Re: Linux 4.4.173

From: Greg KH
Date: Wed Feb 06 2019 - 16:11:25 EST

diff --git a/Makefile b/Makefile
index 2aa8db459a74..db7665e32da8 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
VERSION = 4
PATCHLEVEL = 4
-SUBLEVEL = 172
+SUBLEVEL = 173
EXTRAVERSION =
NAME = Blurry Fish Butt

diff --git a/arch/arc/include/asm/perf_event.h b/arch/arc/include/asm/perf_event.h
index 5f071762fb1c..6a2ae61748e4 100644
--- 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",
diff --git a/arch/arm/mach-cns3xxx/pcie.c b/arch/arm/mach-cns3xxx/pcie.c
index 318394ed5c7a..5e11ad3164e0 100644
--- 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,
diff --git a/arch/arm64/kernel/hyp-stub.S b/arch/arm64/kernel/hyp-stub.S
index a272f335c289..096e957aecb0 100644
--- 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)
diff --git a/arch/arm64/mm/flush.c b/arch/arm64/mm/flush.c
index c26b804015e8..a90615baa529 100644
--- a/arch/arm64/mm/flush.c
+++ b/arch/arm64/mm/flush.c
@@ -70,10 +70,6 @@ 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)) {
__flush_dcache_area(page_address(page),
PAGE_SIZE << compound_order(page));
diff --git a/arch/s390/kernel/early.c b/arch/s390/kernel/early.c
index 8eccead675d4..cc7b450a7766 100644
--- 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;
}

diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index e7a43a30e3ff..47692c78d09c 100644
--- 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 */
diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index 77f4f334a465..29e5409c0d48 100644
--- 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);
diff --git a/arch/x86/boot/compressed/aslr.c b/arch/x86/boot/compressed/aslr.c
index 31dab2135188..21332b431f10 100644
--- 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;
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 1a934bb8ed1c..758e2b39567d 100644
--- 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)
diff --git a/drivers/base/core.c b/drivers/base/core.c
index 049ccc070ce5..cb5718d2669e 100644
--- 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);
}
diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index b1cf891cb3d9..ae361ee90587 100644
--- 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;
@@ -1570,11 +1571,9 @@ 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;
@@ -1583,20 +1582,18 @@ 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
@@ -1613,10 +1610,16 @@ 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,
@@ -1896,7 +1899,7 @@ 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);
@@ -1904,7 +1907,7 @@ 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;
@@ -1914,13 +1917,9 @@ static long loop_control_ioctl(struct file *file, unsigned int cmd,
unsigned long parm)
{
struct loop_device *lo;
- int ret;
-
- ret = mutex_lock_killable(&loop_ctl_mutex);
- if (ret)
- return ret;
+ int ret = -ENOSYS;

- ret = -ENOSYS;
+ mutex_lock(&loop_index_mutex);
switch (cmd) {
case LOOP_CTL_ADD:
ret = loop_lookup(&lo, parm);
@@ -1934,15 +1933,19 @@ 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;
@@ -1952,7 +1955,7 @@ 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;
}
@@ -2035,10 +2038,10 @@ 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;
diff --git a/drivers/char/mwave/mwavedd.c b/drivers/char/mwave/mwavedd.c
index 164544afd680..618f3df6c3b9 100644
--- 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;
diff --git a/drivers/input/joystick/xpad.c b/drivers/input/joystick/xpad.c
index f55dcdf99bc5..26476a64e663 100644
--- 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 */
diff --git a/drivers/irqchip/irq-gic-v3-its.c b/drivers/irqchip/irq-gic-v3-its.c
index c3d7a1461043..114d5883d497 100644
--- 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;
diff --git a/drivers/mmc/host/sdhci-iproc.c b/drivers/mmc/host/sdhci-iproc.c
index ffd448149796..4a2ae06d0da4 100644
--- 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 */
diff --git a/drivers/net/can/dev.c b/drivers/net/can/dev.c
index 1dbee1cb3df9..8b7c6425b681 100644
--- 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;

- /* 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 skb;
+ return NULL;
}

/*
diff --git a/drivers/net/ethernet/freescale/ucc_geth.c b/drivers/net/ethernet/freescale/ucc_geth.c
index 650f7888e32b..55ac00055977 100644
--- 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;

diff --git a/drivers/net/ethernet/mellanox/mlx4/fw.c b/drivers/net/ethernet/mellanox/mlx4/fw.c
index 90db94e83fde..033f99d2f15c 100644
--- 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);
diff --git a/drivers/net/ppp/pppoe.c b/drivers/net/ppp/pppoe.c
index 583d50f80b24..02327e6c4819 100644
--- 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)
diff --git a/drivers/platform/x86/asus-nb-wmi.c b/drivers/platform/x86/asus-nb-wmi.c
index 852d2de7f69f..a284a2b42bcd 100644
--- 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 */
diff --git a/drivers/s390/char/sclp_config.c b/drivers/s390/char/sclp_config.c
index 944156207477..dcb949dcfa66 100644
--- 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)
diff --git a/drivers/staging/rtl8188eu/os_dep/usb_intf.c b/drivers/staging/rtl8188eu/os_dep/usb_intf.c
index c2d2c17550a7..951f22265105 100644
--- 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 */
diff --git a/drivers/tty/n_hdlc.c b/drivers/tty/n_hdlc.c
index 6d1e2f746ab4..8d6253903f24 100644
--- 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
diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c
index c1cff2b455ae..5b86ebc76a8a 100644
--- 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;
}
diff --git a/drivers/tty/vt/vt.c b/drivers/tty/vt/vt.c
index ff3286fc22d8..6779f733bb83 100644
--- 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;
}

diff --git a/drivers/usb/serial/pl2303.c b/drivers/usb/serial/pl2303.c
index 4966768d3c98..9706d214c409 100644
--- 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) },
diff --git a/drivers/usb/serial/pl2303.h b/drivers/usb/serial/pl2303.h
index a84f0959ab34..d84c3b3d477b 100644
--- 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
diff --git a/drivers/usb/serial/usb-serial-simple.c b/drivers/usb/serial/usb-serial-simple.c
index 6d6acf2c07c3..511242111403 100644
--- 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 */
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 1eeb4780c3ed..eacf57c24ca9 100644
--- 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 {
diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c
index 2725085a3f9f..eae3cdffaf7f 100644
--- 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);

diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c
index f7111bb88ec1..5e21d58c49ef 100644
--- 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;
}

diff --git a/fs/dcache.c b/fs/dcache.c
index 141651b0c766..9ffe60702299 100644
--- 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);
diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index 3685fea62333..582373849332 100644
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -590,6 +590,7 @@ static void truncate_node(struct dnode_of_data *dn)
{
struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode);
struct node_info ni;
+ pgoff_t index;

get_node_info(sbi, dn->nid, &ni);
if (dn->inode->i_blocks == 0) {
@@ -613,10 +614,11 @@ invalidate:
clear_node_page_dirty(dn->node_page);
set_sbi_flag(sbi, SBI_IS_DIRTY);

+ index = dn->node_page->index;
f2fs_put_page(dn->node_page, 1);

invalidate_mapping_pages(NODE_MAPPING(sbi),
- dn->node_page->index, dn->node_page->index);
+ index, index);

dn->node_page = NULL;
trace_f2fs_truncate_node(dn->inode, dn->nid, ni.blk_addr);
diff --git a/fs/gfs2/rgrp.c b/fs/gfs2/rgrp.c
index 763fe7737065..ef24894edecc 100644
--- 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;
diff --git a/fs/read_write.c b/fs/read_write.c
index bfd1a5dddf6e..16e554ba885d 100644
--- 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);
diff --git a/fs/super.c b/fs/super.c
index 09b526a50986..b9cd7982f6e2 100644
--- 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);

@@ -1133,6 +1143,14 @@ mount_fs(struct file_system_type *type, int flags, const char *name, void *data)
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);
diff --git a/include/linux/kobject.h b/include/linux/kobject.h
index e6284591599e..5957c6a3fd7f 100644
--- 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;
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index a490dd718654..6d39d81d3c38 100644
--- 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)
diff --git a/include/net/ip_fib.h b/include/net/ip_fib.h
index 2a25b53cd427..f6ff83b2ac87 100644
--- 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);
diff --git a/kernel/exit.c b/kernel/exit.c
index f20e6339761b..03f6722302b5 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -450,12 +450,14 @@ 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;
@@ -471,6 +473,12 @@ 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);

@@ -557,7 +565,7 @@ 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;

diff --git a/mm/migrate.c b/mm/migrate.c
index afedcfab60e2..ce88dff1da98 100644
--- 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
diff --git a/mm/oom_kill.c b/mm/oom_kill.c
index c12680993ff3..bc781cdc0d04 100644
--- a/mm/oom_kill.c
+++ b/mm/oom_kill.c
@@ -544,6 +544,13 @@ 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;
@@ -563,6 +570,7 @@ 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);
diff --git a/net/bridge/br_forward.c b/net/bridge/br_forward.c
index fcdb86dd5a23..c21209aada8c 100644
--- 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;
}

diff --git a/net/bridge/br_netfilter_ipv6.c b/net/bridge/br_netfilter_ipv6.c
index d61f56efc8dc..69dfd212e50d 100644
--- 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;
diff --git a/net/bridge/netfilter/nft_reject_bridge.c b/net/bridge/netfilter/nft_reject_bridge.c
index fdba3d9fbff3..6e48aa69fa24 100644
--- 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;
diff --git a/net/can/bcm.c b/net/can/bcm.c
index 4ccfd356baed..1f15622d3c65 100644
--- 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) {
diff --git a/net/ipv4/fib_frontend.c b/net/ipv4/fib_frontend.c
index ce646572b912..1f7b47ca2243 100644
--- 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)
@@ -1277,7 +1277,7 @@ 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);
}
}
diff --git a/net/ipv4/fib_trie.c b/net/ipv4/fib_trie.c
index 5c598f99a500..fdaa905dccdd 100644
--- 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;
}
diff --git a/net/ipv4/ip_input.c b/net/ipv4/ip_input.c
index b1209b63381f..eb1834f2682f 100644
--- 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 */
diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
index d6f2dab28d14..f9a4447ca002 100644
--- a/net/ipv6/af_inet6.c
+++ b/net/ipv6/af_inet6.c
@@ -345,6 +345,9 @@ 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;
diff --git a/net/l2tp/l2tp_core.c b/net/l2tp/l2tp_core.c
index 591d18785285..429dbb064240 100644
--- 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;
}
diff --git a/net/l2tp/l2tp_core.h b/net/l2tp/l2tp_core.h
index 9cf546846edb..fad47e9d74bc 100644
--- 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)) \
diff --git a/net/l2tp/l2tp_ip.c b/net/l2tp/l2tp_ip.c
index af74e3ba0f92..7efb3cadc152 100644
--- 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;
diff --git a/net/l2tp/l2tp_ip6.c b/net/l2tp/l2tp_ip6.c
index 591d308bf63a..e066111b9398 100644
--- 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;
diff --git a/net/netrom/nr_timer.c b/net/netrom/nr_timer.c
index 94d05806a9a2..f0ecaec1ff3d 100644
--- 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)
diff --git a/net/openvswitch/flow_netlink.c b/net/openvswitch/flow_netlink.c
index 624c4719e404..537917dfa83a 100644
--- 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;
}
diff --git a/net/rose/rose_route.c b/net/rose/rose_route.c
index 0fc76d845103..9f704a7f2a28 100644
--- 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 &&
diff --git a/net/sched/sch_api.c b/net/sched/sch_api.c
index 6d340cd6e2a7..b379c330a338 100644
--- 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
}
diff --git a/sound/soc/intel/atom/sst-mfld-platform-pcm.c b/sound/soc/intel/atom/sst-mfld-platform-pcm.c
index 2b96b11fbe71..1d9dfb92b3b4 100644
--- 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;
}
diff --git a/tools/perf/util/unwind-libdw.c b/tools/perf/util/unwind-libdw.c
index 60edec383281..bf5ee8906fb2 100644
--- 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;