Re: Linux 4.14.219

Greg Kroah-Hartman
2021-02-03T23:06:34Z

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++;