Re: Linux 4.14.219

[Greg Kroah-Hartman <gregkh@linuxfoundation.org>]

diff --git a/Makefile b/Makefile
index 494420ad33a1..f7f11304776b 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0
 VERSION = 4
 PATCHLEVEL = 14
-SUBLEVEL = 218
+SUBLEVEL = 219
 EXTRAVERSION =
 NAME = Petit Gorille
 
diff --git a/arch/arm/boot/dts/imx6qdl-gw52xx.dtsi b/arch/arm/boot/dts/imx6qdl-gw52xx.dtsi
index 115d706228ef..95aa680e9256 100644
--- a/arch/arm/boot/dts/imx6qdl-gw52xx.dtsi
+++ b/arch/arm/boot/dts/imx6qdl-gw52xx.dtsi
@@ -278,7 +278,7 @@
 
 			/* VDD_AUD_1P8: Audio codec */
 			reg_aud_1p8v: ldo3 {
-				regulator-name = "vdd1p8";
+				regulator-name = "vdd1p8a";
 				regulator-min-microvolt = <1800000>;
 				regulator-max-microvolt = <1800000>;
 				regulator-boot-on;
diff --git a/arch/arm/mach-imx/suspend-imx6.S b/arch/arm/mach-imx/suspend-imx6.S
index 7d84b617af48..99d2e296082c 100644
--- a/arch/arm/mach-imx/suspend-imx6.S
+++ b/arch/arm/mach-imx/suspend-imx6.S
@@ -73,6 +73,7 @@
 #define MX6Q_CCM_CCR	0x0
 
 	.align 3
+	.arm
 
 	.macro  sync_l2_cache
 
diff --git a/arch/x86/entry/entry_64_compat.S b/arch/x86/entry/entry_64_compat.S
index 364ea4a207be..304e3daf82dd 100644
--- a/arch/x86/entry/entry_64_compat.S
+++ b/arch/x86/entry/entry_64_compat.S
@@ -357,13 +357,13 @@ ENTRY(entry_INT80_compat)
 	pushq	%rdx			/* pt_regs->dx */
 	pushq	%rcx			/* pt_regs->cx */
 	pushq	$-ENOSYS		/* pt_regs->ax */
-	pushq   $0			/* pt_regs->r8  = 0 */
+	pushq   %r8			/* pt_regs->r8 */
 	xorl	%r8d, %r8d		/* nospec   r8 */
-	pushq   $0			/* pt_regs->r9  = 0 */
+	pushq   %r9			/* pt_regs->r9 */
 	xorl	%r9d, %r9d		/* nospec   r9 */
-	pushq   $0			/* pt_regs->r10 = 0 */
+	pushq   %r10			/* pt_regs->r10*/
 	xorl	%r10d, %r10d		/* nospec   r10 */
-	pushq   $0			/* pt_regs->r11 = 0 */
+	pushq   %r11			/* pt_regs->r11 */
 	xorl	%r11d, %r11d		/* nospec   r11 */
 	pushq   %rbx                    /* pt_regs->rbx */
 	xorl	%ebx, %ebx		/* nospec   rbx */
diff --git a/arch/x86/kvm/pmu_intel.c b/arch/x86/kvm/pmu_intel.c
index 84ae4dd261ca..cafdaabf062f 100644
--- a/arch/x86/kvm/pmu_intel.c
+++ b/arch/x86/kvm/pmu_intel.c
@@ -29,7 +29,7 @@ static struct kvm_event_hw_type_mapping intel_arch_events[] = {
 	[4] = { 0x2e, 0x41, PERF_COUNT_HW_CACHE_MISSES },
 	[5] = { 0xc4, 0x00, PERF_COUNT_HW_BRANCH_INSTRUCTIONS },
 	[6] = { 0xc5, 0x00, PERF_COUNT_HW_BRANCH_MISSES },
-	[7] = { 0x00, 0x30, PERF_COUNT_HW_REF_CPU_CYCLES },
+	[7] = { 0x00, 0x03, PERF_COUNT_HW_REF_CPU_CYCLES },
 };
 
 /* mapping between fixed pmc index and intel_arch_events array */
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 79fa55de635c..d7ed1fd36eba 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -98,6 +98,7 @@ static u64 __read_mostly efer_reserved_bits = ~((u64)EFER_SCE);
 
 static void update_cr8_intercept(struct kvm_vcpu *vcpu);
 static void process_nmi(struct kvm_vcpu *vcpu);
+static void process_smi(struct kvm_vcpu *vcpu);
 static void enter_smm(struct kvm_vcpu *vcpu);
 static void __kvm_set_rflags(struct kvm_vcpu *vcpu, unsigned long rflags);
 
@@ -3290,6 +3291,10 @@ static void kvm_vcpu_ioctl_x86_get_vcpu_events(struct kvm_vcpu *vcpu,
 					       struct kvm_vcpu_events *events)
 {
 	process_nmi(vcpu);
+
+	if (kvm_check_request(KVM_REQ_SMI, vcpu))
+		process_smi(vcpu);
+
 	/*
 	 * FIXME: pass injected and pending separately.  This is only
 	 * needed for nested virtualization, whose state cannot be
diff --git a/drivers/acpi/device_sysfs.c b/drivers/acpi/device_sysfs.c
index 012aa86d4b16..6d7ff5ef702c 100644
--- a/drivers/acpi/device_sysfs.c
+++ b/drivers/acpi/device_sysfs.c
@@ -259,20 +259,12 @@ int __acpi_device_uevent_modalias(struct acpi_device *adev,
 	if (add_uevent_var(env, "MODALIAS="))
 		return -ENOMEM;
 
-	len = create_pnp_modalias(adev, &env->buf[env->buflen - 1],
-				  sizeof(env->buf) - env->buflen);
-	if (len < 0)
-		return len;
-
-	env->buflen += len;
-	if (!adev->data.of_compatible)
-		return 0;
-
-	if (len > 0 && add_uevent_var(env, "MODALIAS="))
-		return -ENOMEM;
-
-	len = create_of_modalias(adev, &env->buf[env->buflen - 1],
-				 sizeof(env->buf) - env->buflen);
+	if (adev->data.of_compatible)
+		len = create_of_modalias(adev, &env->buf[env->buflen - 1],
+					 sizeof(env->buf) - env->buflen);
+	else
+		len = create_pnp_modalias(adev, &env->buf[env->buflen - 1],
+					  sizeof(env->buf) - env->buflen);
 	if (len < 0)
 		return len;
 
diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c
index 70ef826af7f8..826b3877a157 100644
--- a/drivers/block/nbd.c
+++ b/drivers/block/nbd.c
@@ -952,6 +952,12 @@ static int nbd_add_socket(struct nbd_device *nbd, unsigned long arg,
 	if (!sock)
 		return err;
 
+	/*
+	 * We need to make sure we don't get any errant requests while we're
+	 * reallocating the ->socks array.
+	 */
+	blk_mq_freeze_queue(nbd->disk->queue);
+
 	if (!netlink && !nbd->task_setup &&
 	    !test_bit(NBD_BOUND, &config->runtime_flags))
 		nbd->task_setup = current;
@@ -990,10 +996,12 @@ static int nbd_add_socket(struct nbd_device *nbd, unsigned long arg,
 	nsock->cookie = 0;
 	socks[config->num_connections++] = nsock;
 	atomic_inc(&config->live_connections);
+	blk_mq_unfreeze_queue(nbd->disk->queue);
 
 	return 0;
 
 put_socket:
+	blk_mq_unfreeze_queue(nbd->disk->queue);
 	sockfd_put(sock);
 	return err;
 }
diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c
index e6887714fe0a..7ba58c39146f 100644
--- a/drivers/block/xen-blkfront.c
+++ b/drivers/block/xen-blkfront.c
@@ -937,7 +937,8 @@ static void blkif_set_queue_limits(struct blkfront_info *info)
 	if (info->feature_discard) {
 		queue_flag_set_unlocked(QUEUE_FLAG_DISCARD, rq);
 		blk_queue_max_discard_sectors(rq, get_capacity(gd));
-		rq->limits.discard_granularity = info->discard_granularity;
+		rq->limits.discard_granularity = info->discard_granularity ?:
+						 info->physical_sector_size;
 		rq->limits.discard_alignment = info->discard_alignment;
 		if (info->feature_secdiscard)
 			queue_flag_set_unlocked(QUEUE_FLAG_SECERASE, rq);
@@ -2155,19 +2156,12 @@ static void blkfront_closing(struct blkfront_info *info)
 
 static void blkfront_setup_discard(struct blkfront_info *info)
 {
-	int err;
-	unsigned int discard_granularity;
-	unsigned int discard_alignment;
-
 	info->feature_discard = 1;
-	err = xenbus_gather(XBT_NIL, info->xbdev->otherend,
-		"discard-granularity", "%u", &discard_granularity,
-		"discard-alignment", "%u", &discard_alignment,
-		NULL);
-	if (!err) {
-		info->discard_granularity = discard_granularity;
-		info->discard_alignment = discard_alignment;
-	}
+	info->discard_granularity = xenbus_read_unsigned(info->xbdev->otherend,
+							 "discard-granularity",
+							 0);
+	info->discard_alignment = xenbus_read_unsigned(info->xbdev->otherend,
+						       "discard-alignment", 0);
 	info->feature_secdiscard =
 		!!xenbus_read_unsigned(info->xbdev->otherend, "discard-secure",
 				       0);
diff --git a/drivers/infiniband/hw/cxgb4/qp.c b/drivers/infiniband/hw/cxgb4/qp.c
index 24952af51a54..15a867d62d02 100644
--- a/drivers/infiniband/hw/cxgb4/qp.c
+++ b/drivers/infiniband/hw/cxgb4/qp.c
@@ -2117,7 +2117,7 @@ int c4iw_ib_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
 	init_attr->cap.max_send_wr = qhp->attr.sq_num_entries;
 	init_attr->cap.max_recv_wr = qhp->attr.rq_num_entries;
 	init_attr->cap.max_send_sge = qhp->attr.sq_max_sges;
-	init_attr->cap.max_recv_sge = qhp->attr.sq_max_sges;
+	init_attr->cap.max_recv_sge = qhp->attr.rq_max_sges;
 	init_attr->cap.max_inline_data = T4_MAX_SEND_INLINE;
 	init_attr->sq_sig_type = qhp->sq_sig_all ? IB_SIGNAL_ALL_WR : 0;
 	return 0;
diff --git a/drivers/iommu/dmar.c b/drivers/iommu/dmar.c
index 1f527ca60955..ef41579897cb 100644
--- a/drivers/iommu/dmar.c
+++ b/drivers/iommu/dmar.c
@@ -1026,8 +1026,8 @@ static int alloc_iommu(struct dmar_drhd_unit *drhd)
 {
 	struct intel_iommu *iommu;
 	u32 ver, sts;
-	int agaw = 0;
-	int msagaw = 0;
+	int agaw = -1;
+	int msagaw = -1;
 	int err;
 
 	if (!drhd->reg_base_addr) {
@@ -1052,17 +1052,28 @@ static int alloc_iommu(struct dmar_drhd_unit *drhd)
 	}
 
 	err = -EINVAL;
-	agaw = iommu_calculate_agaw(iommu);
-	if (agaw < 0) {
-		pr_err("Cannot get a valid agaw for iommu (seq_id = %d)\n",
-			iommu->seq_id);
-		goto err_unmap;
+	if (cap_sagaw(iommu->cap) == 0) {
+		pr_info("%s: No supported address widths. Not attempting DMA translation.\n",
+			iommu->name);
+		drhd->ignored = 1;
 	}
-	msagaw = iommu_calculate_max_sagaw(iommu);
-	if (msagaw < 0) {
-		pr_err("Cannot get a valid max agaw for iommu (seq_id = %d)\n",
-			iommu->seq_id);
-		goto err_unmap;
+
+	if (!drhd->ignored) {
+		agaw = iommu_calculate_agaw(iommu);
+		if (agaw < 0) {
+			pr_err("Cannot get a valid agaw for iommu (seq_id = %d)\n",
+			       iommu->seq_id);
+			drhd->ignored = 1;
+		}
+	}
+	if (!drhd->ignored) {
+		msagaw = iommu_calculate_max_sagaw(iommu);
+		if (msagaw < 0) {
+			pr_err("Cannot get a valid max agaw for iommu (seq_id = %d)\n",
+			       iommu->seq_id);
+			drhd->ignored = 1;
+			agaw = -1;
+		}
 	}
 	iommu->agaw = agaw;
 	iommu->msagaw = msagaw;
@@ -1089,7 +1100,12 @@ static int alloc_iommu(struct dmar_drhd_unit *drhd)
 
 	raw_spin_lock_init(&iommu->register_lock);
 
-	if (intel_iommu_enabled) {
+	/*
+	 * This is only for hotplug; at boot time intel_iommu_enabled won't
+	 * be set yet. When intel_iommu_init() runs, it registers the units
+	 * present at boot time, then sets intel_iommu_enabled.
+	 */
+	if (intel_iommu_enabled && !drhd->ignored) {
 		err = iommu_device_sysfs_add(&iommu->iommu, NULL,
 					     intel_iommu_groups,
 					     "%s", iommu->name);
@@ -1104,6 +1120,7 @@ static int alloc_iommu(struct dmar_drhd_unit *drhd)
 	}
 
 	drhd->iommu = iommu;
+	iommu->drhd = drhd;
 
 	return 0;
 
@@ -1118,7 +1135,7 @@ static int alloc_iommu(struct dmar_drhd_unit *drhd)
 
 static void free_iommu(struct intel_iommu *iommu)
 {
-	if (intel_iommu_enabled) {
+	if (intel_iommu_enabled && !iommu->drhd->ignored) {
 		iommu_device_unregister(&iommu->iommu);
 		iommu_device_sysfs_remove(&iommu->iommu);
 	}
diff --git a/drivers/leds/led-triggers.c b/drivers/leds/led-triggers.c
index 431123b048a2..573a5a80b23c 100644
--- a/drivers/leds/led-triggers.c
+++ b/drivers/leds/led-triggers.c
@@ -283,14 +283,15 @@ void led_trigger_event(struct led_trigger *trig,
 			enum led_brightness brightness)
 {
 	struct led_classdev *led_cdev;
+	unsigned long flags;
 
 	if (!trig)
 		return;
 
-	read_lock(&trig->leddev_list_lock);
+	read_lock_irqsave(&trig->leddev_list_lock, flags);
 	list_for_each_entry(led_cdev, &trig->led_cdevs, trig_list)
 		led_set_brightness(led_cdev, brightness);
-	read_unlock(&trig->leddev_list_lock);
+	read_unlock_irqrestore(&trig->leddev_list_lock, flags);
 }
 EXPORT_SYMBOL_GPL(led_trigger_event);
 
@@ -301,11 +302,12 @@ static void led_trigger_blink_setup(struct led_trigger *trig,
 			     int invert)
 {
 	struct led_classdev *led_cdev;
+	unsigned long flags;
 
 	if (!trig)
 		return;
 
-	read_lock(&trig->leddev_list_lock);
+	read_lock_irqsave(&trig->leddev_list_lock, flags);
 	list_for_each_entry(led_cdev, &trig->led_cdevs, trig_list) {
 		if (oneshot)
 			led_blink_set_oneshot(led_cdev, delay_on, delay_off,
@@ -313,7 +315,7 @@ static void led_trigger_blink_setup(struct led_trigger *trig,
 		else
 			led_blink_set(led_cdev, delay_on, delay_off);
 	}
-	read_unlock(&trig->leddev_list_lock);
+	read_unlock_irqrestore(&trig->leddev_list_lock, flags);
 }
 
 void led_trigger_blink(struct led_trigger *trig,
diff --git a/drivers/net/can/dev.c b/drivers/net/can/dev.c
index 1025cfd463ec..0ebee99a3e85 100644
--- a/drivers/net/can/dev.c
+++ b/drivers/net/can/dev.c
@@ -1102,7 +1102,7 @@ static int can_fill_info(struct sk_buff *skb, const struct net_device *dev)
 {
 	struct can_priv *priv = netdev_priv(dev);
 	struct can_ctrlmode cm = {.flags = priv->ctrlmode};
-	struct can_berr_counter bec;
+	struct can_berr_counter bec = { };
 	enum can_state state = priv->state;
 
 	if (priv->do_get_state)
diff --git a/drivers/net/team/team.c b/drivers/net/team/team.c
index d36d0882874b..eb2360b64aad 100644
--- a/drivers/net/team/team.c
+++ b/drivers/net/team/team.c
@@ -1002,7 +1002,8 @@ static void __team_compute_features(struct team *team)
 	unsigned int dst_release_flag = IFF_XMIT_DST_RELEASE |
 					IFF_XMIT_DST_RELEASE_PERM;
 
-	list_for_each_entry(port, &team->port_list, list) {
+	rcu_read_lock();
+	list_for_each_entry_rcu(port, &team->port_list, list) {
 		vlan_features = netdev_increment_features(vlan_features,
 					port->dev->vlan_features,
 					TEAM_VLAN_FEATURES);
@@ -1016,6 +1017,7 @@ static void __team_compute_features(struct team *team)
 		if (port->dev->hard_header_len > max_hard_header_len)
 			max_hard_header_len = port->dev->hard_header_len;
 	}
+	rcu_read_unlock();
 
 	team->dev->vlan_features = vlan_features;
 	team->dev->hw_enc_features = enc_features | NETIF_F_GSO_ENCAP_ALL |
@@ -1030,9 +1032,7 @@ static void __team_compute_features(struct team *team)
 
 static void team_compute_features(struct team *team)
 {
-	mutex_lock(&team->lock);
 	__team_compute_features(team);
-	mutex_unlock(&team->lock);
 	netdev_change_features(team->dev);
 }
 
diff --git a/drivers/net/usb/qmi_wwan.c b/drivers/net/usb/qmi_wwan.c
index 6fed2fc4565b..f205ccba27c4 100644
--- a/drivers/net/usb/qmi_wwan.c
+++ b/drivers/net/usb/qmi_wwan.c
@@ -1273,6 +1273,7 @@ static const struct usb_device_id products[] = {
 	{QMI_FIXED_INTF(0x0b3c, 0xc00a, 6)},	/* Olivetti Olicard 160 */
 	{QMI_FIXED_INTF(0x0b3c, 0xc00b, 4)},	/* Olivetti Olicard 500 */
 	{QMI_FIXED_INTF(0x1e2d, 0x0060, 4)},	/* Cinterion PLxx */
+	{QMI_QUIRK_SET_DTR(0x1e2d, 0x006f, 8)}, /* Cinterion PLS83/PLS63 */
 	{QMI_FIXED_INTF(0x1e2d, 0x0053, 4)},	/* Cinterion PHxx,PXxx */
 	{QMI_FIXED_INTF(0x1e2d, 0x0063, 10)},	/* Cinterion ALASxx (1 RmNet) */
 	{QMI_FIXED_INTF(0x1e2d, 0x0082, 4)},	/* Cinterion PHxx,PXxx (2 RmNet) */
diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/trans.c b/drivers/net/wireless/intel/iwlwifi/pcie/trans.c
index 910edd034fe3..7bfddce582ad 100644
--- a/drivers/net/wireless/intel/iwlwifi/pcie/trans.c
+++ b/drivers/net/wireless/intel/iwlwifi/pcie/trans.c
@@ -1932,7 +1932,8 @@ static int iwl_trans_pcie_read_mem(struct iwl_trans *trans, u32 addr,
 
 	while (offs < dwords) {
 		/* limit the time we spin here under lock to 1/2s */
-		ktime_t timeout = ktime_add_us(ktime_get(), 500 * USEC_PER_MSEC);
+		unsigned long end = jiffies + HZ / 2;
+		bool resched = false;
 
 		if (iwl_trans_grab_nic_access(trans, &flags)) {
 			iwl_write32(trans, HBUS_TARG_MEM_RADDR,
@@ -1943,14 +1944,15 @@ static int iwl_trans_pcie_read_mem(struct iwl_trans *trans, u32 addr,
 							HBUS_TARG_MEM_RDAT);
 				offs++;
 
-				/* calling ktime_get is expensive so
-				 * do it once in 128 reads
-				 */
-				if (offs % 128 == 0 && ktime_after(ktime_get(),
-								   timeout))
+				if (time_after(jiffies, end)) {
+					resched = true;
 					break;
+				}
 			}
 			iwl_trans_release_nic_access(trans, &flags);
+
+			if (resched)
+				cond_resched();
 		} else {
 			return -EBUSY;
 		}
diff --git a/drivers/net/wireless/mediatek/mt7601u/dma.c b/drivers/net/wireless/mediatek/mt7601u/dma.c
index 47cebb2ec05c..5aacabd32923 100644
--- a/drivers/net/wireless/mediatek/mt7601u/dma.c
+++ b/drivers/net/wireless/mediatek/mt7601u/dma.c
@@ -160,8 +160,7 @@ mt7601u_rx_process_entry(struct mt7601u_dev *dev, struct mt7601u_dma_buf_rx *e)
 
 	if (new_p) {
 		/* we have one extra ref from the allocator */
-		__free_pages(e->p, MT_RX_ORDER);
-
+		put_page(e->p);
 		e->p = new_p;
 	}
 }
@@ -318,7 +317,6 @@ static int mt7601u_dma_submit_tx(struct mt7601u_dev *dev,
 	}
 
 	e = &q->e[q->end];
-	e->skb = skb;
 	usb_fill_bulk_urb(e->urb, usb_dev, snd_pipe, skb->data, skb->len,
 			  mt7601u_complete_tx, q);
 	ret = usb_submit_urb(e->urb, GFP_ATOMIC);
@@ -336,6 +334,7 @@ static int mt7601u_dma_submit_tx(struct mt7601u_dev *dev,
 
 	q->end = (q->end + 1) % q->entries;
 	q->used++;
+	e->skb = skb;
 
 	if (q->used >= q->entries)
 		ieee80211_stop_queue(dev->hw, skb_get_queue_mapping(skb));
diff --git a/drivers/soc/atmel/soc.c b/drivers/soc/atmel/soc.c
index c1363c83c352..c5e713dd1016 100644
--- a/drivers/soc/atmel/soc.c
+++ b/drivers/soc/atmel/soc.c
@@ -246,8 +246,21 @@ struct soc_device * __init at91_soc_init(const struct at91_soc *socs)
 	return soc_dev;
 }
 
+static const struct of_device_id at91_soc_allowed_list[] __initconst = {
+	{ .compatible = "atmel,at91rm9200", },
+	{ .compatible = "atmel,at91sam9", },
+	{ .compatible = "atmel,sama5", },
+	{ .compatible = "atmel,samv7", },
+	{ }
+};
+
 static int __init atmel_soc_device_init(void)
 {
+	struct device_node *np = of_find_node_by_path("/");
+
+	if (!of_match_node(at91_soc_allowed_list, np))
+		return 0;
+
 	at91_soc_init(socs);
 
 	return 0;
diff --git a/drivers/xen/xenbus/xenbus_probe.c b/drivers/xen/xenbus/xenbus_probe.c
index fe24e8dcb2b8..9cac938361a0 100644
--- a/drivers/xen/xenbus/xenbus_probe.c
+++ b/drivers/xen/xenbus/xenbus_probe.c
@@ -705,6 +705,23 @@ static bool xs_hvm_defer_init_for_callback(void)
 #endif
 }
 
+static int xenbus_probe_thread(void *unused)
+{
+	DEFINE_WAIT(w);
+
+	/*
+	 * We actually just want to wait for *any* trigger of xb_waitq,
+	 * and run xenbus_probe() the moment it occurs.
+	 */
+	prepare_to_wait(&xb_waitq, &w, TASK_INTERRUPTIBLE);
+	schedule();
+	finish_wait(&xb_waitq, &w);
+
+	DPRINTK("probing");
+	xenbus_probe();
+	return 0;
+}
+
 static int __init xenbus_probe_initcall(void)
 {
 	/*
@@ -716,6 +733,20 @@ static int __init xenbus_probe_initcall(void)
 	     !xs_hvm_defer_init_for_callback()))
 		xenbus_probe();
 
+	/*
+	 * For XS_LOCAL, spawn a thread which will wait for xenstored
+	 * or a xenstore-stubdom to be started, then probe. It will be
+	 * triggered when communication starts happening, by waiting
+	 * on xb_waitq.
+	 */
+	if (xen_store_domain_type == XS_LOCAL) {
+		struct task_struct *probe_task;
+
+		probe_task = kthread_run(xenbus_probe_thread, NULL,
+					 "xenbus_probe");
+		if (IS_ERR(probe_task))
+			return PTR_ERR(probe_task);
+	}
 	return 0;
 }
 device_initcall(xenbus_probe_initcall);
diff --git a/include/linux/intel-iommu.h b/include/linux/intel-iommu.h
index d2364ba99f6c..f121b4bc8b14 100644
--- a/include/linux/intel-iommu.h
+++ b/include/linux/intel-iommu.h
@@ -434,6 +434,8 @@ struct intel_iommu {
 	struct iommu_device iommu;  /* IOMMU core code handle */
 	int		node;
 	u32		flags;      /* Software defined flags */
+
+	struct dmar_drhd_unit *drhd;
 };
 
 static inline void __iommu_flush_cache(
diff --git a/include/net/tcp.h b/include/net/tcp.h
index 58e8e57787cf..4602959b58a1 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -1969,7 +1969,7 @@ void tcp_v4_init(void);
 void tcp_init(void);
 
 /* tcp_recovery.c */
-extern void tcp_rack_mark_lost(struct sock *sk);
+extern bool tcp_rack_mark_lost(struct sock *sk);
 extern void tcp_rack_advance(struct tcp_sock *tp, u8 sacked, u32 end_seq,
 			     u64 xmit_time);
 extern void tcp_rack_reo_timeout(struct sock *sk);
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index ec12a52edce2..eb062fab6257 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -2803,7 +2803,8 @@ static void tcp_rack_identify_loss(struct sock *sk, int *ack_flag)
 	if (sysctl_tcp_recovery & TCP_RACK_LOSS_DETECTION) {
 		u32 prior_retrans = tp->retrans_out;
 
-		tcp_rack_mark_lost(sk);
+		if (tcp_rack_mark_lost(sk))
+			*ack_flag &= ~FLAG_SET_XMIT_TIMER;
 		if (prior_retrans > tp->retrans_out)
 			*ack_flag |= FLAG_LOST_RETRANS;
 	}
@@ -3688,15 +3689,16 @@ static int tcp_ack(struct sock *sk, const struct sk_buff *skb, int flag)
 
 	if (tp->tlp_high_seq)
 		tcp_process_tlp_ack(sk, ack, flag);
-	/* If needed, reset TLP/RTO timer; RACK may later override this. */
-	if (flag & FLAG_SET_XMIT_TIMER)
-		tcp_set_xmit_timer(sk);
 
 	if (tcp_ack_is_dubious(sk, flag)) {
 		is_dupack = !(flag & (FLAG_SND_UNA_ADVANCED | FLAG_NOT_DUP));
 		tcp_fastretrans_alert(sk, acked, is_dupack, &flag, &rexmit);
 	}
 
+	/* If needed, reset TLP/RTO timer when RACK doesn't set. */
+	if (flag & FLAG_SET_XMIT_TIMER)
+		tcp_set_xmit_timer(sk);
+
 	if ((flag & FLAG_FORWARD_PROGRESS) || !(flag & FLAG_NOT_DUP))
 		sk_dst_confirm(sk);
 
diff --git a/net/ipv4/tcp_recovery.c b/net/ipv4/tcp_recovery.c
index be8ef1e5dfef..0409cd2c4918 100644
--- a/net/ipv4/tcp_recovery.c
+++ b/net/ipv4/tcp_recovery.c
@@ -102,13 +102,13 @@ static void tcp_rack_detect_loss(struct sock *sk, u32 *reo_timeout)
 	}
 }
 
-void tcp_rack_mark_lost(struct sock *sk)
+bool tcp_rack_mark_lost(struct sock *sk)
 {
 	struct tcp_sock *tp = tcp_sk(sk);
 	u32 timeout;
 
 	if (!tp->rack.advanced)
-		return;
+		return false;
 
 	/* Reset the advanced flag to avoid unnecessary queue scanning */
 	tp->rack.advanced = 0;
@@ -118,6 +118,7 @@ void tcp_rack_mark_lost(struct sock *sk)
 		inet_csk_reset_xmit_timer(sk, ICSK_TIME_REO_TIMEOUT,
 					  timeout, inet_csk(sk)->icsk_rto);
 	}
+	return !!timeout;
 }
 
 /* Record the most recently (re)sent time among the (s)acked packets
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index 0e209a88d88a..651705565dfb 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -1047,6 +1047,7 @@ enum queue_stop_reason {
 	IEEE80211_QUEUE_STOP_REASON_FLUSH,
 	IEEE80211_QUEUE_STOP_REASON_TDLS_TEARDOWN,
 	IEEE80211_QUEUE_STOP_REASON_RESERVE_TID,
+	IEEE80211_QUEUE_STOP_REASON_IFTYPE_CHANGE,
 
 	IEEE80211_QUEUE_STOP_REASONS,
 };
diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c
index 6ce13e976b7a..dc398a181678 100644
--- a/net/mac80211/iface.c
+++ b/net/mac80211/iface.c
@@ -1559,6 +1559,10 @@ static int ieee80211_runtime_change_iftype(struct ieee80211_sub_if_data *sdata,
 	if (ret)
 		return ret;
 
+	ieee80211_stop_vif_queues(local, sdata,
+				  IEEE80211_QUEUE_STOP_REASON_IFTYPE_CHANGE);
+	synchronize_net();
+
 	ieee80211_do_stop(sdata, false);
 
 	ieee80211_teardown_sdata(sdata);
@@ -1579,6 +1583,8 @@ static int ieee80211_runtime_change_iftype(struct ieee80211_sub_if_data *sdata,
 	err = ieee80211_do_open(&sdata->wdev, false);
 	WARN(err, "type change: do_open returned %d", err);
 
+	ieee80211_wake_vif_queues(local, sdata,
+				  IEEE80211_QUEUE_STOP_REASON_IFTYPE_CHANGE);
 	return ret;
 }
 
diff --git a/net/netfilter/nft_dynset.c b/net/netfilter/nft_dynset.c
index 66221ad891a9..278d76566348 100644
--- a/net/netfilter/nft_dynset.c
+++ b/net/netfilter/nft_dynset.c
@@ -205,8 +205,10 @@ static int nft_dynset_init(const struct nft_ctx *ctx,
 		nft_set_ext_add_length(&priv->tmpl, NFT_SET_EXT_EXPR,
 				       priv->expr->ops->size);
 	if (set->flags & NFT_SET_TIMEOUT) {
-		if (timeout || set->timeout)
+		if (timeout || set->timeout) {
+			nft_set_ext_add(&priv->tmpl, NFT_SET_EXT_TIMEOUT);
 			nft_set_ext_add(&priv->tmpl, NFT_SET_EXT_EXPIRATION);
+		}
 	}
 
 	priv->timeout = timeout;
diff --git a/net/nfc/netlink.c b/net/nfc/netlink.c
index 2d642baeafbb..18957fbf37ff 100644
--- a/net/nfc/netlink.c
+++ b/net/nfc/netlink.c
@@ -884,6 +884,7 @@ static int nfc_genl_stop_poll(struct sk_buff *skb, struct genl_info *info)
 
 	if (!dev->polling) {
 		device_unlock(&dev->dev);
+		nfc_put_device(dev);
 		return -EINVAL;
 	}
 
diff --git a/net/nfc/rawsock.c b/net/nfc/rawsock.c
index b927730d9ab0..57a07ab80d92 100644
--- a/net/nfc/rawsock.c
+++ b/net/nfc/rawsock.c
@@ -117,7 +117,7 @@ static int rawsock_connect(struct socket *sock, struct sockaddr *_addr,
 	if (addr->target_idx > dev->target_next_idx - 1 ||
 	    addr->target_idx < dev->target_next_idx - dev->n_targets) {
 		rc = -EINVAL;
-		goto error;
+		goto put_dev;
 	}
 
 	rc = nfc_activate_target(dev, addr->target_idx, addr->nfc_protocol);
diff --git a/net/wireless/wext-core.c b/net/wireless/wext-core.c
index 5236a3c2c0cc..b6414c7bef55 100644
--- a/net/wireless/wext-core.c
+++ b/net/wireless/wext-core.c
@@ -898,8 +898,9 @@ static int ioctl_standard_iw_point(struct iw_point *iwp, unsigned int cmd,
 int call_commit_handler(struct net_device *dev)
 {
 #ifdef CONFIG_WIRELESS_EXT
-	if ((netif_running(dev)) &&
-	   (dev->wireless_handlers->standard[0] != NULL))
+	if (netif_running(dev) &&
+	    dev->wireless_handlers &&
+	    dev->wireless_handlers->standard[0])
 		/* Call the commit handler on the driver */
 		return dev->wireless_handlers->standard[0](dev, NULL,
 							   NULL, NULL);
diff --git a/net/xfrm/xfrm_input.c b/net/xfrm/xfrm_input.c
index 874735742152..594b8b2c32c8 100644
--- a/net/xfrm/xfrm_input.c
+++ b/net/xfrm/xfrm_input.c
@@ -415,7 +415,7 @@ int xfrm_input(struct sk_buff *skb, int nexthdr, __be32 spi, int encap_type)
 		/* only the first xfrm gets the encap type */
 		encap_type = 0;
 
-		if (async && x->repl->recheck(x, skb, seq)) {
+		if (x->repl->recheck(x, skb, seq)) {
 			XFRM_INC_STATS(net, LINUX_MIB_XFRMINSTATESEQERROR);
 			goto drop_unlock;
 		}
diff --git a/tools/testing/selftests/x86/test_syscall_vdso.c b/tools/testing/selftests/x86/test_syscall_vdso.c
index 40370354d4c1..c9c3281077bc 100644
--- a/tools/testing/selftests/x86/test_syscall_vdso.c
+++ b/tools/testing/selftests/x86/test_syscall_vdso.c
@@ -100,12 +100,19 @@ asm (
 	"	shl	$32, %r8\n"
 	"	orq	$0x7f7f7f7f, %r8\n"
 	"	movq	%r8, %r9\n"
-	"	movq	%r8, %r10\n"
-	"	movq	%r8, %r11\n"
-	"	movq	%r8, %r12\n"
-	"	movq	%r8, %r13\n"
-	"	movq	%r8, %r14\n"
-	"	movq	%r8, %r15\n"
+	"	incq	%r9\n"
+	"	movq	%r9, %r10\n"
+	"	incq	%r10\n"
+	"	movq	%r10, %r11\n"
+	"	incq	%r11\n"
+	"	movq	%r11, %r12\n"
+	"	incq	%r12\n"
+	"	movq	%r12, %r13\n"
+	"	incq	%r13\n"
+	"	movq	%r13, %r14\n"
+	"	incq	%r14\n"
+	"	movq	%r14, %r15\n"
+	"	incq	%r15\n"
 	"	ret\n"
 	"	.code32\n"
 	"	.popsection\n"
@@ -128,12 +135,13 @@ int check_regs64(void)
 	int err = 0;
 	int num = 8;
 	uint64_t *r64 = &regs64.r8;
+	uint64_t expected = 0x7f7f7f7f7f7f7f7fULL;
 
 	if (!kernel_is_64bit)
 		return 0;
 
 	do {
-		if (*r64 == 0x7f7f7f7f7f7f7f7fULL)
+		if (*r64 == expected++)
 			continue; /* register did not change */
 		if (syscall_addr != (long)&int80) {
 			/*
@@ -147,18 +155,17 @@ int check_regs64(void)
 				continue;
 			}
 		} else {
-			/* INT80 syscall entrypoint can be used by
+			/*
+			 * INT80 syscall entrypoint can be used by
 			 * 64-bit programs too, unlike SYSCALL/SYSENTER.
 			 * Therefore it must preserve R12+
 			 * (they are callee-saved registers in 64-bit C ABI).
 			 *
-			 * This was probably historically not intended,
-			 * but R8..11 are clobbered (cleared to 0).
-			 * IOW: they are the only registers which aren't
-			 * preserved across INT80 syscall.
+			 * Starting in Linux 4.17 (and any kernel that
+			 * backports the change), R8..11 are preserved.
+			 * Historically (and probably unintentionally), they
+			 * were clobbered or zeroed.
 			 */
-			if (*r64 == 0 && num <= 11)
-				continue;
 		}
 		printf("[FAIL]\tR%d has changed:%016llx\n", num, *r64);
 		err++;