Re: Linux 3.18.133

From: Greg KH
Date: Sat Jan 26 2019 - 04:29:37 EST

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diff --git a/Documentation/filesystems/proc.txt b/Documentation/filesystems/proc.txt
index 04b23a83ce68..3172a2465ff2 100644
--- a/Documentation/filesystems/proc.txt
+++ b/Documentation/filesystems/proc.txt
@@ -439,7 +439,9 @@ manner. The codes are the following:

Note that there is no guarantee that every flag and associated mnemonic will
be present in all further kernel releases. Things get changed, the flags may
-be vanished or the reverse -- new added.
+be vanished or the reverse -- new added. Interpretation of their meaning
+might change in future as well. So each consumer of these flags has to
+follow each specific kernel version for the exact semantic.

This file is only present if the CONFIG_MMU kernel configuration option is
enabled.
diff --git a/Makefile b/Makefile
index 04ea07d98592..487a367b924d 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
VERSION = 3
PATCHLEVEL = 18
-SUBLEVEL = 132
+SUBLEVEL = 133
EXTRAVERSION =
NAME = Diseased Newt

diff --git a/arch/arm/mach-imx/clk-imx6q.c b/arch/arm/mach-imx/clk-imx6q.c
index 5474a76803f0..936ed9bae595 100644
--- a/arch/arm/mach-imx/clk-imx6q.c
+++ b/arch/arm/mach-imx/clk-imx6q.c
@@ -222,8 +222,12 @@ static void __init imx6q_clocks_init(struct device_node *ccm_node)
* lvds1_gate and lvds2_gate are pseudo-gates. Both can be
* independently configured as clock inputs or outputs. We treat
* the "output_enable" bit as a gate, even though it's really just
- * enabling clock output.
+ * enabling clock output. Initially the gate bits are cleared, as
+ * otherwise the exclusive configuration gets locked in the setup done
+ * by software running before the clock driver, with no way to change
+ * it.
*/
+ writel(readl(base + 0x160) & ~0x3c00, base + 0x160);
clk[IMX6QDL_CLK_LVDS1_GATE] = imx_clk_gate_exclusive("lvds1_gate", "lvds1_sel", base + 0x160, 10, BIT(12));
clk[IMX6QDL_CLK_LVDS2_GATE] = imx_clk_gate_exclusive("lvds2_gate", "lvds2_sel", base + 0x160, 11, BIT(13));

diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 9536ef912f59..077ae203e8f9 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -627,6 +627,7 @@ config SIBYTE_SWARM
select SYS_SUPPORTS_HIGHMEM
select SYS_SUPPORTS_LITTLE_ENDIAN
select ZONE_DMA32 if 64BIT
+ select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI

config SIBYTE_LITTLESUR
bool "Sibyte BCM91250C2-LittleSur"
@@ -649,6 +650,7 @@ config SIBYTE_SENTOSA
select SYS_HAS_CPU_SB1
select SYS_SUPPORTS_BIG_ENDIAN
select SYS_SUPPORTS_LITTLE_ENDIAN
+ select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI

config SIBYTE_BIGSUR
bool "Sibyte BCM91480B-BigSur"
@@ -662,6 +664,7 @@ config SIBYTE_BIGSUR
select SYS_SUPPORTS_HIGHMEM
select SYS_SUPPORTS_LITTLE_ENDIAN
select ZONE_DMA32 if 64BIT
+ select SWIOTLB if ARCH_DMA_ADDR_T_64BIT && PCI

config SNI_RM
bool "SNI RM200/300/400"
diff --git a/arch/mips/pci/msi-octeon.c b/arch/mips/pci/msi-octeon.c
index 63bbe07a1ccd..d25be400160e 100644
--- a/arch/mips/pci/msi-octeon.c
+++ b/arch/mips/pci/msi-octeon.c
@@ -369,7 +369,9 @@ int __init octeon_msi_initialize(void)
int irq;
struct irq_chip *msi;

- if (octeon_dma_bar_type == OCTEON_DMA_BAR_TYPE_PCIE) {
+ if (octeon_dma_bar_type == OCTEON_DMA_BAR_TYPE_INVALID) {
+ return 0;
+ } else if (octeon_dma_bar_type == OCTEON_DMA_BAR_TYPE_PCIE) {
msi_rcv_reg[0] = CVMX_PEXP_NPEI_MSI_RCV0;
msi_rcv_reg[1] = CVMX_PEXP_NPEI_MSI_RCV1;
msi_rcv_reg[2] = CVMX_PEXP_NPEI_MSI_RCV2;
diff --git a/arch/mips/sibyte/common/Makefile b/arch/mips/sibyte/common/Makefile
index b3d6bf23a662..3ef3fb658136 100644
--- a/arch/mips/sibyte/common/Makefile
+++ b/arch/mips/sibyte/common/Makefile
@@ -1,4 +1,5 @@
obj-y := cfe.o
+obj-$(CONFIG_SWIOTLB) += dma.o
obj-$(CONFIG_SIBYTE_BUS_WATCHER) += bus_watcher.o
obj-$(CONFIG_SIBYTE_CFE_CONSOLE) += cfe_console.o
obj-$(CONFIG_SIBYTE_TBPROF) += sb_tbprof.o
diff --git a/arch/mips/sibyte/common/dma.c b/arch/mips/sibyte/common/dma.c
new file mode 100644
index 000000000000..eb47a94f3583
--- /dev/null
+++ b/arch/mips/sibyte/common/dma.c
@@ -0,0 +1,14 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * DMA support for Broadcom SiByte platforms.
+ *
+ * Copyright (c) 2018 Maciej W. Rozycki
+ */
+
+#include <linux/swiotlb.h>
+#include <asm/bootinfo.h>
+
+void __init plat_swiotlb_setup(void)
+{
+ swiotlb_init(1);
+}
diff --git a/arch/sparc/kernel/signal_32.c b/arch/sparc/kernel/signal_32.c
index 8492291424ab..d6ab14c2353d 100644
--- a/arch/sparc/kernel/signal_32.c
+++ b/arch/sparc/kernel/signal_32.c
@@ -89,7 +89,7 @@ asmlinkage void do_sigreturn(struct pt_regs *regs)
sf = (struct signal_frame __user *) regs->u_regs[UREG_FP];

/* 1. Make sure we are not getting garbage from the user */
- if (!invalid_frame_pointer(sf, sizeof(*sf)))
+ if (invalid_frame_pointer(sf, sizeof(*sf)))
goto segv_and_exit;

if (get_user(ufp, &sf->info.si_regs.u_regs[UREG_FP]))
@@ -150,7 +150,7 @@ asmlinkage void do_rt_sigreturn(struct pt_regs *regs)

synchronize_user_stack();
sf = (struct rt_signal_frame __user *) regs->u_regs[UREG_FP];
- if (!invalid_frame_pointer(sf, sizeof(*sf)))
+ if (invalid_frame_pointer(sf, sizeof(*sf)))
goto segv;

if (get_user(ufp, &sf->regs.u_regs[UREG_FP]))
diff --git a/crypto/authenc.c b/crypto/authenc.c
index eb029ea72f98..d0245ff3e736 100644
--- a/crypto/authenc.c
+++ b/crypto/authenc.c
@@ -62,14 +62,22 @@ int crypto_authenc_extractkeys(struct crypto_authenc_keys *keys, const u8 *key,
return -EINVAL;
if (rta->rta_type != CRYPTO_AUTHENC_KEYA_PARAM)
return -EINVAL;
- if (RTA_PAYLOAD(rta) < sizeof(*param))
+
+ /*
+ * RTA_OK() didn't align the rtattr's payload when validating that it
+ * fits in the buffer. Yet, the keys should start on the next 4-byte
+ * aligned boundary. To avoid confusion, require that the rtattr
+ * payload be exactly the param struct, which has a 4-byte aligned size.
+ */
+ if (RTA_PAYLOAD(rta) != sizeof(*param))
return -EINVAL;
+ BUILD_BUG_ON(sizeof(*param) % RTA_ALIGNTO);

param = RTA_DATA(rta);
keys->enckeylen = be32_to_cpu(param->enckeylen);

- key += RTA_ALIGN(rta->rta_len);
- keylen -= RTA_ALIGN(rta->rta_len);
+ key += rta->rta_len;
+ keylen -= rta->rta_len;

if (keylen < keys->enckeylen)
return -EINVAL;
diff --git a/crypto/cts.c b/crypto/cts.c
index bd9405820e8a..b4ef246995f9 100644
--- a/crypto/cts.c
+++ b/crypto/cts.c
@@ -137,8 +137,8 @@ static int crypto_cts_encrypt(struct blkcipher_desc *desc,
lcldesc.info = desc->info;
lcldesc.flags = desc->flags;

- if (tot_blocks == 1) {
- err = crypto_blkcipher_encrypt_iv(&lcldesc, dst, src, bsize);
+ if (tot_blocks <= 1) {
+ err = crypto_blkcipher_encrypt_iv(&lcldesc, dst, src, nbytes);
} else if (nbytes <= bsize * 2) {
err = cts_cbc_encrypt(ctx, desc, dst, src, 0, nbytes);
} else {
@@ -232,8 +232,8 @@ static int crypto_cts_decrypt(struct blkcipher_desc *desc,
lcldesc.info = desc->info;
lcldesc.flags = desc->flags;

- if (tot_blocks == 1) {
- err = crypto_blkcipher_decrypt_iv(&lcldesc, dst, src, bsize);
+ if (tot_blocks <= 1) {
+ err = crypto_blkcipher_decrypt_iv(&lcldesc, dst, src, nbytes);
} else if (nbytes <= bsize * 2) {
err = cts_cbc_decrypt(ctx, desc, dst, src, 0, nbytes);
} else {
diff --git a/drivers/acpi/power.c b/drivers/acpi/power.c
index 39b18f74a539..27b4ceb9276c 100644
--- a/drivers/acpi/power.c
+++ b/drivers/acpi/power.c
@@ -132,6 +132,23 @@ void acpi_power_resources_list_free(struct list_head *list)
}
}

+static bool acpi_power_resource_is_dup(union acpi_object *package,
+ unsigned int start, unsigned int i)
+{
+ acpi_handle rhandle, dup;
+ unsigned int j;
+
+ /* The caller is expected to check the package element types */
+ rhandle = package->package.elements[i].reference.handle;
+ for (j = start; j < i; j++) {
+ dup = package->package.elements[j].reference.handle;
+ if (dup == rhandle)
+ return true;
+ }
+
+ return false;
+}
+
int acpi_extract_power_resources(union acpi_object *package, unsigned int start,
struct list_head *list)
{
@@ -151,6 +168,11 @@ int acpi_extract_power_resources(union acpi_object *package, unsigned int start,
err = -ENODEV;
break;
}
+
+ /* Some ACPI tables contain duplicate power resource references */
+ if (acpi_power_resource_is_dup(package, start, i))
+ continue;
+
err = acpi_add_power_resource(rhandle);
if (err)
break;
diff --git a/drivers/base/bus.c b/drivers/base/bus.c
index 07ea8608fb0b..c05561e26d85 100644
--- a/drivers/base/bus.c
+++ b/drivers/base/bus.c
@@ -32,6 +32,9 @@ static struct kset *system_kset;

#define to_drv_attr(_attr) container_of(_attr, struct driver_attribute, attr)

+#define DRIVER_ATTR_IGNORE_LOCKDEP(_name, _mode, _show, _store) \
+ struct driver_attribute driver_attr_##_name = \
+ __ATTR_IGNORE_LOCKDEP(_name, _mode, _show, _store)

static int __must_check bus_rescan_devices_helper(struct device *dev,
void *data);
@@ -197,7 +200,7 @@ static ssize_t unbind_store(struct device_driver *drv, const char *buf,
bus_put(bus);
return err;
}
-static DRIVER_ATTR_WO(unbind);
+static DRIVER_ATTR_IGNORE_LOCKDEP(unbind, S_IWUSR, NULL, unbind_store);

/*
* Manually attach a device to a driver.
@@ -233,7 +236,7 @@ static ssize_t bind_store(struct device_driver *drv, const char *buf,
bus_put(bus);
return err;
}
-static DRIVER_ATTR_WO(bind);
+static DRIVER_ATTR_IGNORE_LOCKDEP(bind, S_IWUSR, NULL, bind_store);

static ssize_t show_drivers_autoprobe(struct bus_type *bus, char *buf)
{
diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index 15157a3eabb4..a467dc43c389 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -81,6 +81,7 @@

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

static int max_part;
static int part_shift;
@@ -1012,7 +1013,7 @@ static int loop_clr_fd(struct loop_device *lo)
*/
if (lo->lo_refcnt > 1) {
lo->lo_flags |= LO_FLAGS_AUTOCLEAR;
- mutex_unlock(&lo->lo_ctl_mutex);
+ mutex_unlock(&loop_ctl_mutex);
return 0;
}

@@ -1061,12 +1062,12 @@ static int loop_clr_fd(struct loop_device *lo)
lo->lo_flags = 0;
if (!part_shift)
lo->lo_disk->flags |= GENHD_FL_NO_PART_SCAN;
- mutex_unlock(&lo->lo_ctl_mutex);
+ mutex_unlock(&loop_ctl_mutex);
/*
- * Need not hold lo_ctl_mutex to fput backing file.
- * Calling fput holding lo_ctl_mutex triggers a circular
+ * Need not hold loop_ctl_mutex to fput backing file.
+ * Calling fput holding loop_ctl_mutex triggers a circular
* lock dependency possibility warning as fput can take
- * bd_mutex which is usually taken before lo_ctl_mutex.
+ * bd_mutex which is usually taken before loop_ctl_mutex.
*/
fput(filp);
return 0;
@@ -1300,7 +1301,7 @@ static int lo_ioctl(struct block_device *bdev, fmode_t mode,
struct loop_device *lo = bdev->bd_disk->private_data;
int err;

- mutex_lock_nested(&lo->lo_ctl_mutex, 1);
+ mutex_lock_nested(&loop_ctl_mutex, 1);
switch (cmd) {
case LOOP_SET_FD:
err = loop_set_fd(lo, mode, bdev, arg);
@@ -1309,7 +1310,7 @@ static int lo_ioctl(struct block_device *bdev, fmode_t mode,
err = loop_change_fd(lo, bdev, arg);
break;
case LOOP_CLR_FD:
- /* loop_clr_fd would have unlocked lo_ctl_mutex on success */
+ /* loop_clr_fd would have unlocked loop_ctl_mutex on success */
err = loop_clr_fd(lo);
if (!err)
goto out_unlocked;
@@ -1340,7 +1341,7 @@ static int lo_ioctl(struct block_device *bdev, fmode_t mode,
default:
err = lo->ioctl ? lo->ioctl(lo, cmd, arg) : -EINVAL;
}
- mutex_unlock(&lo->lo_ctl_mutex);
+ mutex_unlock(&loop_ctl_mutex);

out_unlocked:
return err;
@@ -1473,16 +1474,16 @@ static int lo_compat_ioctl(struct block_device *bdev, fmode_t mode,

switch(cmd) {
case LOOP_SET_STATUS:
- mutex_lock(&lo->lo_ctl_mutex);
+ mutex_lock(&loop_ctl_mutex);
err = loop_set_status_compat(
lo, (const struct compat_loop_info __user *) arg);
- mutex_unlock(&lo->lo_ctl_mutex);
+ mutex_unlock(&loop_ctl_mutex);
break;
case LOOP_GET_STATUS:
- mutex_lock(&lo->lo_ctl_mutex);
+ mutex_lock(&loop_ctl_mutex);
err = loop_get_status_compat(
lo, (struct compat_loop_info __user *) arg);
- mutex_unlock(&lo->lo_ctl_mutex);
+ mutex_unlock(&loop_ctl_mutex);
break;
case LOOP_SET_CAPACITY:
case LOOP_CLR_FD:
@@ -1513,9 +1514,9 @@ static int lo_open(struct block_device *bdev, fmode_t mode)
goto out;
}

- mutex_lock(&lo->lo_ctl_mutex);
+ mutex_lock(&loop_ctl_mutex);
lo->lo_refcnt++;
- mutex_unlock(&lo->lo_ctl_mutex);
+ mutex_unlock(&loop_ctl_mutex);
out:
mutex_unlock(&loop_index_mutex);
return err;
@@ -1525,7 +1526,7 @@ static void __lo_release(struct loop_device *lo)
{
int err;

- mutex_lock(&lo->lo_ctl_mutex);
+ mutex_lock(&loop_ctl_mutex);

if (--lo->lo_refcnt)
goto out;
@@ -1547,7 +1548,7 @@ static void __lo_release(struct loop_device *lo)
}

out:
- mutex_unlock(&lo->lo_ctl_mutex);
+ mutex_unlock(&loop_ctl_mutex);
}

static void lo_release(struct gendisk *disk, fmode_t mode)
@@ -1593,10 +1594,10 @@ static int unregister_transfer_cb(int id, void *ptr, void *data)
struct loop_device *lo = ptr;
struct loop_func_table *xfer = data;

- mutex_lock(&lo->lo_ctl_mutex);
+ mutex_lock(&loop_ctl_mutex);
if (lo->lo_encryption == xfer)
loop_release_xfer(lo);
- mutex_unlock(&lo->lo_ctl_mutex);
+ mutex_unlock(&loop_ctl_mutex);
return 0;
}

@@ -1677,7 +1678,7 @@ static int loop_add(struct loop_device **l, int i)
if (!part_shift)
disk->flags |= GENHD_FL_NO_PART_SCAN;
disk->flags |= GENHD_FL_EXT_DEVT;
- mutex_init(&lo->lo_ctl_mutex);
+ mutex_init(&loop_ctl_mutex);
lo->lo_number = i;
lo->lo_thread = NULL;
init_waitqueue_head(&lo->lo_event);
@@ -1789,19 +1790,19 @@ static long loop_control_ioctl(struct file *file, unsigned int cmd,
ret = loop_lookup(&lo, parm);
if (ret < 0)
break;
- mutex_lock(&lo->lo_ctl_mutex);
+ mutex_lock(&loop_ctl_mutex);
if (lo->lo_state != Lo_unbound) {
ret = -EBUSY;
- mutex_unlock(&lo->lo_ctl_mutex);
+ mutex_unlock(&loop_ctl_mutex);
break;
}
if (lo->lo_refcnt > 0) {
ret = -EBUSY;
- mutex_unlock(&lo->lo_ctl_mutex);
+ mutex_unlock(&loop_ctl_mutex);
break;
}
lo->lo_disk->private_data = NULL;
- mutex_unlock(&lo->lo_ctl_mutex);
+ mutex_unlock(&loop_ctl_mutex);
idr_remove(&loop_index_idr, lo->lo_number);
loop_remove(lo);
break;
diff --git a/drivers/block/loop.h b/drivers/block/loop.h
index fb113dd45e97..205dfb4767a0 100644
--- a/drivers/block/loop.h
+++ b/drivers/block/loop.h
@@ -55,7 +55,6 @@ struct loop_device {
struct bio_list lo_bio_list;
unsigned int lo_bio_count;
int lo_state;
- struct mutex lo_ctl_mutex;
struct task_struct *lo_thread;
wait_queue_head_t lo_event;
/* wait queue for incoming requests */
diff --git a/drivers/cpuidle/cpuidle-pseries.c b/drivers/cpuidle/cpuidle-pseries.c
index 6f7b01956885..b755d3a54e3c 100644
--- a/drivers/cpuidle/cpuidle-pseries.c
+++ b/drivers/cpuidle/cpuidle-pseries.c
@@ -237,7 +237,13 @@ static int pseries_idle_probe(void)
return -ENODEV;

if (firmware_has_feature(FW_FEATURE_SPLPAR)) {
- if (lppaca_shared_proc(get_lppaca())) {
+ /*
+ * Use local_paca instead of get_lppaca() since
+ * preemption is not disabled, and it is not required in
+ * fact, since lppaca_ptr does not need to be the value
+ * associated to the current CPU, it can be from any CPU.
+ */
+ if (lppaca_shared_proc(local_paca->lppaca_ptr)) {
cpuidle_state_table = shared_states;
max_idle_state = ARRAY_SIZE(shared_states);
} else {
diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c
index 1e41f466055c..3fee88cffdff 100644
--- a/drivers/gpu/drm/drm_fb_helper.c
+++ b/drivers/gpu/drm/drm_fb_helper.c
@@ -822,9 +822,14 @@ int drm_fb_helper_check_var(struct fb_var_screeninfo *var,
struct drm_framebuffer *fb = fb_helper->fb;
int depth;

- if (var->pixclock != 0 || in_dbg_master())
+ if (in_dbg_master())
return -EINVAL;

+ if (var->pixclock != 0) {
+ DRM_DEBUG("fbdev emulation doesn't support changing the pixel clock, value of pixclock is ignored\n");
+ var->pixclock = 0;
+ }
+
/* Need to resize the fb object !!! */
if (var->bits_per_pixel > fb->bits_per_pixel ||
var->xres > fb->width || var->yres > fb->height ||
diff --git a/drivers/i2c/i2c-dev.c b/drivers/i2c/i2c-dev.c
index 71c7a3975b62..b0f943536c1d 100644
--- a/drivers/i2c/i2c-dev.c
+++ b/drivers/i2c/i2c-dev.c
@@ -462,9 +462,15 @@ static long i2cdev_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
return i2cdev_ioctl_smbus(client, arg);

case I2C_RETRIES:
+ if (arg > INT_MAX)
+ return -EINVAL;
+
client->adapter->retries = arg;
break;
case I2C_TIMEOUT:
+ if (arg > INT_MAX)
+ return -EINVAL;
+
/* For historical reasons, user-space sets the timeout
* value in units of 10 ms.
*/
diff --git a/drivers/md/dm-kcopyd.c b/drivers/md/dm-kcopyd.c
index 77833b65e01e..9e626e5df2f6 100644
--- a/drivers/md/dm-kcopyd.c
+++ b/drivers/md/dm-kcopyd.c
@@ -55,15 +55,17 @@ struct dm_kcopyd_client {
struct dm_kcopyd_throttle *throttle;

/*
- * We maintain three lists of jobs:
+ * We maintain four lists of jobs:
*
* i) jobs waiting for pages
* ii) jobs that have pages, and are waiting for the io to be issued.
- * iii) jobs that have completed.
+ * iii) jobs that don't need to do any IO and just run a callback
+ * iv) jobs that have completed.
*
- * All three of these are protected by job_lock.
+ * All four of these are protected by job_lock.
*/
spinlock_t job_lock;
+ struct list_head callback_jobs;
struct list_head complete_jobs;
struct list_head io_jobs;
struct list_head pages_jobs;
@@ -583,6 +585,7 @@ static void do_work(struct work_struct *work)
struct dm_kcopyd_client *kc = container_of(work,
struct dm_kcopyd_client, kcopyd_work);
struct blk_plug plug;
+ unsigned long flags;

/*
* The order that these are called is *very* important.
@@ -591,6 +594,10 @@ static void do_work(struct work_struct *work)
* list. io jobs call wake when they complete and it all
* starts again.
*/
+ spin_lock_irqsave(&kc->job_lock, flags);
+ list_splice_tail_init(&kc->callback_jobs, &kc->complete_jobs);
+ spin_unlock_irqrestore(&kc->job_lock, flags);
+
blk_start_plug(&plug);
process_jobs(&kc->complete_jobs, kc, run_complete_job);
process_jobs(&kc->pages_jobs, kc, run_pages_job);
@@ -608,7 +615,7 @@ static void dispatch_job(struct kcopyd_job *job)
struct dm_kcopyd_client *kc = job->kc;
atomic_inc(&kc->nr_jobs);
if (unlikely(!job->source.count))
- push(&kc->complete_jobs, job);
+ push(&kc->callback_jobs, job);
else if (job->pages == &zero_page_list)
push(&kc->io_jobs, job);
else
@@ -795,7 +802,7 @@ void dm_kcopyd_do_callback(void *j, int read_err, unsigned long write_err)
job->read_err = read_err;
job->write_err = write_err;

- push(&kc->complete_jobs, job);
+ push(&kc->callback_jobs, job);
wake(kc);
}
EXPORT_SYMBOL(dm_kcopyd_do_callback);
@@ -825,6 +832,7 @@ struct dm_kcopyd_client *dm_kcopyd_client_create(struct dm_kcopyd_throttle *thro
return ERR_PTR(-ENOMEM);

spin_lock_init(&kc->job_lock);
+ INIT_LIST_HEAD(&kc->callback_jobs);
INIT_LIST_HEAD(&kc->complete_jobs);
INIT_LIST_HEAD(&kc->io_jobs);
INIT_LIST_HEAD(&kc->pages_jobs);
@@ -874,6 +882,7 @@ void dm_kcopyd_client_destroy(struct dm_kcopyd_client *kc)
/* Wait for completion of all jobs submitted by this client. */
wait_event(kc->destroyq, !atomic_read(&kc->nr_jobs));

+ BUG_ON(!list_empty(&kc->callback_jobs));
BUG_ON(!list_empty(&kc->complete_jobs));
BUG_ON(!list_empty(&kc->io_jobs));
BUG_ON(!list_empty(&kc->pages_jobs));
diff --git a/drivers/md/dm-snap.c b/drivers/md/dm-snap.c
index b91b39caf7a9..0a304e7de260 100644
--- a/drivers/md/dm-snap.c
+++ b/drivers/md/dm-snap.c
@@ -19,6 +19,7 @@
#include <linux/vmalloc.h>
#include <linux/log2.h>
#include <linux/dm-kcopyd.h>
+#include <linux/semaphore.h>

#include "dm.h"

@@ -98,6 +99,9 @@ struct dm_snapshot {
/* The on disk metadata handler */
struct dm_exception_store *store;

+ /* Maximum number of in-flight COW jobs. */
+ struct semaphore cow_count;
+
struct dm_kcopyd_client *kcopyd_client;

/* Wait for events based on state_bits */
@@ -138,6 +142,19 @@ struct dm_snapshot {
#define RUNNING_MERGE 0
#define SHUTDOWN_MERGE 1

+/*
+ * Maximum number of chunks being copied on write.
+ *
+ * The value was decided experimentally as a trade-off between memory
+ * consumption, stalling the kernel's workqueues and maintaining a high enough
+ * throughput.
+ */
+#define DEFAULT_COW_THRESHOLD 2048
+
+static int cow_threshold = DEFAULT_COW_THRESHOLD;
+module_param_named(snapshot_cow_threshold, cow_threshold, int, 0644);
+MODULE_PARM_DESC(snapshot_cow_threshold, "Maximum number of chunks being copied on write");
+
DECLARE_DM_KCOPYD_THROTTLE_WITH_MODULE_PARM(snapshot_copy_throttle,
"A percentage of time allocated for copy on write");

@@ -1173,6 +1190,8 @@ static int snapshot_ctr(struct dm_target *ti, unsigned int argc, char **argv)
goto bad_hash_tables;
}

+ sema_init(&s->cow_count, (cow_threshold > 0) ? cow_threshold : INT_MAX);
+
s->kcopyd_client = dm_kcopyd_client_create(&dm_kcopyd_throttle);
if (IS_ERR(s->kcopyd_client)) {
r = PTR_ERR(s->kcopyd_client);
@@ -1545,6 +1564,7 @@ static void copy_callback(int read_err, unsigned long write_err, void *context)
}
list_add(&pe->out_of_order_entry, lh);
}
+ up(&s->cow_count);
}

/*
@@ -1568,6 +1588,7 @@ static void start_copy(struct dm_snap_pending_exception *pe)
dest.count = src.count;

/* Hand over to kcopyd */
+ down(&s->cow_count);
dm_kcopyd_copy(s->kcopyd_client, &src, 1, &dest, 0, copy_callback, pe);
}

@@ -1588,6 +1609,7 @@ static void start_full_bio(struct dm_snap_pending_exception *pe,
pe->full_bio_end_io = bio->bi_end_io;
pe->full_bio_private = bio->bi_private;

+ down(&s->cow_count);
callback_data = dm_kcopyd_prepare_callback(s->kcopyd_client,
copy_callback, pe);

diff --git a/drivers/media/firewire/firedtv-avc.c b/drivers/media/firewire/firedtv-avc.c
index 251a556112a9..280b5ffea592 100644
--- a/drivers/media/firewire/firedtv-avc.c
+++ b/drivers/media/firewire/firedtv-avc.c
@@ -968,7 +968,8 @@ static int get_ca_object_length(struct avc_response_frame *r)
return r->operand[7];
}

-int avc_ca_app_info(struct firedtv *fdtv, char *app_info, unsigned int *len)
+int avc_ca_app_info(struct firedtv *fdtv, unsigned char *app_info,
+ unsigned int *len)
{
struct avc_command_frame *c = (void *)fdtv->avc_data;
struct avc_response_frame *r = (void *)fdtv->avc_data;
@@ -1009,7 +1010,8 @@ out:
return ret;
}

-int avc_ca_info(struct firedtv *fdtv, char *app_info, unsigned int *len)
+int avc_ca_info(struct firedtv *fdtv, unsigned char *app_info,
+ unsigned int *len)
{
struct avc_command_frame *c = (void *)fdtv->avc_data;
struct avc_response_frame *r = (void *)fdtv->avc_data;
diff --git a/drivers/media/firewire/firedtv.h b/drivers/media/firewire/firedtv.h
index c2ba085e0d20..54853159482e 100644
--- a/drivers/media/firewire/firedtv.h
+++ b/drivers/media/firewire/firedtv.h
@@ -124,8 +124,10 @@ int avc_lnb_control(struct firedtv *fdtv, char voltage, char burst,
struct dvb_diseqc_master_cmd *diseqcmd);
void avc_remote_ctrl_work(struct work_struct *work);
int avc_register_remote_control(struct firedtv *fdtv);
-int avc_ca_app_info(struct firedtv *fdtv, char *app_info, unsigned int *len);
-int avc_ca_info(struct firedtv *fdtv, char *app_info, unsigned int *len);
+int avc_ca_app_info(struct firedtv *fdtv, unsigned char *app_info,
+ unsigned int *len);
+int avc_ca_info(struct firedtv *fdtv, unsigned char *app_info,
+ unsigned int *len);
int avc_ca_reset(struct firedtv *fdtv);
int avc_ca_pmt(struct firedtv *fdtv, char *app_info, int length);
int avc_ca_get_time_date(struct firedtv *fdtv, int *interval);
diff --git a/drivers/media/platform/vivid/vivid-kthread-cap.c b/drivers/media/platform/vivid/vivid-kthread-cap.c
index 39a67cfae120..b947c0471503 100644
--- a/drivers/media/platform/vivid/vivid-kthread-cap.c
+++ b/drivers/media/platform/vivid/vivid-kthread-cap.c
@@ -829,8 +829,11 @@ int vivid_start_generating_vid_cap(struct vivid_dev *dev, bool *pstreaming)
"%s-vid-cap", dev->v4l2_dev.name);

if (IS_ERR(dev->kthread_vid_cap)) {
+ int err = PTR_ERR(dev->kthread_vid_cap);
+
+ dev->kthread_vid_cap = NULL;
v4l2_err(&dev->v4l2_dev, "kernel_thread() failed\n");
- return PTR_ERR(dev->kthread_vid_cap);
+ return err;
}
*pstreaming = true;
vivid_grab_controls(dev, true);
diff --git a/drivers/media/platform/vivid/vivid-kthread-out.c b/drivers/media/platform/vivid/vivid-kthread-out.c
index d9f36ccd7efb..2ce8dc11270d 100644
--- a/drivers/media/platform/vivid/vivid-kthread-out.c
+++ b/drivers/media/platform/vivid/vivid-kthread-out.c
@@ -248,8 +248,11 @@ int vivid_start_generating_vid_out(struct vivid_dev *dev, bool *pstreaming)
"%s-vid-out", dev->v4l2_dev.name);

if (IS_ERR(dev->kthread_vid_out)) {
+ int err = PTR_ERR(dev->kthread_vid_out);
+
+ dev->kthread_vid_out = NULL;
v4l2_err(&dev->v4l2_dev, "kernel_thread() failed\n");
- return PTR_ERR(dev->kthread_vid_out);
+ return err;
}
*pstreaming = true;
vivid_grab_controls(dev, true);
diff --git a/drivers/media/platform/vivid/vivid-vid-common.c b/drivers/media/platform/vivid/vivid-vid-common.c
index 16cd6d2d2ed6..a9fc48deb8eb 100644
--- a/drivers/media/platform/vivid/vivid-vid-common.c
+++ b/drivers/media/platform/vivid/vivid-vid-common.c
@@ -33,7 +33,7 @@ const struct v4l2_dv_timings_cap vivid_dv_timings_cap = {
.type = V4L2_DV_BT_656_1120,
/* keep this initialization for compatibility with GCC < 4.4.6 */
.reserved = { 0 },
- V4L2_INIT_BT_TIMINGS(0, MAX_WIDTH, 0, MAX_HEIGHT, 25000000, 600000000,
+ V4L2_INIT_BT_TIMINGS(16, MAX_WIDTH, 16, MAX_HEIGHT, 25000000, 600000000,
V4L2_DV_BT_STD_CEA861 | V4L2_DV_BT_STD_DMT,
V4L2_DV_BT_CAP_PROGRESSIVE | V4L2_DV_BT_CAP_INTERLACED)
};
diff --git a/drivers/media/usb/em28xx/em28xx-video.c b/drivers/media/usb/em28xx/em28xx-video.c
index 5818872ba47d..e4135f7909bd 100644
--- a/drivers/media/usb/em28xx/em28xx-video.c
+++ b/drivers/media/usb/em28xx/em28xx-video.c
@@ -931,6 +931,8 @@ int em28xx_start_analog_streaming(struct vb2_queue *vq, unsigned int count)

em28xx_videodbg("%s\n", __func__);

+ dev->v4l2->field_count = 0;
+
/* Make sure streaming is not already in progress for this type
of filehandle (e.g. video, vbi) */
rc = res_get(dev, vq->type);
@@ -1141,8 +1143,6 @@ static void em28xx_ctrl_notify(struct v4l2_ctrl *ctrl, void *priv)
{
struct em28xx *dev = priv;

- dev->v4l2->field_count = 0;
-
/*
* In the case of non-AC97 volume controls, we still need
* to do some setups at em28xx, in order to mute/unmute
diff --git a/drivers/media/v4l2-core/videobuf2-core.c b/drivers/media/v4l2-core/videobuf2-core.c
index f0811b7e900d..64900fbae284 100644
--- a/drivers/media/v4l2-core/videobuf2-core.c
+++ b/drivers/media/v4l2-core/videobuf2-core.c
@@ -2474,9 +2474,13 @@ int vb2_mmap(struct vb2_queue *q, struct vm_area_struct *vma)
return -EINVAL;
}
}
+
+ mutex_lock(&q->mmap_lock);
+
if (vb2_fileio_is_active(q)) {
dprintk(1, "mmap: file io in progress\n");
- return -EBUSY;
+ ret = -EBUSY;
+ goto unlock;
}

/*
@@ -2484,7 +2488,7 @@ int vb2_mmap(struct vb2_queue *q, struct vm_area_struct *vma)
*/
ret = __find_plane_by_offset(q, off, &buffer, &plane);
if (ret)
- return ret;
+ goto unlock;

vb = q->bufs[buffer];

@@ -2497,11 +2501,13 @@ int vb2_mmap(struct vb2_queue *q, struct vm_area_struct *vma)
if (length < (vma->vm_end - vma->vm_start)) {
dprintk(1,
"MMAP invalid, as it would overflow buffer length\n");
- return -EINVAL;
+ ret = -EINVAL;
+ goto unlock;
}

- mutex_lock(&q->mmap_lock);
ret = call_memop(vb, mmap, vb->planes[plane].mem_priv, vma);
+
+unlock:
mutex_unlock(&q->mmap_lock);
if (ret)
return ret;
diff --git a/drivers/mfd/tps6586x.c b/drivers/mfd/tps6586x.c
index 8e1dbc469580..e3ad71c494f1 100644
--- a/drivers/mfd/tps6586x.c
+++ b/drivers/mfd/tps6586x.c
@@ -601,6 +601,29 @@ static int tps6586x_i2c_remove(struct i2c_client *client)
return 0;
}

+static int __maybe_unused tps6586x_i2c_suspend(struct device *dev)
+{
+ struct tps6586x *tps6586x = dev_get_drvdata(dev);
+
+ if (tps6586x->client->irq)
+ disable_irq(tps6586x->client->irq);
+
+ return 0;
+}
+
+static int __maybe_unused tps6586x_i2c_resume(struct device *dev)
+{
+ struct tps6586x *tps6586x = dev_get_drvdata(dev);
+
+ if (tps6586x->client->irq)
+ enable_irq(tps6586x->client->irq);
+
+ return 0;
+}
+
+static SIMPLE_DEV_PM_OPS(tps6586x_pm_ops, tps6586x_i2c_suspend,
+ tps6586x_i2c_resume);
+
static const struct i2c_device_id tps6586x_id_table[] = {
{ "tps6586x", 0 },
{ },
@@ -612,6 +635,7 @@ static struct i2c_driver tps6586x_driver = {
.name = "tps6586x",
.owner = THIS_MODULE,
.of_match_table = of_match_ptr(tps6586x_of_match),
+ .pm = &tps6586x_pm_ops,
},
.probe = tps6586x_i2c_probe,
.remove = tps6586x_i2c_remove,
diff --git a/drivers/mmc/host/atmel-mci.c b/drivers/mmc/host/atmel-mci.c
index 6423083c5238..bacc0368db6b 100644
--- a/drivers/mmc/host/atmel-mci.c
+++ b/drivers/mmc/host/atmel-mci.c
@@ -1838,13 +1838,14 @@ static void atmci_tasklet_func(unsigned long priv)
}

atmci_request_end(host, host->mrq);
- state = STATE_IDLE;
+ goto unlock; /* atmci_request_end() sets host->state */
break;
}
} while (state != prev_state);

host->state = state;

+unlock:
spin_unlock(&host->lock);
}

diff --git a/drivers/net/ethernet/realtek/r8169.c b/drivers/net/ethernet/realtek/r8169.c
index 9152bbe7a9fe..87021903afc8 100644
--- a/drivers/net/ethernet/realtek/r8169.c
+++ b/drivers/net/ethernet/realtek/r8169.c
@@ -324,6 +324,8 @@ enum cfg_version {
};

static const struct pci_device_id rtl8169_pci_tbl[] = {
+ { PCI_VDEVICE(REALTEK, 0x2502), RTL_CFG_1 },
+ { PCI_VDEVICE(REALTEK, 0x2600), RTL_CFG_1 },
{ PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8129), 0, 0, RTL_CFG_0 },
{ PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8136), 0, 0, RTL_CFG_2 },
{ PCI_DEVICE(PCI_VENDOR_ID_REALTEK, 0x8161), 0, 0, RTL_CFG_1 },
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index 770de4630621..4e5046201f4b 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -205,6 +205,12 @@ cache_type_store(struct device *dev, struct device_attribute *attr,
buffer_data[2] |= wce << 2 | rcd;
sp = buffer_data[0] & 0x80 ? 1 : 0;

+ /*
+ * Ensure WP, DPOFUA, and RESERVED fields are cleared in
+ * received mode parameter buffer before doing MODE SELECT.
+ */
+ data.device_specific = 0;
+
if (scsi_mode_select(sdp, 1, sp, 8, buffer_data, len, SD_TIMEOUT,
SD_MAX_RETRIES, &data, &sshdr)) {
if (scsi_sense_valid(&sshdr))
diff --git a/drivers/target/target_core_spc.c b/drivers/target/target_core_spc.c
index 614005b6b08b..3ab264d4fb1f 100644
--- a/drivers/target/target_core_spc.c
+++ b/drivers/target/target_core_spc.c
@@ -112,12 +112,17 @@ spc_emulate_inquiry_std(struct se_cmd *cmd, unsigned char *buf)

buf[7] = 0x2; /* CmdQue=1 */

- memcpy(&buf[8], "LIO-ORG ", 8);
- memset(&buf[16], 0x20, 16);
+ /*
+ * ASCII data fields described as being left-aligned shall have any
+ * unused bytes at the end of the field (i.e., highest offset) and the
+ * unused bytes shall be filled with ASCII space characters (20h).
+ */
+ memset(&buf[8], 0x20, 8 + 16 + 4);
+ memcpy(&buf[8], "LIO-ORG", sizeof("LIO-ORG") - 1);
memcpy(&buf[16], dev->t10_wwn.model,
- min_t(size_t, strlen(dev->t10_wwn.model), 16));
+ strnlen(dev->t10_wwn.model, 16));
memcpy(&buf[32], dev->t10_wwn.revision,
- min_t(size_t, strlen(dev->t10_wwn.revision), 4));
+ strnlen(dev->t10_wwn.revision, 4));
buf[4] = 31; /* Set additional length to 31 */

return 0;
@@ -257,7 +262,9 @@ check_t10_vend_desc:
buf[off] = 0x2; /* ASCII */
buf[off+1] = 0x1; /* T10 Vendor ID */
buf[off+2] = 0x0;
- memcpy(&buf[off+4], "LIO-ORG", 8);
+ /* left align Vendor ID and pad with spaces */
+ memset(&buf[off+4], 0x20, 8);
+ memcpy(&buf[off+4], "LIO-ORG", sizeof("LIO-ORG") - 1);
/* Extra Byte for NULL Terminator */
id_len++;
/* Identifier Length */
diff --git a/drivers/tty/tty_ldsem.c b/drivers/tty/tty_ldsem.c
index 0ffb0cbe2823..82544588797f 100644
--- a/drivers/tty/tty_ldsem.c
+++ b/drivers/tty/tty_ldsem.c
@@ -306,6 +306,16 @@ down_write_failed(struct ld_semaphore *sem, long count, long timeout)
if (!locked)
ldsem_atomic_update(-LDSEM_WAIT_BIAS, sem);
list_del(&waiter.list);
+
+ /*
+ * In case of timeout, wake up every reader who gave the right of way
+ * to writer. Prevent separation readers into two groups:
+ * one that helds semaphore and another that sleeps.
+ * (in case of no contention with a writer)
+ */
+ if (!locked && list_empty(&sem->write_wait))
+ __ldsem_wake_readers(sem);
+
raw_spin_unlock_irq(&sem->wait_lock);

__set_task_state(tsk, TASK_RUNNING);
diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c
index dc8de68c391e..853879a76dde 100644
--- a/drivers/usb/class/cdc-acm.c
+++ b/drivers/usb/class/cdc-acm.c
@@ -1904,6 +1904,13 @@ static const struct usb_device_id acm_ids[] = {
.driver_info = IGNORE_DEVICE,
},

+ { USB_DEVICE(0x1bc7, 0x0021), /* Telit 3G ACM only composition */
+ .driver_info = SEND_ZERO_PACKET,
+ },
+ { USB_DEVICE(0x1bc7, 0x0023), /* Telit 3G ACM + ECM composition */
+ .driver_info = SEND_ZERO_PACKET,
+ },
+
/* control interfaces without any protocol set */
{ USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
USB_CDC_PROTO_NONE) },
diff --git a/drivers/usb/storage/scsiglue.c b/drivers/usb/storage/scsiglue.c
index 12b082082102..37828624b7f8 100644
--- a/drivers/usb/storage/scsiglue.c
+++ b/drivers/usb/storage/scsiglue.c
@@ -223,8 +223,12 @@ static int slave_configure(struct scsi_device *sdev)
if (!(us->fflags & US_FL_NEEDS_CAP16))
sdev->try_rc_10_first = 1;

- /* assume SPC3 or latter devices support sense size > 18 */
- if (sdev->scsi_level > SCSI_SPC_2)
+ /*
+ * assume SPC3 or latter devices support sense size > 18
+ * unless US_FL_BAD_SENSE quirk is specified.
+ */
+ if (sdev->scsi_level > SCSI_SPC_2 &&
+ !(us->fflags & US_FL_BAD_SENSE))
us->fflags |= US_FL_SANE_SENSE;

/* USB-IDE bridges tend to report SK = 0x04 (Non-recoverable
diff --git a/drivers/usb/storage/unusual_devs.h b/drivers/usb/storage/unusual_devs.h
index 1f0b2c8db161..0cfdf8d1e8fc 100644
--- a/drivers/usb/storage/unusual_devs.h
+++ b/drivers/usb/storage/unusual_devs.h
@@ -1392,6 +1392,18 @@ UNUSUAL_DEV( 0x0d49, 0x7310, 0x0000, 0x9999,
USB_SC_DEVICE, USB_PR_DEVICE, NULL,
US_FL_SANE_SENSE),

+/*
+ * Reported by Icenowy Zheng <icenowy@xxxxxxx>
+ * The SMI SM3350 USB-UFS bridge controller will enter a wrong state
+ * that do not process read/write command if a long sense is requested,
+ * so force to use 18-byte sense.
+ */
+UNUSUAL_DEV( 0x090c, 0x3350, 0x0000, 0xffff,
+ "SMI",
+ "SM3350 UFS-to-USB-Mass-Storage bridge",
+ USB_SC_DEVICE, USB_PR_DEVICE, NULL,
+ US_FL_BAD_SENSE ),
+
/*
* Pete Zaitcev <zaitcev@xxxxxxxxx>, bz#164688.
* The device blatantly ignores LUN and returns 1 in GetMaxLUN.
diff --git a/drivers/video/fbdev/omap2/omapfb/omapfb-ioctl.c b/drivers/video/fbdev/omap2/omapfb/omapfb-ioctl.c
index 2dbd5687c453..2f8d875d637d 100644
--- a/drivers/video/fbdev/omap2/omapfb/omapfb-ioctl.c
+++ b/drivers/video/fbdev/omap2/omapfb/omapfb-ioctl.c
@@ -606,6 +606,8 @@ int omapfb_ioctl(struct fb_info *fbi, unsigned int cmd, unsigned long arg)

int r = 0;

+ memset(&p, 0, sizeof(p));
+
switch (cmd) {
case OMAPFB_SYNC_GFX:
DBG("ioctl SYNC_GFX\n");
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 7d98640958bf..3e076e86af48 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -3942,6 +3942,14 @@ static void btrfs_destroy_all_ordered_extents(struct btrfs_fs_info *fs_info)
spin_lock(&fs_info->ordered_root_lock);
}
spin_unlock(&fs_info->ordered_root_lock);
+
+ /*
+ * We need this here because if we've been flipped read-only we won't
+ * get sync() from the umount, so we need to make sure any ordered
+ * extents that haven't had their dirty pages IO start writeout yet
+ * actually get run and error out properly.
+ */
+ btrfs_wait_ordered_roots(fs_info, -1);
}

static int btrfs_destroy_delayed_refs(struct btrfs_transaction *trans,
diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index 488dd62fc242..338c92620d07 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -1067,10 +1067,10 @@ cifs_push_mandatory_locks(struct cifsFileInfo *cfile)

/*
* Accessing maxBuf is racy with cifs_reconnect - need to store value
- * and check it for zero before using.
+ * and check it before using.
*/
max_buf = tcon->ses->server->maxBuf;
- if (!max_buf) {
+ if (max_buf < (sizeof(struct smb_hdr) + sizeof(LOCKING_ANDX_RANGE))) {
free_xid(xid);
return -EINVAL;
}
@@ -1404,10 +1404,10 @@ cifs_unlock_range(struct cifsFileInfo *cfile, struct file_lock *flock,

/*
* Accessing maxBuf is racy with cifs_reconnect - need to store value
- * and check it for zero before using.
+ * and check it before using.
*/
max_buf = tcon->ses->server->maxBuf;
- if (!max_buf)
+ if (max_buf < (sizeof(struct smb_hdr) + sizeof(LOCKING_ANDX_RANGE)))
return -EINVAL;

max_num = (max_buf - sizeof(struct smb_hdr)) /
diff --git a/fs/cifs/smb2file.c b/fs/cifs/smb2file.c
index b87b07504947..fabeaa0ff1bf 100644
--- a/fs/cifs/smb2file.c
+++ b/fs/cifs/smb2file.c
@@ -104,10 +104,10 @@ smb2_unlock_range(struct cifsFileInfo *cfile, struct file_lock *flock,

/*
* Accessing maxBuf is racy with cifs_reconnect - need to store value
- * and check it for zero before using.
+ * and check it before using.
*/
max_buf = tcon->ses->server->maxBuf;
- if (!max_buf)
+ if (max_buf < sizeof(struct smb2_lock_element))
return -EINVAL;

max_num = max_buf / sizeof(struct smb2_lock_element);
diff --git a/fs/cifs/transport.c b/fs/cifs/transport.c
index 27dfb1e8aeaf..11027bef1058 100644
--- a/fs/cifs/transport.c
+++ b/fs/cifs/transport.c
@@ -360,7 +360,7 @@ uncork:
if (rc < 0 && rc != -EINTR)
cifs_dbg(VFS, "Error %d sending data on socket to server\n",
rc);
- else
+ else if (rc > 0)
rc = 0;

return rc;
diff --git a/fs/jffs2/super.c b/fs/jffs2/super.c
index f3194e5147fd..0bbc31d10857 100644
--- a/fs/jffs2/super.c
+++ b/fs/jffs2/super.c
@@ -101,7 +101,8 @@ static int jffs2_sync_fs(struct super_block *sb, int wait)
struct jffs2_sb_info *c = JFFS2_SB_INFO(sb);

#ifdef CONFIG_JFFS2_FS_WRITEBUFFER
- cancel_delayed_work_sync(&c->wbuf_dwork);
+ if (jffs2_is_writebuffered(c))
+ cancel_delayed_work_sync(&c->wbuf_dwork);
#endif

mutex_lock(&c->alloc_sem);
diff --git a/fs/ocfs2/localalloc.c b/fs/ocfs2/localalloc.c
index 044013455621..12675bb5304a 100644
--- a/fs/ocfs2/localalloc.c
+++ b/fs/ocfs2/localalloc.c
@@ -345,13 +345,18 @@ int ocfs2_load_local_alloc(struct ocfs2_super *osb)
if (num_used
|| alloc->id1.bitmap1.i_used
|| alloc->id1.bitmap1.i_total
- || la->la_bm_off)
- mlog(ML_ERROR, "Local alloc hasn't been recovered!\n"
+ || la->la_bm_off) {
+ mlog(ML_ERROR, "inconsistent detected, clean journal with"
+ " unrecovered local alloc, please run fsck.ocfs2!\n"
"found = %u, set = %u, taken = %u, off = %u\n",
num_used, le32_to_cpu(alloc->id1.bitmap1.i_used),
le32_to_cpu(alloc->id1.bitmap1.i_total),
OCFS2_LOCAL_ALLOC(alloc)->la_bm_off);

+ status = -EINVAL;
+ goto bail;
+ }
+
osb->local_alloc_bh = alloc_bh;
osb->local_alloc_state = OCFS2_LA_ENABLED;

diff --git a/fs/pstore/ram_core.c b/fs/pstore/ram_core.c
index 288ce45f613e..5ffbf60f5c88 100644
--- a/fs/pstore/ram_core.c
+++ b/fs/pstore/ram_core.c
@@ -484,6 +484,11 @@ static int persistent_ram_post_init(struct persistent_ram_zone *prz, u32 sig,
sig ^= PERSISTENT_RAM_SIG;

if (prz->buffer->sig == sig) {
+ if (buffer_size(prz) == 0) {
+ pr_debug("found existing empty buffer\n");
+ return 0;
+ }
+
if (buffer_size(prz) > prz->buffer_size ||
buffer_start(prz) > buffer_size(prz))
pr_info("found existing invalid buffer, size %zu, start %zu\n",
diff --git a/include/linux/sunrpc/svc.h b/include/linux/sunrpc/svc.h
index 21678464883a..a656e47b4410 100644
--- a/include/linux/sunrpc/svc.h
+++ b/include/linux/sunrpc/svc.h
@@ -281,9 +281,12 @@ struct svc_rqst {
* to prevent encrypting page
* cache pages */
struct task_struct *rq_task; /* service thread */
+ struct net *rq_bc_net; /* pointer to backchannel's
+ * net namespace
+ */
};

-#define SVC_NET(svc_rqst) (svc_rqst->rq_xprt->xpt_net)
+#define SVC_NET(rqst) (rqst->rq_xprt ? rqst->rq_xprt->xpt_net : rqst->rq_bc_net)

/*
* Rigorous type checking on sockaddr type conversions
diff --git a/mm/slab.c b/mm/slab.c
index b7f9f6456a61..208b24a4d423 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -869,8 +869,10 @@ static struct alien_cache *__alloc_alien_cache(int node, int entries,
struct alien_cache *alc = NULL;

alc = kmalloc_node(memsize, gfp, node);
- init_arraycache(&alc->ac, entries, batch);
- spin_lock_init(&alc->lock);
+ if (alc) {
+ init_arraycache(&alc->ac, entries, batch);
+ spin_lock_init(&alc->lock);
+ }
return alc;
}

diff --git a/net/bridge/br_netfilter.c b/net/bridge/br_netfilter.c
index f076a8ede00b..6aec6b264f8e 100644
--- a/net/bridge/br_netfilter.c
+++ b/net/bridge/br_netfilter.c
@@ -287,7 +287,7 @@ static int br_nf_pre_routing_finish_bridge(struct sk_buff *skb)
if (neigh) {
int ret;

- if (neigh->hh.hh_len) {
+ if ((neigh->nud_state & NUD_CONNECTED) && neigh->hh.hh_len) {
neigh_hh_bridge(&neigh->hh, skb);
skb->dev = nf_bridge->physindev;
ret = br_handle_frame_finish(skb);
diff --git a/net/can/gw.c b/net/can/gw.c
index d4921582d3bd..4ccaf10bb658 100644
--- a/net/can/gw.c
+++ b/net/can/gw.c
@@ -417,13 +417,29 @@ static void can_can_gw_rcv(struct sk_buff *skb, void *data)
while (modidx < MAX_MODFUNCTIONS && gwj->mod.modfunc[modidx])
(*gwj->mod.modfunc[modidx++])(cf, &gwj->mod);

- /* check for checksum updates when the CAN frame has been modified */
+ /* Has the CAN frame been modified? */
if (modidx) {
- if (gwj->mod.csumfunc.crc8)
+ /* get available space for the processed CAN frame type */
+ int max_len = nskb->len - offsetof(struct can_frame, data);
+
+ /* dlc may have changed, make sure it fits to the CAN frame */
+ if (cf->can_dlc > max_len)
+ goto out_delete;
+
+ /* check for checksum updates in classic CAN length only */
+ if (gwj->mod.csumfunc.crc8) {
+ if (cf->can_dlc > 8)
+ goto out_delete;
+
(*gwj->mod.csumfunc.crc8)(cf, &gwj->mod.csum.crc8);
+ }
+
+ if (gwj->mod.csumfunc.xor) {
+ if (cf->can_dlc > 8)
+ goto out_delete;

- if (gwj->mod.csumfunc.xor)
(*gwj->mod.csumfunc.xor)(cf, &gwj->mod.csum.xor);
+ }
}

/* clear the skb timestamp if not configured the other way */
@@ -435,6 +451,14 @@ static void can_can_gw_rcv(struct sk_buff *skb, void *data)
gwj->dropped_frames++;
else
gwj->handled_frames++;
+
+ return;
+
+ out_delete:
+ /* delete frame due to misconfiguration */
+ gwj->deleted_frames++;
+ kfree_skb(nskb);
+ return;
}

static inline int cgw_register_filter(struct cgw_job *gwj)
diff --git a/net/core/sock.c b/net/core/sock.c
index 91ee0eb70fcf..039f101e7807 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -720,6 +720,7 @@ int sock_setsockopt(struct socket *sock, int level, int optname,
break;
case SO_DONTROUTE:
sock_valbool_flag(sk, SOCK_LOCALROUTE, valbool);
+ sk_dst_reset(sk);
break;
case SO_BROADCAST:
sock_valbool_flag(sk, SOCK_BROADCAST, valbool);
diff --git a/net/ipv6/datagram.c b/net/ipv6/datagram.c
index ee7a8983b173..0311d1e55e29 100644
--- a/net/ipv6/datagram.c
+++ b/net/ipv6/datagram.c
@@ -287,6 +287,7 @@ void ipv6_local_error(struct sock *sk, int err, struct flowi6 *fl6, u32 info)
skb_reset_network_header(skb);
iph = ipv6_hdr(skb);
iph->daddr = fl6->daddr;
+ ip6_flow_hdr(iph, 0, 0);

serr = SKB_EXT_ERR(skb);
serr->ee.ee_errno = err;
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index 65cfce2e5010..5f05f51ec4a5 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -2276,7 +2276,7 @@ static int tpacket_snd(struct packet_sock *po, struct msghdr *msg)
addr = saddr->sll_halen ? saddr->sll_addr : NULL;
dev = dev_get_by_index(sock_net(&po->sk), saddr->sll_ifindex);
if (addr && dev && saddr->sll_halen < dev->addr_len)
- goto out;
+ goto out_put;
}

err = -ENXIO;
@@ -2439,7 +2439,7 @@ static int packet_snd(struct socket *sock, struct msghdr *msg, size_t len)
addr = saddr->sll_halen ? saddr->sll_addr : NULL;
dev = dev_get_by_index(sock_net(sk), saddr->sll_ifindex);
if (addr && dev && saddr->sll_halen < dev->addr_len)
- goto out;
+ goto out_unlock;
}

err = -ENXIO;
diff --git a/net/sctp/ipv6.c b/net/sctp/ipv6.c
index 558fd5124372..5a5d92cd6c2b 100644
--- a/net/sctp/ipv6.c
+++ b/net/sctp/ipv6.c
@@ -97,11 +97,9 @@ static int sctp_inet6addr_event(struct notifier_block *this, unsigned long ev,

switch (ev) {
case NETDEV_UP:
- addr = kmalloc(sizeof(struct sctp_sockaddr_entry), GFP_ATOMIC);
+ addr = kzalloc(sizeof(*addr), GFP_ATOMIC);
if (addr) {
addr->a.v6.sin6_family = AF_INET6;
- addr->a.v6.sin6_port = 0;
- addr->a.v6.sin6_flowinfo = 0;
addr->a.v6.sin6_addr = ifa->addr;
addr->a.v6.sin6_scope_id = ifa->idev->dev->ifindex;
addr->valid = 1;
@@ -411,7 +409,6 @@ static void sctp_v6_copy_addrlist(struct list_head *addrlist,
addr = kzalloc(sizeof(*addr), GFP_ATOMIC);
if (addr) {
addr->a.v6.sin6_family = AF_INET6;
- addr->a.v6.sin6_port = 0;
addr->a.v6.sin6_addr = ifp->addr;
addr->a.v6.sin6_scope_id = dev->ifindex;
addr->valid = 1;
diff --git a/net/sctp/protocol.c b/net/sctp/protocol.c
index 143c4ebd55fa..79c1a65bb636 100644
--- a/net/sctp/protocol.c
+++ b/net/sctp/protocol.c
@@ -149,7 +149,6 @@ static void sctp_v4_copy_addrlist(struct list_head *addrlist,
addr = kzalloc(sizeof(*addr), GFP_ATOMIC);
if (addr) {
addr->a.v4.sin_family = AF_INET;
- addr->a.v4.sin_port = 0;
addr->a.v4.sin_addr.s_addr = ifa->ifa_local;
addr->valid = 1;
INIT_LIST_HEAD(&addr->list);
@@ -755,10 +754,9 @@ static int sctp_inetaddr_event(struct notifier_block *this, unsigned long ev,

switch (ev) {
case NETDEV_UP:
- addr = kmalloc(sizeof(struct sctp_sockaddr_entry), GFP_ATOMIC);
+ addr = kzalloc(sizeof(*addr), GFP_ATOMIC);
if (addr) {
addr->a.v4.sin_family = AF_INET;
- addr->a.v4.sin_port = 0;
addr->a.v4.sin_addr.s_addr = ifa->ifa_local;
addr->valid = 1;
spin_lock_bh(&net->sctp.local_addr_lock);
diff --git a/net/sunrpc/rpcb_clnt.c b/net/sunrpc/rpcb_clnt.c
index 74b75c3ce39d..838ec5afde65 100644
--- a/net/sunrpc/rpcb_clnt.c
+++ b/net/sunrpc/rpcb_clnt.c
@@ -772,6 +772,12 @@ void rpcb_getport_async(struct rpc_task *task)
case RPCBVERS_3:
map->r_netid = xprt->address_strings[RPC_DISPLAY_NETID];
map->r_addr = rpc_sockaddr2uaddr(sap, GFP_ATOMIC);
+ if (!map->r_addr) {
+ status = -ENOMEM;
+ dprintk("RPC: %5u %s: no memory available\n",
+ task->tk_pid, __func__);
+ goto bailout_free_args;
+ }
map->r_owner = "";
break;
case RPCBVERS_2:
@@ -794,6 +800,8 @@ void rpcb_getport_async(struct rpc_task *task)
rpc_put_task(child);
return;

+bailout_free_args:
+ kfree(map);
bailout_release_client:
rpc_release_client(rpcb_clnt);
bailout_nofree:
diff --git a/net/sunrpc/svc.c b/net/sunrpc/svc.c
index ca8a7958f4e6..d7c1f254b3ab 100644
--- a/net/sunrpc/svc.c
+++ b/net/sunrpc/svc.c
@@ -1061,6 +1061,8 @@ void svc_printk(struct svc_rqst *rqstp, const char *fmt, ...)
static __printf(2,3) void svc_printk(struct svc_rqst *rqstp, const char *fmt, ...) {}
#endif

+extern void svc_tcp_prep_reply_hdr(struct svc_rqst *);
+
/*
* Common routine for processing the RPC request.
*/
@@ -1090,7 +1092,8 @@ svc_process_common(struct svc_rqst *rqstp, struct kvec *argv, struct kvec *resv)
rqstp->rq_dropme = false;

/* Setup reply header */
- rqstp->rq_xprt->xpt_ops->xpo_prep_reply_hdr(rqstp);
+ if (rqstp->rq_prot == IPPROTO_TCP)
+ svc_tcp_prep_reply_hdr(rqstp);

svc_putu32(resv, rqstp->rq_xid);

@@ -1137,7 +1140,8 @@ svc_process_common(struct svc_rqst *rqstp, struct kvec *argv, struct kvec *resv)
case SVC_DENIED:
goto err_bad_auth;
case SVC_CLOSE:
- if (test_bit(XPT_TEMP, &rqstp->rq_xprt->xpt_flags))
+ if (rqstp->rq_xprt &&
+ test_bit(XPT_TEMP, &rqstp->rq_xprt->xpt_flags))
svc_close_xprt(rqstp->rq_xprt);
case SVC_DROP:
goto dropit;
@@ -1347,10 +1351,10 @@ bc_svc_process(struct svc_serv *serv, struct rpc_rqst *req,
struct kvec *resv = &rqstp->rq_res.head[0];

/* Build the svc_rqst used by the common processing routine */
- rqstp->rq_xprt = serv->sv_bc_xprt;
rqstp->rq_xid = req->rq_xid;
rqstp->rq_prot = req->rq_xprt->prot;
rqstp->rq_server = serv;
+ rqstp->rq_bc_net = req->rq_xprt->xprt_net;

rqstp->rq_addrlen = sizeof(req->rq_xprt->addr);
memcpy(&rqstp->rq_addr, &req->rq_xprt->addr, rqstp->rq_addrlen);
diff --git a/net/sunrpc/svc_xprt.c b/net/sunrpc/svc_xprt.c
index b8680aa23d4f..1a5e0024ccb6 100644
--- a/net/sunrpc/svc_xprt.c
+++ b/net/sunrpc/svc_xprt.c
@@ -438,10 +438,11 @@ static struct svc_xprt *svc_xprt_dequeue(struct svc_pool *pool)
*/
void svc_reserve(struct svc_rqst *rqstp, int space)
{
+ struct svc_xprt *xprt = rqstp->rq_xprt;
+
space += rqstp->rq_res.head[0].iov_len;

- if (space < rqstp->rq_reserved) {
- struct svc_xprt *xprt = rqstp->rq_xprt;
+ if (xprt && space < rqstp->rq_reserved) {
atomic_sub((rqstp->rq_reserved - space), &xprt->xpt_reserved);
rqstp->rq_reserved = space;

diff --git a/net/sunrpc/svcsock.c b/net/sunrpc/svcsock.c
index 3e7215779011..0f32dbf56466 100644
--- a/net/sunrpc/svcsock.c
+++ b/net/sunrpc/svcsock.c
@@ -1212,7 +1212,7 @@ static int svc_tcp_sendto(struct svc_rqst *rqstp)
/*
* Setup response header. TCP has a 4B record length field.
*/
-static void svc_tcp_prep_reply_hdr(struct svc_rqst *rqstp)
+void svc_tcp_prep_reply_hdr(struct svc_rqst *rqstp)
{
struct kvec *resv = &rqstp->rq_res.head[0];

diff --git a/scripts/kconfig/zconf.l b/scripts/kconfig/zconf.l
index 6c62d93b4ffb..485b19a461f8 100644
--- a/scripts/kconfig/zconf.l
+++ b/scripts/kconfig/zconf.l
@@ -180,6 +180,8 @@ n [A-Za-z0-9_]
}
<<EOF>> {
BEGIN(INITIAL);
+ yylval.string = text;
+ return T_WORD_QUOTE;
}
}

diff --git a/security/selinux/ss/policydb.c b/security/selinux/ss/policydb.c
index bc2a586f095c..0b31d61eea78 100644
--- a/security/selinux/ss/policydb.c
+++ b/security/selinux/ss/policydb.c
@@ -717,7 +717,8 @@ static int sens_destroy(void *key, void *datum, void *p)
kfree(key);
if (datum) {
levdatum = datum;
- ebitmap_destroy(&levdatum->level->cat);
+ if (levdatum->level)
+ ebitmap_destroy(&levdatum->level->cat);
kfree(levdatum->level);
}
kfree(datum);
diff --git a/security/yama/yama_lsm.c b/security/yama/yama_lsm.c
index 0038834b558e..6da531603614 100644
--- a/security/yama/yama_lsm.c
+++ b/security/yama/yama_lsm.c
@@ -299,7 +299,9 @@ int yama_ptrace_access_check(struct task_struct *child,
break;
case YAMA_SCOPE_RELATIONAL:
rcu_read_lock();
- if (!task_is_descendant(current, child) &&
+ if (!pid_alive(child))
+ rc = -EPERM;
+ if (!rc && !task_is_descendant(current, child) &&
!ptracer_exception_found(current, child) &&
!ns_capable(__task_cred(child)->user_ns, CAP_SYS_PTRACE))
rc = -EPERM;
diff --git a/sound/firewire/bebob/bebob.c b/sound/firewire/bebob/bebob.c
index fc19c99654aa..e4312afe2ce5 100644
--- a/sound/firewire/bebob/bebob.c
+++ b/sound/firewire/bebob/bebob.c
@@ -356,7 +356,7 @@ static const struct ieee1394_device_id bebob_id_table[] = {
/* Apogee Electronics, DA/AD/DD-16X (X-FireWire card) */
SND_BEBOB_DEV_ENTRY(VEN_APOGEE, 0x00010048, &spec_normal),
/* Apogee Electronics, Ensemble */
- SND_BEBOB_DEV_ENTRY(VEN_APOGEE, 0x00001eee, &spec_normal),
+ SND_BEBOB_DEV_ENTRY(VEN_APOGEE, 0x01eeee, &spec_normal),
/* ESI, Quatafire610 */
SND_BEBOB_DEV_ENTRY(VEN_ESI, 0x00010064, &spec_normal),
/* AcousticReality, eARMasterOne */
diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index c659a3ca1283..78b452421375 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -1319,7 +1319,7 @@ static void print_symbol_events(const char *event_glob, unsigned type,
if (strlen(syms->alias))
snprintf(name, MAX_NAME_LEN, "%s OR %s", syms->symbol, syms->alias);
else
- strncpy(name, syms->symbol, MAX_NAME_LEN);
+ strlcpy(name, syms->symbol, MAX_NAME_LEN);

printf(" %-50s [%s]\n", name, event_type_descriptors[type]);

diff --git a/tools/perf/util/svghelper.c b/tools/perf/util/svghelper.c
index 283d3e73e2f2..48a841462536 100644
--- a/tools/perf/util/svghelper.c
+++ b/tools/perf/util/svghelper.c
@@ -333,7 +333,7 @@ static char *cpu_model(void)
if (file) {
while (fgets(buf, 255, file)) {
if (strstr(buf, "model name")) {
- strncpy(cpu_m, &buf[13], 255);
+ strlcpy(cpu_m, &buf[13], 255);
break;
}
}

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