkg_stats->rx_frames);
 	atomic_long_inc(&pkg_stats->rx_frames_delta);
 
-	/* create non-zero unique skb identifier together with *skb */
-	while (!(can_skb_prv(skb)->skbcnt))
-		can_skb_prv(skb)->skbcnt = atomic_inc_return(&skbcounter);
+	can_set_skb_uid(skb);
 
 	rcu_read_lock();
 
diff --git a/net/can/bcm.c b/net/can/bcm.c
index 16640650c43384..35f0037ac48b61 100644
--- a/net/can/bcm.c
+++ b/net/can/bcm.c
@@ -338,7 +338,6 @@ static void bcm_can_tx(struct bcm_op *op, struct canfd_frame *cf)
 
 	can_skb_reserve(skb);
 	can_skb_prv(skb)->ifindex = dev->ifindex;
-	can_skb_prv(skb)->skbcnt = 0;
 
 	skb_put_data(skb, cf, op->cfsiz);
 
@@ -1582,7 +1581,6 @@ static int bcm_tx_send(struct msghdr *msg, int ifindex, struct sock *sk,
 	}
 
 	can_skb_prv(skb)->ifindex = dev->ifindex;
-	can_skb_prv(skb)->skbcnt = 0;
 	skb->dev = dev;
 	can_skb_set_owner(skb, sk);
 	err = can_send(skb, 1); /* send with loopback */
diff --git a/net/can/isotp.c b/net/can/isotp.c
index 645e0bd16782d6..3a2eca45ef4371 100644
--- a/net/can/isotp.c
+++ b/net/can/isotp.c
@@ -114,6 +114,15 @@ MODULE_ALIAS("can-proto-6");
 #define ISOTP_FC_TIMEOUT 1	/* 1 sec */
 #define ISOTP_ECHO_TIMEOUT 2	/* 2 secs */
 
+/* so->tx_result[so->tx_gen % ISOTP_TX_RESULT_SLOTS] holds the packed value
+ * (err << ISOTP_TX_RESULT_GEN_BITS | gen) for each tx generation slot, so it
+ * can be handled with a single READ_ONCE()/WRITE_ONCE() access.
+ */
+#define ISOTP_TX_RESULT_SLOTS 4
+#define ISOTP_TX_RESULT_GEN_BITS 24
+#define ISOTP_TX_RESULT_GEN_MASK ((1U << ISOTP_TX_RESULT_GEN_BITS) - 1)
+#define ISOTP_TX_RESULT_ERR_MASK 0xFF
+
 enum {
 	ISOTP_IDLE = 0,
 	ISOTP_WAIT_FIRST_FC,
@@ -150,7 +159,8 @@ struct isotp_sock {
 	u32 force_tx_stmin;
 	u32 force_rx_stmin;
 	u32 cfecho; /* consecutive frame echo tag */
-	u32 tx_gen; /* generation, bumped per new tx transfer */
+	u32 tx_gen; /* transfer generation, increased per new tx transfer */
+	u32 tx_result[ISOTP_TX_RESULT_SLOTS]; /* per-generation result slots */
 	struct tpcon rx, tx;
 	struct list_head notifier;
 	wait_queue_head_t wait;
@@ -161,6 +171,65 @@ static LIST_HEAD(isotp_notifier_list);
 static DEFINE_SPINLOCK(isotp_notifier_lock);
 static struct isotp_sock *isotp_busy_notifier;
 
+/* increase (24 bit) tx generation value */
+static u32 isotp_inc_tx_gen(u32 gen)
+{
+	return (gen + 1) & ISOTP_TX_RESULT_GEN_MASK;
+}
+
+/* store 8 bit error and 24 bit tx generation values in packed u32 element */
+static u32 isotp_pack_tx_result(u32 gen, int err)
+{
+	return gen | ((u32)err << ISOTP_TX_RESULT_GEN_BITS);
+}
+
+/* get the 24 bit tx generation value from the tx result */
+static u32 isotp_get_tx_gen(u32 gen_err)
+{
+	return gen_err & ISOTP_TX_RESULT_GEN_MASK;
+}
+
+/* get the 8 bit error value from the tx result */
+static u32 isotp_get_tx_err(u32 gen_err)
+{
+	return (gen_err >> ISOTP_TX_RESULT_GEN_BITS) & ISOTP_TX_RESULT_ERR_MASK;
+}
+
+/* store transfer result in per-generation%4 so->tx_result[] slot */
+static void isotp_set_tx_result(struct isotp_sock *so, u32 gen, int err)
+{
+	WRITE_ONCE(so->tx_result[gen % ISOTP_TX_RESULT_SLOTS],
+		   isotp_pack_tx_result(gen, err));
+}
+
+/* fetch the result recorded for 'gen', as a (negative) errno (0 for success) */
+static int isotp_get_tx_result(struct isotp_sock *so, u32 gen)
+{
+	u32 result = READ_ONCE(so->tx_result[gen % ISOTP_TX_RESULT_SLOTS]);
+
+	if (isotp_get_tx_gen(result) != gen) {
+		pr_notice_once("can-isotp: tx_result[] slot reused before read\n");
+
+		/* report failure rather than risk a false success */
+		return -ECOMM;
+	}
+
+	return -(isotp_get_tx_err(result));
+}
+
+/* true if done, shut down or superseded ('gen' is no longer the active
+ * transfer). Reads tx.state first (acquire) so tx_gen/tx_result reads
+ * below see at least what that state write published (common sequence).
+ */
+static bool isotp_tx_gen_done(struct isotp_sock *so, u32 gen)
+{
+	/* read tx.state first for the common sequence */
+	u32 state = smp_load_acquire(&so->tx.state);
+
+	return state == ISOTP_IDLE || state == ISOTP_SHUTDOWN ||
+	       READ_ONCE(so->tx_gen) != gen;
+}
+
 static inline struct isotp_sock *isotp_sk(const struct sock *sk)
 {
 	return (struct isotp_sock *)sk;
@@ -183,7 +252,7 @@ static enum hrtimer_restart isotp_rx_timer_handler(struct hrtimer *hrtimer)
 					     rxtimer);
 	struct sock *sk = &so->sk;
 
-	if (so->rx.state == ISOTP_WAIT_DATA) {
+	if (READ_ONCE(so->rx.state) == ISOTP_WAIT_DATA) {
 		/* we did not get new data frames in time */
 
 		/* report 'connection timed out' */
@@ -192,7 +261,7 @@ static enum hrtimer_restart isotp_rx_timer_handler(struct hrtimer *hrtimer)
 			sk_error_report(sk);
 
 		/* reset rx state */
-		so->rx.state = ISOTP_IDLE;
+		WRITE_ONCE(so->rx.state, ISOTP_IDLE);
 	}
 
 	return HRTIMER_NORESTART;
@@ -218,7 +287,6 @@ static int isotp_send_fc(struct sock *sk, int ae, u8 flowstatus)
 
 	can_skb_reserve(nskb);
 	can_skb_prv(nskb)->ifindex = dev->ifindex;
-	can_skb_prv(nskb)->skbcnt = 0;
 
 	nskb->dev = dev;
 	can_skb_set_owner(nskb, sk);
@@ -350,20 +418,19 @@ static void isotp_send_cframe(struct isotp_sock *so);
 static int isotp_rcv_fc(struct isotp_sock *so, struct canfd_frame *cf, int ae)
 {
 	struct sock *sk = &so->sk;
+	int tx_err = EBADMSG; /* default for unknown FC status */
 
-	if (so->tx.state != ISOTP_WAIT_FC &&
-	    so->tx.state != ISOTP_WAIT_FIRST_FC)
+	if (READ_ONCE(so->tx.state) != ISOTP_WAIT_FC &&
+	    READ_ONCE(so->tx.state) != ISOTP_WAIT_FIRST_FC)
 		return 0;
 
 	hrtimer_cancel(&so->txtimer);
 
 	/* isotp_tx_timeout() may have given up on this job while
-	 * hrtimer_cancel() above waited for it to finish; so->rx_lock
-	 * (held by our caller isotp_rcv()) rules out a concurrent claim,
-	 * so a plain recheck is enough here.
+	 * hrtimer_cancel() above waited for it to finish => recheck
 	 */
-	if (so->tx.state != ISOTP_WAIT_FC &&
-	    so->tx.state != ISOTP_WAIT_FIRST_FC)
+	if (READ_ONCE(so->tx.state) != ISOTP_WAIT_FC &&
+	    READ_ONCE(so->tx.state) != ISOTP_WAIT_FIRST_FC)
 		return 1;
 
 	if ((cf->len < ae + FC_CONTENT_SZ) ||
@@ -374,13 +441,15 @@ static int isotp_rcv_fc(struct isotp_sock *so, struct canfd_frame *cf, int ae)
 		if (!sock_flag(sk, SOCK_DEAD))
 			sk_error_report(sk);
 
-		so->tx.state = ISOTP_IDLE;
+		isotp_set_tx_result(so, so->tx_gen, EBADMSG);
+		/* set to IDLE after publishing tx_result */
+		smp_store_release(&so->tx.state, ISOTP_IDLE);
 		wake_up_interruptible(&so->wait);
 		return 1;
 	}
 
 	/* get communication parameters only from the first FC frame */
-	if (so->tx.state == ISOTP_WAIT_FIRST_FC) {
+	if (READ_ONCE(so->tx.state) == ISOTP_WAIT_FIRST_FC) {
 		so->txfc.bs = cf->data[ae + 1];
 		so->txfc.stmin = cf->data[ae + 2];
 
@@ -403,13 +472,13 @@ static int isotp_rcv_fc(struct isotp_sock *so, struct canfd_frame *cf, int ae)
 			so->tx_gap = ktime_add_ns(so->tx_gap,
 						  (so->txfc.stmin - 0xF0)
 						  * 100000);
-		so->tx.state = ISOTP_WAIT_FC;
+		WRITE_ONCE(so->tx.state, ISOTP_WAIT_FC);
 	}
 
 	switch (cf->data[ae] & 0x0F) {
 	case ISOTP_FC_CTS:
 		so->tx.bs = 0;
-		so->tx.state = ISOTP_SENDING;
+		WRITE_ONCE(so->tx.state, ISOTP_SENDING);
 		/* send CF frame and enable echo timeout handling */
 		hrtimer_start(&so->echotimer, ktime_set(ISOTP_ECHO_TIMEOUT, 0),
 			      HRTIMER_MODE_REL_SOFT);
@@ -424,14 +493,19 @@ static int isotp_rcv_fc(struct isotp_sock *so, struct canfd_frame *cf, int ae)
 
 	case ISOTP_FC_OVFLW:
 		/* overflow on receiver side - report 'message too long' */
-		sk->sk_err = EMSGSIZE;
-		if (!sock_flag(sk, SOCK_DEAD))
-			sk_error_report(sk);
+		tx_err = EMSGSIZE;
 		fallthrough;
 
 	default:
-		/* stop this tx job */
-		so->tx.state = ISOTP_IDLE;
+		/* reserved/unknown flow status (tx_err defaults to EBADMSG) */
+
+		sk->sk_err = tx_err;
+		if (!sock_flag(sk, SOCK_DEAD))
+			sk_error_report(sk);
+
+		isotp_set_tx_result(so, so->tx_gen, tx_err);
+		/* set to IDLE after publishing tx_result */
+		smp_store_release(&so->tx.state, ISOTP_IDLE);
 		wake_up_interruptible(&so->wait);
 	}
 	return 0;
@@ -444,7 +518,7 @@ static int isotp_rcv_sf(struct sock *sk, struct canfd_frame *cf, int pcilen,
 	struct sk_buff *nskb;
 
 	hrtimer_cancel(&so->rxtimer);
-	so->rx.state = ISOTP_IDLE;
+	WRITE_ONCE(so->rx.state, ISOTP_IDLE);
 
 	if (!len || len > cf->len - pcilen)
 		return 1;
@@ -478,7 +552,7 @@ static int isotp_rcv_ff(struct sock *sk, struct canfd_frame *cf, int ae)
 	int ff_pci_sz;
 
 	hrtimer_cancel(&so->rxtimer);
-	so->rx.state = ISOTP_IDLE;
+	WRITE_ONCE(so->rx.state, ISOTP_IDLE);
 
 	/* get the used sender LL_DL from the (first) CAN frame data length */
 	so->rx.ll_dl = padlen(cf->len);
@@ -522,7 +596,7 @@ static int isotp_rcv_ff(struct sock *sk, struct canfd_frame *cf, int ae)
 
 	/* initial setup for this pdu reception */
 	so->rx.sn = 1;
-	so->rx.state = ISOTP_WAIT_DATA;
+	WRITE_ONCE(so->rx.state, ISOTP_WAIT_DATA);
 
 	/* no creation of flow control frames */
 	if (so->opt.flags & CAN_ISOTP_LISTEN_MODE)
@@ -540,7 +614,7 @@ static int isotp_rcv_cf(struct sock *sk, struct canfd_frame *cf, int ae,
 	struct sk_buff *nskb;
 	int i;
 
-	if (so->rx.state != ISOTP_WAIT_DATA)
+	if (READ_ONCE(so->rx.state) != ISOTP_WAIT_DATA)
 		return 0;
 
 	/* drop if timestamp gap is less than force_rx_stmin nano secs */
@@ -555,11 +629,9 @@ static int isotp_rcv_cf(struct sock *sk, struct canfd_frame *cf, int ae,
 	hrtimer_cancel(&so->rxtimer);
 
 	/* isotp_rx_timer_handler() may have raced us for so->rx.state
-	 * while hrtimer_cancel() above waited for it to finish, already
-	 * reporting ETIMEDOUT and resetting the reception; don't process
-	 * this CF into a reassembly that has already been given up on.
+	 * while hrtimer_cancel() above waited for it to finish => recheck
 	 */
-	if (so->rx.state != ISOTP_WAIT_DATA)
+	if (READ_ONCE(so->rx.state) != ISOTP_WAIT_DATA)
 		return 1;
 
 	/* CFs are never longer than the FF */
@@ -580,7 +652,7 @@ static int isotp_rcv_cf(struct sock *sk, struct canfd_frame *cf, int ae,
 			sk_error_report(sk);
 
 		/* reset rx state */
-		so->rx.state = ISOTP_IDLE;
+		WRITE_ONCE(so->rx.state, ISOTP_IDLE);
 		return 1;
 	}
 	so->rx.sn++;
@@ -594,7 +666,7 @@ static int isotp_rcv_cf(struct sock *sk, struct canfd_frame *cf, int ae,
 
 	if (so->rx.idx >= so->rx.len) {
 		/* we are done */
-		so->rx.state = ISOTP_IDLE;
+		WRITE_ONCE(so->rx.state, ISOTP_IDLE);
 
 		if ((so->opt.flags & ISOTP_CHECK_PADDING) &&
 		    check_pad(so, cf, i + 1, so->opt.rxpad_content)) {
@@ -665,8 +737,10 @@ static void isotp_rcv(struct sk_buff *skb, void *data)
 
 	if (so->opt.flags & CAN_ISOTP_HALF_DUPLEX) {
 		/* check rx/tx path half duplex expectations */
-		if ((so->tx.state != ISOTP_IDLE && n_pci_type != N_PCI_FC) ||
-		    (so->rx.state != ISOTP_IDLE && n_pci_type == N_PCI_FC))
+		if ((READ_ONCE(so->tx.state) != ISOTP_IDLE &&
+		     n_pci_type != N_PCI_FC) ||
+		    (READ_ONCE(so->rx.state) != ISOTP_IDLE &&
+		     n_pci_type == N_PCI_FC))
 			goto out_unlock;
 	}
 
@@ -760,6 +834,7 @@ static void isotp_send_cframe(struct isotp_sock *so)
 	struct canfd_frame *cf;
 	int can_send_ret;
 	int ae = (so->opt.flags & CAN_ISOTP_EXTEND_ADDR) ? 1 : 0;
+	u32 old_cfecho;
 
 	dev = dev_get_by_index(sock_net(sk), so->ifindex);
 	if (!dev)
@@ -773,7 +848,9 @@ static void isotp_send_cframe(struct isotp_sock *so)
 
 	can_skb_reserve(skb);
 	can_skb_prv(skb)->ifindex = dev->ifindex;
-	can_skb_prv(skb)->skbcnt = 0;
+
+	/* set uid in tx skb to identify CF echo frames */
+	can_set_skb_uid(skb);
 
 	cf = (struct canfd_frame *)skb->data;
 	skb_put_zero(skb, so->ll.mtu);
@@ -791,12 +868,15 @@ static void isotp_send_cframe(struct isotp_sock *so)
 	skb->dev = dev;
 	can_skb_set_owner(skb, sk);
 
-	/* cfecho should have been zero'ed by init/isotp_rcv_echo() */
-	if (so->cfecho)
-		pr_notice_once("can-isotp: cfecho is %08X != 0\n", so->cfecho);
+	/* zero'ed by init/isotp_rcv_echo(); reached lock-free via
+	 * isotp_txfr_timer_handler() too, so use READ_ONCE()/WRITE_ONCE()
+	 */
+	old_cfecho = READ_ONCE(so->cfecho);
+	if (old_cfecho)
+		pr_notice_once("can-isotp: cfecho is %08X != 0\n", old_cfecho);
 
 	/* set consecutive frame echo tag */
-	so->cfecho = *(u32 *)cf->data;
+	WRITE_ONCE(so->cfecho, skb->hash);
 
 	/* send frame with local echo enabled */
 	can_send_ret = can_send(skb, 1);
@@ -848,7 +928,6 @@ static void isotp_rcv_echo(struct sk_buff *skb, void *data)
 {
 	struct sock *sk = (struct sock *)data;
 	struct isotp_sock *so = isotp_sk(sk);
-	struct canfd_frame *cf = (struct canfd_frame *)skb->data;
 
 	/* only handle my own local echo CF/SF skb's (no FF!) */
 	if (skb->sk != sk)
@@ -860,32 +939,35 @@ static void isotp_rcv_echo(struct sk_buff *skb, void *data)
 	spin_lock(&so->rx_lock);
 
 	/* so->cfecho may since belong to a new transfer; recheck under lock */
-	if (so->cfecho != *(u32 *)cf->data)
+	if (READ_ONCE(so->cfecho) != skb->hash)
 		goto out_unlock;
 
 	/* cancel local echo timeout */
 	hrtimer_cancel(&so->echotimer);
 
 	/* local echo skb with consecutive frame has been consumed */
-	so->cfecho = 0;
+	WRITE_ONCE(so->cfecho, 0);
 
 	/* claiming a transfer also takes so->rx_lock, so a plain recheck
 	 * is enough: so->tx.state can't have flipped to ISOTP_SENDING for
 	 * a new claim while we're still in here
 	 */
-	if (so->tx.state != ISOTP_SENDING)
+	if (READ_ONCE(so->tx.state) != ISOTP_SENDING)
 		goto out_unlock;
 
 	if (so->tx.idx >= so->tx.len) {
 		/* we are done */
-		so->tx.state = ISOTP_IDLE;
+
+		isotp_set_tx_result(so, so->tx_gen, 0);
+		/* set to IDLE after publishing tx_result */
+		smp_store_release(&so->tx.state, ISOTP_IDLE);
 		wake_up_interruptible(&so->wait);
 		goto out_unlock;
 	}
 
 	if (so->txfc.bs && so->tx.bs >= so->txfc.bs) {
 		/* stop and wait for FC with timeout */
-		so->tx.state = ISOTP_WAIT_FC;
+		WRITE_ONCE(so->tx.state, ISOTP_WAIT_FC);
 		hrtimer_start(&so->txtimer, ktime_set(ISOTP_FC_TIMEOUT, 0),
 			      HRTIMER_MODE_REL_SOFT);
 		goto out_unlock;
@@ -907,16 +989,20 @@ out_unlock:
 	spin_unlock(&so->rx_lock);
 }
 
-/* shared by so->txtimer's and so->echotimer's callbacks. Both timers get
- * cancelled under so->rx_lock elsewhere, so this must stay lock-free to
- * avoid deadlocking with that; uses so->tx_gen instead to avoid tainting
- * a new transfer with an error from the one that just timed out.
+/* isotp_tx_timeout: we did not get any flow control or echo frame in time
+ *
+ * Shared by so->txtimer's and so->echotimer's callbacks. Both timers get
+ * cancelled under so->rx_lock elsewhere, so this must stay lock-free.
+ *
+ * tx.state is acquired before tx_gen. Common sequence in isotp_tx_gen_done().
+ * cmpxchg() only orders itself, not the two preceding loads.
  */
 static enum hrtimer_restart isotp_tx_timeout(struct isotp_sock *so)
 {
 	struct sock *sk = &so->sk;
+	/* read tx.state first for the common sequence */
+	u32 old_state = smp_load_acquire(&so->tx.state);
 	u32 gen = READ_ONCE(so->tx_gen);
-	u32 old_state = READ_ONCE(so->tx.state);
 
 	/* don't handle timeouts in IDLE or SHUTDOWN state */
 	if (old_state == ISOTP_IDLE || old_state == ISOTP_SHUTDOWN)
@@ -926,14 +1012,14 @@ static enum hrtimer_restart isotp_tx_timeout(struct isotp_sock *so)
 	if (cmpxchg(&so->tx.state, old_state, ISOTP_IDLE) != old_state)
 		return HRTIMER_NORESTART;
 
-	/* we did not get any flow control or echo frame in time */
+	/* detected timeout: report 'communication error on send' */
 
-	if (READ_ONCE(so->tx_gen) == gen) {
-		/* report 'communication error on send' */
-		sk->sk_err = ECOMM;
-		if (!sock_flag(sk, SOCK_DEAD))
-			sk_error_report(sk);
-	}
+	/* a stale read of this slot by a waiter still falls back to ECOMM */
+	isotp_set_tx_result(so, gen, ECOMM);
+
+	sk->sk_err = ECOMM;
+	if (!sock_flag(sk, SOCK_DEAD))
+		sk_error_report(sk);
 
 	wake_up_interruptible(&so->wait);
 
@@ -968,7 +1054,7 @@ static enum hrtimer_restart isotp_txfr_timer_handler(struct hrtimer *hrtimer)
 		      HRTIMER_MODE_REL_SOFT);
 
 	/* cfecho should be consumed by isotp_rcv_echo() here */
-	if (so->tx.state == ISOTP_SENDING && !so->cfecho)
+	if (READ_ONCE(so->tx.state) == ISOTP_SENDING && !READ_ONCE(so->cfecho))
 		isotp_send_cframe(so);
 
 	return HRTIMER_NORESTART;
@@ -986,10 +1072,12 @@ static int isotp_sendmsg(struct socket *sock, struct msghdr *msg, size_t size)
 	s64 hrtimer_sec = ISOTP_ECHO_TIMEOUT;
 	struct hrtimer *tx_hrt = &so->echotimer;
 	u32 new_state = ISOTP_SENDING;
+	u32 my_gen;
+	u32 old_cfecho;
 	int off;
 	int err;
 
-	if (!so->bound || so->tx.state == ISOTP_SHUTDOWN)
+	if (!so->bound || READ_ONCE(so->tx.state) == ISOTP_SHUTDOWN)
 		return -EADDRNOTAVAIL;
 
 	/* claim the socket under so->rx_lock: this serializes the claim
@@ -1006,29 +1094,33 @@ static int isotp_sendmsg(struct socket *sock, struct msghdr *msg, size_t size)
 		if (msg->msg_flags & MSG_DONTWAIT)
 			return -EAGAIN;
 
-		if (so->tx.state == ISOTP_SHUTDOWN)
+		if (READ_ONCE(so->tx.state) == ISOTP_SHUTDOWN)
 			return -EADDRNOTAVAIL;
 
 		/* wait for complete transmission of current pdu */
 		err = wait_event_interruptible(so->wait,
-					       so->tx.state == ISOTP_IDLE);
+					       READ_ONCE(so->tx.state) == ISOTP_IDLE ||
+					       READ_ONCE(so->tx.state) == ISOTP_SHUTDOWN);
 		if (err)
 			return err;
 	}
 
-	/* new transfer: bump so->tx_gen and drain the old one's timers,
-	 * still under the so->rx_lock we just claimed the socket with
-	 */
-	WRITE_ONCE(so->tx.state, ISOTP_SENDING);
-	WRITE_ONCE(so->tx_gen, READ_ONCE(so->tx_gen) + 1);
+	/* txfrtimer's callback re-arms echotimer lock-free: drain it first */
+	hrtimer_cancel(&so->txfrtimer);
 	hrtimer_cancel(&so->txtimer);
 	hrtimer_cancel(&so->echotimer);
-	hrtimer_cancel(&so->txfrtimer);
-	so->cfecho = 0;
+
+	/* new transfer: increment so->tx_gen and set tx.state after barrier */
+	my_gen = isotp_inc_tx_gen(READ_ONCE(so->tx_gen));
+	isotp_set_tx_result(so, my_gen, ECOMM); /* prevent stale slot matching */
+	WRITE_ONCE(so->tx_gen, my_gen);
+	smp_wmb(); /* see smp_load_acquire() in isotp_tx_[timeout|gen_done] */
+	WRITE_ONCE(so->tx.state, ISOTP_SENDING);
+	WRITE_ONCE(so->cfecho, 0);
 	spin_unlock_bh(&so->rx_lock);
 
 	/* so->bound is only checked once above - a wakeup may have
-	 * unbound/rebound the socket meanwhile, so re-validate it
+	 * unbound/rebound the socket meanwhile => recheck
 	 */
 	if (!so->bound) {
 		err = -EADDRNOTAVAIL;
@@ -1069,7 +1161,9 @@ static int isotp_sendmsg(struct socket *sock, struct msghdr *msg, size_t size)
 
 	can_skb_reserve(skb);
 	can_skb_prv(skb)->ifindex = dev->ifindex;
-	can_skb_prv(skb)->skbcnt = 0;
+
+	/* set uid in tx skb to identify CF echo frames */
+	can_set_skb_uid(skb);
 
 	so->tx.len = size;
 	so->tx.idx = 0;
@@ -1078,8 +1172,9 @@ static int isotp_sendmsg(struct socket *sock, struct msghdr *msg, size_t size)
 	skb_put_zero(skb, so->ll.mtu);
 
 	/* cfecho should have been zero'ed by init / former isotp_rcv_echo() */
-	if (so->cfecho)
-		pr_notice_once("can-isotp: uninit cfecho %08X\n", so->cfecho);
+	old_cfecho = READ_ONCE(so->cfecho);
+	if (old_cfecho)
+		pr_notice_once("can-isotp: uninit cfecho %08X\n", old_cfecho);
 
 	/* check for single frame transmission depending on TX_DL */
 	if (size <= so->tx.ll_dl - SF_PCI_SZ4 - ae - off) {
@@ -1107,7 +1202,7 @@ static int isotp_sendmsg(struct socket *sock, struct msghdr *msg, size_t size)
 			cf->data[ae] |= size;
 
 		/* set CF echo tag for isotp_rcv_echo() (SF-mode) */
-		so->cfecho = *(u32 *)cf->data;
+		WRITE_ONCE(so->cfecho, skb->hash);
 	} else {
 		/* send first frame */
 
@@ -1124,7 +1219,7 @@ static int isotp_sendmsg(struct socket *sock, struct msghdr *msg, size_t size)
 			so->txfc.bs = 0;
 
 			/* set CF echo tag for isotp_rcv_echo() (CF-mode) */
-			so->cfecho = *(u32 *)cf->data;
+			WRITE_ONCE(so->cfecho, skb->hash);
 		} else {
 			/* standard flow control check */
 			new_state = ISOTP_WAIT_FIRST_FC;
@@ -1134,12 +1229,12 @@ static int isotp_sendmsg(struct socket *sock, struct msghdr *msg, size_t size)
 			tx_hrt = &so->txtimer;
 
 			/* no CF echo tag for isotp_rcv_echo() (FF-mode) */
-			so->cfecho = 0;
+			WRITE_ONCE(so->cfecho, 0);
 		}
 	}
 
 	spin_lock_bh(&so->rx_lock);
-	if (so->tx.state == ISOTP_SHUTDOWN) {
+	if (READ_ONCE(so->tx.state) == ISOTP_SHUTDOWN) {
 		/* isotp_release() has since taken over and already drained
 		 * our timers - don't send into a socket that's going away
 		 */
@@ -1150,7 +1245,7 @@ static int isotp_sendmsg(struct socket *sock, struct msghdr *msg, size_t size)
 		return -EADDRNOTAVAIL;
 	}
 	/* WAIT_FIRST_FC for standard FF, else stays ISOTP_SENDING */
-	so->tx.state = new_state;
+	WRITE_ONCE(so->tx.state, new_state);
 	hrtimer_start(tx_hrt, ktime_set(hrtimer_sec, 0),
 		      HRTIMER_MODE_REL_SOFT);
 	spin_unlock_bh(&so->rx_lock);
@@ -1167,20 +1262,49 @@ static int isotp_sendmsg(struct socket *sock, struct msghdr *msg, size_t size)
 			       __func__, ERR_PTR(err));
 
 		spin_lock_bh(&so->rx_lock);
+
+		/* new transfer already claimed by a concurrent completion,
+		 * timeout or sendmsg() while we were stuck in can_send()?
+		 */
+		if (READ_ONCE(so->tx_gen) != my_gen) {
+			/* don't touch timers and state of the new transfer */
+			spin_unlock_bh(&so->rx_lock);
+			return err;
+		}
+
 		/* no transmission -> no timeout monitoring */
 		hrtimer_cancel(tx_hrt);
 		goto err_out_drop_locked;
 	}
 
 	if (wait_tx_done) {
-		/* wait for complete transmission of current pdu */
-		err = wait_event_interruptible(so->wait, so->tx.state == ISOTP_IDLE);
+		/* wake up for:
+		 * - concurrent sendmsg() claiming a new transfer
+		 * - complete transmission of current PDU
+		 * - shutdown state change in isotp_release()
+		 * isotp_tx_gen_done() uses common tx.state/tx_gen read sequence
+		 */
+		err = wait_event_interruptible(so->wait,
+					       isotp_tx_gen_done(so, my_gen));
 		if (err)
 			goto err_event_drop;
 
-		err = sock_error(sk);
-		if (err)
-			return err;
+		/* still our claim, but isotp_release() force-shut it down */
+		if (smp_load_acquire(&so->tx.state) == ISOTP_SHUTDOWN &&
+		    READ_ONCE(so->tx_gen) == my_gen) {
+			err = -EADDRNOTAVAIL;
+			goto err_event_drop;
+		}
+
+		/* own completion, or tx_gen moved on - either way this is
+		 * what isotp_get_tx_result() recorded for my_gen
+		 */
+		err = isotp_get_tx_result(so, my_gen);
+
+		/* drain to avoid stale error for a later poll()/SO_ERROR */
+		sock_error(sk);
+
+		return err ? err : size;
 	}
 
 	return size;
@@ -1190,15 +1314,26 @@ err_out_drop:
 	spin_lock_bh(&so->rx_lock);
 	goto err_out_drop_locked;
 err_event_drop:
-	/* interrupted waiting on our own transfer - drain its timers */
+	/* interrupted or shut down while waiting on our own transfer */
 	spin_lock_bh(&so->rx_lock);
+
+	/* new transfer already started by concurrent sendmsg()? */
+	if (READ_ONCE(so->tx_gen) != my_gen) {
+		/* don't touch timers and states of the new transfer */
+		spin_unlock_bh(&so->rx_lock);
+		return err;
+	}
+
 	hrtimer_cancel(&so->txfrtimer);
 	hrtimer_cancel(&so->txtimer);
 	hrtimer_cancel(&so->echotimer);
 err_out_drop_locked:
 	/* release the claim; so->rx_lock still held from above */
-	so->cfecho = 0;
-	so->tx.state = ISOTP_IDLE;
+	WRITE_ONCE(so->cfecho, 0);
+
+	/* only claim to IDLE if isotp_release() has not taken over */
+	if (READ_ONCE(so->tx.state) != ISOTP_SHUTDOWN)
+		WRITE_ONCE(so->tx.state, ISOTP_IDLE);
 	spin_unlock_bh(&so->rx_lock);
 	wake_up_interruptible(&so->wait);
 
@@ -1264,8 +1399,9 @@ static int isotp_release(struct socket *sock)
 	/* best-effort: wait for a running pdu to finish, but don't block on
 	 * it forever - give up after the first signal
 	 */
-	while (so->tx.state != ISOTP_IDLE &&
-	       wait_event_interruptible(so->wait, so->tx.state == ISOTP_IDLE) == 0)
+	while (READ_ONCE(so->tx.state) != ISOTP_IDLE &&
+	       wait_event_interruptible(so->wait,
+					READ_ONCE(so->tx.state) == ISOTP_IDLE) == 0)
 		;
 
 	/* claim the socket under so->rx_lock like sendmsg() does, so its
@@ -1273,9 +1409,12 @@ static int isotp_release(struct socket *sock)
 	 * unconditionally, even when a signal cut the wait above short
 	 */
 	spin_lock_bh(&so->rx_lock);
-	so->tx.state = ISOTP_SHUTDOWN;
+	WRITE_ONCE(so->tx.state, ISOTP_SHUTDOWN);
 	spin_unlock_bh(&so->rx_lock);
-	so->rx.state = ISOTP_IDLE;
+	WRITE_ONCE(so->rx.state, ISOTP_IDLE);
+
+	/* forced SHUTDOWN may have skipped IDLE (gave up on a signal) */
+	wake_up_interruptible(&so->wait);
 
 	spin_lock(&isotp_notifier_lock);
 	while (isotp_busy_notifier == so) {
@@ -1390,7 +1529,8 @@ static int isotp_bind(struct socket *sock, struct sockaddr *uaddr, int len)
 	 * with so->bound in the same lock_sock() section above, so there is
 	 * no window in which a concurrent isotp_notify() could be missed.
 	 */
-	if (so->tx.state != ISOTP_IDLE || so->rx.state != ISOTP_IDLE) {
+	if (READ_ONCE(so->tx.state) != ISOTP_IDLE ||
+	    READ_ONCE(so->rx.state) != ISOTP_IDLE) {
 		err = -EAGAIN;
 		goto out;
 	}
@@ -1424,7 +1564,7 @@ static int isotp_bind(struct socket *sock, struct sockaddr *uaddr, int len)
 				isotp_rcv, sk, "isotp", sk);
 
 	/* no consecutive frame echo skb in flight */
-	so->cfecho = 0;
+	WRITE_ONCE(so->cfecho, 0);
 
 	/* register for echo skb's */
 	can_rx_register(net, dev, tx_id, SINGLE_MASK(tx_id),
@@ -1767,7 +1907,7 @@ static __poll_t isotp_poll(struct file *file, struct socket *sock, poll_table *w
 	poll_wait(file, &so->wait, wait);
 
 	/* Check for false positives due to TX state */
-	if ((mask & EPOLLWRNORM) && (so->tx.state != ISOTP_IDLE))
+	if ((mask & EPOLLWRNORM) && (READ_ONCE(so->tx.state) != ISOTP_IDLE))
 		mask &= ~(EPOLLOUT | EPOLLWRNORM);
 
 	return mask;
diff --git a/net/can/j1939/socket.c b/net/can/j1939/socket.c
index 502975fd5f97ee..c8173cd34433c4 100644
--- a/net/can/j1939/socket.c
+++ b/net/can/j1939/socket.c
@@ -889,7 +889,6 @@ static struct sk_buff *j1939_sk_alloc_skb(struct net_device *ndev,
 
 	can_skb_reserve(skb);
 	can_skb_prv(skb)->ifindex = ndev->ifindex;
-	can_skb_prv(skb)->skbcnt = 0;
 	skb_reserve(skb, offsetof(struct can_frame, data));
 
 	ret = memcpy_from_msg(skb_put(skb, size), msg, size);
diff --git a/net/can/j1939/transport.c b/net/can/j1939/transport.c
index b11febe2b5fbba..a1a28240fec283 100644
--- a/net/can/j1939/transport.c
+++ b/net/can/j1939/transport.c
@@ -613,7 +613,6 @@ sk_buff *j1939_tp_tx_dat_new(struct j1939_priv *priv,
 	skb->dev = priv->ndev;
 	can_skb_reserve(skb);
 	can_skb_prv(skb)->ifindex = priv->ndev->ifindex;
-	can_skb_prv(skb)->skbcnt = 0;
 	/* reserve CAN header */
 	skb_reserve(skb, offsetof(struct can_frame, data));
 
@@ -1553,7 +1552,6 @@ j1939_session *j1939_session_fresh_new(struct j1939_priv *priv,
 	skb->dev = priv->ndev;
 	can_skb_reserve(skb);
 	can_skb_prv(skb)->ifindex = priv->ndev->ifindex;
-	can_skb_prv(skb)->skbcnt = 0;
 	skcb = j1939_skb_to_cb(skb);
 	memcpy(skcb, rel_skcb, sizeof(*skcb));
 
diff --git a/net/can/raw.c b/net/can/raw.c
index bcd6061f43d87b..c54d3b8ee2152f 100644
--- a/net/can/raw.c
+++ b/net/can/raw.c
@@ -75,8 +75,8 @@ MODULE_ALIAS("can-proto-1");
  */
 
 struct uniqframe {
-	int skbcnt;
 	const struct sk_buff *skb;
+	u32 hash;
 	unsigned int join_rx_count;
 };
 
@@ -140,7 +140,7 @@ static void raw_rcv(struct sk_buff *oskb, void *data)
 
 	/* eliminate multiple filter matches for the same skb */
 	if (this_cpu_ptr(ro->uniq)->skb == oskb &&
-	    this_cpu_ptr(ro->uniq)->skbcnt == can_skb_prv(oskb)->skbcnt) {
+	    this_cpu_ptr(ro->uniq)->hash == oskb->hash) {
 		if (!ro->join_filters)
 			return;
 
@@ -150,7 +150,7 @@ static void raw_rcv(struct sk_buff *oskb, void *data)
 			return;
 	} else {
 		this_cpu_ptr(ro->uniq)->skb = oskb;
-		this_cpu_ptr(ro->uniq)->skbcnt = can_skb_prv(oskb)->skbcnt;
+		this_cpu_ptr(ro->uniq)->hash = oskb->hash;
 		this_cpu_ptr(ro->uniq)->join_rx_count = 1;
 		/* drop first frame to check all enabled filters? */
 		if (ro->join_filters && ro->count > 1)
@@ -870,7 +870,6 @@ static int raw_sendmsg(struct socket *sock, struct msghdr *msg, size_t size)
 
 	can_skb_reserve(skb);
 	can_skb_prv(skb)->ifindex = dev->ifindex;
-	can_skb_prv(skb)->skbcnt = 0;
 
 	/* fill the skb before testing for valid CAN frames */
 	err = memcpy_from_msg(skb_put(skb, size), msg, size);
diff --git a/net/ceph/osd_client.c b/net/ceph/osd_client.c
index a4ec9f61ba045d..76194a9e59f083 100644
--- a/net/ceph/osd_client.c
+++ b/net/ceph/osd_client.c
@@ -5001,7 +5001,7 @@ static int decode_watchers(void **p, void *end,
 	if (ret)
 		return ret;
 
-	*num_watchers = ceph_decode_32(p);
+	ceph_decode_32_safe(p, end, *num_watchers, bad);
 	*watchers = kcalloc(*num_watchers, sizeof(**watchers), GFP_NOIO);
 	if (!*watchers)
 		return -ENOMEM;
@@ -5015,6 +5015,9 @@ static int decode_watchers(void **p, void *end,
 	}
 
 	return 0;
+
+bad:
+	return -EINVAL;
 }
 
 /*
diff --git a/net/core/gro.c b/net/core/gro.c
index 855ffaaea54f4d..a5ce969c9f71cc 100644
--- a/net/core/gro.c
+++ b/net/core/gro.c
@@ -182,8 +182,9 @@ int skb_gro_receive(struct sk_buff *p, struct sk_buff *skb)
 
 	if (unlikely(p->len + len >= GRO_LEGACY_MAX_SIZE)) {
 		if (p->protocol != htons(ETH_P_IPV6) ||
-		    skb_headroom(p) < sizeof(struct hop_jumbo_hdr) ||
+		    p->mac_header < sizeof(struct hop_jumbo_hdr) ||
 		    ipv6_hdr(p)->nexthdr != IPPROTO_TCP ||
+		    NAPI_GRO_CB(skb)->encap_mark ||
 		    p->encapsulation)
 			return -E2BIG;
 	}
diff --git a/net/ipv4/inet_fragment.c b/net/ipv4/inet_fragment.c
index 834cdc57755f7f..0cfad7ab9f96d3 100644
--- a/net/ipv4/inet_fragment.c
+++ b/net/ipv4/inet_fragment.c
@@ -339,16 +339,18 @@ static struct inet_frag_queue *inet_frag_create(struct fqdir *fqdir,
 		*prev = ERR_PTR(-ENOMEM);
 		return NULL;
 	}
-	mod_timer(&q->timer, jiffies + fqdir->timeout);
 
+	spin_lock_bh(&q->lock);
 	*prev = rhashtable_lookup_get_insert_key(&fqdir->rhashtable, &q->key,
 						 &q->node, f->rhash_params);
 	if (*prev) {
 		q->flags |= INET_FRAG_COMPLETE;
-		inet_frag_kill(q);
+		spin_unlock_bh(&q->lock);
 		inet_frag_destroy(q);
 		return NULL;
 	}
+	mod_timer(&q->timer, jiffies + fqdir->timeout);
+	spin_unlock_bh(&q->lock);
 	return q;
 }
 
diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c
index 778214137e4a29..6fd7995ff8dd19 100644
--- a/net/ipv4/ip_output.c
+++ b/net/ipv4/ip_output.c
@@ -795,6 +795,10 @@ int ip_do_fragment(struct net *net, struct sock *sk, struct sk_buff *skb,
 	 */
 
 	hlen = iph->ihl * 4;
+	if (mtu < hlen + 8) {
+		err = -EMSGSIZE;
+		goto fail;
+	}
 	mtu = mtu - hlen;	/* Size of data space */
 	IPCB(skb)->flags |= IPSKB_FRAG_COMPLETE;
 	ll_rs = LL_RESERVED_SPACE(rt->dst.dev);
diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
index 93e55ab7e0f6d1..7ad60793c853c3 100644
--- a/net/ipv6/ip6_output.c
+++ b/net/ipv6/ip6_output.c
@@ -118,6 +118,8 @@ static int ip6_finish_output2(struct net *net, struct sock *sk, struct sk_buff *
 
 		if (res != LWTUNNEL_XMIT_CONTINUE)
 			return res;
+		hdr = ipv6_hdr(skb);
+		daddr = &hdr->daddr;
 	}
 
 	rcu_read_lock();
diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c
index 585a9135cf267c..7d703a66c0a322 100644
--- a/net/ipv6/ndisc.c
+++ b/net/ipv6/ndisc.c
@@ -1671,7 +1671,7 @@ static void ndisc_fill_redirect_hdr_option(struct sk_buff *skb,
 void ndisc_send_redirect(struct sk_buff *skb, const struct in6_addr *target)
 {
 	struct net_device *dev = skb->dev;
-	struct net *net = dev_net(dev);
+	struct net *net = dev_net_rcu(dev);
 	struct sock *sk = net->ipv6.ndisc_sk;
 	int optlen = 0;
 	struct inet_peer *peer;
@@ -1686,8 +1686,8 @@ void ndisc_send_redirect(struct sk_buff *skb, const struct in6_addr *target)
 	   ops_data_buf[NDISC_OPS_REDIRECT_DATA_SPACE], *ops_data = NULL;
 	bool ret;
 
-	if (netif_is_l3_master(skb->dev)) {
-		dev = dev_get_by_index_rcu(dev_net(skb->dev), IPCB(skb)->iif);
+	if (netif_is_l3_master(dev)) {
+		dev = dev_get_by_index_rcu(net, IPCB(skb)->iif);
 		if (!dev)
 			return;
 	}
@@ -1725,12 +1725,10 @@ void ndisc_send_redirect(struct sk_buff *skb, const struct in6_addr *target)
 		goto release;
 	}
 
-	rcu_read_lock();
 	peer = inet_getpeer_v6(net->ipv6.peers, &ipv6_hdr(skb)->saddr);
 	if (!peer)
 		goto release;
 	ret = inet_peer_xrlim_allow(peer, 1*HZ);
-	rcu_read_unlock();
 
 	if (!ret)
 		goto release;
diff --git a/net/mptcp/pm_netlink.c b/net/mptcp/pm_netlink.c
index 9a931c4a9cdc27..74e211e8adad48 100644
--- a/net/mptcp/pm_netlink.c
+++ b/net/mptcp/pm_netlink.c
@@ -28,6 +28,7 @@ struct mptcp_pm_add_entry {
 	struct timer_list	add_timer;
 	struct mptcp_sock	*sock;
 	u8			retrans_times;
+	bool			timer_done;
 	struct rcu_head		rcu;
 };
 
@@ -305,25 +306,23 @@ static void mptcp_pm_add_timer(struct timer_list *timer)
 	struct mptcp_pm_add_entry *entry = from_timer(entry, timer, add_timer);
 	struct mptcp_sock *msk = entry->sock;
 	struct sock *sk = (struct sock *)msk;
-	unsigned int timeout;
+	unsigned int timeout = 0;
+	bool retransmit;
 
 	pr_debug("msk=%p\n", msk);
 
-	if (!msk)
-		return;
-
-	if (inet_sk_state_load(sk) == TCP_CLOSE)
-		return;
-
 	bh_lock_sock(sk);
+	if (unlikely(inet_sk_state_load(sk) == TCP_CLOSE))
+		goto out;
+
 	if (sock_owned_by_user(sk)) {
 		/* Try again later. */
-		sk_reset_timer(sk, timer, jiffies + HZ / 20);
+		timeout = HZ / 20;
 		goto out;
 	}
 
 	if (mptcp_pm_should_add_signal_addr(msk)) {
-		sk_reset_timer(sk, timer, jiffies + HZ);
+		timeout = HZ;
 		goto out;
 	}
 
@@ -346,18 +345,23 @@ static void mptcp_pm_add_timer(struct timer_list *timer)
 		entry->retrans_times++;
 	}
 
-	if (entry->retrans_times < ADD_ADDR_RETRANS_MAX)
-		sk_reset_timer(sk, timer,
-			       jiffies + timeout);
+	retransmit = entry->retrans_times < ADD_ADDR_RETRANS_MAX;
+	if (!retransmit)
+		timeout = 0;
 
 	spin_unlock_bh(&msk->pm.lock);
 
-	if (entry->retrans_times == ADD_ADDR_RETRANS_MAX)
+	if (!retransmit)
 		mptcp_pm_subflow_established(msk);
 
 out:
+	if (timeout)
+		sk_reset_timer(sk, timer, jiffies + timeout);
+	else
+		/* if sock_put calls sk_free: avoid waiting for this timer */
+		entry->timer_done = true;
 	bh_unlock_sock(sk);
-	__sock_put(sk);
+	sock_put(sk);
 }
 
 struct mptcp_pm_add_entry *
@@ -425,6 +429,7 @@ bool mptcp_pm_alloc_anno_list(struct mptcp_sock *msk,
 
 	timer_setup(&add_entry->add_timer, mptcp_pm_add_timer, 0);
 reset_timer:
+	add_entry->timer_done = false;
 	timeout = mptcp_get_add_addr_timeout(net);
 	if (timeout)
 		sk_reset_timer(sk, &add_entry->add_timer, jiffies + timeout);
@@ -445,7 +450,8 @@ void mptcp_pm_free_anno_list(struct mptcp_sock *msk)
 	spin_unlock_bh(&msk->pm.lock);
 
 	list_for_each_entry_safe(entry, tmp, &free_list, list) {
-		sk_stop_timer_sync(sk, &entry->add_timer);
+		if (!entry->timer_done)
+			sk_stop_timer_sync(sk, &entry->add_timer);
 		kfree_rcu(entry, rcu);
 	}
 }
diff --git a/net/nfc/digital_technology.c b/net/nfc/digital_technology.c
index e29dd10f280ed7..3c2d225d694a59 100644
--- a/net/nfc/digital_technology.c
+++ b/net/nfc/digital_technology.c
@@ -778,6 +778,8 @@ static void digital_in_recv_sensf_res(struct nfc_digital_dev *ddev, void *arg,
 
 	sensf_res = (struct digital_sensf_res *)resp->data;
 
+	resp->len = min_t(unsigned int, resp->len, NFC_SENSF_RES_MAXSIZE);
+
 	memcpy(target.sensf_res, sensf_res, resp->len);
 	target.sensf_res_len = resp->len;
 
diff --git a/net/nfc/llcp_commands.c b/net/nfc/llcp_commands.c
index b652323bc2c12b..a93bf0b43d5047 100644
--- a/net/nfc/llcp_commands.c
+++ b/net/nfc/llcp_commands.c
@@ -193,7 +193,8 @@ int nfc_llcp_parse_gb_tlv(struct nfc_llcp_local *local,
 			  const u8 *tlv_array, u16 tlv_array_len)
 {
 	const u8 *tlv = tlv_array;
-	u8 type, length, offset = 0;
+	u8 type, length;
+	u16 offset = 0;
 
 	pr_debug("TLV array length %d\n", tlv_array_len);
 
@@ -201,9 +202,15 @@ int nfc_llcp_parse_gb_tlv(struct nfc_llcp_local *local,
 		return -ENODEV;
 
 	while (offset < tlv_array_len) {
+		if (offset + 2 > tlv_array_len)
+			return -EINVAL;
+
 		type = tlv[0];
 		length = tlv[1];
 
+		if (offset + 2 + length > tlv_array_len)
+			return -EINVAL;
+
 		pr_debug("type 0x%x length %d\n", type, length);
 
 		switch (type) {
@@ -243,7 +250,8 @@ int nfc_llcp_parse_connection_tlv(struct nfc_llcp_sock *sock,
 				  const u8 *tlv_array, u16 tlv_array_len)
 {
 	const u8 *tlv = tlv_array;
-	u8 type, length, offset = 0;
+	u8 type, length;
+	u16 offset = 0;
 
 	pr_debug("TLV array length %d\n", tlv_array_len);
 
@@ -251,9 +259,15 @@ int nfc_llcp_parse_connection_tlv(struct nfc_llcp_sock *sock,
 		return -ENOTCONN;
 
 	while (offset < tlv_array_len) {
+		if (offset + 2 > tlv_array_len)
+			return -EINVAL;
+
 		type = tlv[0];
 		length = tlv[1];
 
+		if (offset + 2 + length > tlv_array_len)
+			return -EINVAL;
+
 		pr_debug("type 0x%x length %d\n", type, length);
 
 		switch (type) {
diff --git a/net/nfc/llcp_core.c b/net/nfc/llcp_core.c
index 62b0f2d6686eb8..db050f4faa5b6a 100644
--- a/net/nfc/llcp_core.c
+++ b/net/nfc/llcp_core.c
@@ -847,13 +847,16 @@ static struct nfc_llcp_sock *nfc_llcp_sock_get_sn(struct nfc_llcp_local *local,
 static const u8 *nfc_llcp_connect_sn(const struct sk_buff *skb, size_t *sn_len)
 {
 	u8 type, length;
-	const u8 *tlv = &skb->data[2];
-	size_t tlv_array_len = skb->len - LLCP_HEADER_SIZE, offset = 0;
+	const u8 *tlv = &skb->data[LLCP_HEADER_SIZE];
+	const u8 *tlv_end = skb_tail_pointer(skb);
 
-	while (offset < tlv_array_len) {
+	while (tlv + 2 < tlv_end) {
 		type = tlv[0];
 		length = tlv[1];
 
+		if (tlv + 2 + length > tlv_end)
+			break;
+
 		pr_debug("type 0x%x length %d\n", type, length);
 
 		if (type == LLCP_TLV_SN) {
@@ -861,7 +864,6 @@ static const u8 *nfc_llcp_connect_sn(const struct sk_buff *skb, size_t *sn_len)
 			return &tlv[2];
 		}
 
-		offset += length + 2;
 		tlv += length + 2;
 	}
 
@@ -1550,6 +1552,11 @@ static void nfc_llcp_rx_work(struct work_struct *work)
 
 static void __nfc_llcp_recv(struct nfc_llcp_local *local, struct sk_buff *skb)
 {
+	if (!pskb_may_pull(skb, LLCP_HEADER_SIZE)) {
+		kfree_skb(skb);
+		return;
+	}
+
 	local->rx_pending = skb;
 	del_timer(&local->link_timer);
 	schedule_work(&local->rx_work);
diff --git a/net/nfc/nci/ntf.c b/net/nfc/nci/ntf.c
index df0f1200082cfd..f97a38b0fcabf8 100644
--- a/net/nfc/nci/ntf.c
+++ b/net/nfc/nci/ntf.c
@@ -440,7 +440,7 @@ void nci_clear_target_list(struct nci_dev *ndev)
 static int nci_rf_discover_ntf_packet(struct nci_dev *ndev,
 				      const struct sk_buff *skb)
 {
-	struct nci_rf_discover_ntf ntf;
+	struct nci_rf_discover_ntf ntf = {};
 	const __u8 *data;
 	bool add_target = true;
 
@@ -603,6 +603,12 @@ static void nci_target_auto_activated(struct nci_dev *ndev,
 	struct nfc_target *target;
 	int rc;
 
+	/* This is a new target, check if we've enough room */
+	if (ndev->n_targets == NCI_MAX_DISCOVERED_TARGETS) {
+		pr_debug("not enough room, ignoring new target...\n");
+		return;
+	}
+
 	target = &ndev->targets[ndev->n_targets];
 
 	rc = nci_add_new_protocol(ndev, target, ntf->rf_protocol,
@@ -666,7 +672,7 @@ static int nci_rf_intf_activated_ntf_packet(struct nci_dev *ndev,
 					    const struct sk_buff *skb)
 {
 	struct nci_conn_info *conn_info;
-	struct nci_rf_intf_activated_ntf ntf;
+	struct nci_rf_intf_activated_ntf ntf = {};
 	const __u8 *data;
 	int err = NCI_STATUS_OK;
 
diff --git a/net/nfc/nci/rsp.c b/net/nfc/nci/rsp.c
index b911ab78bed9aa..fccd7ce69bb7b2 100644
--- a/net/nfc/nci/rsp.c
+++ b/net/nfc/nci/rsp.c
@@ -336,6 +336,7 @@ static void nci_core_conn_close_rsp_packet(struct nci_dev *ndev,
 			list_del(&conn_info->list);
 			if (conn_info == ndev->rf_conn_info)
 				ndev->rf_conn_info = NULL;
+			devm_kfree(&ndev->nfc_dev->dev, conn_info->dest_params);
 			devm_kfree(&ndev->nfc_dev->dev, conn_info);
 		}
 	}
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index b3d7518c47e364..538fc4075292d9 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -1358,22 +1358,35 @@ static int __packet_rcv_has_room(const struct packet_sock *po,
 
 static int packet_rcv_has_room(struct packet_sock *po, struct sk_buff *skb)
 {
-	int pressure, ret;
+	bool pressure;
+	int ret;
 
 	ret = __packet_rcv_has_room(po, skb);
 	pressure = ret != ROOM_NORMAL;
 
-	if (READ_ONCE(po->pressure) != pressure)
-		WRITE_ONCE(po->pressure, pressure);
+	if (packet_sock_flag(po, PACKET_SOCK_PRESSURE) != pressure)
+		packet_sock_flag_set(po, PACKET_SOCK_PRESSURE, pressure);
 
 	return ret;
 }
 
-static void packet_rcv_try_clear_pressure(struct packet_sock *po)
+static void __packet_rcv_try_clear_pressure(struct packet_sock *po)
 {
-	if (READ_ONCE(po->pressure) &&
+	if (packet_sock_flag(po, PACKET_SOCK_PRESSURE) &&
 	    __packet_rcv_has_room(po, NULL) == ROOM_NORMAL)
-		WRITE_ONCE(po->pressure,  0);
+		packet_sock_flag_set(po, PACKET_SOCK_PRESSURE, false);
+}
+
+static void packet_rcv_try_clear_pressure(struct packet_sock *po)
+{
+	struct sock *sk = &po->sk;
+
+	if (!packet_sock_flag(po, PACKET_SOCK_PRESSURE))
+		return;
+
+	spin_lock_bh(&sk->sk_receive_queue.lock);
+	__packet_rcv_try_clear_pressure(po);
+	spin_unlock_bh(&sk->sk_receive_queue.lock);
 }
 
 static void packet_sock_destruct(struct sock *sk)
@@ -1462,7 +1475,8 @@ static unsigned int fanout_demux_rollover(struct packet_fanout *f,
 	i = j = min_t(int, po->rollover->sock, num - 1);
 	do {
 		po_next = pkt_sk(rcu_dereference(f->arr[i]));
-		if (po_next != po_skip && !READ_ONCE(po_next->pressure) &&
+		if (po_next != po_skip &&
+		    !packet_sock_flag(po_next, PACKET_SOCK_PRESSURE) &&
 		    packet_rcv_has_room(po_next, skb) == ROOM_NORMAL) {
 			if (i != j)
 				po->rollover->sock = i;
@@ -2008,8 +2022,9 @@ static int packet_sendmsg_spkt(struct socket *sock, struct msghdr *msg,
 	struct net_device *dev;
 	struct sockcm_cookie sockc;
 	__be16 proto = 0;
-	int err;
+	int hard_header_len;
 	int extra_len = 0;
+	int err;
 
 	/*
 	 *	Get and verify the address.
@@ -2052,14 +2067,18 @@ retry:
 		extra_len = 4; /* We're doing our own CRC */
 	}
 
+	/* Keep the allocation-time header length across retry. */
+	if (!skb)
+		hard_header_len = READ_ONCE(dev->hard_header_len);
+
 	err = -EMSGSIZE;
-	if (len > dev->mtu + dev->hard_header_len + VLAN_HLEN + extra_len)
+	if (len > dev->mtu + hard_header_len + VLAN_HLEN + extra_len)
 		goto out_unlock;
 
 	if (!skb) {
-		size_t reserved = LL_RESERVED_SPACE(dev);
+		size_t reserved = LL_RESERVED_SPACE_EX(dev, hard_header_len);
 		int tlen = dev->needed_tailroom;
-		unsigned int hhlen = dev->header_ops ? dev->hard_header_len : 0;
+		unsigned int hhlen = dev->header_ops ? hard_header_len : 0;
 
 		rcu_read_unlock();
 		skb = sock_wmalloc(sk, len + reserved + tlen, 0, GFP_KERNEL);
@@ -2089,7 +2108,7 @@ retry:
 		err = -EINVAL;
 		goto out_unlock;
 	}
-	if (len > (dev->mtu + dev->hard_header_len + extra_len) &&
+	if (len > (dev->mtu + hard_header_len + extra_len) &&
 	    !packet_extra_vlan_len_allowed(dev, skb)) {
 		err = -EMSGSIZE;
 		goto out_unlock;
@@ -2619,6 +2638,7 @@ static int packet_snd_vnet_parse(struct msghdr *msg, size_t *len,
 static int tpacket_fill_skb(struct packet_sock *po, struct sk_buff *skb,
 		void *frame, struct net_device *dev, void *data, int tp_len,
 		__be16 proto, unsigned char *addr, int hlen, int copylen,
+		int hard_header_len,
 		const struct sockcm_cookie *sockc)
 {
 	union tpacket_uhdr ph;
@@ -2650,8 +2670,8 @@ static int tpacket_fill_skb(struct packet_sock *po, struct sk_buff *skb,
 	} else if (copylen) {
 		int hdrlen = min_t(int, copylen, tp_len);
 
-		skb_push(skb, dev->hard_header_len);
-		skb_put(skb, copylen - dev->hard_header_len);
+		skb_push(skb, hard_header_len);
+		skb_put(skb, copylen - hard_header_len);
 		err = skb_store_bits(skb, 0, data, hdrlen);
 		if (unlikely(err))
 			return err;
@@ -2784,7 +2804,7 @@ static int tpacket_snd(struct packet_sock *po, struct msghdr *msg)
 	void *data;
 	int len_sum = 0;
 	int status = TP_STATUS_AVAILABLE;
-	int hlen, tlen, copylen = 0;
+	int hard_header_len, hlen, tlen, copylen = 0;
 	long timeo;
 
 	mutex_lock(&po->pg_vec_lock);
@@ -2831,8 +2851,9 @@ static int tpacket_snd(struct packet_sock *po, struct msghdr *msg)
 			goto out_put;
 	}
 
+	hard_header_len = READ_ONCE(dev->hard_header_len);
 	if (po->sk.sk_socket->type == SOCK_RAW)
-		reserve = dev->hard_header_len;
+		reserve = hard_header_len;
 	size_max = po->tx_ring.frame_size
 		- (po->tp_hdrlen - sizeof(struct sockaddr_ll));
 
@@ -2870,7 +2891,7 @@ static int tpacket_snd(struct packet_sock *po, struct msghdr *msg)
 			goto tpacket_error;
 
 		status = TP_STATUS_SEND_REQUEST;
-		hlen = LL_RESERVED_SPACE(dev);
+		hlen = LL_RESERVED_SPACE_EX(dev, hard_header_len);
 		tlen = dev->needed_tailroom;
 		if (packet_sock_flag(po, PACKET_SOCK_HAS_VNET_HDR)) {
 			data += sizeof(vnet_hdr);
@@ -2888,10 +2909,10 @@ static int tpacket_snd(struct packet_sock *po, struct msghdr *msg)
 						    vnet_hdr.hdr_len);
 			has_vnet_hdr = true;
 		}
-		copylen = max_t(int, copylen, dev->hard_header_len);
+		copylen = max_t(int, copylen, hard_header_len);
 		skb = sock_alloc_send_skb(&po->sk,
 				hlen + tlen + sizeof(struct sockaddr_ll) +
-				(copylen - dev->hard_header_len),
+				(copylen - hard_header_len),
 				!need_wait, &err);
 
 		if (unlikely(skb == NULL)) {
@@ -2901,7 +2922,8 @@ static int tpacket_snd(struct packet_sock *po, struct msghdr *msg)
 			goto out_status;
 		}
 		tp_len = tpacket_fill_skb(po, skb, ph, dev, data, tp_len, proto,
-					  addr, hlen, copylen, &sockc);
+					  addr, hlen, copylen, hard_header_len,
+					  &sockc);
 		if (likely(tp_len >= 0) &&
 		    tp_len > dev->mtu + reserve &&
 		    !packet_sock_flag(po, PACKET_SOCK_HAS_VNET_HDR) &&
@@ -3008,7 +3030,7 @@ static int packet_snd(struct socket *sock, struct msghdr *msg, size_t len)
 	int offset = 0;
 	struct packet_sock *po = pkt_sk(sk);
 	bool has_vnet_hdr = false;
-	int hlen, tlen, linear;
+	int hard_header_len, hlen, tlen, linear;
 	int extra_len = 0;
 
 	/*
@@ -3049,8 +3071,9 @@ static int packet_snd(struct socket *sock, struct msghdr *msg, size_t len)
 			goto out_unlock;
 	}
 
+	hard_header_len = READ_ONCE(dev->hard_header_len);
 	if (sock->type == SOCK_RAW)
-		reserve = dev->hard_header_len;
+		reserve = hard_header_len;
 	if (packet_sock_flag(po, PACKET_SOCK_HAS_VNET_HDR)) {
 		err = packet_snd_vnet_parse(msg, &len, &vnet_hdr);
 		if (err)
@@ -3072,10 +3095,10 @@ static int packet_snd(struct socket *sock, struct msghdr *msg, size_t len)
 		goto out_unlock;
 
 	err = -ENOBUFS;
-	hlen = LL_RESERVED_SPACE(dev);
+	hlen = LL_RESERVED_SPACE_EX(dev, hard_header_len);
 	tlen = dev->needed_tailroom;
 	linear = __virtio16_to_cpu(vio_le(), vnet_hdr.hdr_len);
-	linear = max(linear, min_t(int, len, dev->hard_header_len));
+	linear = max(linear, min_t(int, len, hard_header_len));
 	skb = packet_alloc_skb(sk, hlen + tlen, hlen, len, linear,
 			       msg->msg_flags & MSG_DONTWAIT, &err);
 	if (skb == NULL)
@@ -3091,7 +3114,7 @@ static int packet_snd(struct socket *sock, struct msghdr *msg, size_t len)
 	} else if (reserve) {
 		skb_reserve(skb, -reserve);
 		if (len < reserve + sizeof(struct ipv6hdr) &&
-		    dev->min_header_len != dev->hard_header_len)
+		    dev->min_header_len != hard_header_len)
 			skb_reset_network_header(skb);
 	}
 
@@ -4331,7 +4354,7 @@ static __poll_t packet_poll(struct file *file, struct socket *sock,
 			TP_STATUS_KERNEL))
 			mask |= EPOLLIN | EPOLLRDNORM;
 	}
-	packet_rcv_try_clear_pressure(po);
+	__packet_rcv_try_clear_pressure(po);
 	spin_unlock_bh(&sk->sk_receive_queue.lock);
 	spin_lock_bh(&sk->sk_write_queue.lock);
 	if (po->tx_ring.pg_vec) {
@@ -4571,14 +4594,14 @@ static int packet_set_ring(struct sock *sk, union tpacket_req_u *req_u,
 		rb->frame_max = (req->tp_frame_nr - 1);
 		rb->head = 0;
 		rb->frame_size = req->tp_frame_size;
+		po->prot_hook.func = (po->rx_ring.pg_vec) ?
+						tpacket_rcv : packet_rcv;
 		spin_unlock_bh(&rb_queue->lock);
 
 		swap(rb->pg_vec_order, order);
 		swap(rb->pg_vec_len, req->tp_block_nr);
 
 		rb->pg_vec_pages = req->tp_block_size/PAGE_SIZE;
-		po->prot_hook.func = (po->rx_ring.pg_vec) ?
-						tpacket_rcv : packet_rcv;
 		skb_queue_purge(rb_queue);
 		if (atomic_long_read(&po->mapped))
 			pr_err("packet_mmap: vma is busy: %ld\n",
diff --git a/net/packet/internal.h b/net/packet/internal.h
index 9e50bf06131f29..9097fb5d7f2e29 100644
--- a/net/packet/internal.h
+++ b/net/packet/internal.h
@@ -117,7 +117,6 @@ struct packet_sock {
 	spinlock_t		bind_lock;
 	struct mutex		pg_vec_lock;
 	unsigned long		flags;
-	int			pressure;
 	int			ifindex;	/* bound device		*/
 	__be16			num;
 	struct packet_rollover	*rollover;
@@ -146,6 +145,7 @@ enum packet_sock_flags {
 	PACKET_SOCK_TP_LOSS,
 	PACKET_SOCK_HAS_VNET_HDR,
 	PACKET_SOCK_RUNNING,
+	PACKET_SOCK_PRESSURE,
 };
 
 static inline void packet_sock_flag_set(struct packet_sock *po,
diff --git a/net/tls/tls.h b/net/tls/tls.h
index 8304afbe09e961..c1be900190376b 100644
--- a/net/tls/tls.h
+++ b/net/tls/tls.h
@@ -147,7 +147,7 @@ void tls_strp_msg_done(struct tls_strparser *strp);
 int tls_rx_msg_size(struct tls_strparser *strp, struct sk_buff *skb);
 void tls_rx_msg_ready(struct tls_strparser *strp);
 
-void tls_strp_msg_load(struct tls_strparser *strp, bool force_refresh);
+bool tls_strp_msg_load(struct tls_strparser *strp, bool force_refresh);
 int tls_strp_msg_cow(struct tls_sw_context_rx *ctx);
 struct sk_buff *tls_strp_msg_detach(struct tls_sw_context_rx *ctx);
 int tls_strp_msg_hold(struct tls_strparser *strp, struct sk_buff_head *dst);
@@ -167,7 +167,7 @@ static inline struct sk_buff *tls_strp_msg(struct tls_sw_context_rx *ctx)
 
 static inline bool tls_strp_msg_ready(struct tls_sw_context_rx *ctx)
 {
-	return ctx->strp.msg_ready;
+	return READ_ONCE(ctx->strp.msg_ready);
 }
 
 static inline bool tls_strp_msg_mixed_decrypted(struct tls_sw_context_rx *ctx)
diff --git a/net/tls/tls_strp.c b/net/tls/tls_strp.c
index 850146ed2d5860..be8a799609f7f0 100644
--- a/net/tls/tls_strp.c
+++ b/net/tls/tls_strp.c
@@ -366,7 +366,7 @@ static int tls_strp_copyin(read_descriptor_t *desc, struct sk_buff *in_skb,
 	if (strp->stm.full_len && strp->stm.full_len == skb->len) {
 		desc->count = 0;
 
-		strp->msg_ready = 1;
+		WRITE_ONCE(strp->msg_ready, 1);
 		tls_rx_msg_ready(strp);
 	}
 
@@ -481,7 +481,7 @@ static void tls_strp_load_anchor_with_queue(struct tls_strparser *strp, int len)
 	strp->stm.offset = offset;
 }
 
-void tls_strp_msg_load(struct tls_strparser *strp, bool force_refresh)
+bool tls_strp_msg_load(struct tls_strparser *strp, bool force_refresh)
 {
 	struct strp_msg *rxm;
 	struct tls_msg *tlm;
@@ -490,8 +490,11 @@ void tls_strp_msg_load(struct tls_strparser *strp, bool force_refresh)
 	DEBUG_NET_WARN_ON_ONCE(!strp->stm.full_len);
 
 	if (!strp->copy_mode && force_refresh) {
-		if (WARN_ON(tcp_inq(strp->sk) < strp->stm.full_len))
-			return;
+		if (unlikely(tcp_inq(strp->sk) < strp->stm.full_len)) {
+			WRITE_ONCE(strp->msg_ready, 0);
+			memset(&strp->stm, 0, sizeof(strp->stm));
+			return false;
+		}
 
 		tls_strp_load_anchor_with_queue(strp, strp->stm.full_len);
 	}
@@ -501,6 +504,8 @@ void tls_strp_msg_load(struct tls_strparser *strp, bool force_refresh)
 	rxm->offset	= strp->stm.offset;
 	tlm = tls_msg(strp->anchor);
 	tlm->control	= strp->mark;
+
+	return true;
 }
 
 /* Called with lock held on lower socket */
@@ -533,7 +538,7 @@ static int tls_strp_read_sock(struct tls_strparser *strp)
 	if (!tls_strp_check_queue_ok(strp))
 		return tls_strp_read_copy(strp, false);
 
-	strp->msg_ready = 1;
+	WRITE_ONCE(strp->msg_ready, 1);
 	tls_rx_msg_ready(strp);
 
 	return 0;
@@ -585,7 +590,7 @@ void tls_strp_msg_done(struct tls_strparser *strp)
 	else
 		tls_strp_flush_anchor_copy(strp);
 
-	strp->msg_ready = 0;
+	WRITE_ONCE(strp->msg_ready, 0);
 	memset(&strp->stm, 0, sizeof(strp->stm));
 
 	tls_strp_check_rcv(strp);
diff --git a/net/tls/tls_sw.c b/net/tls/tls_sw.c
index 1b336522ca67d6..242f96f7990845 100644
--- a/net/tls/tls_sw.c
+++ b/net/tls/tls_sw.c
@@ -1510,7 +1510,8 @@ tls_rx_rec_wait(struct sock *sk, struct sk_psock *psock, bool nonblock,
 			return sock_intr_errno(timeo);
 	}
 
-	tls_strp_msg_load(&ctx->strp, released);
+	if (unlikely(!tls_strp_msg_load(&ctx->strp, released)))
+		return tls_rx_rec_wait(sk, psock, nonblock, false);
 
 	return 1;
 }
diff --git a/net/xfrm/xfrm_state.c b/net/xfrm/xfrm_state.c
index 6f70aeaafe1461..4b0835cb58f5d1 100644
--- a/net/xfrm/xfrm_state.c
+++ b/net/xfrm/xfrm_state.c
@@ -2428,7 +2428,7 @@ int xfrm_user_policy(struct sock *sk, int optname, sockptr_t optval, int optlen)
 	if (sockptr_is_null(optval) && !optlen) {
 		xfrm_sk_policy_insert(sk, XFRM_POLICY_IN, NULL);
 		xfrm_sk_policy_insert(sk, XFRM_POLICY_OUT, NULL);
-		__sk_dst_reset(sk);
+		sk_dst_reset(sk);
 		return 0;
 	}
 
@@ -2468,7 +2468,7 @@ int xfrm_user_policy(struct sock *sk, int optname, sockptr_t optval, int optlen)
 	if (err >= 0) {
 		xfrm_sk_policy_insert(sk, err, pol);
 		xfrm_pol_put(pol);
-		__sk_dst_reset(sk);
+		sk_dst_reset(sk);
 		err = 0;
 	}
 
diff --git a/sound/drivers/dummy.c b/sound/drivers/dummy.c
index 9c17b49a2ae1c9..eabfb3fd552595 100644
--- a/sound/drivers/dummy.c
+++ b/sound/drivers/dummy.c
@@ -1033,6 +1033,12 @@ static int snd_dummy_probe(struct platform_device *devptr)
 	int idx, err;
 	int dev = devptr->id;
 
+	if (dev < 0 || dev >= SNDRV_CARDS) {
+		dev_warn(&devptr->dev,
+			 "Invalid card index %d, using default 0\n", dev);
+		dev = 0;
+	}
+
 	err = snd_devm_card_new(&devptr->dev, index[dev], id[dev], THIS_MODULE,
 				sizeof(struct snd_dummy), &card);
 	if (err < 0)
diff --git a/sound/soc/codecs/lpass-tx-macro.c b/sound/soc/codecs/lpass-tx-macro.c
index aef2897e00fef4..d759fcd1ab0b6d 100644
--- a/sound/soc/codecs/lpass-tx-macro.c
+++ b/sound/soc/codecs/lpass-tx-macro.c
@@ -1015,7 +1015,7 @@ static int tx_macro_dec_mode_get(struct snd_kcontrol *kcontrol,
 	struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
 	int path = e->shift_l;
 
-	ucontrol->value.integer.value[0] = tx->dec_mode[path];
+	ucontrol->value.enumerated.item[0] = tx->dec_mode[path];
 
 	return 0;
 }
@@ -1024,7 +1024,7 @@ static int tx_macro_dec_mode_put(struct snd_kcontrol *kcontrol,
 				 struct snd_ctl_elem_value *ucontrol)
 {
 	struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
-	int value = ucontrol->value.integer.value[0];
+	int value = ucontrol->value.enumerated.item[0];
 	struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
 	int path = e->shift_l;
 	struct tx_macro *tx = snd_soc_component_get_drvdata(component);
