diff --git a/arch/arm64/kernel/ptrace.c b/arch/arm64/kernel/ptrace.c
index 2817e39881fee304b39c9ff9ef8566f7541d8de7..6c9e7662c07f794269699a37879d92effcd9f384 100644
--- a/arch/arm64/kernel/ptrace.c
+++ b/arch/arm64/kernel/ptrace.c
@@ -1040,7 +1040,7 @@ static int tagged_addr_ctrl_get(struct task_struct *target,
 {
 	long ctrl = get_tagged_addr_ctrl(target);
 
-	if (IS_ERR_VALUE(ctrl))
+	if (WARN_ON_ONCE(IS_ERR_VALUE(ctrl)))
 		return ctrl;
 
 	return membuf_write(&to, &ctrl, sizeof(ctrl));
@@ -1054,6 +1054,10 @@ static int tagged_addr_ctrl_set(struct task_struct *target, const struct
 	int ret;
 	long ctrl;
 
+	ctrl = get_tagged_addr_ctrl(target);
+	if (WARN_ON_ONCE(IS_ERR_VALUE(ctrl)))
+		return ctrl;
+
 	ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, &ctrl, 0, -1);
 	if (ret)
 		return ret;
diff --git a/arch/s390/kernel/perf_cpum_sf.c b/arch/s390/kernel/perf_cpum_sf.c
index bcd31e0b4edb345a95973a2a667045f77bde06cf..af41550d34b9f265c2fed60d25dfd5bec06290d2 100644
--- a/arch/s390/kernel/perf_cpum_sf.c
+++ b/arch/s390/kernel/perf_cpum_sf.c
@@ -1900,7 +1900,9 @@ static void cpumsf_pmu_stop(struct perf_event *event, int flags)
 	event->hw.state |= PERF_HES_STOPPED;
 
 	if ((flags & PERF_EF_UPDATE) && !(event->hw.state & PERF_HES_UPTODATE)) {
-		hw_perf_event_update(event, 1);
+		/* CPU hotplug off removes SDBs. No samples to extract. */
+		if (cpuhw->flags & PMU_F_RESERVED)
+			hw_perf_event_update(event, 1);
 		event->hw.state |= PERF_HES_UPTODATE;
 	}
 	perf_pmu_enable(event->pmu);
diff --git a/drivers/gpu/drm/drm_modes.c b/drivers/gpu/drm/drm_modes.c
index 0f99e5453f1526a8daa5f554ebc9ca142b2c7471..8bebc29a129d766ec5f27e80087be787068d6fd3 100644
--- a/drivers/gpu/drm/drm_modes.c
+++ b/drivers/gpu/drm/drm_modes.c
@@ -757,14 +757,11 @@ EXPORT_SYMBOL(drm_mode_set_name);
  */
 int drm_mode_vrefresh(const struct drm_display_mode *mode)
 {
-	unsigned int num, den;
+	unsigned int num = 1, den = 1;
 
 	if (mode->htotal == 0 || mode->vtotal == 0)
 		return 0;
 
-	num = mode->clock;
-	den = mode->htotal * mode->vtotal;
-
 	if (mode->flags & DRM_MODE_FLAG_INTERLACE)
 		num *= 2;
 	if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
@@ -772,6 +769,12 @@ int drm_mode_vrefresh(const struct drm_display_mode *mode)
 	if (mode->vscan > 1)
 		den *= mode->vscan;
 
+	if (check_mul_overflow(mode->clock, num, &num))
+		return 0;
+
+	if (check_mul_overflow(mode->htotal * mode->vtotal, den, &den))
+		return 0;
+
 	return DIV_ROUND_CLOSEST_ULL(mul_u32_u32(num, 1000), den);
 }
 EXPORT_SYMBOL(drm_mode_vrefresh);
diff --git a/drivers/iio/adc/rockchip_saradc.c b/drivers/iio/adc/rockchip_saradc.c
index 12584f1631d88887c8835e366f82a602ddc0a2b2..deb58e232770e0e5a97e7b26f3686a8b0d9dc138 100644
--- a/drivers/iio/adc/rockchip_saradc.c
+++ b/drivers/iio/adc/rockchip_saradc.c
@@ -254,6 +254,8 @@ static irqreturn_t rockchip_saradc_trigger_handler(int irq, void *p)
 	int ret;
 	int i, j = 0;
 
+	memset(&data, 0, sizeof(data));
+
 	mutex_lock(&i_dev->mlock);
 
 	for_each_set_bit(i, i_dev->active_scan_mask, i_dev->masklength) {
diff --git a/drivers/media/dvb-frontends/dib3000mb.c b/drivers/media/dvb-frontends/dib3000mb.c
index c598b2a633256518944cb418f6032c50dfaef630..7c452ddd9e40fa1987d54cad5269cce4ba4fea8b 100644
--- a/drivers/media/dvb-frontends/dib3000mb.c
+++ b/drivers/media/dvb-frontends/dib3000mb.c
@@ -51,7 +51,7 @@ MODULE_PARM_DESC(debug, "set debugging level (1=info,2=xfer,4=setfe,8=getfe (|-a
 static int dib3000_read_reg(struct dib3000_state *state, u16 reg)
 {
 	u8 wb[] = { ((reg >> 8) | 0x80) & 0xff, reg & 0xff };
-	u8 rb[2];
+	u8 rb[2] = {};
 	struct i2c_msg msg[] = {
 		{ .addr = state->config.demod_address, .flags = 0,        .buf = wb, .len = 2 },
 		{ .addr = state->config.demod_address, .flags = I2C_M_RD, .buf = rb, .len = 2 },
diff --git a/drivers/media/usb/uvc/uvc_driver.c b/drivers/media/usb/uvc/uvc_driver.c
index 12fa3ff387a86fe80b6b903e350804428df676d1..c03e7f3e7b5c4f69ccd264ef5b795654da893986 100644
--- a/drivers/media/usb/uvc/uvc_driver.c
+++ b/drivers/media/usb/uvc/uvc_driver.c
@@ -1019,14 +1019,27 @@ static int uvc_parse_streaming(struct uvc_device *dev,
 	return ret;
 }
 
-static struct uvc_entity *uvc_alloc_entity(u16 type, u8 id,
-		unsigned int num_pads, unsigned int extra_size)
+static struct uvc_entity *uvc_alloc_new_entity(struct uvc_device *dev, u16 type,
+					       u16 id, unsigned int num_pads,
+					       unsigned int extra_size)
 {
 	struct uvc_entity *entity;
 	unsigned int num_inputs;
 	unsigned int size;
 	unsigned int i;
 
+	/* Per UVC 1.1+ spec 3.7.2, the ID should be non-zero. */
+	if (id == 0) {
+		dev_err(&dev->udev->dev, "Found Unit with invalid ID 0.\n");
+		return ERR_PTR(-EINVAL);
+	}
+
+	/* Per UVC 1.1+ spec 3.7.2, the ID is unique. */
+	if (uvc_entity_by_id(dev, id)) {
+		dev_err(&dev->udev->dev, "Found multiple Units with ID %u\n", id);
+		return ERR_PTR(-EINVAL);
+	}
+
 	extra_size = roundup(extra_size, sizeof(*entity->pads));
 	if (num_pads)
 		num_inputs = type & UVC_TERM_OUTPUT ? num_pads : num_pads - 1;
@@ -1036,7 +1049,7 @@ static struct uvc_entity *uvc_alloc_entity(u16 type, u8 id,
 	     + num_inputs;
 	entity = kzalloc(size, GFP_KERNEL);
 	if (entity == NULL)
-		return NULL;
+		return ERR_PTR(-ENOMEM);
 
 	entity->id = id;
 	entity->type = type;
@@ -1107,10 +1120,10 @@ static int uvc_parse_vendor_control(struct uvc_device *dev,
 			break;
 		}
 
-		unit = uvc_alloc_entity(UVC_VC_EXTENSION_UNIT, buffer[3],
-					p + 1, 2*n);
-		if (unit == NULL)
-			return -ENOMEM;
+		unit = uvc_alloc_new_entity(dev, UVC_VC_EXTENSION_UNIT,
+					    buffer[3], p + 1, 2 * n);
+		if (IS_ERR(unit))
+			return PTR_ERR(unit);
 
 		memcpy(unit->extension.guidExtensionCode, &buffer[4], 16);
 		unit->extension.bNumControls = buffer[20];
@@ -1221,10 +1234,10 @@ static int uvc_parse_standard_control(struct uvc_device *dev,
 			return -EINVAL;
 		}
 
-		term = uvc_alloc_entity(type | UVC_TERM_INPUT, buffer[3],
-					1, n + p);
-		if (term == NULL)
-			return -ENOMEM;
+		term = uvc_alloc_new_entity(dev, type | UVC_TERM_INPUT,
+					    buffer[3], 1, n + p);
+		if (IS_ERR(term))
+			return PTR_ERR(term);
 
 		if (UVC_ENTITY_TYPE(term) == UVC_ITT_CAMERA) {
 			term->camera.bControlSize = n;
@@ -1280,10 +1293,10 @@ static int uvc_parse_standard_control(struct uvc_device *dev,
 			return 0;
 		}
 
-		term = uvc_alloc_entity(type | UVC_TERM_OUTPUT, buffer[3],
-					1, 0);
-		if (term == NULL)
-			return -ENOMEM;
+		term = uvc_alloc_new_entity(dev, type | UVC_TERM_OUTPUT,
+					    buffer[3], 1, 0);
+		if (IS_ERR(term))
+			return PTR_ERR(term);
 
 		memcpy(term->baSourceID, &buffer[7], 1);
 
@@ -1304,9 +1317,10 @@ static int uvc_parse_standard_control(struct uvc_device *dev,
 			return -EINVAL;
 		}
 
-		unit = uvc_alloc_entity(buffer[2], buffer[3], p + 1, 0);
-		if (unit == NULL)
-			return -ENOMEM;
+		unit = uvc_alloc_new_entity(dev, buffer[2], buffer[3],
+					    p + 1, 0);
+		if (IS_ERR(unit))
+			return PTR_ERR(unit);
 
 		memcpy(unit->baSourceID, &buffer[5], p);
 
@@ -1328,9 +1342,9 @@ static int uvc_parse_standard_control(struct uvc_device *dev,
 			return -EINVAL;
 		}
 
-		unit = uvc_alloc_entity(buffer[2], buffer[3], 2, n);
-		if (unit == NULL)
-			return -ENOMEM;
+		unit = uvc_alloc_new_entity(dev, buffer[2], buffer[3], 2, n);
+		if (IS_ERR(unit))
+			return PTR_ERR(unit);
 
 		memcpy(unit->baSourceID, &buffer[4], 1);
 		unit->processing.wMaxMultiplier =
@@ -1359,9 +1373,10 @@ static int uvc_parse_standard_control(struct uvc_device *dev,
 			return -EINVAL;
 		}
 
-		unit = uvc_alloc_entity(buffer[2], buffer[3], p + 1, n);
-		if (unit == NULL)
-			return -ENOMEM;
+		unit = uvc_alloc_new_entity(dev, buffer[2], buffer[3],
+					    p + 1, n);
+		if (IS_ERR(unit))
+			return PTR_ERR(unit);
 
 		memcpy(unit->extension.guidExtensionCode, &buffer[4], 16);
 		unit->extension.bNumControls = buffer[20];
diff --git a/drivers/mtd/ubi/attach.c b/drivers/mtd/ubi/attach.c
index ae5abe492b52abc2ed405f3a87fba025b877a750..adc47b87b38a5f89a35aa064913a2c503690efa5 100644
--- a/drivers/mtd/ubi/attach.c
+++ b/drivers/mtd/ubi/attach.c
@@ -1447,7 +1447,7 @@ static int scan_all(struct ubi_device *ubi, struct ubi_attach_info *ai,
 	return err;
 }
 
-static struct ubi_attach_info *alloc_ai(void)
+static struct ubi_attach_info *alloc_ai(const char *slab_name)
 {
 	struct ubi_attach_info *ai;
 
@@ -1461,7 +1461,7 @@ static struct ubi_attach_info *alloc_ai(void)
 	INIT_LIST_HEAD(&ai->alien);
 	INIT_LIST_HEAD(&ai->fastmap);
 	ai->volumes = RB_ROOT;
-	ai->aeb_slab_cache = kmem_cache_create("ubi_aeb_slab_cache",
+	ai->aeb_slab_cache = kmem_cache_create(slab_name,
 					       sizeof(struct ubi_ainf_peb),
 					       0, 0, NULL);
 	if (!ai->aeb_slab_cache) {
@@ -1491,7 +1491,7 @@ static int scan_fast(struct ubi_device *ubi, struct ubi_attach_info **ai)
 
 	err = -ENOMEM;
 
-	scan_ai = alloc_ai();
+	scan_ai = alloc_ai("ubi_aeb_slab_cache_fastmap");
 	if (!scan_ai)
 		goto out;
 
@@ -1557,7 +1557,7 @@ int ubi_attach(struct ubi_device *ubi, int force_scan)
 	int err;
 	struct ubi_attach_info *ai;
 
-	ai = alloc_ai();
+	ai = alloc_ai("ubi_aeb_slab_cache");
 	if (!ai)
 		return -ENOMEM;
 
@@ -1575,7 +1575,7 @@ int ubi_attach(struct ubi_device *ubi, int force_scan)
 		if (err > 0 || mtd_is_eccerr(err)) {
 			if (err != UBI_NO_FASTMAP) {
 				destroy_ai(ai);
-				ai = alloc_ai();
+				ai = alloc_ai("ubi_aeb_slab_cache");
 				if (!ai)
 					return -ENOMEM;
 
@@ -1614,7 +1614,7 @@ int ubi_attach(struct ubi_device *ubi, int force_scan)
 	if (ubi->fm && ubi_dbg_chk_fastmap(ubi)) {
 		struct ubi_attach_info *scan_ai;
 
-		scan_ai = alloc_ai();
+		scan_ai = alloc_ai("ubi_aeb_slab_cache_dbg_chk_fastmap");
 		if (!scan_ai) {
 			err = -ENOMEM;
 			goto out_wl;
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac.h b/drivers/net/ethernet/stmicro/stmmac/stmmac.h
index 617c960cfb5a59d8fa6fe1b987e7a02f3031c4e5..b98e84a0839a0e4fa8a676b40ad9b89c7ef43964 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac.h
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac.h
@@ -192,6 +192,8 @@ struct stmmac_priv {
 	struct stmmac_extra_stats xstats ____cacheline_aligned_in_smp;
 	struct stmmac_safety_stats sstats;
 	struct plat_stmmacenet_data *plat;
+	/* Protect est parameters */
+	struct mutex est_lock;
 	struct dma_features dma_cap;
 	struct stmmac_counters mmc;
 	int hw_cap_support;
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c
index 43165c662740dc668a74b903ecd17166f2d86ea3..2429c57fa452e0bd920b474646f38f25b1856b22 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_tc.c
@@ -688,17 +688,19 @@ static int tc_setup_taprio(struct stmmac_priv *priv,
 		if (!plat->est)
 			return -ENOMEM;
 
-		mutex_init(&priv->plat->est->lock);
+		mutex_init(&priv->est_lock);
 	} else {
+		mutex_lock(&priv->est_lock);
 		memset(plat->est, 0, sizeof(*plat->est));
+		mutex_unlock(&priv->est_lock);
 	}
 
 	size = qopt->num_entries;
 
-	mutex_lock(&priv->plat->est->lock);
+	mutex_lock(&priv->est_lock);
 	priv->plat->est->gcl_size = size;
 	priv->plat->est->enable = qopt->enable;
-	mutex_unlock(&priv->plat->est->lock);
+	mutex_unlock(&priv->est_lock);
 
 	for (i = 0; i < size; i++) {
 		s64 delta_ns = qopt->entries[i].interval;
@@ -729,7 +731,7 @@ static int tc_setup_taprio(struct stmmac_priv *priv,
 		priv->plat->est->gcl[i] = delta_ns | (gates << wid);
 	}
 
-	mutex_lock(&priv->plat->est->lock);
+	mutex_lock(&priv->est_lock);
 	/* Adjust for real system time */
 	priv->ptp_clock_ops.gettime64(&priv->ptp_clock_ops, &current_time);
 	current_time_ns = timespec64_to_ktime(current_time);
@@ -755,7 +757,7 @@ static int tc_setup_taprio(struct stmmac_priv *priv,
 	priv->plat->est->ctr[1] = (u32)ctr;
 
 	if (fpe && !priv->dma_cap.fpesel) {
-		mutex_unlock(&priv->plat->est->lock);
+		mutex_unlock(&priv->est_lock);
 		return -EOPNOTSUPP;
 	}
 
@@ -763,14 +765,14 @@ static int tc_setup_taprio(struct stmmac_priv *priv,
 				   priv->plat->tx_queues_to_use,
 				   priv->plat->rx_queues_to_use, fpe);
 	if (ret && fpe) {
-		mutex_unlock(&priv->plat->est->lock);
+		mutex_unlock(&priv->est_lock);
 		netdev_err(priv->dev, "failed to enable Frame Preemption\n");
 		return ret;
 	}
 
 	ret = stmmac_est_configure(priv, priv->ioaddr, priv->plat->est,
 				   priv->plat->clk_ptp_rate);
-	mutex_unlock(&priv->plat->est->lock);
+	mutex_unlock(&priv->est_lock);
 	if (ret) {
 		netdev_err(priv->dev, "failed to configure EST\n");
 		goto disable;
@@ -781,11 +783,11 @@ static int tc_setup_taprio(struct stmmac_priv *priv,
 
 disable:
 	if (priv->plat->est) {
-		mutex_lock(&priv->plat->est->lock);
+		mutex_lock(&priv->est_lock);
 		priv->plat->est->enable = false;
 		stmmac_est_configure(priv, priv->ioaddr, priv->plat->est,
 				     priv->plat->clk_ptp_rate);
-		mutex_unlock(&priv->plat->est->lock);
+		mutex_unlock(&priv->est_lock);
 	}
 
 	return ret;
diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c
index 095d16ceafcf83a877173faa3d8f89948f300592..8654e05ddc4153df2448a277a23d7ba06c7ae04b 100644
--- a/drivers/net/phy/phy_device.c
+++ b/drivers/net/phy/phy_device.c
@@ -2769,7 +2769,7 @@ s32 phy_get_internal_delay(struct phy_device *phydev, struct device *dev,
 	if (delay < 0)
 		return delay;
 
-	if (delay && size == 0)
+	if (size == 0)
 		return delay;
 
 	if (delay < delay_values[0] || delay > delay_values[size - 1]) {
diff --git a/drivers/pci/slot.c b/drivers/pci/slot.c
index ed2077e7470aef1e232929dd28daf47df66c41ca..a42e2cf774fd89946bb835e295be06ad7221f1e1 100644
--- a/drivers/pci/slot.c
+++ b/drivers/pci/slot.c
@@ -79,6 +79,7 @@ static void pci_slot_release(struct kobject *kobj)
 	up_read(&pci_bus_sem);
 
 	list_del(&slot->list);
+	pci_bus_put(slot->bus);
 
 	kfree(slot);
 }
@@ -260,7 +261,7 @@ struct pci_slot *pci_create_slot(struct pci_bus *parent, int slot_nr,
 		goto err;
 	}
 
-	slot->bus = parent;
+	slot->bus = pci_bus_get(parent);
 	slot->number = slot_nr;
 
 	slot->kobj.kset = pci_slots_kset;
@@ -268,6 +269,7 @@ struct pci_slot *pci_create_slot(struct pci_bus *parent, int slot_nr,
 	slot_name = make_slot_name(name);
 	if (!slot_name) {
 		err = -ENOMEM;
+		pci_bus_put(slot->bus);
 		kfree(slot);
 		goto err;
 	}
diff --git a/drivers/power/supply/gpio-charger.c b/drivers/power/supply/gpio-charger.c
index 68212b39785beabfe5536a18fa15bc249f7b1eea..6139f736ecbe4ffc74848797a72095f4cadf3b62 100644
--- a/drivers/power/supply/gpio-charger.c
+++ b/drivers/power/supply/gpio-charger.c
@@ -67,6 +67,14 @@ static int set_charge_current_limit(struct gpio_charger *gpio_charger, int val)
 		if (gpio_charger->current_limit_map[i].limit_ua <= val)
 			break;
 	}
+
+	/*
+	 * If a valid charge current limit isn't found, default to smallest
+	 * current limitation for safety reasons.
+	 */
+	if (i >= gpio_charger->current_limit_map_size)
+		i = gpio_charger->current_limit_map_size - 1;
+
 	mapping = gpio_charger->current_limit_map[i];
 
 	for (i = 0; i < ndescs; i++) {
diff --git a/drivers/rtc/interface.c b/drivers/rtc/interface.c
index 146056858135e304fce9d0a173d8d667427b5394..930586b1cc578ce3c984adb88ba225046fcd1e61 100644
--- a/drivers/rtc/interface.c
+++ b/drivers/rtc/interface.c
@@ -906,13 +906,18 @@ void rtc_timer_do_work(struct work_struct *work)
 	struct timerqueue_node *next;
 	ktime_t now;
 	struct rtc_time tm;
+	int err;
 
 	struct rtc_device *rtc =
 		container_of(work, struct rtc_device, irqwork);
 
 	mutex_lock(&rtc->ops_lock);
 again:
-	__rtc_read_time(rtc, &tm);
+	err = __rtc_read_time(rtc, &tm);
+	if (err) {
+		mutex_unlock(&rtc->ops_lock);
+		return;
+	}
 	now = rtc_tm_to_ktime(tm);
 	while ((next = timerqueue_getnext(&rtc->timerqueue))) {
 		if (next->expires > now)
diff --git a/fs/exfat/dir.c b/fs/exfat/dir.c
index db735a0d32fc61bdc5aca064896f2fcec0aec2d7..ce28691fae767e7edb0dd44d8f338b641a8e8c5b 100644
--- a/fs/exfat/dir.c
+++ b/fs/exfat/dir.c
@@ -125,7 +125,7 @@ static int exfat_readdir(struct inode *inode, loff_t *cpos, struct exfat_dir_ent
 			type = exfat_get_entry_type(ep);
 			if (type == TYPE_UNUSED) {
 				brelse(bh);
-				break;
+				goto out;
 			}
 
 			if (type != TYPE_FILE && type != TYPE_DIR) {
@@ -185,6 +185,7 @@ static int exfat_readdir(struct inode *inode, loff_t *cpos, struct exfat_dir_ent
 		}
 	}
 
+out:
 	dir_entry->namebuf.lfn[0] = '\0';
 	*cpos = EXFAT_DEN_TO_B(dentry);
 	return 0;
diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index 02cb1c806c3ed29eeaa8c9ea036147c8dbd950e4..c5e1933d33352869bb5e4c15dc572131d31ae6db 100644
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -838,6 +838,15 @@ static int truncate_node(struct dnode_of_data *dn)
 	if (err)
 		return err;
 
+	if (ni.blk_addr != NEW_ADDR &&
+		!f2fs_is_valid_blkaddr(sbi, ni.blk_addr, DATA_GENERIC_ENHANCE)) {
+		f2fs_err(sbi,
+			"nat entry is corrupted, run fsck to fix it, ino:%u, "
+			"nid:%u, blkaddr:%u", ni.ino, ni.nid, ni.blk_addr);
+		set_sbi_flag(sbi, SBI_NEED_FSCK);
+		return -EFSCORRUPTED;
+	}
+
 	/* Deallocate node address */
 	f2fs_invalidate_blocks(sbi, ni.blk_addr);
 	dec_valid_node_count(sbi, dn->inode, dn->nid == dn->inode->i_ino);
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 7c3c96ed60853c4fc7955629e03b5974d7340d56..9ed5fcd2dd1430ce2fc3ec3b57dd8893408aba50 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -2518,12 +2518,14 @@ static void nfs4_open_release(void *calldata)
 	struct nfs4_opendata *data = calldata;
 	struct nfs4_state *state = NULL;
 
+	/* In case of error, no cleanup! */
+	if (data->rpc_status != 0 || !data->rpc_done) {
+		nfs_release_seqid(data->o_arg.seqid);
+		goto out_free;
+	}
 	/* If this request hasn't been cancelled, do nothing */
 	if (!data->cancelled)
 		goto out_free;
-	/* In case of error, no cleanup! */
-	if (data->rpc_status != 0 || !data->rpc_done)
-		goto out_free;
 	/* In case we need an open_confirm, no cleanup! */
 	if (data->o_res.rflags & NFS4_OPEN_RESULT_CONFIRM)
 		goto out_free;
diff --git a/fs/notify/fdinfo.c b/fs/notify/fdinfo.c
index 765b50aeadd28b9718ec7d60bbdb2bbc2ede6e37..ba608381486d2721b7744fa70f8825ee22520bb5 100644
--- a/fs/notify/fdinfo.c
+++ b/fs/notify/fdinfo.c
@@ -50,10 +50,8 @@ static void show_mark_fhandle(struct seq_file *m, struct inode *inode)
 	size = f.handle.handle_bytes >> 2;
 
 	ret = exportfs_encode_inode_fh(inode, (struct fid *)f.handle.f_handle, &size, NULL);
-	if ((ret == FILEID_INVALID) || (ret < 0)) {
-		WARN_ONCE(1, "Can't encode file handler for inotify: %d\n", ret);
+	if ((ret == FILEID_INVALID) || (ret < 0))
 		return;
-	}
 
 	f.handle.handle_type = ret;
 	f.handle.handle_bytes = size * sizeof(u32);
diff --git a/fs/overlayfs/copy_up.c b/fs/overlayfs/copy_up.c
index 65ac504595ba4087230e506feed2543f5892f703..8557180bd7e1544a85ab997bc4f1383925abd840 100644
--- a/fs/overlayfs/copy_up.c
+++ b/fs/overlayfs/copy_up.c
@@ -302,9 +302,8 @@ struct ovl_fh *ovl_encode_real_fh(struct dentry *real, bool is_upper)
 	buflen = (dwords << 2);
 
 	err = -EIO;
-	if (WARN_ON(fh_type < 0) ||
-	    WARN_ON(buflen > MAX_HANDLE_SZ) ||
-	    WARN_ON(fh_type == FILEID_INVALID))
+	if (fh_type < 0 || fh_type == FILEID_INVALID ||
+	    WARN_ON(buflen > MAX_HANDLE_SZ))
 		goto out_err;
 
 	fh->fb.version = OVL_FH_VERSION;
diff --git a/fs/ubifs/tnc_commit.c b/fs/ubifs/tnc_commit.c
index 234be1c4dc8705ae19d8357f266d8bf219e2f3d8..dc4f794fd5b73c93040a81f401e43c4e7cda7fae 100644
--- a/fs/ubifs/tnc_commit.c
+++ b/fs/ubifs/tnc_commit.c
@@ -657,6 +657,8 @@ static int get_znodes_to_commit(struct ubifs_info *c)
 		znode->alt = 0;
 		cnext = find_next_dirty(znode);
 		if (!cnext) {
+			ubifs_assert(c, !znode->parent);
+			znode->cparent = NULL;
 			znode->cnext = c->cnext;
 			break;
 		}
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index 5807bc877b7838ccc6b995872919b41558bcdccb..2d8d3a616092323e07869b8573673ea4a5dea5c4 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -1401,8 +1401,9 @@ static inline int subsection_map_index(unsigned long pfn)
 static inline int pfn_section_valid(struct mem_section *ms, unsigned long pfn)
 {
 	int idx = subsection_map_index(pfn);
+	struct mem_section_usage *usage = READ_ONCE(ms->usage);
 
-	return test_bit(idx, ms->usage->subsection_map);
+	return usage ? test_bit(idx, usage->subsection_map) : 0;
 }
 #else
 static inline int pfn_section_valid(struct mem_section *ms, unsigned long pfn)
diff --git a/include/linux/stmmac.h b/include/linux/stmmac.h
index abf7b8ec1fb646248dd1ac1b3a6bed1befb0a9ef..184d7a814dc96e427300a8eb08cf42bea67a638f 100644
--- a/include/linux/stmmac.h
+++ b/include/linux/stmmac.h
@@ -112,7 +112,6 @@ struct stmmac_axi {
 
 #define EST_GCL		1024
 struct stmmac_est {
-	struct mutex lock;
 	int enable;
 	u32 btr_offset[2];
 	u32 btr[2];
diff --git a/include/net/net_namespace.h b/include/net/net_namespace.h
index ac0f068f46fcee7dec858e92d3a3bf8892f8ded1..3c0ba2a91d793d77550a80647fef3084441f94bb 100644
--- a/include/net/net_namespace.h
+++ b/include/net/net_namespace.h
@@ -83,6 +83,7 @@ struct net {
 						 * or to unregister pernet ops
 						 * (pernet_ops_rwsem write locked).
 						 */
+	struct llist_node	defer_free_list;
 	struct llist_node	cleanup_list;	/* namespaces on death row */
 
 #ifdef CONFIG_KEYS
diff --git a/kernel/sched/deadline.c b/kernel/sched/deadline.c
index e811fdbefdd3cb0ff06566d055a1748ea87af019..f8c5803cf142f376e0965c9bbcec7352622df77a 100644
--- a/kernel/sched/deadline.c
+++ b/kernel/sched/deadline.c
@@ -1519,6 +1519,7 @@ enqueue_dl_entity(struct sched_dl_entity *dl_se, int flags)
 	} else if (flags & ENQUEUE_REPLENISH) {
 		replenish_dl_entity(dl_se);
 	} else if ((flags & ENQUEUE_RESTORE) &&
+		  !is_dl_boosted(dl_se) &&
 		  dl_time_before(dl_se->deadline,
 				 rq_clock(rq_of_dl_rq(dl_rq_of_se(dl_se))))) {
 		setup_new_dl_entity(dl_se);
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 548f694fc8574c9f3333f9f286f16748b9b6ae80..3ff88eb2850dccdc41f692b39be31ef36e258ce3 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -4896,6 +4896,9 @@ tracing_cpumask_write(struct file *filp, const char __user *ubuf,
 	cpumask_var_t tracing_cpumask_new;
 	int err;
 
+	if (count == 0 || count > KMALLOC_MAX_SIZE)
+		return -EINVAL;
+
 	if (!alloc_cpumask_var(&tracing_cpumask_new, GFP_KERNEL))
 		return -ENOMEM;
 
diff --git a/net/core/filter.c b/net/core/filter.c
index f20e79f2e054c2de2fd9133aa3a5b92b7ca07575..61395535c91c13e5db9288506937307c62e4afa3 100644
--- a/net/core/filter.c
+++ b/net/core/filter.c
@@ -2890,8 +2890,10 @@ static const struct bpf_func_proto bpf_msg_push_data_proto = {
 
 static void sk_msg_shift_left(struct sk_msg *msg, int i)
 {
+	struct scatterlist *sge = sk_msg_elem(msg, i);
 	int prev;
 
+	put_page(sg_page(sge));
 	do {
 		prev = i;
 		sk_msg_iter_var_next(i);
@@ -2928,6 +2930,9 @@ BPF_CALL_4(bpf_msg_pop_data, struct sk_msg *, msg, u32, start,
 	if (unlikely(flags))
 		return -EINVAL;
 
+	if (unlikely(len == 0))
+		return 0;
+
 	/* First find the starting scatterlist element */
 	i = msg->sg.start;
 	do {
@@ -2940,7 +2945,7 @@ BPF_CALL_4(bpf_msg_pop_data, struct sk_msg *, msg, u32, start,
 	} while (i != msg->sg.end);
 
 	/* Bounds checks: start and pop must be inside message */
-	if (start >= offset + l || last >= msg->sg.size)
+	if (start >= offset + l || last > msg->sg.size)
 		return -EINVAL;
 
 	space = MAX_MSG_FRAGS - sk_msg_elem_used(msg);
@@ -2969,12 +2974,12 @@ BPF_CALL_4(bpf_msg_pop_data, struct sk_msg *, msg, u32, start,
 	 */
 	if (start != offset) {
 		struct scatterlist *nsge, *sge = sk_msg_elem(msg, i);
-		int a = start;
+		int a = start - offset;
 		int b = sge->length - pop - a;
 
 		sk_msg_iter_var_next(i);
 
-		if (pop < sge->length - a) {
+		if (b > 0) {
 			if (space) {
 				sge->length = a;
 				sk_msg_shift_right(msg, i);
@@ -2993,7 +2998,6 @@ BPF_CALL_4(bpf_msg_pop_data, struct sk_msg *, msg, u32, start,
 				if (unlikely(!page))
 					return -ENOMEM;
 
-				sge->length = a;
 				orig = sg_page(sge);
 				from = sg_virt(sge);
 				to = page_address(page);
@@ -3003,7 +3007,7 @@ BPF_CALL_4(bpf_msg_pop_data, struct sk_msg *, msg, u32, start,
 				put_page(orig);
 			}
 			pop = 0;
-		} else if (pop >= sge->length - a) {
+		} else {
 			pop -= (sge->length - a);
 			sge->length = a;
 		}
@@ -3037,7 +3041,6 @@ BPF_CALL_4(bpf_msg_pop_data, struct sk_msg *, msg, u32, start,
 			pop -= sge->length;
 			sk_msg_shift_left(msg, i);
 		}
-		sk_msg_iter_var_next(i);
 	}
 
 	sk_mem_uncharge(msg->sk, len - pop);
diff --git a/net/core/net_namespace.c b/net/core/net_namespace.c
index 72cfe5248b764267d970c2d536bf56c6fc494bc6..a57cbffc42da2170336b197a614f22281f600979 100644
--- a/net/core/net_namespace.c
+++ b/net/core/net_namespace.c
@@ -452,10 +452,26 @@ static struct net *net_alloc(void)
 	goto out;
 }
 
+static LLIST_HEAD(defer_free_list);
+
+static void net_complete_free(void)
+{
+	struct llist_node *kill_list;
+	struct net *net, *next;
+
+	/* Get the list of namespaces to free from last round. */
+	kill_list = llist_del_all(&defer_free_list);
+
+	llist_for_each_entry_safe(net, next, kill_list, defer_free_list)
+		kmem_cache_free(net_cachep, net);
+
+}
+
 static void net_free(struct net *net)
 {
 	kfree(rcu_access_pointer(net->gen));
-	kmem_cache_free(net_cachep, net);
+	/* Wait for an extra rcu_barrier() before final free. */
+	llist_add(&net->defer_free_list, &defer_free_list);
 }
 
 void net_drop_ns(void *p)
@@ -628,6 +644,8 @@ static void cleanup_net(struct work_struct *work)
 	 */
 	rcu_barrier();
 
+	net_complete_free();
+
 	/* Finally it is safe to free my network namespace structure */
 	list_for_each_entry_safe(net, tmp, &net_exit_list, exit_list) {
 		list_del_init(&net->exit_list);
diff --git a/net/core/skmsg.c b/net/core/skmsg.c
index bb4fbc60b272e24268fccaf761b20af861d5aa82..fb8d81aa570f8116835ac50fb07632d562b61372 100644
--- a/net/core/skmsg.c
+++ b/net/core/skmsg.c
@@ -939,9 +939,9 @@ static void sk_psock_strp_data_ready(struct sock *sk)
 		if (tls_sw_has_ctx_rx(sk)) {
 			psock->parser.saved_data_ready(sk);
 		} else {
-			write_lock_bh(&sk->sk_callback_lock);
+			read_lock_bh(&sk->sk_callback_lock);
 			strp_data_ready(&psock->parser.strp);
-			write_unlock_bh(&sk->sk_callback_lock);
+			read_unlock_bh(&sk->sk_callback_lock);
 		}
 	}
 	rcu_read_unlock();
diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
index fe8ff31545a586fc7bbdb1bb71b3f5a2d0c7ab5d..39683614fb0f71f3fd850ca9589fafe4312ef621 100644
--- a/net/ipv4/af_inet.c
+++ b/net/ipv4/af_inet.c
@@ -376,32 +376,30 @@ static int inet_create(struct net *net, struct socket *sock, int protocol,
 		inet->inet_sport = htons(inet->inet_num);
 		/* Add to protocol hash chains. */
 		err = sk->sk_prot->hash(sk);
-		if (err) {
-			sk_common_release(sk);
-			goto out;
-		}
+		if (err)
+			goto out_sk_release;
 	}
 
 	if (sk->sk_prot->init) {
 		err = sk->sk_prot->init(sk);
-		if (err) {
-			sk_common_release(sk);
-			goto out;
-		}
+		if (err)
+			goto out_sk_release;
 	}
 
 	if (!kern) {
 		err = BPF_CGROUP_RUN_PROG_INET_SOCK(sk);
-		if (err) {
-			sk_common_release(sk);
-			goto out;
-		}
+		if (err)
+			goto out_sk_release;
 	}
 out:
 	return err;
 out_rcu_unlock:
 	rcu_read_unlock();
 	goto out;
+out_sk_release:
+	sk_common_release(sk);
+	sock->sk = NULL;
+	goto out;
 }
 
 
diff --git a/net/ipv4/icmp.c b/net/ipv4/icmp.c
index 0bbc047e8f6e130d1f2d076a914edb8f8c59e685..155ed02c8b6b85643b1b32a62cac52206fcb2a52 100644
--- a/net/ipv4/icmp.c
+++ b/net/ipv4/icmp.c
@@ -518,6 +518,9 @@ static struct rtable *icmp_route_lookup(struct net *net,
 	if (!IS_ERR(rt)) {
 		if (rt != rt2)
 			return rt;
+		if (inet_addr_type_dev_table(net, route_lookup_dev,
+					     fl4->daddr) == RTN_LOCAL)
+			return rt;
 	} else if (PTR_ERR(rt) == -EPERM) {
 		rt = NULL;
 	} else
diff --git a/net/ipv4/tcp_bpf.c b/net/ipv4/tcp_bpf.c
index d0ca1fc325cd6210336a92a600444ff2b98cfbef..05f9b55a7b08c38e57aaa64c2ca06506c50fa62b 100644
--- a/net/ipv4/tcp_bpf.c
+++ b/net/ipv4/tcp_bpf.c
@@ -375,7 +375,6 @@ static int tcp_bpf_send_verdict(struct sock *sk, struct sk_psock *psock,
 			cork = true;
 			psock->cork = NULL;
 		}
-		sk_msg_return(sk, msg, tosend);
 		release_sock(sk);
 
 		origsize = msg->sg.size;
@@ -386,8 +385,9 @@ static int tcp_bpf_send_verdict(struct sock *sk, struct sk_psock *psock,
 			sock_put(sk_redir);
 
 		lock_sock(sk);
+		sk_mem_uncharge(sk, sent);
 		if (unlikely(ret < 0)) {
-			int free = sk_msg_free_nocharge(sk, msg);
+			int free = sk_msg_free(sk, msg);
 
 			if (!cork)
 				*copied -= free;
@@ -401,7 +401,7 @@ static int tcp_bpf_send_verdict(struct sock *sk, struct sk_psock *psock,
 		break;
 	case __SK_DROP:
 	default:
-		sk_msg_free_partial(sk, msg, tosend);
+		sk_msg_free(sk, msg);
 		sk_msg_apply_bytes(psock, tosend);
 		*copied -= (tosend + delta);
 		return -EACCES;
@@ -417,11 +417,8 @@ static int tcp_bpf_send_verdict(struct sock *sk, struct sk_psock *psock,
 		}
 		if (msg &&
 		    msg->sg.data[msg->sg.start].page_link &&
-		    msg->sg.data[msg->sg.start].length) {
-			if (eval == __SK_REDIRECT)
-				sk_mem_charge(sk, tosend - sent);
+		    msg->sg.data[msg->sg.start].length)
 			goto more_data;
-		}
 	}
 	return ret;
 }
diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
index 0979a4b15f2620f4c15e35e3c3d2581cb8246328..a97c2bbbcb8326651c4d7c368008595e3b4ef451 100644
--- a/net/ipv6/af_inet6.c
+++ b/net/ipv6/af_inet6.c
@@ -254,31 +254,29 @@ static int inet6_create(struct net *net, struct socket *sock, int protocol,
 		 */
 		inet->inet_sport = htons(inet->inet_num);
 		err = sk->sk_prot->hash(sk);
-		if (err) {
-			sk_common_release(sk);
-			goto out;
-		}
+		if (err)
+			goto out_sk_release;
 	}
 	if (sk->sk_prot->init) {
 		err = sk->sk_prot->init(sk);
-		if (err) {
-			sk_common_release(sk);
-			goto out;
-		}
+		if (err)
+			goto out_sk_release;
 	}
 
 	if (!kern) {
 		err = BPF_CGROUP_RUN_PROG_INET_SOCK(sk);
-		if (err) {
-			sk_common_release(sk);
-			goto out;
-		}
+		if (err)
+			goto out_sk_release;
 	}
 out:
 	return err;
 out_rcu_unlock:
 	rcu_read_unlock();
 	goto out;
+out_sk_release:
+	sk_common_release(sk);
+	sock->sk = NULL;
+	goto out;
 }
 
 static int __inet6_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len,
diff --git a/net/ipv6/ip6_fib.c b/net/ipv6/ip6_fib.c
index 23881e5ebb3d4a60c96ecefd12355651c15677c3..9fbfa9b599cfa3dd68fad147b8c4f3d7687809de 100644
--- a/net/ipv6/ip6_fib.c
+++ b/net/ipv6/ip6_fib.c
@@ -1174,8 +1174,8 @@ static int fib6_add_rt2node(struct fib6_node *fn, struct fib6_info *rt,
 		while (sibling) {
 			if (sibling->fib6_metric == rt->fib6_metric &&
 			    rt6_qualify_for_ecmp(sibling)) {
-				list_add_tail(&rt->fib6_siblings,
-					      &sibling->fib6_siblings);
+				list_add_tail_rcu(&rt->fib6_siblings,
+						  &sibling->fib6_siblings);
 				break;
 			}
 			sibling = rcu_dereference_protected(sibling->fib6_next,
@@ -1236,7 +1236,7 @@ static int fib6_add_rt2node(struct fib6_node *fn, struct fib6_info *rt,
 							 fib6_siblings)
 					sibling->fib6_nsiblings--;
 				rt->fib6_nsiblings = 0;
-				list_del_init(&rt->fib6_siblings);
+				list_del_rcu(&rt->fib6_siblings);
 				rt6_multipath_rebalance(next_sibling);
 				return err;
 			}
@@ -1946,7 +1946,7 @@ static void fib6_del_route(struct fib6_table *table, struct fib6_node *fn,
 					 &rt->fib6_siblings, fib6_siblings)
 			sibling->fib6_nsiblings--;
 		rt->fib6_nsiblings = 0;
-		list_del_init(&rt->fib6_siblings);
+		list_del_rcu(&rt->fib6_siblings);
 		rt6_multipath_rebalance(next_sibling);
 	}
 
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index f41f9232857c102404f76e7dd03a9d8c93475533..abd3292d7b606fcebd74a3397e63c4fb5989710c 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -413,8 +413,8 @@ void fib6_select_path(const struct net *net, struct fib6_result *res,
 		      struct flowi6 *fl6, int oif, bool have_oif_match,
 		      const struct sk_buff *skb, int strict)
 {
-	struct fib6_info *sibling, *next_sibling;
 	struct fib6_info *match = res->f6i;
+	struct fib6_info *sibling;
 
 	if (!match->nh && (!match->fib6_nsiblings || have_oif_match))
 		goto out;
@@ -437,8 +437,8 @@ void fib6_select_path(const struct net *net, struct fib6_result *res,
 	if (fl6->mp_hash <= atomic_read(&match->fib6_nh->fib_nh_upper_bound))
 		goto out;
 
-	list_for_each_entry_safe(sibling, next_sibling, &match->fib6_siblings,
-				 fib6_siblings) {
+	list_for_each_entry_rcu(sibling, &match->fib6_siblings,
+				fib6_siblings) {
 		const struct fib6_nh *nh = sibling->fib6_nh;
 		int nh_upper_bound;
 
@@ -2644,10 +2644,10 @@ static void ip6_negative_advice(struct sock *sk,
 	if (rt->rt6i_flags & RTF_CACHE) {
 		rcu_read_lock();
 		if (rt6_check_expired(rt)) {
-			/* counteract the dst_release() in sk_dst_reset() */
-			dst_hold(dst);
+			/* rt/dst can not be destroyed yet,
+			 * because of rcu_read_lock()
+			 */
 			sk_dst_reset(sk);
-
 			rt6_remove_exception_rt(rt);
 		}
 		rcu_read_unlock();
@@ -5083,14 +5083,18 @@ static void ip6_route_mpath_notify(struct fib6_info *rt,
 	 * nexthop. Since sibling routes are always added at the end of
 	 * the list, find the first sibling of the last route appended
 	 */
+	rcu_read_lock();
+
 	if ((nlflags & NLM_F_APPEND) && rt_last && rt_last->fib6_nsiblings) {
-		rt = list_first_entry(&rt_last->fib6_siblings,
-				      struct fib6_info,
-				      fib6_siblings);
+		rt = list_first_or_null_rcu(&rt_last->fib6_siblings,
+					    struct fib6_info,
+					    fib6_siblings);
 	}
 
 	if (rt)
 		inet6_rt_notify(RTM_NEWROUTE, rt, info, nlflags);
+
+	rcu_read_unlock();
 }
 
 static bool ip6_route_mpath_should_notify(const struct fib6_info *rt)
@@ -5435,17 +5439,21 @@ static size_t rt6_nlmsg_size(struct fib6_info *f6i)
 		nexthop_for_each_fib6_nh(f6i->nh, rt6_nh_nlmsg_size,
 					 &nexthop_len);
 	} else {
-		struct fib6_info *sibling, *next_sibling;
 		struct fib6_nh *nh = f6i->fib6_nh;
+		struct fib6_info *sibling;
 
 		nexthop_len = 0;
 		if (f6i->fib6_nsiblings) {
 			rt6_nh_nlmsg_size(nh, &nexthop_len);
 
-			list_for_each_entry_safe(sibling, next_sibling,
-						 &f6i->fib6_siblings, fib6_siblings) {
+			rcu_read_lock();
+
+			list_for_each_entry_rcu(sibling, &f6i->fib6_siblings,
+						fib6_siblings) {
 				rt6_nh_nlmsg_size(sibling->fib6_nh, &nexthop_len);
 			}
+
+			rcu_read_unlock();
 		}
 		nexthop_len += lwtunnel_get_encap_size(nh->fib_nh_lws);
 	}
@@ -5605,7 +5613,7 @@ static int rt6_fill_node(struct net *net, struct sk_buff *skb,
 		if (dst->dev && nla_put_u32(skb, RTA_OIF, dst->dev->ifindex))
 			goto nla_put_failure;
 	} else if (rt->fib6_nsiblings) {
-		struct fib6_info *sibling, *next_sibling;
+		struct fib6_info *sibling;
 		struct nlattr *mp;
 
 		mp = nla_nest_start_noflag(skb, RTA_MULTIPATH);
@@ -5617,14 +5625,21 @@ static int rt6_fill_node(struct net *net, struct sk_buff *skb,
 				    0) < 0)
 			goto nla_put_failure;
 
-		list_for_each_entry_safe(sibling, next_sibling,
-					 &rt->fib6_siblings, fib6_siblings) {
+		rcu_read_lock();
+
+		list_for_each_entry_rcu(sibling, &rt->fib6_siblings,
+					fib6_siblings) {
 			if (fib_add_nexthop(skb, &sibling->fib6_nh->nh_common,
 					    sibling->fib6_nh->fib_nh_weight,
-					    AF_INET6, 0) < 0)
+					    AF_INET6, 0) < 0) {
+				rcu_read_unlock();
+
 				goto nla_put_failure;
+			}
 		}
 
+		rcu_read_unlock();
+
 		nla_nest_end(skb, mp);
 	} else if (rt->nh) {
 		if (nla_put_u32(skb, RTA_NH_ID, rt->nh->id))
@@ -6059,7 +6074,7 @@ void inet6_rt_notify(int event, struct fib6_info *rt, struct nl_info *info,
 	err = -ENOBUFS;
 	seq = info->nlh ? info->nlh->nlmsg_seq : 0;
 
-	skb = nlmsg_new(rt6_nlmsg_size(rt), gfp_any());
+	skb = nlmsg_new(rt6_nlmsg_size(rt), GFP_ATOMIC);
 	if (!skb)
 		goto errout;
 
@@ -6072,7 +6087,7 @@ void inet6_rt_notify(int event, struct fib6_info *rt, struct nl_info *info,
 		goto errout;
 	}
 	rtnl_notify(skb, net, info->portid, RTNLGRP_IPV6_ROUTE,
-		    info->nlh, gfp_any());
+		    info->nlh, GFP_ATOMIC);
 	return;
 errout:
 	if (err < 0)
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index e31c2b8e0e58e2f4ba1ba0b821e62ff4088ca324..57e99d98bdce524328633258a5beb43271863aea 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -3321,18 +3321,18 @@ static int packet_create(struct net *net, struct socket *sock, int protocol,
 	if (sock->type == SOCK_PACKET)
 		sock->ops = &packet_ops_spkt;
 
+	po = pkt_sk(sk);
+	err = packet_alloc_pending(po);
+	if (err)
+		goto out_sk_free;
+
 	sock_init_data(sock, sk);
 
-	po = pkt_sk(sk);
 	init_completion(&po->skb_completion);
 	sk->sk_family = PF_PACKET;
 	po->num = proto;
 	po->xmit = dev_queue_xmit;
 
-	err = packet_alloc_pending(po);
-	if (err)
-		goto out2;
-
 	packet_cached_dev_reset(po);
 
 	sk->sk_destruct = packet_sock_destruct;
@@ -3367,7 +3367,7 @@ static int packet_create(struct net *net, struct socket *sock, int protocol,
 	preempt_enable();
 
 	return 0;
-out2:
+out_sk_free:
 	sk_free(sk);
 out:
 	return err;
diff --git a/net/sched/sch_netem.c b/net/sched/sch_netem.c
index 08aaa6efc62c86033eeecbcacbc01f85ecd6da0e..c6416cf0fcb0fd53a7d0d29eeb07453a27a6bf38 100644
--- a/net/sched/sch_netem.c
+++ b/net/sched/sch_netem.c
@@ -77,6 +77,8 @@ struct netem_sched_data {
 	struct sk_buff	*t_head;
 	struct sk_buff	*t_tail;
 
+	u32 t_len;
+
 	/* optional qdisc for classful handling (NULL at netem init) */
 	struct Qdisc	*qdisc;
 
@@ -373,6 +375,7 @@ static void tfifo_reset(struct Qdisc *sch)
 	rtnl_kfree_skbs(q->t_head, q->t_tail);
 	q->t_head = NULL;
 	q->t_tail = NULL;
+	q->t_len = 0;
 }
 
 static void tfifo_enqueue(struct sk_buff *nskb, struct Qdisc *sch)
@@ -402,6 +405,7 @@ static void tfifo_enqueue(struct sk_buff *nskb, struct Qdisc *sch)
 		rb_link_node(&nskb->rbnode, parent, p);
 		rb_insert_color(&nskb->rbnode, &q->t_root);
 	}
+	q->t_len++;
 	sch->q.qlen++;
 }
 
@@ -517,7 +521,7 @@ static int netem_enqueue(struct sk_buff *skb, struct Qdisc *sch,
 			1<<(prandom_u32() % 8);
 	}
 
-	if (unlikely(sch->q.qlen >= sch->limit)) {
+	if (unlikely(q->t_len >= sch->limit)) {
 		/* re-link segs, so that qdisc_drop_all() frees them all */
 		skb->next = segs;
 		qdisc_drop_all(skb, sch, to_free);
@@ -681,8 +685,8 @@ static struct sk_buff *netem_dequeue(struct Qdisc *sch)
 tfifo_dequeue:
 	skb = __qdisc_dequeue_head(&sch->q);
 	if (skb) {
-		qdisc_qstats_backlog_dec(sch, skb);
 deliver:
+		qdisc_qstats_backlog_dec(sch, skb);
 		qdisc_bstats_update(sch, skb);
 		return skb;
 	}
@@ -698,8 +702,7 @@ static struct sk_buff *netem_dequeue(struct Qdisc *sch)
 
 		if (time_to_send <= now && q->slot.slot_next <= now) {
 			netem_erase_head(q, skb);
-			sch->q.qlen--;
-			qdisc_qstats_backlog_dec(sch, skb);
+			q->t_len--;
 			skb->next = NULL;
 			skb->prev = NULL;
 			/* skb->dev shares skb->rbnode area,
@@ -722,21 +725,25 @@ static struct sk_buff *netem_dequeue(struct Qdisc *sch)
 
 				err = qdisc_enqueue(skb, q->qdisc, &to_free);
 				kfree_skb_list(to_free);
-				if (err != NET_XMIT_SUCCESS &&
-				    net_xmit_drop_count(err)) {
-					qdisc_qstats_drop(sch);
-					qdisc_tree_reduce_backlog(sch, 1,
-								  pkt_len);
+				if (err != NET_XMIT_SUCCESS) {
+					if (net_xmit_drop_count(err))
+						qdisc_qstats_drop(sch);
+					qdisc_tree_reduce_backlog(sch, 1, pkt_len);
+					sch->qstats.backlog -= pkt_len;
+					sch->q.qlen--;
 				}
 				goto tfifo_dequeue;
 			}
+			sch->q.qlen--;
 			goto deliver;
 		}
 
 		if (q->qdisc) {
 			skb = q->qdisc->ops->dequeue(q->qdisc);
-			if (skb)
+			if (skb) {
+				sch->q.qlen--;
 				goto deliver;
+			}
 		}
 
 		qdisc_watchdog_schedule_ns(&q->watchdog,
@@ -746,8 +753,10 @@ static struct sk_buff *netem_dequeue(struct Qdisc *sch)
 
 	if (q->qdisc) {
 		skb = q->qdisc->ops->dequeue(q->qdisc);
-		if (skb)
+		if (skb) {
+			sch->q.qlen--;
 			goto deliver;
+		}
 	}
 	return NULL;
 }
diff --git a/net/sunrpc/cache.c b/net/sunrpc/cache.c
index 20c93b68505e6d21481fe8affa6adfbd2ad7bf49..522e43f66ecd05c855ac97c36ffb0916adf1d858 100644
--- a/net/sunrpc/cache.c
+++ b/net/sunrpc/cache.c
@@ -1434,7 +1434,9 @@ static int c_show(struct seq_file *m, void *p)
 		seq_printf(m, "# expiry=%lld refcnt=%d flags=%lx\n",
 			   convert_to_wallclock(cp->expiry_time),
 			   kref_read(&cp->ref), cp->flags);
-	cache_get(cp);
+	if (!cache_get_rcu(cp))
+		return 0;
+
 	if (cache_check(cd, cp, NULL))
 		/* cache_check does a cache_put on failure */
 		seq_puts(m, "# ");
diff --git a/net/sunrpc/svcsock.c b/net/sunrpc/svcsock.c
index 3d5ee042c50155f4ea6b54a9d1c1aa47cc27f6a4..9b9ac36e243858e6ac2c9e294dee9e6f0dd36d00 100644
--- a/net/sunrpc/svcsock.c
+++ b/net/sunrpc/svcsock.c
@@ -1474,6 +1474,11 @@ static struct svc_xprt *svc_create_socket(struct svc_serv *serv,
 	newlen = error;
 
 	if (protocol == IPPROTO_TCP) {
+		sock->sk->sk_net_refcnt = 1;
+		get_net(net);
+#ifdef CONFIG_PROC_FS
+		this_cpu_add(*net->core.sock_inuse, 1);
+#endif
 		if ((error = kernel_listen(sock, 64)) < 0)
 			goto bummer;
 	}
diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c
index ae5b5380f0f03cd707bc5630bba8833d9b880c80..855d4a09581ac84bc178766205422cdb4a8ea3d6 100644
--- a/net/sunrpc/xprtsock.c
+++ b/net/sunrpc/xprtsock.c
@@ -1134,6 +1134,7 @@ static void xs_sock_reset_state_flags(struct rpc_xprt *xprt)
 	clear_bit(XPRT_SOCK_WAKE_ERROR, &transport->sock_state);
 	clear_bit(XPRT_SOCK_WAKE_WRITE, &transport->sock_state);
 	clear_bit(XPRT_SOCK_WAKE_DISCONNECT, &transport->sock_state);
+	clear_bit(XPRT_SOCK_UPD_TIMEOUT, &transport->sock_state);
 }
 
 static void xs_run_error_worker(struct sock_xprt *transport, unsigned int nr)
@@ -1834,6 +1835,14 @@ static struct socket *xs_create_sock(struct rpc_xprt *xprt,
 		goto out;
 	}
 
+	if (protocol == IPPROTO_TCP) {
+		sock->sk->sk_net_refcnt = 1;
+		get_net(xprt->xprt_net);
+#ifdef CONFIG_PROC_FS
+		this_cpu_add(*xprt->xprt_net->core.sock_inuse, 1);
+#endif
+	}
+
 	filp = sock_alloc_file(sock, O_NONBLOCK, NULL);
 	if (IS_ERR(filp))
 		return ERR_CAST(filp);
diff --git a/net/wireless/util.c b/net/wireless/util.c
index 4b32e85c2d9a1be266f78f14acf7584b58edabb2..5177fd63b1b82d6f3144a94259cacea0dd6160ac 100644
--- a/net/wireless/util.c
+++ b/net/wireless/util.c
@@ -751,24 +751,27 @@ void ieee80211_amsdu_to_8023s(struct sk_buff *skb, struct sk_buff_head *list,
 	struct sk_buff *frame = NULL;
 	u16 ethertype;
 	u8 *payload;
-	int offset = 0, remaining;
+	int offset = 0;
 	struct ethhdr eth;
 	bool reuse_frag = skb->head_frag && !skb_has_frag_list(skb);
 	bool reuse_skb = false;
 	bool last = false;
 
 	while (!last) {
+		int remaining = skb->len - offset;
 		unsigned int subframe_len;
 		int len;
 		u8 padding;
 
+		if (sizeof(eth) > remaining)
+			goto purge;
+
 		skb_copy_bits(skb, offset, &eth, sizeof(eth));
 		len = ntohs(eth.h_proto);
 		subframe_len = sizeof(struct ethhdr) + len;
 		padding = (4 - subframe_len) & 0x3;
 
 		/* the last MSDU has no padding */
-		remaining = skb->len - offset;
 		if (subframe_len > remaining)
 			goto purge;
 		/* mitigate A-MSDU aggregation injection attacks */
diff --git a/security/selinux/ss/services.c b/security/selinux/ss/services.c
index 3db8bd2158d9b6b0c5145e3f500cc5041ef97a0a..128dfcf10b8272d55a5b372c1ab5b76d5c627761 100644
--- a/security/selinux/ss/services.c
+++ b/security/selinux/ss/services.c
@@ -970,7 +970,10 @@ void services_compute_xperms_decision(struct extended_perms_decision *xpermd,
 					xpermd->driver))
 			return;
 	} else {
-		BUG();
+		pr_warn_once(
+			"SELinux: unknown extended permission (%u) will be ignored\n",
+			node->datum.u.xperms->specified);
+		return;
 	}
 
 	if (node->key.specified == AVTAB_XPERMS_ALLOWED) {
@@ -1007,7 +1010,8 @@ void services_compute_xperms_decision(struct extended_perms_decision *xpermd,
 					node->datum.u.xperms->perms.p[i];
 		}
 	} else {
-		BUG();
+		pr_warn_once("SELinux: unknown specified key (%u)\n",
+			     node->key.specified);
 	}
 }
 
diff --git a/tools/testing/selftests/net/Makefile b/tools/testing/selftests/net/Makefile
index ef352477cac6bd5fad636a4b9c5b832361fcda99..bbd147404351985851572c7a252e0df83df8c9f8 100644
--- a/tools/testing/selftests/net/Makefile
+++ b/tools/testing/selftests/net/Makefile
@@ -21,6 +21,7 @@ TEST_PROGS += rxtimestamp.sh
 TEST_PROGS += devlink_port_split.py
 TEST_PROGS += drop_monitor_tests.sh
 TEST_PROGS += vrf_route_leaking.sh
+TEST_PROGS += ipv6_route_update_soft_lockup.sh
 TEST_PROGS_EXTENDED := in_netns.sh
 TEST_GEN_FILES =  socket nettest
 TEST_GEN_FILES += psock_fanout psock_tpacket msg_zerocopy reuseport_addr_any
diff --git a/tools/testing/selftests/net/ipv6_route_update_soft_lockup.sh b/tools/testing/selftests/net/ipv6_route_update_soft_lockup.sh
new file mode 100755
index 0000000000000000000000000000000000000000..a6b2b1f9c641c9af25e8ebc97de5fd22eecfc325
--- /dev/null
+++ b/tools/testing/selftests/net/ipv6_route_update_soft_lockup.sh
@@ -0,0 +1,262 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+#
+# Testing for potential kernel soft lockup during IPv6 routing table
+# refresh under heavy outgoing IPv6 traffic. If a kernel soft lockup
+# occurs, a kernel panic will be triggered to prevent associated issues.
+#
+#
+#                            Test Environment Layout
+#
+# ┌----------------┐                                         ┌----------------┐
+# |     SOURCE_NS  |                                         |     SINK_NS    |
+# |    NAMESPACE   |                                         |    NAMESPACE   |
+# |(iperf3 clients)|                                         |(iperf3 servers)|
+# |                |                                         |                |
+# |                |                                         |                |
+# |    ┌-----------|                             nexthops    |---------┐      |
+# |    |veth_source|<--------------------------------------->|veth_sink|<┐    |
+# |    └-----------|2001:0DB8:1::0:1/96  2001:0DB8:1::1:1/96 |---------┘ |    |
+# |                |         ^           2001:0DB8:1::1:2/96 |           |    |
+# |                |         .                   .           |       fwd |    |
+# |  ┌---------┐   |         .                   .           |           |    |
+# |  |   IPv6  |   |         .                   .           |           V    |
+# |  | routing |   |         .           2001:0DB8:1::1:80/96|        ┌-----┐ |
+# |  |  table  |   |         .                               |        | lo  | |
+# |  | nexthop |   |         .                               └--------┴-----┴-┘
+# |  | update  |   |         ............................> 2001:0DB8:2::1:1/128
+# |  └-------- ┘   |
+# └----------------┘
+#
+# The test script sets up two network namespaces, source_ns and sink_ns,
+# connected via a veth link. Within source_ns, it continuously updates the
+# IPv6 routing table by flushing and inserting IPV6_NEXTHOP_ADDR_COUNT nexthop
+# IPs destined for SINK_LOOPBACK_IP_ADDR in sink_ns. This refresh occurs at a
+# rate of 1/ROUTING_TABLE_REFRESH_PERIOD per second for TEST_DURATION seconds.
+#
+# Simultaneously, multiple iperf3 clients within source_ns generate heavy
+# outgoing IPv6 traffic. Each client is assigned a unique port number starting
+# at 5000 and incrementing sequentially. Each client targets a unique iperf3
+# server running in sink_ns, connected to the SINK_LOOPBACK_IFACE interface
+# using the same port number.
+#
+# The number of iperf3 servers and clients is set to half of the total
+# available cores on each machine.
+#
+# NOTE: We have tested this script on machines with various CPU specifications,
+# ranging from lower to higher performance as listed below. The test script
+# effectively triggered a kernel soft lockup on machines running an unpatched
+# kernel in under a minute:
+#
+# - 1x Intel Xeon E-2278G 8-Core Processor @ 3.40GHz
+# - 1x Intel Xeon E-2378G Processor 8-Core @ 2.80GHz
+# - 1x AMD EPYC 7401P 24-Core Processor @ 2.00GHz
+# - 1x AMD EPYC 7402P 24-Core Processor @ 2.80GHz
+# - 2x Intel Xeon Gold 5120 14-Core Processor @ 2.20GHz
+# - 1x Ampere Altra Q80-30 80-Core Processor @ 3.00GHz
+# - 2x Intel Xeon Gold 5120 14-Core Processor @ 2.20GHz
+# - 2x Intel Xeon Silver 4214 24-Core Processor @ 2.20GHz
+# - 1x AMD EPYC 7502P 32-Core @ 2.50GHz
+# - 1x Intel Xeon Gold 6314U 32-Core Processor @ 2.30GHz
+# - 2x Intel Xeon Gold 6338 32-Core Processor @ 2.00GHz
+#
+# On less performant machines, you may need to increase the TEST_DURATION
+# parameter to enhance the likelihood of encountering a race condition leading
+# to a kernel soft lockup and avoid a false negative result.
+#
+# NOTE: The test may not produce the expected result in virtualized
+# environments (e.g., qemu) due to differences in timing and CPU handling,
+# which can affect the conditions needed to trigger a soft lockup.
+
+source lib.sh
+source net_helper.sh
+
+TEST_DURATION=300
+ROUTING_TABLE_REFRESH_PERIOD=0.01
+
+IPERF3_BITRATE="300m"
+
+
+IPV6_NEXTHOP_ADDR_COUNT="128"
+IPV6_NEXTHOP_ADDR_MASK="96"
+IPV6_NEXTHOP_PREFIX="2001:0DB8:1"
+
+
+SOURCE_TEST_IFACE="veth_source"
+SOURCE_TEST_IP_ADDR="2001:0DB8:1::0:1/96"
+
+SINK_TEST_IFACE="veth_sink"
+# ${SINK_TEST_IFACE} is populated with the following range of IPv6 addresses:
+# 2001:0DB8:1::1:1  to 2001:0DB8:1::1:${IPV6_NEXTHOP_ADDR_COUNT}
+SINK_LOOPBACK_IFACE="lo"
+SINK_LOOPBACK_IP_MASK="128"
+SINK_LOOPBACK_IP_ADDR="2001:0DB8:2::1:1"
+
+nexthop_ip_list=""
+termination_signal=""
+kernel_softlokup_panic_prev_val=""
+
+terminate_ns_processes_by_pattern() {
+	local ns=$1
+	local pattern=$2
+
+	for pid in $(ip netns pids ${ns}); do
+		[ -e /proc/$pid/cmdline ] && grep -qe "${pattern}" /proc/$pid/cmdline && kill -9 $pid
+	done
+}
+
+cleanup() {
+	echo "info: cleaning up namespaces and terminating all processes within them..."
+
+
+	# Terminate iperf3 instances running in the source_ns. To avoid race
+	# conditions, first iterate over the PIDs and terminate those
+	# associated with the bash shells running the
+	# `while true; do iperf3 -c ...; done` loops. In a second iteration,
+	# terminate the individual `iperf3 -c ...` instances.
+	terminate_ns_processes_by_pattern ${source_ns} while
+	terminate_ns_processes_by_pattern ${source_ns} iperf3
+
+	# Repeat the same process for sink_ns
+	terminate_ns_processes_by_pattern ${sink_ns} while
+	terminate_ns_processes_by_pattern ${sink_ns} iperf3
+
+	# Check if any iperf3 instances are still running. This could happen
+	# if a core has entered an infinite loop and the timeout for detecting
+	# the soft lockup has not expired, but either the test interval has
+	# already elapsed or the test was terminated manually (e.g., with ^C)
+	for pid in $(ip netns pids ${source_ns}); do
+		if [ -e /proc/$pid/cmdline ] && grep -qe 'iperf3' /proc/$pid/cmdline; then
+			echo "FAIL: unable to terminate some iperf3 instances. Soft lockup is underway. A kernel panic is on the way!"
+			exit ${ksft_fail}
+		fi
+	done
+
+	if [ "$termination_signal" == "SIGINT" ]; then
+		echo "SKIP: Termination due to ^C (SIGINT)"
+	elif [ "$termination_signal" == "SIGALRM" ]; then
+		echo "PASS: No kernel soft lockup occurred during this ${TEST_DURATION} second test"
+	fi
+
+	cleanup_ns ${source_ns} ${sink_ns}
+
+	sysctl -qw kernel.softlockup_panic=${kernel_softlokup_panic_prev_val}
+}
+
+setup_prepare() {
+	setup_ns source_ns sink_ns
+
+	ip -n ${source_ns} link add name ${SOURCE_TEST_IFACE} type veth peer name ${SINK_TEST_IFACE} netns ${sink_ns}
+
+	# Setting up the Source namespace
+	ip -n ${source_ns} addr add ${SOURCE_TEST_IP_ADDR} dev ${SOURCE_TEST_IFACE}
+	ip -n ${source_ns} link set dev ${SOURCE_TEST_IFACE} qlen 10000
+	ip -n ${source_ns} link set dev ${SOURCE_TEST_IFACE} up
+	ip netns exec ${source_ns} sysctl -qw net.ipv6.fib_multipath_hash_policy=1
+
+	# Setting up the Sink namespace
+	ip -n ${sink_ns} addr add ${SINK_LOOPBACK_IP_ADDR}/${SINK_LOOPBACK_IP_MASK} dev ${SINK_LOOPBACK_IFACE}
+	ip -n ${sink_ns} link set dev ${SINK_LOOPBACK_IFACE} up
+	ip netns exec ${sink_ns} sysctl -qw net.ipv6.conf.${SINK_LOOPBACK_IFACE}.forwarding=1
+
+	ip -n ${sink_ns} link set ${SINK_TEST_IFACE} up
+	ip netns exec ${sink_ns} sysctl -qw net.ipv6.conf.${SINK_TEST_IFACE}.forwarding=1
+
+
+	# Populate nexthop IPv6 addresses on the test interface in the sink_ns
+	echo "info: populating ${IPV6_NEXTHOP_ADDR_COUNT} IPv6 addresses on the ${SINK_TEST_IFACE} interface ..."
+	for IP in $(seq 1 ${IPV6_NEXTHOP_ADDR_COUNT}); do
+		ip -n ${sink_ns} addr add ${IPV6_NEXTHOP_PREFIX}::$(printf "1:%x" "${IP}")/${IPV6_NEXTHOP_ADDR_MASK} dev ${SINK_TEST_IFACE};
+	done
+
+	# Preparing list of nexthops
+	for IP in $(seq 1 ${IPV6_NEXTHOP_ADDR_COUNT}); do
+		nexthop_ip_list=$nexthop_ip_list" nexthop via ${IPV6_NEXTHOP_PREFIX}::$(printf "1:%x" $IP) dev ${SOURCE_TEST_IFACE} weight 1"
+	done
+}
+
+
+test_soft_lockup_during_routing_table_refresh() {
+	# Start num_of_iperf_servers iperf3 servers in the sink_ns namespace,
+	# each listening on ports starting at 5001 and incrementing
+	# sequentially. Since iperf3 instances may terminate unexpectedly, a
+	# while loop is used to automatically restart them in such cases.
+	echo "info: starting ${num_of_iperf_servers} iperf3 servers in the sink_ns namespace ..."
+	for i in $(seq 1 ${num_of_iperf_servers}); do
+		cmd="iperf3 --bind ${SINK_LOOPBACK_IP_ADDR} -s -p $(printf '5%03d' ${i}) --rcv-timeout 200 &>/dev/null"
+		ip netns exec ${sink_ns} bash -c "while true; do ${cmd}; done &" &>/dev/null
+	done
+
+	# Wait for the iperf3 servers to be ready
+	for i in $(seq ${num_of_iperf_servers}); do
+		port=$(printf '5%03d' ${i});
+		wait_local_port_listen ${sink_ns} ${port} tcp
+	done
+
+	# Continuously refresh the routing table in the background within
+	# the source_ns namespace
+	ip netns exec ${source_ns} bash -c "
+		while \$(ip netns list | grep -q ${source_ns}); do
+			ip -6 route add ${SINK_LOOPBACK_IP_ADDR}/${SINK_LOOPBACK_IP_MASK} ${nexthop_ip_list};
+			sleep ${ROUTING_TABLE_REFRESH_PERIOD};
+			ip -6 route delete ${SINK_LOOPBACK_IP_ADDR}/${SINK_LOOPBACK_IP_MASK};
+		done &"
+
+	# Start num_of_iperf_servers iperf3 clients in the source_ns namespace,
+	# each sending TCP traffic on sequential ports starting at 5001.
+	# Since iperf3 instances may terminate unexpectedly (e.g., if the route
+	# to the server is deleted in the background during a route refresh), a
+	# while loop is used to automatically restart them in such cases.
+	echo "info: starting ${num_of_iperf_servers} iperf3 clients in the source_ns namespace ..."
+	for i in $(seq 1 ${num_of_iperf_servers}); do
+		cmd="iperf3 -c ${SINK_LOOPBACK_IP_ADDR} -p $(printf '5%03d' ${i}) --length 64 --bitrate ${IPERF3_BITRATE} -t 0 --connect-timeout 150 &>/dev/null"
+		ip netns exec ${source_ns} bash -c "while true; do ${cmd}; done &" &>/dev/null
+	done
+
+	echo "info: IPv6 routing table is being updated at the rate of $(echo "1/${ROUTING_TABLE_REFRESH_PERIOD}" | bc)/s for ${TEST_DURATION} seconds ..."
+	echo "info: A kernel soft lockup, if detected, results in a kernel panic!"
+
+	wait
+}
+
+# Make sure 'iperf3' is installed, skip the test otherwise
+if [ ! -x "$(command -v "iperf3")" ]; then
+	echo "SKIP: 'iperf3' is not installed. Skipping the test."
+	exit ${ksft_skip}
+fi
+
+# Determine the number of cores on the machine
+num_of_iperf_servers=$(( $(nproc)/2 ))
+
+# Check if we are running on a multi-core machine, skip the test otherwise
+if [ "${num_of_iperf_servers}" -eq 0 ]; then
+	echo "SKIP: This test is not valid on a single core machine!"
+	exit ${ksft_skip}
+fi
+
+# Since the kernel soft lockup we're testing causes at least one core to enter
+# an infinite loop, destabilizing the host and likely affecting subsequent
+# tests, we trigger a kernel panic instead of reporting a failure and
+# continuing
+kernel_softlokup_panic_prev_val=$(sysctl -n kernel.softlockup_panic)
+sysctl -qw kernel.softlockup_panic=1
+
+handle_sigint() {
+	termination_signal="SIGINT"
+	cleanup
+	exit ${ksft_skip}
+}
+
+handle_sigalrm() {
+	termination_signal="SIGALRM"
+	cleanup
+	exit ${ksft_pass}
+}
+
+trap handle_sigint SIGINT
+trap handle_sigalrm SIGALRM
+
+(sleep ${TEST_DURATION} && kill -s SIGALRM $$)&
+
+setup_prepare
+test_soft_lockup_during_routing_table_refresh