This is the 4.4.173 stable release

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2019-02-07 09:24:50 +01:00 · 2019-02-07 09:24:50 +01:00 · 64b564428f
commit 64b564428f
parent 6d1e42fb1a 343f981c76
60 changed files with 416 additions and 165 deletions
--- a/2
+++ b/2
@ -1,6 +1,6 @@
 VERSION = 4
 PATCHLEVEL = 4
-SUBLEVEL = 172
+SUBLEVEL = 173
 EXTRAVERSION =
 NAME = Blurry Fish Butt

--- a/arch/arc/include/asm/perf_event.h
+++ b/arch/arc/include/asm/perf_event.h
@ -103,7 +103,8 @@ static const char * const arc_pmu_ev_hw_map[] = {

 	/* counts condition */
 	[PERF_COUNT_HW_INSTRUCTIONS] = "iall",
-	[PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = "ijmp", /* Excludes ZOL jumps */
+	/* All jump instructions that are taken */
+	[PERF_COUNT_HW_BRANCH_INSTRUCTIONS] = "ijmptak",
 	[PERF_COUNT_ARC_BPOK]         = "bpok",	  /* NP-NT, PT-T, PNT-NT */
 #ifdef CONFIG_ISA_ARCV2
 	[PERF_COUNT_HW_BRANCH_MISSES] = "bpmp",
--- a/arch/arm/mach-cns3xxx/pcie.c
+++ b/arch/arm/mach-cns3xxx/pcie.c
@ -83,7 +83,7 @@ static void __iomem *cns3xxx_pci_map_bus(struct pci_bus *bus,
 	} else /* remote PCI bus */
 		base = cnspci->cfg1_regs + ((busno & 0xf) << 20);

-	return base + (where & 0xffc) + (devfn << 12);
+	return base + where + (devfn << 12);
 }

 static int cns3xxx_pci_read_config(struct pci_bus *bus, unsigned int devfn,
--- a/arch/arm64/kernel/hyp-stub.S
+++ b/arch/arm64/kernel/hyp-stub.S
@ -26,6 +26,8 @@
 #include <asm/virt.h>

 	.text
+	.pushsection	.hyp.text, "ax"
+
 	.align 11

 ENTRY(__hyp_stub_vectors)
--- a/arch/arm64/mm/flush.c
+++ b/arch/arm64/mm/flush.c
@ -75,10 +75,6 @@ void __sync_icache_dcache(pte_t pte, unsigned long addr)
 {
 	struct page *page = pte_page(pte);

-	/* no flushing needed for anonymous pages */
-	if (!page_mapping(page))
-		return;
-
 	if (!test_and_set_bit(PG_dcache_clean, &page->flags))
 		sync_icache_aliases(page_address(page),
 				    PAGE_SIZE << compound_order(page));
--- a/arch/s390/kernel/early.c
+++ b/arch/s390/kernel/early.c
@ -224,10 +224,10 @@ static noinline __init void detect_machine_type(void)
 	if (stsi(vmms, 3, 2, 2) || !vmms->count)
 		return;

-	/* Running under KVM? If not we assume z/VM */
+	/* Detect known hypervisors */
 	if (!memcmp(vmms->vm[0].cpi, "\xd2\xe5\xd4", 3))
 		S390_lowcore.machine_flags |= MACHINE_FLAG_KVM;
-	else
+	else if (!memcmp(vmms->vm[0].cpi, "\xa9\x61\xe5\xd4", 4))
 		S390_lowcore.machine_flags |= MACHINE_FLAG_VM;
 }

--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@ -833,6 +833,8 @@ void __init setup_arch(char **cmdline_p)
 		pr_info("Linux is running under KVM in 64-bit mode\n");
 	else if (MACHINE_IS_LPAR)
 		pr_info("Linux is running natively in 64-bit mode\n");
+	else
+		pr_info("Linux is running as a guest in 64-bit mode\n");

 	/* Have one command line that is parsed and saved in /proc/cmdline */
 	/* boot_command_line has been already set up in early.c */
--- a/arch/s390/kernel/smp.c
+++ b/arch/s390/kernel/smp.c
@ -360,9 +360,13 @@ void smp_call_online_cpu(void (*func)(void *), void *data)
 */
 void smp_call_ipl_cpu(void (*func)(void *), void *data)
 {
+	struct _lowcore *lc = pcpu_devices->lowcore;
+
+	if (pcpu_devices[0].address == stap())
+		lc = &S390_lowcore;
+
 	pcpu_delegate(&pcpu_devices[0], func, data,
-		      pcpu_devices->lowcore->panic_stack -
-		      PANIC_FRAME_OFFSET + PAGE_SIZE);
+		      lc->panic_stack - PANIC_FRAME_OFFSET + PAGE_SIZE);
 }

 int smp_find_processor_id(u16 address)
@ -1152,7 +1156,11 @@ static ssize_t __ref rescan_store(struct device *dev,
 {
 	int rc;

+	rc = lock_device_hotplug_sysfs();
+	if (rc)
+		return rc;
 	rc = smp_rescan_cpus();
+	unlock_device_hotplug();
 	return rc ? rc : count;
 }
 static DEVICE_ATTR(rescan, 0200, NULL, rescan_store);
--- a/arch/x86/boot/compressed/aslr.c
+++ b/arch/x86/boot/compressed/aslr.c
@ -25,8 +25,8 @@ static inline u16 i8254(void)
 	u16 status, timer;

 	do {
-		outb(I8254_PORT_CONTROL,
-		     I8254_CMD_READBACK | I8254_SELECT_COUNTER0);
+		outb(I8254_CMD_READBACK | I8254_SELECT_COUNTER0,
+		     I8254_PORT_CONTROL);
 		status = inb(I8254_PORT_COUNTER0);
 		timer  = inb(I8254_PORT_COUNTER0);
 		timer |= inb(I8254_PORT_COUNTER0) << 8;
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@ -5524,8 +5524,7 @@ restart:
 		toggle_interruptibility(vcpu, ctxt->interruptibility);
 		vcpu->arch.emulate_regs_need_sync_to_vcpu = false;
 		kvm_rip_write(vcpu, ctxt->eip);
-		if (r == EMULATE_DONE &&
-		    (ctxt->tf || (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP)))
+		if (r == EMULATE_DONE && ctxt->tf)
 			kvm_vcpu_do_singlestep(vcpu, &r);
 		if (!ctxt->have_exception ||
 		    exception_type(ctxt->exception.vector) == EXCPT_TRAP)
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@ -862,6 +862,8 @@ static void cleanup_glue_dir(struct device *dev, struct kobject *glue_dir)
 		return;

 	mutex_lock(&gdp_mutex);
+	if (!kobject_has_children(glue_dir))
+		kobject_del(glue_dir);
 	kobject_put(glue_dir);
 	mutex_unlock(&gdp_mutex);
 }
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@ -81,6 +81,7 @@
 #include <asm/uaccess.h>

 static DEFINE_IDR(loop_index_idr);
+static DEFINE_MUTEX(loop_index_mutex);
 static DEFINE_MUTEX(loop_ctl_mutex);

 static int max_part;
@ -1627,11 +1628,9 @@ static int lo_compat_ioctl(struct block_device *bdev, fmode_t mode,
 static int lo_open(struct block_device *bdev, fmode_t mode)
 {
 	struct loop_device *lo;
-	int err;
+	int err = 0;

-	err = mutex_lock_killable(&loop_ctl_mutex);
-	if (err)
-		return err;
+	mutex_lock(&loop_index_mutex);
 	lo = bdev->bd_disk->private_data;
 	if (!lo) {
 		err = -ENXIO;
@ -1640,20 +1639,18 @@ static int lo_open(struct block_device *bdev, fmode_t mode)

 	atomic_inc(&lo->lo_refcnt);
 out:
-	mutex_unlock(&loop_ctl_mutex);
+	mutex_unlock(&loop_index_mutex);
 	return err;
 }

-static void lo_release(struct gendisk *disk, fmode_t mode)
+static void __lo_release(struct loop_device *lo)
 {
-	struct loop_device *lo;
 	int err;

-	mutex_lock(&loop_ctl_mutex);
-	lo = disk->private_data;
 	if (atomic_dec_return(&lo->lo_refcnt))
-		goto out_unlock;
+		return;

+	mutex_lock(&loop_ctl_mutex);
 	if (lo->lo_flags & LO_FLAGS_AUTOCLEAR) {
 		/*
 		 * In autoclear mode, stop the loop thread
@ -1670,10 +1667,16 @@ static void lo_release(struct gendisk *disk, fmode_t mode)
 		loop_flush(lo);
 	}

-out_unlock:
 	mutex_unlock(&loop_ctl_mutex);
 }

+static void lo_release(struct gendisk *disk, fmode_t mode)
+{
+	mutex_lock(&loop_index_mutex);
+	__lo_release(disk->private_data);
+	mutex_unlock(&loop_index_mutex);
+}
+
 static const struct block_device_operations lo_fops = {
 	.owner =	THIS_MODULE,
 	.open =		lo_open,
@ -1954,7 +1957,7 @@ static struct kobject *loop_probe(dev_t dev, int *part, void *data)
 	struct kobject *kobj;
 	int err;

-	mutex_lock(&loop_ctl_mutex);
+	mutex_lock(&loop_index_mutex);
 	err = loop_lookup(&lo, MINOR(dev) >> part_shift);
 	if (err < 0)
 		err = loop_add(&lo, MINOR(dev) >> part_shift);
@ -1962,7 +1965,7 @@ static struct kobject *loop_probe(dev_t dev, int *part, void *data)
 		kobj = NULL;
 	else
 		kobj = get_disk(lo->lo_disk);
-	mutex_unlock(&loop_ctl_mutex);
+	mutex_unlock(&loop_index_mutex);

 	*part = 0;
 	return kobj;
@ -1972,13 +1975,9 @@ static long loop_control_ioctl(struct file *file, unsigned int cmd,
 			       unsigned long parm)
 {
 	struct loop_device *lo;
-	int ret;
+	int ret = -ENOSYS;

-	ret = mutex_lock_killable(&loop_ctl_mutex);
-	if (ret)
-		return ret;
-
-	ret = -ENOSYS;
+	mutex_lock(&loop_index_mutex);
 	switch (cmd) {
 	case LOOP_CTL_ADD:
 		ret = loop_lookup(&lo, parm);
@ -1992,15 +1991,19 @@ static long loop_control_ioctl(struct file *file, unsigned int cmd,
 		ret = loop_lookup(&lo, parm);
 		if (ret < 0)
 			break;
+		mutex_lock(&loop_ctl_mutex);
 		if (lo->lo_state != Lo_unbound) {
 			ret = -EBUSY;
+			mutex_unlock(&loop_ctl_mutex);
 			break;
 		}
 		if (atomic_read(&lo->lo_refcnt) > 0) {
 			ret = -EBUSY;
+			mutex_unlock(&loop_ctl_mutex);
 			break;
 		}
 		lo->lo_disk->private_data = NULL;
+		mutex_unlock(&loop_ctl_mutex);
 		idr_remove(&loop_index_idr, lo->lo_number);
 		loop_remove(lo);
 		break;
@ -2010,7 +2013,7 @@ static long loop_control_ioctl(struct file *file, unsigned int cmd,
 			break;
 		ret = loop_add(&lo, -1);
 	}
-	mutex_unlock(&loop_ctl_mutex);
+	mutex_unlock(&loop_index_mutex);

 	return ret;
 }
@ -2093,10 +2096,10 @@ static int __init loop_init(void)
 				  THIS_MODULE, loop_probe, NULL, NULL);

 	/* pre-create number of devices given by config or max_loop */
-	mutex_lock(&loop_ctl_mutex);
+	mutex_lock(&loop_index_mutex);
 	for (i = 0; i < nr; i++)
 		loop_add(&lo, i);
-	mutex_unlock(&loop_ctl_mutex);
+	mutex_unlock(&loop_index_mutex);

 	printk(KERN_INFO "loop: module loaded\n");
 	return 0;
--- a/drivers/char/mwave/mwavedd.c
+++ b/drivers/char/mwave/mwavedd.c
@ -59,6 +59,7 @@
 #include <linux/mutex.h>
 #include <linux/delay.h>
 #include <linux/serial_8250.h>
+#include <linux/nospec.h>
 #include "smapi.h"
 #include "mwavedd.h"
 #include "3780i.h"
@ -289,6 +290,8 @@ static long mwave_ioctl(struct file *file, unsigned int iocmd,
 						ipcnum);
 				return -EINVAL;
 			}
+			ipcnum = array_index_nospec(ipcnum,
+						    ARRAY_SIZE(pDrvData->IPCs));
 			PRINTK_3(TRACE_MWAVE,
 				"mwavedd::mwave_ioctl IOCTL_MW_REGISTER_IPC"
 				" ipcnum %x entry usIntCount %x\n",
@ -317,6 +320,8 @@ static long mwave_ioctl(struct file *file, unsigned int iocmd,
 						" Invalid ipcnum %x\n", ipcnum);
 				return -EINVAL;
 			}
+			ipcnum = array_index_nospec(ipcnum,
+						    ARRAY_SIZE(pDrvData->IPCs));
 			PRINTK_3(TRACE_MWAVE,
 				"mwavedd::mwave_ioctl IOCTL_MW_GET_IPC"
 				" ipcnum %x, usIntCount %x\n",
@ -383,6 +388,8 @@ static long mwave_ioctl(struct file *file, unsigned int iocmd,
 						ipcnum);
 				return -EINVAL;
 			}
+			ipcnum = array_index_nospec(ipcnum,
+						    ARRAY_SIZE(pDrvData->IPCs));
 			mutex_lock(&mwave_mutex);
 			if (pDrvData->IPCs[ipcnum].bIsEnabled == TRUE) {
 				pDrvData->IPCs[ipcnum].bIsEnabled = FALSE;
--- a/drivers/input/joystick/xpad.c
+++ b/drivers/input/joystick/xpad.c
@ -255,6 +255,8 @@ static const struct xpad_device {
 	{ 0x0f30, 0x0202, "Joytech Advanced Controller", 0, XTYPE_XBOX },
 	{ 0x0f30, 0x8888, "BigBen XBMiniPad Controller", 0, XTYPE_XBOX },
 	{ 0x102c, 0xff0c, "Joytech Wireless Advanced Controller", 0, XTYPE_XBOX },
+	{ 0x1038, 0x1430, "SteelSeries Stratus Duo", 0, XTYPE_XBOX360 },
+	{ 0x1038, 0x1431, "SteelSeries Stratus Duo", 0, XTYPE_XBOX360 },
 	{ 0x11c9, 0x55f0, "Nacon GC-100XF", 0, XTYPE_XBOX360 },
 	{ 0x12ab, 0x0004, "Honey Bee Xbox360 dancepad", MAP_DPAD_TO_BUTTONS, XTYPE_XBOX360 },
 	{ 0x12ab, 0x0301, "PDP AFTERGLOW AX.1", 0, XTYPE_XBOX360 },
@ -431,6 +433,7 @@ static const struct usb_device_id xpad_table[] = {
 	XPAD_XBOXONE_VENDOR(0x0e6f),		/* 0x0e6f X-Box One controllers */
 	XPAD_XBOX360_VENDOR(0x0f0d),		/* Hori Controllers */
 	XPAD_XBOXONE_VENDOR(0x0f0d),		/* Hori Controllers */
+	XPAD_XBOX360_VENDOR(0x1038),		/* SteelSeries Controllers */
 	XPAD_XBOX360_VENDOR(0x11c9),		/* Nacon GC100XF */
 	XPAD_XBOX360_VENDOR(0x12ab),		/* X-Box 360 dance pads */
 	XPAD_XBOX360_VENDOR(0x1430),		/* RedOctane X-Box 360 controllers */
--- a/drivers/irqchip/irq-gic-v3-its.c
+++ b/drivers/irqchip/irq-gic-v3-its.c
@ -1230,13 +1230,14 @@ static void its_free_device(struct its_device *its_dev)
 	kfree(its_dev);
 }

-static int its_alloc_device_irq(struct its_device *dev, irq_hw_number_t *hwirq)
+static int its_alloc_device_irq(struct its_device *dev, int nvecs, irq_hw_number_t *hwirq)
 {
 	int idx;

-	idx = find_first_zero_bit(dev->event_map.lpi_map,
-				  dev->event_map.nr_lpis);
-	if (idx == dev->event_map.nr_lpis)
+	idx = bitmap_find_free_region(dev->event_map.lpi_map,
+				      dev->event_map.nr_lpis,
+				      get_count_order(nvecs));
+	if (idx < 0)
 		return -ENOSPC;

 	*hwirq = dev->event_map.lpi_base + idx;
@ -1317,20 +1318,20 @@ static int its_irq_domain_alloc(struct irq_domain *domain, unsigned int virq,
 	int err;
 	int i;

-	for (i = 0; i < nr_irqs; i++) {
-		err = its_alloc_device_irq(its_dev, &hwirq);
-		if (err)
-			return err;
+	err = its_alloc_device_irq(its_dev, nr_irqs, &hwirq);
+	if (err)
+		return err;

-		err = its_irq_gic_domain_alloc(domain, virq + i, hwirq);
+	for (i = 0; i < nr_irqs; i++) {
+		err = its_irq_gic_domain_alloc(domain, virq + i, hwirq + i);
 		if (err)
 			return err;

 		irq_domain_set_hwirq_and_chip(domain, virq + i,
-					      hwirq, &its_irq_chip, its_dev);
+					      hwirq + i, &its_irq_chip, its_dev);
 		pr_debug("ID:%d pID:%d vID:%d\n",
-			 (int)(hwirq - its_dev->event_map.lpi_base),
-			 (int) hwirq, virq + i);
+			 (int)(hwirq + i - its_dev->event_map.lpi_base),
+			 (int)(hwirq + i), virq + i);
 	}

 	return 0;
--- a/drivers/mmc/host/sdhci-iproc.c
+++ b/drivers/mmc/host/sdhci-iproc.c
@ -217,7 +217,10 @@ static int sdhci_iproc_probe(struct platform_device *pdev)

 	iproc_host->data = iproc_data;

-	mmc_of_parse(host->mmc);
+	ret = mmc_of_parse(host->mmc);
+	if (ret)
+		goto err;
+
 	sdhci_get_of_property(pdev);

 	/* Enable EMMC 1/8V DDR capable */
--- a/drivers/net/can/dev.c
+++ b/drivers/net/can/dev.c
@ -426,8 +426,6 @@ EXPORT_SYMBOL_GPL(can_put_echo_skb);
 struct sk_buff *__can_get_echo_skb(struct net_device *dev, unsigned int idx, u8 *len_ptr)
 {
 	struct can_priv *priv = netdev_priv(dev);
-	struct sk_buff *skb = priv->echo_skb[idx];
-	struct canfd_frame *cf;

 	if (idx >= priv->echo_skb_max) {
 		netdev_err(dev, "%s: BUG! Trying to access can_priv::echo_skb out of bounds (%u/max %u)\n",
@ -435,20 +433,21 @@ struct sk_buff *__can_get_echo_skb(struct net_device *dev, unsigned int idx, u8
 		return NULL;
 	}

-	if (!skb) {
-		netdev_err(dev, "%s: BUG! Trying to echo non existing skb: can_priv::echo_skb[%u]\n",
-			   __func__, idx);
-		return NULL;
+	if (priv->echo_skb[idx]) {
+		/* Using "struct canfd_frame::len" for the frame
+		 * length is supported on both CAN and CANFD frames.
+		 */
+		struct sk_buff *skb = priv->echo_skb[idx];
+		struct canfd_frame *cf = (struct canfd_frame *)skb->data;
+		u8 len = cf->len;
+
+		*len_ptr = len;
+		priv->echo_skb[idx] = NULL;
+
+		return skb;
 	}

-	/* Using "struct canfd_frame::len" for the frame
-	 * length is supported on both CAN and CANFD frames.
-	 */
-	cf = (struct canfd_frame *)skb->data;
-	*len_ptr = cf->len;
-	priv->echo_skb[idx] = NULL;
-
-	return skb;
+	return NULL;
 }

 /*
--- a/drivers/net/ethernet/freescale/ucc_geth.c
+++ b/drivers/net/ethernet/freescale/ucc_geth.c
@ -1888,6 +1888,8 @@ static void ucc_geth_free_tx(struct ucc_geth_private *ugeth)
 	u16 i, j;
 	u8 __iomem *bd;

+	netdev_reset_queue(ugeth->ndev);
+
 	ug_info = ugeth->ug_info;
 	uf_info = &ug_info->uf_info;

--- a/drivers/net/ethernet/mellanox/mlx4/fw.c
+++ b/drivers/net/ethernet/mellanox/mlx4/fw.c
@ -1906,9 +1906,11 @@ int mlx4_QUERY_HCA(struct mlx4_dev *dev,
 {
 	struct mlx4_cmd_mailbox *mailbox;
 	__be32 *outbox;
+	u64 qword_field;
 	u32 dword_field;
-	int err;
+	u16 word_field;
 	u8 byte_field;
+	int err;
 	static const u8 a0_dmfs_query_hw_steering[] =  {
 		[0] = MLX4_STEERING_DMFS_A0_DEFAULT,
 		[1] = MLX4_STEERING_DMFS_A0_DYNAMIC,
@ -1936,19 +1938,32 @@ int mlx4_QUERY_HCA(struct mlx4_dev *dev,

 	/* QPC/EEC/CQC/EQC/RDMARC attributes */

-	MLX4_GET(param->qpc_base,      outbox, INIT_HCA_QPC_BASE_OFFSET);
-	MLX4_GET(param->log_num_qps,   outbox, INIT_HCA_LOG_QP_OFFSET);
-	MLX4_GET(param->srqc_base,     outbox, INIT_HCA_SRQC_BASE_OFFSET);
-	MLX4_GET(param->log_num_srqs,  outbox, INIT_HCA_LOG_SRQ_OFFSET);
-	MLX4_GET(param->cqc_base,      outbox, INIT_HCA_CQC_BASE_OFFSET);
-	MLX4_GET(param->log_num_cqs,   outbox, INIT_HCA_LOG_CQ_OFFSET);
-	MLX4_GET(param->altc_base,     outbox, INIT_HCA_ALTC_BASE_OFFSET);
-	MLX4_GET(param->auxc_base,     outbox, INIT_HCA_AUXC_BASE_OFFSET);
-	MLX4_GET(param->eqc_base,      outbox, INIT_HCA_EQC_BASE_OFFSET);
-	MLX4_GET(param->log_num_eqs,   outbox, INIT_HCA_LOG_EQ_OFFSET);
-	MLX4_GET(param->num_sys_eqs,   outbox, INIT_HCA_NUM_SYS_EQS_OFFSET);
-	MLX4_GET(param->rdmarc_base,   outbox, INIT_HCA_RDMARC_BASE_OFFSET);
-	MLX4_GET(param->log_rd_per_qp, outbox, INIT_HCA_LOG_RD_OFFSET);
+	MLX4_GET(qword_field, outbox, INIT_HCA_QPC_BASE_OFFSET);
+	param->qpc_base = qword_field & ~((u64)0x1f);
+	MLX4_GET(byte_field, outbox, INIT_HCA_LOG_QP_OFFSET);
+	param->log_num_qps = byte_field & 0x1f;
+	MLX4_GET(qword_field, outbox, INIT_HCA_SRQC_BASE_OFFSET);
+	param->srqc_base = qword_field & ~((u64)0x1f);
+	MLX4_GET(byte_field, outbox, INIT_HCA_LOG_SRQ_OFFSET);
+	param->log_num_srqs = byte_field & 0x1f;
+	MLX4_GET(qword_field, outbox, INIT_HCA_CQC_BASE_OFFSET);
+	param->cqc_base = qword_field & ~((u64)0x1f);
+	MLX4_GET(byte_field, outbox, INIT_HCA_LOG_CQ_OFFSET);
+	param->log_num_cqs = byte_field & 0x1f;
+	MLX4_GET(qword_field, outbox, INIT_HCA_ALTC_BASE_OFFSET);
+	param->altc_base = qword_field;
+	MLX4_GET(qword_field, outbox, INIT_HCA_AUXC_BASE_OFFSET);
+	param->auxc_base = qword_field;
+	MLX4_GET(qword_field, outbox, INIT_HCA_EQC_BASE_OFFSET);
+	param->eqc_base = qword_field & ~((u64)0x1f);
+	MLX4_GET(byte_field, outbox, INIT_HCA_LOG_EQ_OFFSET);
+	param->log_num_eqs = byte_field & 0x1f;
+	MLX4_GET(word_field, outbox, INIT_HCA_NUM_SYS_EQS_OFFSET);
+	param->num_sys_eqs = word_field & 0xfff;
+	MLX4_GET(qword_field, outbox, INIT_HCA_RDMARC_BASE_OFFSET);
+	param->rdmarc_base = qword_field & ~((u64)0x1f);
+	MLX4_GET(byte_field, outbox, INIT_HCA_LOG_RD_OFFSET);
+	param->log_rd_per_qp = byte_field & 0x7;

 	MLX4_GET(dword_field, outbox, INIT_HCA_FLAGS_OFFSET);
 	if (dword_field & (1 << INIT_HCA_DEVICE_MANAGED_FLOW_STEERING_EN)) {
@ -1967,22 +1982,21 @@ int mlx4_QUERY_HCA(struct mlx4_dev *dev,
 	/* steering attributes */
 	if (param->steering_mode == MLX4_STEERING_MODE_DEVICE_MANAGED) {
 		MLX4_GET(param->mc_base, outbox, INIT_HCA_FS_BASE_OFFSET);
-		MLX4_GET(param->log_mc_entry_sz, outbox,
-			 INIT_HCA_FS_LOG_ENTRY_SZ_OFFSET);
-		MLX4_GET(param->log_mc_table_sz, outbox,
-			 INIT_HCA_FS_LOG_TABLE_SZ_OFFSET);
-		MLX4_GET(byte_field, outbox,
-			 INIT_HCA_FS_A0_OFFSET);
+		MLX4_GET(byte_field, outbox, INIT_HCA_FS_LOG_ENTRY_SZ_OFFSET);
+		param->log_mc_entry_sz = byte_field & 0x1f;
+		MLX4_GET(byte_field, outbox, INIT_HCA_FS_LOG_TABLE_SZ_OFFSET);
+		param->log_mc_table_sz = byte_field & 0x1f;
+		MLX4_GET(byte_field, outbox, INIT_HCA_FS_A0_OFFSET);
 		param->dmfs_high_steer_mode =
 			a0_dmfs_query_hw_steering[(byte_field >> 6) & 3];
 	} else {
 		MLX4_GET(param->mc_base, outbox, INIT_HCA_MC_BASE_OFFSET);
-		MLX4_GET(param->log_mc_entry_sz, outbox,
-			 INIT_HCA_LOG_MC_ENTRY_SZ_OFFSET);
-		MLX4_GET(param->log_mc_hash_sz,  outbox,
-			 INIT_HCA_LOG_MC_HASH_SZ_OFFSET);
-		MLX4_GET(param->log_mc_table_sz, outbox,
-			 INIT_HCA_LOG_MC_TABLE_SZ_OFFSET);
+		MLX4_GET(byte_field, outbox, INIT_HCA_LOG_MC_ENTRY_SZ_OFFSET);
+		param->log_mc_entry_sz = byte_field & 0x1f;
+		MLX4_GET(byte_field,  outbox, INIT_HCA_LOG_MC_HASH_SZ_OFFSET);
+		param->log_mc_hash_sz = byte_field & 0x1f;
+		MLX4_GET(byte_field, outbox, INIT_HCA_LOG_MC_TABLE_SZ_OFFSET);
+		param->log_mc_table_sz = byte_field & 0x1f;
 	}

 	/* CX3 is capable of extending CQEs/EQEs from 32 to 64 bytes */
@ -2006,15 +2020,18 @@ int mlx4_QUERY_HCA(struct mlx4_dev *dev,
 	/* TPT attributes */

 	MLX4_GET(param->dmpt_base,  outbox, INIT_HCA_DMPT_BASE_OFFSET);
-	MLX4_GET(param->mw_enabled, outbox, INIT_HCA_TPT_MW_OFFSET);
-	MLX4_GET(param->log_mpt_sz, outbox, INIT_HCA_LOG_MPT_SZ_OFFSET);
+	MLX4_GET(byte_field, outbox, INIT_HCA_TPT_MW_OFFSET);
+	param->mw_enabled = byte_field >> 7;
+	MLX4_GET(byte_field, outbox, INIT_HCA_LOG_MPT_SZ_OFFSET);
+	param->log_mpt_sz = byte_field & 0x3f;
 	MLX4_GET(param->mtt_base,   outbox, INIT_HCA_MTT_BASE_OFFSET);
 	MLX4_GET(param->cmpt_base,  outbox, INIT_HCA_CMPT_BASE_OFFSET);

 	/* UAR attributes */

 	MLX4_GET(param->uar_page_sz, outbox, INIT_HCA_UAR_PAGE_SZ_OFFSET);
-	MLX4_GET(param->log_uar_sz, outbox, INIT_HCA_LOG_UAR_SZ_OFFSET);
+	MLX4_GET(byte_field, outbox, INIT_HCA_LOG_UAR_SZ_OFFSET);
+	param->log_uar_sz = byte_field & 0xf;

 	/* phv_check enable */
 	MLX4_GET(byte_field, outbox, INIT_HCA_CACHELINE_SZ_OFFSET);
--- a/drivers/net/ppp/pppoe.c
+++ b/drivers/net/ppp/pppoe.c
@ -442,6 +442,7 @@ static int pppoe_rcv(struct sk_buff *skb, struct net_device *dev,
 	if (pskb_trim_rcsum(skb, len))
 		goto drop;

+	ph = pppoe_hdr(skb);
 	pn = pppoe_pernet(dev_net(dev));

 	/* Note that get_item does a sock_hold(), so sk_pppox(po)
--- a/drivers/platform/x86/asus-nb-wmi.c
+++ b/drivers/platform/x86/asus-nb-wmi.c
@ -339,8 +339,7 @@ static const struct key_entry asus_nb_wmi_keymap[] = {
 	{ KE_KEY, 0x30, { KEY_VOLUMEUP } },
 	{ KE_KEY, 0x31, { KEY_VOLUMEDOWN } },
 	{ KE_KEY, 0x32, { KEY_MUTE } },
-	{ KE_KEY, 0x33, { KEY_DISPLAYTOGGLE } }, /* LCD on */
-	{ KE_KEY, 0x34, { KEY_DISPLAY_OFF } }, /* LCD off */
+	{ KE_KEY, 0x35, { KEY_SCREENLOCK } },
 	{ KE_KEY, 0x40, { KEY_PREVIOUSSONG } },
 	{ KE_KEY, 0x41, { KEY_NEXTSONG } },
 	{ KE_KEY, 0x43, { KEY_STOPCD } }, /* Stop/Eject */
--- a/drivers/s390/char/sclp_config.c
+++ b/drivers/s390/char/sclp_config.c
@ -43,7 +43,9 @@ static void sclp_cpu_capability_notify(struct work_struct *work)

 static void __ref sclp_cpu_change_notify(struct work_struct *work)
 {
+	lock_device_hotplug();
 	smp_rescan_cpus();
+	unlock_device_hotplug();
 }

 static void sclp_conf_receiver_fn(struct evbuf_header *evbuf)
--- a/drivers/staging/rtl8188eu/os_dep/usb_intf.c
+++ b/drivers/staging/rtl8188eu/os_dep/usb_intf.c
@ -47,6 +47,7 @@ static struct usb_device_id rtw_usb_id_tbl[] = {
 	{USB_DEVICE(0x2001, 0x330F)}, /* DLink DWA-125 REV D1 */
 	{USB_DEVICE(0x2001, 0x3310)}, /* Dlink DWA-123 REV D1 */
 	{USB_DEVICE(0x2001, 0x3311)}, /* DLink GO-USB-N150 REV B1 */
+	{USB_DEVICE(0x2001, 0x331B)}, /* D-Link DWA-121 rev B1 */
 	{USB_DEVICE(0x2357, 0x010c)}, /* TP-Link TL-WN722N v2 */
 	{USB_DEVICE(0x0df6, 0x0076)}, /* Sitecom N150 v2 */
 	{USB_DEVICE(USB_VENDER_ID_REALTEK, 0xffef)}, /* Rosewill RNX-N150NUB */
--- a/drivers/tty/n_hdlc.c
+++ b/drivers/tty/n_hdlc.c
@ -598,6 +598,7 @@ static ssize_t n_hdlc_tty_read(struct tty_struct *tty, struct file *file,
 				/* too large for caller's buffer */
 				ret = -EOVERFLOW;
 			} else {
+				__set_current_state(TASK_RUNNING);
 				if (copy_to_user(buf, rbuf->buf, rbuf->count))
 					ret = -EFAULT;
 				else
--- a/drivers/tty/tty_io.c
+++ b/drivers/tty/tty_io.c
@ -2297,7 +2297,8 @@ static int tiocsti(struct tty_struct *tty, char __user *p)
 		return -EFAULT;
 	tty_audit_tiocsti(tty, ch);
 	ld = tty_ldisc_ref_wait(tty);
-	ld->ops->receive_buf(tty, &ch, &mbz, 1);
+	if (ld->ops->receive_buf)
+		ld->ops->receive_buf(tty, &ch, &mbz, 1);
 	tty_ldisc_deref(ld);
 	return 0;
 }
--- a/drivers/tty/vt/vt.c
+++ b/drivers/tty/vt/vt.c
@ -958,6 +958,7 @@ static int vc_do_resize(struct tty_struct *tty, struct vc_data *vc,
 	if (CON_IS_VISIBLE(vc))
 		update_screen(vc);
 	vt_event_post(VT_EVENT_RESIZE, vc->vc_num, vc->vc_num);
+	notify_update(vc);
 	return err;
 }

--- a/drivers/usb/serial/pl2303.c
+++ b/drivers/usb/serial/pl2303.c
@ -47,6 +47,7 @@ static const struct usb_device_id id_table[] = {
 	{ USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_HCR331) },
 	{ USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_MOTOROLA) },
 	{ USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_ZTEK) },
+	{ USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_TB) },
 	{ USB_DEVICE(IODATA_VENDOR_ID, IODATA_PRODUCT_ID) },
 	{ USB_DEVICE(IODATA_VENDOR_ID, IODATA_PRODUCT_ID_RSAQ5) },
 	{ USB_DEVICE(ATEN_VENDOR_ID, ATEN_PRODUCT_ID) },
--- a/drivers/usb/serial/pl2303.h
+++ b/drivers/usb/serial/pl2303.h
@ -13,6 +13,7 @@

 #define PL2303_VENDOR_ID	0x067b
 #define PL2303_PRODUCT_ID	0x2303
+#define PL2303_PRODUCT_ID_TB		0x2304
 #define PL2303_PRODUCT_ID_RSAQ2		0x04bb
 #define PL2303_PRODUCT_ID_DCU11		0x1234
 #define PL2303_PRODUCT_ID_PHAROS	0xaaa0
@ -25,6 +26,7 @@
 #define PL2303_PRODUCT_ID_MOTOROLA	0x0307
 #define PL2303_PRODUCT_ID_ZTEK		0xe1f1

+
 #define ATEN_VENDOR_ID		0x0557
 #define ATEN_VENDOR_ID2		0x0547
 #define ATEN_PRODUCT_ID		0x2008
--- a/drivers/usb/serial/usb-serial-simple.c
+++ b/drivers/usb/serial/usb-serial-simple.c
@ -88,7 +88,8 @@ DEVICE(moto_modem, MOTO_IDS);
 /* Motorola Tetra driver */
 #define MOTOROLA_TETRA_IDS()			\
 	{ USB_DEVICE(0x0cad, 0x9011) },	/* Motorola Solutions TETRA PEI */ \
-	{ USB_DEVICE(0x0cad, 0x9012) }	/* MTP6550 */
+	{ USB_DEVICE(0x0cad, 0x9012) },	/* MTP6550 */ \
+	{ USB_DEVICE(0x0cad, 0x9016) }	/* TPG2200 */
 DEVICE(motorola_tetra, MOTOROLA_TETRA_IDS);

 /* Novatel Wireless GPS driver */
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@ -48,6 +48,7 @@
 #include "cifs_unicode.h"
 #include "cifs_debug.h"
 #include "cifs_fs_sb.h"
+#include "dns_resolve.h"
 #include "ntlmssp.h"
 #include "nterr.h"
 #include "rfc1002pdu.h"
@ -303,6 +304,53 @@ static void cifs_prune_tlinks(struct work_struct *work);
 static int cifs_setup_volume_info(struct smb_vol *volume_info, char *mount_data,
 					const char *devname);

+/*
+ * Resolve hostname and set ip addr in tcp ses. Useful for hostnames that may
+ * get their ip addresses changed at some point.
+ *
+ * This should be called with server->srv_mutex held.
+ */
+#ifdef CONFIG_CIFS_DFS_UPCALL
+static int reconn_set_ipaddr(struct TCP_Server_Info *server)
+{
+	int rc;
+	int len;
+	char *unc, *ipaddr = NULL;
+
+	if (!server->hostname)
+		return -EINVAL;
+
+	len = strlen(server->hostname) + 3;
+
+	unc = kmalloc(len, GFP_KERNEL);
+	if (!unc) {
+		cifs_dbg(FYI, "%s: failed to create UNC path\n", __func__);
+		return -ENOMEM;
+	}
+	snprintf(unc, len, "\\\\%s", server->hostname);
+
+	rc = dns_resolve_server_name_to_ip(unc, &ipaddr);
+	kfree(unc);
+
+	if (rc < 0) {
+		cifs_dbg(FYI, "%s: failed to resolve server part of %s to IP: %d\n",
+			 __func__, server->hostname, rc);
+		return rc;
+	}
+
+	rc = cifs_convert_address((struct sockaddr *)&server->dstaddr, ipaddr,
+				  strlen(ipaddr));
+	kfree(ipaddr);
+
+	return !rc ? -1 : 0;
+}
+#else
+static inline int reconn_set_ipaddr(struct TCP_Server_Info *server)
+{
+	return 0;
+}
+#endif
+
 /*
 * cifs tcp session reconnection
 *
@ -400,6 +448,11 @@ cifs_reconnect(struct TCP_Server_Info *server)
 		rc = generic_ip_connect(server);
 		if (rc) {
 			cifs_dbg(FYI, "reconnect error %d\n", rc);
+			rc = reconn_set_ipaddr(server);
+			if (rc) {
+				cifs_dbg(FYI, "%s: failed to resolve hostname: %d\n",
+					 __func__, rc);
+			}
 			mutex_unlock(&server->srv_mutex);
 			msleep(3000);
 		} else {
--- a/fs/cifs/smb2ops.c
+++ b/fs/cifs/smb2ops.c
@ -143,14 +143,14 @@ smb2_wait_mtu_credits(struct TCP_Server_Info *server, unsigned int size,

 			scredits = server->credits;
 			/* can deadlock with reopen */
-			if (scredits == 1) {
+			if (scredits <= 8) {
 				*num = SMB2_MAX_BUFFER_SIZE;
 				*credits = 0;
 				break;
 			}

-			/* leave one credit for a possible reopen */
-			scredits--;
+			/* leave some credits for reopen and other ops */
+			scredits -= 8;
 			*num = min_t(unsigned int, size,
 				     scredits * SMB2_MAX_BUFFER_SIZE);

--- a/fs/cifs/smb2pdu.c
+++ b/fs/cifs/smb2pdu.c
@ -2523,8 +2523,8 @@ SMB2_query_directory(const unsigned int xid, struct cifs_tcon *tcon,
 		if (rc == -ENODATA && rsp->hdr.Status == STATUS_NO_MORE_FILES) {
 			srch_inf->endOfSearch = true;
 			rc = 0;
-		}
-		cifs_stats_fail_inc(tcon, SMB2_QUERY_DIRECTORY_HE);
+		} else
+			cifs_stats_fail_inc(tcon, SMB2_QUERY_DIRECTORY_HE);
 		goto qdir_exit;
 	}

--- a/fs/dcache.c
+++ b/fs/dcache.c
@ -1155,15 +1155,11 @@ static enum lru_status dentry_lru_isolate_shrink(struct list_head *item,
 */
 void shrink_dcache_sb(struct super_block *sb)
 {
-	long freed;
-
 	do {
 		LIST_HEAD(dispose);

-		freed = list_lru_walk(&sb->s_dentry_lru,
+		list_lru_walk(&sb->s_dentry_lru,
 			dentry_lru_isolate_shrink, &dispose, 1024);
-
-		this_cpu_sub(nr_dentry_unused, freed);
 		shrink_dentry_list(&dispose);
 		cond_resched();
 	} while (list_lru_count(&sb->s_dentry_lru) > 0);
--- a/fs/gfs2/rgrp.c
+++ b/fs/gfs2/rgrp.c
@ -1720,9 +1720,9 @@ static int gfs2_rbm_find(struct gfs2_rbm *rbm, u8 state, u32 *minext,
 			goto next_iter;
 		}
 		if (ret == -E2BIG) {
-			n += rbm->bii - initial_bii;
 			rbm->bii = 0;
 			rbm->offset = 0;
+			n += (rbm->bii - initial_bii);
 			goto res_covered_end_of_rgrp;
 		}
 		return ret;
--- a/fs/read_write.c
+++ b/fs/read_write.c
@ -363,8 +363,10 @@ ssize_t vfs_iter_write(struct file *file, struct iov_iter *iter, loff_t *ppos)
 	iter->type |= WRITE;
 	ret = file->f_op->write_iter(&kiocb, iter);
 	BUG_ON(ret == -EIOCBQUEUED);
-	if (ret > 0)
+	if (ret > 0) {
 		*ppos = kiocb.ki_pos;
+		fsnotify_modify(file);
+	}
 	return ret;
 }
 EXPORT_SYMBOL(vfs_iter_write);
--- a/fs/super.c
+++ b/fs/super.c
@ -118,13 +118,23 @@ static unsigned long super_cache_count(struct shrinker *shrink,
 	sb = container_of(shrink, struct super_block, s_shrink);

 	/*
-	 * Don't call trylock_super as it is a potential
-	 * scalability bottleneck. The counts could get updated
-	 * between super_cache_count and super_cache_scan anyway.
-	 * Call to super_cache_count with shrinker_rwsem held
-	 * ensures the safety of call to list_lru_shrink_count() and
-	 * s_op->nr_cached_objects().
+	 * We don't call trylock_super() here as it is a scalability bottleneck,
+	 * so we're exposed to partial setup state. The shrinker rwsem does not
+	 * protect filesystem operations backing list_lru_shrink_count() or
+	 * s_op->nr_cached_objects(). Counts can change between
+	 * super_cache_count and super_cache_scan, so we really don't need locks
+	 * here.
+	 *
+	 * However, if we are currently mounting the superblock, the underlying
+	 * filesystem might be in a state of partial construction and hence it
+	 * is dangerous to access it.  trylock_super() uses a MS_BORN check to
+	 * avoid this situation, so do the same here. The memory barrier is
+	 * matched with the one in mount_fs() as we don't hold locks here.
 	 */
+	if (!(sb->s_flags & MS_BORN))
+		return 0;
+	smp_rmb();
+
 	if (sb->s_op && sb->s_op->nr_cached_objects)
 		total_objects = sb->s_op->nr_cached_objects(sb, sc);

@ -1151,6 +1161,14 @@ mount_fs(struct file_system_type *type, int flags, const char *name, struct vfsm
 	sb = root->d_sb;
 	BUG_ON(!sb);
 	WARN_ON(!sb->s_bdi);
+
+	/*
+	 * Write barrier is for super_cache_count(). We place it before setting
+	 * MS_BORN as the data dependency between the two functions is the
+	 * superblock structure contents that we just set up, not the MS_BORN
+	 * flag.
+	 */
+	smp_wmb();
 	sb->s_flags |= MS_BORN;

 	error = security_sb_kern_mount(sb, flags, secdata);
--- a/include/linux/kobject.h
+++ b/include/linux/kobject.h
@ -113,6 +113,23 @@ extern void kobject_put(struct kobject *kobj);
 extern const void *kobject_namespace(struct kobject *kobj);
 extern char *kobject_get_path(struct kobject *kobj, gfp_t flag);

+/**
+ * kobject_has_children - Returns whether a kobject has children.
+ * @kobj: the object to test
+ *
+ * This will return whether a kobject has other kobjects as children.
+ *
+ * It does NOT account for the presence of attribute files, only sub
+ * directories. It also assumes there is no concurrent addition or
+ * removal of such children, and thus relies on external locking.
+ */
+static inline bool kobject_has_children(struct kobject *kobj)
+{
+	WARN_ON_ONCE(atomic_read(&kobj->kref.refcount) == 0);
+
+	return kobj->sd && kobj->sd->dir.subdirs;
+}
+
 struct kobj_type {
 	void (*release)(struct kobject *kobj);
 	const struct sysfs_ops *sysfs_ops;
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@ -2798,6 +2798,7 @@ static inline unsigned char *skb_push_rcsum(struct sk_buff *skb,
 *
 *	This is exactly the same as pskb_trim except that it ensures the
 *	checksum of received packets are still valid after the operation.
+ *	It can change skb pointers.
 */

 static inline int pskb_trim_rcsum(struct sk_buff *skb, unsigned int len)
--- a/include/net/ip_fib.h
+++ b/include/net/ip_fib.h
@ -200,7 +200,7 @@ int fib_table_insert(struct fib_table *, struct fib_config *);
 int fib_table_delete(struct fib_table *, struct fib_config *);
 int fib_table_dump(struct fib_table *table, struct sk_buff *skb,
 		   struct netlink_callback *cb);
-int fib_table_flush(struct fib_table *table);
+int fib_table_flush(struct fib_table *table, bool flush_all);
 struct fib_table *fib_trie_unmerge(struct fib_table *main_tb);
 void fib_table_flush_external(struct fib_table *table);
 void fib_free_table(struct fib_table *tb);
--- a/kernel/exit.c
+++ b/kernel/exit.c
@ -453,12 +453,14 @@ static struct task_struct *find_alive_thread(struct task_struct *p)
 	return NULL;
 }

-static struct task_struct *find_child_reaper(struct task_struct *father)
+static struct task_struct *find_child_reaper(struct task_struct *father,
+						struct list_head *dead)
 	__releases(&tasklist_lock)
 	__acquires(&tasklist_lock)
 {
 	struct pid_namespace *pid_ns = task_active_pid_ns(father);
 	struct task_struct *reaper = pid_ns->child_reaper;
+	struct task_struct *p, *n;

 	if (likely(reaper != father))
 		return reaper;
@ -474,6 +476,12 @@ static struct task_struct *find_child_reaper(struct task_struct *father)
 		panic("Attempted to kill init! exitcode=0x%08x\n",
 			father->signal->group_exit_code ?: father->exit_code);
 	}
+
+	list_for_each_entry_safe(p, n, dead, ptrace_entry) {
+		list_del_init(&p->ptrace_entry);
+		release_task(p);
+	}
+
 	zap_pid_ns_processes(pid_ns);
 	write_lock_irq(&tasklist_lock);

@ -560,7 +568,7 @@ static void forget_original_parent(struct task_struct *father,
 		exit_ptrace(father, dead);

 	/* Can drop and reacquire tasklist_lock */
-	reaper = find_child_reaper(father);
+	reaper = find_child_reaper(father, dead);
 	if (list_empty(&father->children))
 		return;

--- a/mm/migrate.c
+++ b/mm/migrate.c
@ -936,6 +936,7 @@ static ICE_noinline int unmap_and_move(new_page_t get_new_page,
 	int rc = MIGRATEPAGE_SUCCESS;
 	int *result = NULL;
 	struct page *newpage;
+	bool is_lru = !isolated_balloon_page(page);

 	newpage = get_new_page(page, private, &result);
 	if (!newpage)
@ -983,11 +984,13 @@ out:
 	/*
 	 * If migration was not successful and there's a freeing callback, use
 	 * it.  Otherwise, putback_lru_page() will drop the reference grabbed
-	 * during isolation.
+	 * during isolation. Use the old state of the isolated source page to
+	 * determine if we migrated a LRU page. newpage was already unlocked
+	 * and possibly modified by its owner - don't rely on the page state.
 	 */
 	if (put_new_page)
 		put_new_page(newpage, private);
-	else if (unlikely(__is_movable_balloon_page(newpage))) {
+	else if (rc == MIGRATEPAGE_SUCCESS && unlikely(!is_lru)) {
 		/* drop our reference, page already in the balloon */
 		put_page(newpage);
 	} else
--- a/mm/oom_kill.c
+++ b/mm/oom_kill.c
@ -543,6 +543,13 @@ void oom_kill_process(struct oom_control *oc, struct task_struct *p,
 	 * still freeing memory.
 	 */
 	read_lock(&tasklist_lock);
+
+	/*
+	 * The task 'p' might have already exited before reaching here. The
+	 * put_task_struct() will free task_struct 'p' while the loop still try
+	 * to access the field of 'p', so, get an extra reference.
+	 */
+	get_task_struct(p);
 	for_each_thread(p, t) {
 		list_for_each_entry(child, &t->children, sibling) {
 			unsigned int child_points;
@ -562,6 +569,7 @@ void oom_kill_process(struct oom_control *oc, struct task_struct *p,
 			}
 		}
 	}
+	put_task_struct(p);
 	read_unlock(&tasklist_lock);

 	p = find_lock_task_mm(victim);
--- a/net/bridge/br_forward.c
+++ b/net/bridge/br_forward.c
@ -39,10 +39,10 @@ static inline int should_deliver(const struct net_bridge_port *p,

 int br_dev_queue_push_xmit(struct net *net, struct sock *sk, struct sk_buff *skb)
 {
+	skb_push(skb, ETH_HLEN);
 	if (!is_skb_forwardable(skb->dev, skb))
 		goto drop;

-	skb_push(skb, ETH_HLEN);
 	br_drop_fake_rtable(skb);
 	skb_sender_cpu_clear(skb);

@ -88,12 +88,11 @@ static void __br_deliver(const struct net_bridge_port *to, struct sk_buff *skb)
 	skb->dev = to->dev;

 	if (unlikely(netpoll_tx_running(to->br->dev))) {
+		skb_push(skb, ETH_HLEN);
 		if (!is_skb_forwardable(skb->dev, skb))
 			kfree_skb(skb);
-		else {
-			skb_push(skb, ETH_HLEN);
+		else
 			br_netpoll_send_skb(to, skb);
-		}
 		return;
 	}

--- a/net/bridge/br_netfilter_ipv6.c
+++ b/net/bridge/br_netfilter_ipv6.c
@ -131,6 +131,7 @@ int br_validate_ipv6(struct net *net, struct sk_buff *skb)
 					 IPSTATS_MIB_INDISCARDS);
 			goto drop;
 		}
+		hdr = ipv6_hdr(skb);
 	}
 	if (hdr->nexthdr == NEXTHDR_HOP && br_nf_check_hbh_len(skb))
 		goto drop;
--- a/net/bridge/netfilter/nft_reject_bridge.c
+++ b/net/bridge/netfilter/nft_reject_bridge.c
@ -192,6 +192,7 @@ static bool reject6_br_csum_ok(struct sk_buff *skb, int hook)
 	    pskb_trim_rcsum(skb, ntohs(ip6h->payload_len) + sizeof(*ip6h)))
 		return false;

+	ip6h = ipv6_hdr(skb);
 	thoff = ipv6_skip_exthdr(skb, ((u8*)(ip6h+1) - skb->data), &proto, &fo);
 	if (thoff < 0 || thoff >= skb->len || (fo & htons(~0x7)) != 0)
 		return false;
--- a/net/can/bcm.c
+++ b/net/can/bcm.c
@ -67,6 +67,9 @@
 */
 #define MAX_NFRAMES 256

+/* limit timers to 400 days for sending/timeouts */
+#define BCM_TIMER_SEC_MAX (400 * 24 * 60 * 60)
+
 /* use of last_frames[index].can_dlc */
 #define RX_RECV    0x40 /* received data for this element */
 #define RX_THR     0x80 /* element not been sent due to throttle feature */
@ -136,6 +139,22 @@ static inline ktime_t bcm_timeval_to_ktime(struct bcm_timeval tv)
 	return ktime_set(tv.tv_sec, tv.tv_usec * NSEC_PER_USEC);
 }

+/* check limitations for timeval provided by user */
+static bool bcm_is_invalid_tv(struct bcm_msg_head *msg_head)
+{
+	if ((msg_head->ival1.tv_sec < 0) ||
+	    (msg_head->ival1.tv_sec > BCM_TIMER_SEC_MAX) ||
+	    (msg_head->ival1.tv_usec < 0) ||
+	    (msg_head->ival1.tv_usec >= USEC_PER_SEC) ||
+	    (msg_head->ival2.tv_sec < 0) ||
+	    (msg_head->ival2.tv_sec > BCM_TIMER_SEC_MAX) ||
+	    (msg_head->ival2.tv_usec < 0) ||
+	    (msg_head->ival2.tv_usec >= USEC_PER_SEC))
+		return true;
+
+	return false;
+}
+
 #define CFSIZ sizeof(struct can_frame)
 #define OPSIZ sizeof(struct bcm_op)
 #define MHSIZ sizeof(struct bcm_msg_head)
@ -855,6 +874,10 @@ static int bcm_tx_setup(struct bcm_msg_head *msg_head, struct msghdr *msg,
 	if (msg_head->nframes < 1 || msg_head->nframes > MAX_NFRAMES)
 		return -EINVAL;

+	/* check timeval limitations */
+	if ((msg_head->flags & SETTIMER) && bcm_is_invalid_tv(msg_head))
+		return -EINVAL;
+
 	/* check the given can_id */
 	op = bcm_find_op(&bo->tx_ops, msg_head->can_id, ifindex);

@ -1020,6 +1043,10 @@ static int bcm_rx_setup(struct bcm_msg_head *msg_head, struct msghdr *msg,
 	     (!(msg_head->can_id & CAN_RTR_FLAG))))
 		return -EINVAL;

+	/* check timeval limitations */
+	if ((msg_head->flags & SETTIMER) && bcm_is_invalid_tv(msg_head))
+		return -EINVAL;
+
 	/* check the given can_id */
 	op = bcm_find_op(&bo->rx_ops, msg_head->can_id, ifindex);
 	if (op) {
--- a/net/ipv4/fib_frontend.c
+++ b/net/ipv4/fib_frontend.c
@ -187,7 +187,7 @@ static void fib_flush(struct net *net)
 		struct fib_table *tb;

 		hlist_for_each_entry_safe(tb, tmp, head, tb_hlist)
-			flushed += fib_table_flush(tb);
+			flushed += fib_table_flush(tb, false);
 	}

 	if (flushed)
@ -1278,7 +1278,7 @@ static void ip_fib_net_exit(struct net *net)

 		hlist_for_each_entry_safe(tb, tmp, head, tb_hlist) {
 			hlist_del(&tb->tb_hlist);
-			fib_table_flush(tb);
+			fib_table_flush(tb, true);
 			fib_free_table(tb);
 		}
 	}
--- a/net/ipv4/fib_trie.c
+++ b/net/ipv4/fib_trie.c
@ -1806,7 +1806,7 @@ void fib_table_flush_external(struct fib_table *tb)
 }

 /* Caller must hold RTNL. */
-int fib_table_flush(struct fib_table *tb)
+int fib_table_flush(struct fib_table *tb, bool flush_all)
 {
 	struct trie *t = (struct trie *)tb->tb_data;
 	struct key_vector *pn = t->kv;
@ -1850,7 +1850,17 @@ int fib_table_flush(struct fib_table *tb)
 		hlist_for_each_entry_safe(fa, tmp, &n->leaf, fa_list) {
 			struct fib_info *fi = fa->fa_info;

-			if (!fi || !(fi->fib_flags & RTNH_F_DEAD)) {
+			if (!fi ||
+			    (!(fi->fib_flags & RTNH_F_DEAD) &&
+			     !fib_props[fa->fa_type].error)) {
+				slen = fa->fa_slen;
+				continue;
+			}
+
+			/* Do not flush error routes if network namespace is
+			 * not being dismantled
+			 */
+			if (!flush_all && fib_props[fa->fa_type].error) {
 				slen = fa->fa_slen;
 				continue;
 			}
--- a/net/ipv4/ip_input.c
+++ b/net/ipv4/ip_input.c
@ -444,6 +444,7 @@ int ip_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt,
 		goto drop;
 	}

+	iph = ip_hdr(skb);
 	skb->transport_header = skb->network_header + iph->ihl*4;

 	/* Remove any debris in the socket control block */
--- a/net/ipv6/af_inet6.c
+++ b/net/ipv6/af_inet6.c
@ -361,6 +361,9 @@ int inet6_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
 					err = -EINVAL;
 					goto out_unlock;
 				}
+			}
+
+			if (sk->sk_bound_dev_if) {
 				dev = dev_get_by_index_rcu(net, sk->sk_bound_dev_if);
 				if (!dev) {
 					err = -ENODEV;
--- a/net/l2tp/l2tp_core.c
+++ b/net/l2tp/l2tp_core.c
@ -83,8 +83,7 @@
 #define L2TP_SLFLAG_S	   0x40000000
 #define L2TP_SL_SEQ_MASK   0x00ffffff

-#define L2TP_HDR_SIZE_SEQ		10
-#define L2TP_HDR_SIZE_NOSEQ		6
+#define L2TP_HDR_SIZE_MAX		14

 /* Default trace flags */
 #define L2TP_DEFAULT_DEBUG_FLAGS	0
@ -705,11 +704,9 @@ void l2tp_recv_common(struct l2tp_session *session, struct sk_buff *skb,
 				 "%s: recv data ns=%u, session nr=%u\n",
 				 session->name, ns, session->nr);
 		}
+		ptr += 4;
 	}

-	/* Advance past L2-specific header, if present */
-	ptr += session->l2specific_len;
-
 	if (L2TP_SKB_CB(skb)->has_seq) {
 		/* Received a packet with sequence numbers. If we're the LNS,
 		 * check if we sre sending sequence numbers and if not,
@ -860,7 +857,7 @@ static int l2tp_udp_recv_core(struct l2tp_tunnel *tunnel, struct sk_buff *skb,
 	__skb_pull(skb, sizeof(struct udphdr));

 	/* Short packet? */
-	if (!pskb_may_pull(skb, L2TP_HDR_SIZE_SEQ)) {
+	if (!pskb_may_pull(skb, L2TP_HDR_SIZE_MAX)) {
 		l2tp_info(tunnel, L2TP_MSG_DATA,
 			  "%s: recv short packet (len=%d)\n",
 			  tunnel->name, skb->len);
@ -933,6 +930,10 @@ static int l2tp_udp_recv_core(struct l2tp_tunnel *tunnel, struct sk_buff *skb,
 		goto error;
 	}

+	if (tunnel->version == L2TP_HDR_VER_3 &&
+	    l2tp_v3_ensure_opt_in_linear(session, skb, &ptr, &optr))
+		goto error;
+
 	l2tp_recv_common(session, skb, ptr, optr, hdrflags, length, payload_hook);

 	return 0;
@ -1031,21 +1032,20 @@ static int l2tp_build_l2tpv3_header(struct l2tp_session *session, void *buf)
 		memcpy(bufp, &session->cookie[0], session->cookie_len);
 		bufp += session->cookie_len;
 	}
-	if (session->l2specific_len) {
-		if (session->l2specific_type == L2TP_L2SPECTYPE_DEFAULT) {
-			u32 l2h = 0;
-			if (session->send_seq) {
-				l2h = 0x40000000 | session->ns;
-				session->ns++;
-				session->ns &= 0xffffff;
-				l2tp_dbg(session, L2TP_MSG_SEQ,
-					 "%s: updated ns to %u\n",
-					 session->name, session->ns);
-			}
+	if (session->l2specific_type == L2TP_L2SPECTYPE_DEFAULT) {
+		u32 l2h = 0;

-			*((__be32 *) bufp) = htonl(l2h);
+		if (session->send_seq) {
+			l2h = 0x40000000 | session->ns;
+			session->ns++;
+			session->ns &= 0xffffff;
+			l2tp_dbg(session, L2TP_MSG_SEQ,
+				 "%s: updated ns to %u\n",
+				 session->name, session->ns);
 		}
-		bufp += session->l2specific_len;
+
+		*((__be32 *)bufp) = htonl(l2h);
+		bufp += 4;
 	}
 	if (session->offset)
 		bufp += session->offset;
@ -1724,7 +1724,7 @@ int l2tp_session_delete(struct l2tp_session *session)
 EXPORT_SYMBOL_GPL(l2tp_session_delete);

 /* We come here whenever a session's send_seq, cookie_len or
- * l2specific_len parameters are set.
+ * l2specific_type parameters are set.
 */
 void l2tp_session_set_header_len(struct l2tp_session *session, int version)
 {
@ -1733,7 +1733,8 @@ void l2tp_session_set_header_len(struct l2tp_session *session, int version)
 		if (session->send_seq)
 			session->hdr_len += 4;
 	} else {
-		session->hdr_len = 4 + session->cookie_len + session->l2specific_len + session->offset;
+		session->hdr_len = 4 + session->cookie_len + session->offset;
+		session->hdr_len += l2tp_get_l2specific_len(session);
 		if (session->tunnel->encap == L2TP_ENCAPTYPE_UDP)
 			session->hdr_len += 4;
 	}
--- a/net/l2tp/l2tp_core.h
+++ b/net/l2tp/l2tp_core.h
@ -313,6 +313,37 @@ do {									\
 #define l2tp_session_dec_refcount(s) l2tp_session_dec_refcount_1(s)
 #endif

+static inline int l2tp_get_l2specific_len(struct l2tp_session *session)
+{
+	switch (session->l2specific_type) {
+	case L2TP_L2SPECTYPE_DEFAULT:
+		return 4;
+	case L2TP_L2SPECTYPE_NONE:
+	default:
+		return 0;
+	}
+}
+
+static inline int l2tp_v3_ensure_opt_in_linear(struct l2tp_session *session, struct sk_buff *skb,
+					       unsigned char **ptr, unsigned char **optr)
+{
+	int opt_len = session->peer_cookie_len + l2tp_get_l2specific_len(session);
+
+	if (opt_len > 0) {
+		int off = *ptr - *optr;
+
+		if (!pskb_may_pull(skb, off + opt_len))
+			return -1;
+
+		if (skb->data != *optr) {
+			*optr = skb->data;
+			*ptr = skb->data + off;
+		}
+	}
+
+	return 0;
+}
+
 #define l2tp_printk(ptr, type, func, fmt, ...)				\
 do {									\
 	if (((ptr)->debug) & (type))					\
--- a/net/l2tp/l2tp_ip.c
+++ b/net/l2tp/l2tp_ip.c
@ -163,6 +163,9 @@ static int l2tp_ip_recv(struct sk_buff *skb)
 		print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, ptr, length);
 	}

+	if (l2tp_v3_ensure_opt_in_linear(session, skb, &ptr, &optr))
+		goto discard;
+
 	l2tp_recv_common(session, skb, ptr, optr, 0, skb->len, tunnel->recv_payload_hook);

 	return 0;
--- a/net/l2tp/l2tp_ip6.c
+++ b/net/l2tp/l2tp_ip6.c
@ -174,6 +174,9 @@ static int l2tp_ip6_recv(struct sk_buff *skb)
 		print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, ptr, length);
 	}

+	if (l2tp_v3_ensure_opt_in_linear(session, skb, &ptr, &optr))
+		goto discard;
+
 	l2tp_recv_common(session, skb, ptr, optr, 0, skb->len,
 			 tunnel->recv_payload_hook);
 	return 0;
--- a/net/netrom/nr_timer.c
+++ b/net/netrom/nr_timer.c
@ -53,21 +53,21 @@ void nr_start_t1timer(struct sock *sk)
 {
 	struct nr_sock *nr = nr_sk(sk);

-	mod_timer(&nr->t1timer, jiffies + nr->t1);
+	sk_reset_timer(sk, &nr->t1timer, jiffies + nr->t1);
 }

 void nr_start_t2timer(struct sock *sk)
 {
 	struct nr_sock *nr = nr_sk(sk);

-	mod_timer(&nr->t2timer, jiffies + nr->t2);
+	sk_reset_timer(sk, &nr->t2timer, jiffies + nr->t2);
 }

 void nr_start_t4timer(struct sock *sk)
 {
 	struct nr_sock *nr = nr_sk(sk);

-	mod_timer(&nr->t4timer, jiffies + nr->t4);
+	sk_reset_timer(sk, &nr->t4timer, jiffies + nr->t4);
 }

 void nr_start_idletimer(struct sock *sk)
@ -75,37 +75,37 @@ void nr_start_idletimer(struct sock *sk)
 	struct nr_sock *nr = nr_sk(sk);

 	if (nr->idle > 0)
-		mod_timer(&nr->idletimer, jiffies + nr->idle);
+		sk_reset_timer(sk, &nr->idletimer, jiffies + nr->idle);
 }

 void nr_start_heartbeat(struct sock *sk)
 {
-	mod_timer(&sk->sk_timer, jiffies + 5 * HZ);
+	sk_reset_timer(sk, &sk->sk_timer, jiffies + 5 * HZ);
 }

 void nr_stop_t1timer(struct sock *sk)
 {
-	del_timer(&nr_sk(sk)->t1timer);
+	sk_stop_timer(sk, &nr_sk(sk)->t1timer);
 }

 void nr_stop_t2timer(struct sock *sk)
 {
-	del_timer(&nr_sk(sk)->t2timer);
+	sk_stop_timer(sk, &nr_sk(sk)->t2timer);
 }

 void nr_stop_t4timer(struct sock *sk)
 {
-	del_timer(&nr_sk(sk)->t4timer);
+	sk_stop_timer(sk, &nr_sk(sk)->t4timer);
 }

 void nr_stop_idletimer(struct sock *sk)
 {
-	del_timer(&nr_sk(sk)->idletimer);
+	sk_stop_timer(sk, &nr_sk(sk)->idletimer);
 }

 void nr_stop_heartbeat(struct sock *sk)
 {
-	del_timer(&sk->sk_timer);
+	sk_stop_timer(sk, &sk->sk_timer);
 }

 int nr_t1timer_running(struct sock *sk)
--- a/net/openvswitch/flow_netlink.c
+++ b/net/openvswitch/flow_netlink.c
@ -409,7 +409,7 @@ static int __parse_flow_nlattrs(const struct nlattr *attr,
 			return -EINVAL;
 		}

-		if (!nz || !is_all_zero(nla_data(nla), expected_len)) {
+		if (!nz || !is_all_zero(nla_data(nla), nla_len(nla))) {
 			attrs |= 1 << type;
 			a[type] = nla;
 		}
--- a/net/rose/rose_route.c
+++ b/net/rose/rose_route.c
@ -848,6 +848,7 @@ void rose_link_device_down(struct net_device *dev)

 /*
 *	Route a frame to an appropriate AX.25 connection.
+ *	A NULL ax25_cb indicates an internally generated frame.
 */
 int rose_route_frame(struct sk_buff *skb, ax25_cb *ax25)
 {
@ -865,6 +866,10 @@ int rose_route_frame(struct sk_buff *skb, ax25_cb *ax25)

 	if (skb->len < ROSE_MIN_LEN)
 		return res;
+
+	if (!ax25)
+		return rose_loopback_queue(skb, NULL);
+
 	frametype = skb->data[2];
 	lci = ((skb->data[0] << 8) & 0xF00) + ((skb->data[1] << 0) & 0x0FF);
 	if (frametype == ROSE_CALL_REQUEST &&
--- a/net/sched/sch_api.c
+++ b/net/sched/sch_api.c
@ -1823,7 +1823,6 @@ done:
 int tc_classify(struct sk_buff *skb, const struct tcf_proto *tp,
 		struct tcf_result *res, bool compat_mode)
 {
-	__be16 protocol = tc_skb_protocol(skb);
 #ifdef CONFIG_NET_CLS_ACT
 	const struct tcf_proto *old_tp = tp;
 	int limit = 0;
@ -1831,6 +1830,7 @@ int tc_classify(struct sk_buff *skb, const struct tcf_proto *tp,
 reclassify:
 #endif
 	for (; tp; tp = rcu_dereference_bh(tp->next)) {
+		__be16 protocol = tc_skb_protocol(skb);
 		int err;

 		if (tp->protocol != protocol &&
@ -1857,7 +1857,6 @@ reset:
 	}

 	tp = old_tp;
-	protocol = tc_skb_protocol(skb);
 	goto reclassify;
 #endif
 }
--- a/sound/soc/intel/atom/sst-mfld-platform-pcm.c
+++ b/sound/soc/intel/atom/sst-mfld-platform-pcm.c
@ -398,7 +398,13 @@ static int sst_media_hw_params(struct snd_pcm_substream *substream,
 				struct snd_pcm_hw_params *params,
 				struct snd_soc_dai *dai)
 {
-	snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(params));
+	int ret;
+
+	ret =
+		snd_pcm_lib_malloc_pages(substream,
+				params_buffer_bytes(params));
+	if (ret)
+		return ret;
 	memset(substream->runtime->dma_area, 0, params_buffer_bytes(params));
 	return 0;
 }
--- a/tools/perf/util/unwind-libdw.c
+++ b/tools/perf/util/unwind-libdw.c
@ -41,13 +41,13 @@ static int __report_module(struct addr_location *al, u64 ip,
 		Dwarf_Addr s;

 		dwfl_module_info(mod, NULL, &s, NULL, NULL, NULL, NULL, NULL);
-		if (s != al->map->start)
+		if (s != al->map->start - al->map->pgoff)
 			mod = 0;
 	}

 	if (!mod)
 		mod = dwfl_report_elf(ui->dwfl, dso->short_name,
-				      dso->long_name, -1, al->map->start,
+				      (dso->symsrc_filename ? dso->symsrc_filename : dso->long_name), -1, al->map->start - al->map->pgoff,
 				      false);

 	return mod && dwfl_addrmodule(ui->dwfl, ip) == mod ? 0 : -1;