Re: Linux 3.14.56

From: Greg KH
Date: Mon Oct 26 2015 - 22:07:50 EST

diff --git a/Makefile b/Makefile
index 97d18c1d27f2..2a13d9d63880 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
VERSION = 3
PATCHLEVEL = 14
-SUBLEVEL = 55
+SUBLEVEL = 56
EXTRAVERSION =
NAME = Remembering Coco

diff --git a/arch/arm64/Makefile b/arch/arm64/Makefile
index 0ab1a34dab58..dcc26850727d 100644
--- a/arch/arm64/Makefile
+++ b/arch/arm64/Makefile
@@ -35,7 +35,7 @@ comma = ,
CHECKFLAGS += -D__aarch64__

ifeq ($(CONFIG_ARM64_ERRATUM_843419), y)
-CFLAGS_MODULE += -mcmodel=large
+KBUILD_CFLAGS_MODULE += -mcmodel=large
endif

# Default value
diff --git a/arch/sparc/crypto/aes_glue.c b/arch/sparc/crypto/aes_glue.c
index ded4cee35318..dc78cdd43e0a 100644
--- a/arch/sparc/crypto/aes_glue.c
+++ b/arch/sparc/crypto/aes_glue.c
@@ -433,6 +433,7 @@ static struct crypto_alg algs[] = { {
.blkcipher = {
.min_keysize = AES_MIN_KEY_SIZE,
.max_keysize = AES_MAX_KEY_SIZE,
+ .ivsize = AES_BLOCK_SIZE,
.setkey = aes_set_key,
.encrypt = cbc_encrypt,
.decrypt = cbc_decrypt,
@@ -452,6 +453,7 @@ static struct crypto_alg algs[] = { {
.blkcipher = {
.min_keysize = AES_MIN_KEY_SIZE,
.max_keysize = AES_MAX_KEY_SIZE,
+ .ivsize = AES_BLOCK_SIZE,
.setkey = aes_set_key,
.encrypt = ctr_crypt,
.decrypt = ctr_crypt,
diff --git a/arch/sparc/crypto/camellia_glue.c b/arch/sparc/crypto/camellia_glue.c
index 641f55cb61c3..eb87d6dd86b1 100644
--- a/arch/sparc/crypto/camellia_glue.c
+++ b/arch/sparc/crypto/camellia_glue.c
@@ -274,6 +274,7 @@ static struct crypto_alg algs[] = { {
.blkcipher = {
.min_keysize = CAMELLIA_MIN_KEY_SIZE,
.max_keysize = CAMELLIA_MAX_KEY_SIZE,
+ .ivsize = CAMELLIA_BLOCK_SIZE,
.setkey = camellia_set_key,
.encrypt = cbc_encrypt,
.decrypt = cbc_decrypt,
diff --git a/arch/sparc/crypto/des_glue.c b/arch/sparc/crypto/des_glue.c
index d11500972994..1359bfc544e4 100644
--- a/arch/sparc/crypto/des_glue.c
+++ b/arch/sparc/crypto/des_glue.c
@@ -429,6 +429,7 @@ static struct crypto_alg algs[] = { {
.blkcipher = {
.min_keysize = DES_KEY_SIZE,
.max_keysize = DES_KEY_SIZE,
+ .ivsize = DES_BLOCK_SIZE,
.setkey = des_set_key,
.encrypt = cbc_encrypt,
.decrypt = cbc_decrypt,
@@ -485,6 +486,7 @@ static struct crypto_alg algs[] = { {
.blkcipher = {
.min_keysize = DES3_EDE_KEY_SIZE,
.max_keysize = DES3_EDE_KEY_SIZE,
+ .ivsize = DES3_EDE_BLOCK_SIZE,
.setkey = des3_ede_set_key,
.encrypt = cbc3_encrypt,
.decrypt = cbc3_decrypt,
diff --git a/arch/x86/include/asm/preempt.h b/arch/x86/include/asm/preempt.h
index b39e194f6c8d..999b4a3e65f5 100644
--- a/arch/x86/include/asm/preempt.h
+++ b/arch/x86/include/asm/preempt.h
@@ -105,9 +105,9 @@ static __always_inline bool __preempt_count_dec_and_test(void)
/*
* Returns true when we need to resched and can (barring IRQ state).
*/
-static __always_inline bool should_resched(void)
+static __always_inline bool should_resched(int preempt_offset)
{
- return unlikely(!__this_cpu_read_4(__preempt_count));
+ return unlikely(__this_cpu_read_4(__preempt_count) == preempt_offset);
}

#ifdef CONFIG_PREEMPT
diff --git a/crypto/ahash.c b/crypto/ahash.c
index a92dc382f781..865ef923eda6 100644
--- a/crypto/ahash.c
+++ b/crypto/ahash.c
@@ -465,7 +465,8 @@ static int ahash_prepare_alg(struct ahash_alg *alg)
struct crypto_alg *base = &alg->halg.base;

if (alg->halg.digestsize > PAGE_SIZE / 8 ||
- alg->halg.statesize > PAGE_SIZE / 8)
+ alg->halg.statesize > PAGE_SIZE / 8 ||
+ alg->halg.statesize == 0)
return -EINVAL;

base->cra_type = &crypto_ahash_type;
diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index b583773e4ecb..2ea515509ca6 100644
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -4851,7 +4851,6 @@ static int rbd_dev_probe_parent(struct rbd_device *rbd_dev)
out_err:
if (parent) {
rbd_dev_unparent(rbd_dev);
- kfree(rbd_dev->header_name);
rbd_dev_destroy(parent);
} else {
rbd_put_client(rbdc);
diff --git a/drivers/gpu/drm/nouveau/nouveau_fbcon.c b/drivers/gpu/drm/nouveau/nouveau_fbcon.c
index 7903e0ed3c75..a5846b34fdd9 100644
--- a/drivers/gpu/drm/nouveau/nouveau_fbcon.c
+++ b/drivers/gpu/drm/nouveau/nouveau_fbcon.c
@@ -183,8 +183,30 @@ nouveau_fbcon_sync(struct fb_info *info)
return 0;
}

+static int
+nouveau_fbcon_open(struct fb_info *info, int user)
+{
+ struct nouveau_fbdev *fbcon = info->par;
+ struct nouveau_drm *drm = nouveau_drm(fbcon->dev);
+ int ret = pm_runtime_get_sync(drm->dev->dev);
+ if (ret < 0 && ret != -EACCES)
+ return ret;
+ return 0;
+}
+
+static int
+nouveau_fbcon_release(struct fb_info *info, int user)
+{
+ struct nouveau_fbdev *fbcon = info->par;
+ struct nouveau_drm *drm = nouveau_drm(fbcon->dev);
+ pm_runtime_put(drm->dev->dev);
+ return 0;
+}
+
static struct fb_ops nouveau_fbcon_ops = {
.owner = THIS_MODULE,
+ .fb_open = nouveau_fbcon_open,
+ .fb_release = nouveau_fbcon_release,
.fb_check_var = drm_fb_helper_check_var,
.fb_set_par = drm_fb_helper_set_par,
.fb_fillrect = nouveau_fbcon_fillrect,
@@ -200,6 +222,8 @@ static struct fb_ops nouveau_fbcon_ops = {

static struct fb_ops nouveau_fbcon_sw_ops = {
.owner = THIS_MODULE,
+ .fb_open = nouveau_fbcon_open,
+ .fb_release = nouveau_fbcon_release,
.fb_check_var = drm_fb_helper_check_var,
.fb_set_par = drm_fb_helper_set_par,
.fb_fillrect = cfb_fillrect,
diff --git a/drivers/gpu/drm/radeon/radeon_display.c b/drivers/gpu/drm/radeon/radeon_display.c
index 11d06c7b5afa..1af604a4512a 100644
--- a/drivers/gpu/drm/radeon/radeon_display.c
+++ b/drivers/gpu/drm/radeon/radeon_display.c
@@ -1479,18 +1479,8 @@ int radeon_modeset_init(struct radeon_device *rdev)
radeon_fbdev_init(rdev);
drm_kms_helper_poll_init(rdev->ddev);

- if (rdev->pm.dpm_enabled) {
- /* do dpm late init */
- ret = radeon_pm_late_init(rdev);
- if (ret) {
- rdev->pm.dpm_enabled = false;
- DRM_ERROR("radeon_pm_late_init failed, disabling dpm\n");
- }
- /* set the dpm state for PX since there won't be
- * a modeset to call this.
- */
- radeon_pm_compute_clocks(rdev);
- }
+ /* do pm late init */
+ ret = radeon_pm_late_init(rdev);

return 0;
}
diff --git a/drivers/gpu/drm/radeon/radeon_pm.c b/drivers/gpu/drm/radeon/radeon_pm.c
index 0095ee7fce34..214adc6d2a68 100644
--- a/drivers/gpu/drm/radeon/radeon_pm.c
+++ b/drivers/gpu/drm/radeon/radeon_pm.c
@@ -1153,14 +1153,6 @@ static int radeon_pm_init_old(struct radeon_device *rdev)
INIT_DELAYED_WORK(&rdev->pm.dynpm_idle_work, radeon_dynpm_idle_work_handler);

if (rdev->pm.num_power_states > 1) {
- /* where's the best place to put these? */
- ret = device_create_file(rdev->dev, &dev_attr_power_profile);
- if (ret)
- DRM_ERROR("failed to create device file for power profile\n");
- ret = device_create_file(rdev->dev, &dev_attr_power_method);
- if (ret)
- DRM_ERROR("failed to create device file for power method\n");
-
if (radeon_debugfs_pm_init(rdev)) {
DRM_ERROR("Failed to register debugfs file for PM!\n");
}
@@ -1218,20 +1210,6 @@ static int radeon_pm_init_dpm(struct radeon_device *rdev)
goto dpm_failed;
rdev->pm.dpm_enabled = true;

- ret = device_create_file(rdev->dev, &dev_attr_power_dpm_state);
- if (ret)
- DRM_ERROR("failed to create device file for dpm state\n");
- ret = device_create_file(rdev->dev, &dev_attr_power_dpm_force_performance_level);
- if (ret)
- DRM_ERROR("failed to create device file for dpm state\n");
- /* XXX: these are noops for dpm but are here for backwards compat */
- ret = device_create_file(rdev->dev, &dev_attr_power_profile);
- if (ret)
- DRM_ERROR("failed to create device file for power profile\n");
- ret = device_create_file(rdev->dev, &dev_attr_power_method);
- if (ret)
- DRM_ERROR("failed to create device file for power method\n");
-
if (radeon_debugfs_pm_init(rdev)) {
DRM_ERROR("Failed to register debugfs file for dpm!\n");
}
@@ -1371,9 +1349,44 @@ int radeon_pm_late_init(struct radeon_device *rdev)
int ret = 0;

if (rdev->pm.pm_method == PM_METHOD_DPM) {
- mutex_lock(&rdev->pm.mutex);
- ret = radeon_dpm_late_enable(rdev);
- mutex_unlock(&rdev->pm.mutex);
+ if (rdev->pm.dpm_enabled) {
+ ret = device_create_file(rdev->dev, &dev_attr_power_dpm_state);
+ if (ret)
+ DRM_ERROR("failed to create device file for dpm state\n");
+ ret = device_create_file(rdev->dev, &dev_attr_power_dpm_force_performance_level);
+ if (ret)
+ DRM_ERROR("failed to create device file for dpm state\n");
+ /* XXX: these are noops for dpm but are here for backwards compat */
+ ret = device_create_file(rdev->dev, &dev_attr_power_profile);
+ if (ret)
+ DRM_ERROR("failed to create device file for power profile\n");
+ ret = device_create_file(rdev->dev, &dev_attr_power_method);
+ if (ret)
+ DRM_ERROR("failed to create device file for power method\n");
+
+ mutex_lock(&rdev->pm.mutex);
+ ret = radeon_dpm_late_enable(rdev);
+ mutex_unlock(&rdev->pm.mutex);
+ if (ret) {
+ rdev->pm.dpm_enabled = false;
+ DRM_ERROR("radeon_pm_late_init failed, disabling dpm\n");
+ } else {
+ /* set the dpm state for PX since there won't be
+ * a modeset to call this.
+ */
+ radeon_pm_compute_clocks(rdev);
+ }
+ }
+ } else {
+ if (rdev->pm.num_power_states > 1) {
+ /* where's the best place to put these? */
+ ret = device_create_file(rdev->dev, &dev_attr_power_profile);
+ if (ret)
+ DRM_ERROR("failed to create device file for power profile\n");
+ ret = device_create_file(rdev->dev, &dev_attr_power_method);
+ if (ret)
+ DRM_ERROR("failed to create device file for power method\n");
+ }
}
return ret;
}
diff --git a/drivers/i2c/busses/i2c-designware-platdrv.c b/drivers/i2c/busses/i2c-designware-platdrv.c
index d0bdac0498ce..f7439c556413 100644
--- a/drivers/i2c/busses/i2c-designware-platdrv.c
+++ b/drivers/i2c/busses/i2c-designware-platdrv.c
@@ -28,6 +28,7 @@
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/delay.h>
+#include <linux/dmi.h>
#include <linux/i2c.h>
#include <linux/clk.h>
#include <linux/errno.h>
@@ -53,6 +54,22 @@ static u32 i2c_dw_get_clk_rate_khz(struct dw_i2c_dev *dev)
}

#ifdef CONFIG_ACPI
+/*
+ * The HCNT/LCNT information coming from ACPI should be the most accurate
+ * for given platform. However, some systems get it wrong. On such systems
+ * we get better results by calculating those based on the input clock.
+ */
+static const struct dmi_system_id dw_i2c_no_acpi_params[] = {
+ {
+ .ident = "Dell Inspiron 7348",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 7348"),
+ },
+ },
+ { }
+};
+
static void dw_i2c_acpi_params(struct platform_device *pdev, char method[],
u16 *hcnt, u16 *lcnt, u32 *sda_hold)
{
@@ -60,6 +77,9 @@ static void dw_i2c_acpi_params(struct platform_device *pdev, char method[],
acpi_handle handle = ACPI_HANDLE(&pdev->dev);
union acpi_object *obj;

+ if (dmi_check_system(dw_i2c_no_acpi_params))
+ return;
+
if (ACPI_FAILURE(acpi_evaluate_object(handle, method, NULL, &buf)))
return;

diff --git a/drivers/i2c/busses/i2c-rcar.c b/drivers/i2c/busses/i2c-rcar.c
index d3c5d6216575..32812d3e5411 100644
--- a/drivers/i2c/busses/i2c-rcar.c
+++ b/drivers/i2c/busses/i2c-rcar.c
@@ -712,15 +712,16 @@ static int rcar_i2c_probe(struct platform_device *pdev)
return ret;
}

+ pm_runtime_enable(dev);
+ platform_set_drvdata(pdev, priv);
+
ret = i2c_add_numbered_adapter(adap);
if (ret < 0) {
dev_err(dev, "reg adap failed: %d\n", ret);
+ pm_runtime_disable(dev);
return ret;
}

- pm_runtime_enable(dev);
- platform_set_drvdata(pdev, priv);
-
dev_info(dev, "probed\n");

return 0;
diff --git a/drivers/i2c/busses/i2c-s3c2410.c b/drivers/i2c/busses/i2c-s3c2410.c
index 79a211782766..a272988f8f10 100644
--- a/drivers/i2c/busses/i2c-s3c2410.c
+++ b/drivers/i2c/busses/i2c-s3c2410.c
@@ -1198,17 +1198,19 @@ static int s3c24xx_i2c_probe(struct platform_device *pdev)
i2c->adap.nr = i2c->pdata->bus_num;
i2c->adap.dev.of_node = pdev->dev.of_node;

+ platform_set_drvdata(pdev, i2c);
+
+ pm_runtime_enable(&pdev->dev);
+
ret = i2c_add_numbered_adapter(&i2c->adap);
if (ret < 0) {
dev_err(&pdev->dev, "failed to add bus to i2c core\n");
+ pm_runtime_disable(&pdev->dev);
s3c24xx_i2c_deregister_cpufreq(i2c);
clk_unprepare(i2c->clk);
return ret;
}

- platform_set_drvdata(pdev, i2c);
-
- pm_runtime_enable(&pdev->dev);
pm_runtime_enable(&i2c->adap.dev);

dev_info(&pdev->dev, "%s: S3C I2C adapter\n", dev_name(&i2c->adap.dev));
diff --git a/drivers/md/dm-thin.c b/drivers/md/dm-thin.c
index c1120eb96d86..b94e4648c199 100644
--- a/drivers/md/dm-thin.c
+++ b/drivers/md/dm-thin.c
@@ -2373,7 +2373,7 @@ static int pool_ctr(struct dm_target *ti, unsigned argc, char **argv)
metadata_low_callback,
pool);
if (r)
- goto out_free_pt;
+ goto out_flags_changed;

pt->callbacks.congested_fn = pool_is_congested;
dm_table_add_target_callbacks(ti->table, &pt->callbacks);
diff --git a/drivers/net/ppp/pppoe.c b/drivers/net/ppp/pppoe.c
index 6c9c16d76935..f606b5ba611f 100644
--- a/drivers/net/ppp/pppoe.c
+++ b/drivers/net/ppp/pppoe.c
@@ -313,7 +313,6 @@ static void pppoe_flush_dev(struct net_device *dev)
if (po->pppoe_dev == dev &&
sk->sk_state & (PPPOX_CONNECTED | PPPOX_BOUND | PPPOX_ZOMBIE)) {
pppox_unbind_sock(sk);
- sk->sk_state = PPPOX_ZOMBIE;
sk->sk_state_change(sk);
po->pppoe_dev = NULL;
dev_put(dev);
diff --git a/drivers/net/usb/asix_devices.c b/drivers/net/usb/asix_devices.c
index 5d194093f3e1..816d511e34d3 100644
--- a/drivers/net/usb/asix_devices.c
+++ b/drivers/net/usb/asix_devices.c
@@ -465,19 +465,7 @@ static int ax88772_bind(struct usbnet *dev, struct usb_interface *intf)
return ret;
}

- ret = asix_sw_reset(dev, AX_SWRESET_IPPD | AX_SWRESET_PRL);
- if (ret < 0)
- return ret;
-
- msleep(150);
-
- ret = asix_sw_reset(dev, AX_SWRESET_CLEAR);
- if (ret < 0)
- return ret;
-
- msleep(150);
-
- ret = asix_sw_reset(dev, embd_phy ? AX_SWRESET_IPRL : AX_SWRESET_PRTE);
+ ax88772_reset(dev);

/* Read PHYID register *AFTER* the PHY was reset properly */
phyid = asix_get_phyid(dev);
@@ -890,7 +878,7 @@ static const struct driver_info ax88772_info = {
.unbind = ax88772_unbind,
.status = asix_status,
.link_reset = ax88772_link_reset,
- .reset = ax88772_reset,
+ .reset = ax88772_link_reset,
.flags = FLAG_ETHER | FLAG_FRAMING_AX | FLAG_LINK_INTR | FLAG_MULTI_PACKET,
.rx_fixup = asix_rx_fixup_common,
.tx_fixup = asix_tx_fixup,
diff --git a/fs/btrfs/backref.c b/fs/btrfs/backref.c
index 6244f9cf8ae3..0529defbdf73 100644
--- a/fs/btrfs/backref.c
+++ b/fs/btrfs/backref.c
@@ -1692,7 +1692,6 @@ static int iterate_inode_extrefs(u64 inum, struct btrfs_root *fs_root,
int found = 0;
struct extent_buffer *eb;
struct btrfs_inode_extref *extref;
- struct extent_buffer *leaf;
u32 item_size;
u32 cur_offset;
unsigned long ptr;
@@ -1720,9 +1719,8 @@ static int iterate_inode_extrefs(u64 inum, struct btrfs_root *fs_root,
btrfs_set_lock_blocking_rw(eb, BTRFS_READ_LOCK);
btrfs_release_path(path);

- leaf = path->nodes[0];
- item_size = btrfs_item_size_nr(leaf, slot);
- ptr = btrfs_item_ptr_offset(leaf, slot);
+ item_size = btrfs_item_size_nr(eb, slot);
+ ptr = btrfs_item_ptr_offset(eb, slot);
cur_offset = 0;

while (cur_offset < item_size) {
@@ -1736,7 +1734,7 @@ static int iterate_inode_extrefs(u64 inum, struct btrfs_root *fs_root,
if (ret)
break;

- cur_offset += btrfs_inode_extref_name_len(leaf, extref);
+ cur_offset += btrfs_inode_extref_name_len(eb, extref);
cur_offset += sizeof(*extref);
}
btrfs_tree_read_unlock_blocking(eb);
diff --git a/include/asm-generic/preempt.h b/include/asm-generic/preempt.h
index 1cd3f5d767a8..54352f4dde1a 100644
--- a/include/asm-generic/preempt.h
+++ b/include/asm-generic/preempt.h
@@ -74,9 +74,10 @@ static __always_inline bool __preempt_count_dec_and_test(void)
/*
* Returns true when we need to resched and can (barring IRQ state).
*/
-static __always_inline bool should_resched(void)
+static __always_inline bool should_resched(int preempt_offset)
{
- return unlikely(!preempt_count() && tif_need_resched());
+ return unlikely(preempt_count() == preempt_offset &&
+ tif_need_resched());
}

#ifdef CONFIG_PREEMPT
diff --git a/include/linux/preempt.h b/include/linux/preempt.h
index 1841b58cf173..411a5c6371da 100644
--- a/include/linux/preempt.h
+++ b/include/linux/preempt.h
@@ -22,7 +22,8 @@
#if defined(CONFIG_DEBUG_PREEMPT) || defined(CONFIG_PREEMPT_TRACER)
extern void preempt_count_add(int val);
extern void preempt_count_sub(int val);
-#define preempt_count_dec_and_test() ({ preempt_count_sub(1); should_resched(); })
+#define preempt_count_dec_and_test() \
+ ({ preempt_count_sub(1); should_resched(0); })
#else
#define preempt_count_add(val) __preempt_count_add(val)
#define preempt_count_sub(val) __preempt_count_sub(val)
@@ -61,7 +62,7 @@ do { \

#define preempt_check_resched() \
do { \
- if (should_resched()) \
+ if (should_resched(0)) \
__preempt_schedule(); \
} while (0)

diff --git a/include/linux/preempt_mask.h b/include/linux/preempt_mask.h
index dbeec4d4a3be..5cb25f17331a 100644
--- a/include/linux/preempt_mask.h
+++ b/include/linux/preempt_mask.h
@@ -71,13 +71,21 @@
*/
#define in_nmi() (preempt_count() & NMI_MASK)

+/*
+ * The preempt_count offset after preempt_disable();
+ */
#if defined(CONFIG_PREEMPT_COUNT)
-# define PREEMPT_CHECK_OFFSET 1
+# define PREEMPT_DISABLE_OFFSET PREEMPT_OFFSET
#else
-# define PREEMPT_CHECK_OFFSET 0
+# define PREEMPT_DISABLE_OFFSET 0
#endif

/*
+ * The preempt_count offset after spin_lock()
+ */
+#define PREEMPT_LOCK_OFFSET PREEMPT_DISABLE_OFFSET
+
+/*
* The preempt_count offset needed for things like:
*
* spin_lock_bh()
@@ -90,7 +98,7 @@
*
* Work as expected.
*/
-#define SOFTIRQ_LOCK_OFFSET (SOFTIRQ_DISABLE_OFFSET + PREEMPT_CHECK_OFFSET)
+#define SOFTIRQ_LOCK_OFFSET (SOFTIRQ_DISABLE_OFFSET + PREEMPT_LOCK_OFFSET)

/*
* Are we running in atomic context? WARNING: this macro cannot
@@ -106,7 +114,7 @@
* (used by the scheduler, *after* releasing the kernel lock)
*/
#define in_atomic_preempt_off() \
- ((preempt_count() & ~PREEMPT_ACTIVE) != PREEMPT_CHECK_OFFSET)
+ ((preempt_count() & ~PREEMPT_ACTIVE) != PREEMPT_DISABLE_OFFSET)

#ifdef CONFIG_PREEMPT_COUNT
# define preemptible() (preempt_count() == 0 && !irqs_disabled())
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 91fe6a38b307..ec6000f66e75 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -2647,12 +2647,6 @@ extern int _cond_resched(void);

extern int __cond_resched_lock(spinlock_t *lock);

-#ifdef CONFIG_PREEMPT_COUNT
-#define PREEMPT_LOCK_OFFSET PREEMPT_OFFSET
-#else
-#define PREEMPT_LOCK_OFFSET 0
-#endif
-
#define cond_resched_lock(lock) ({ \
__might_sleep(__FILE__, __LINE__, PREEMPT_LOCK_OFFSET); \
__cond_resched_lock(lock); \
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index ab3133797ff7..d8bec47b6edd 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -2347,6 +2347,9 @@ static inline void skb_postpull_rcsum(struct sk_buff *skb,
{
if (skb->ip_summed == CHECKSUM_COMPLETE)
skb->csum = csum_sub(skb->csum, csum_partial(start, len, 0));
+ else if (skb->ip_summed == CHECKSUM_PARTIAL &&
+ skb_checksum_start_offset(skb) < 0)
+ skb->ip_summed = CHECKSUM_NONE;
}

unsigned char *skb_pull_rcsum(struct sk_buff *skb, unsigned int len);
diff --git a/include/net/af_unix.h b/include/net/af_unix.h
index a175ba4a7adb..dfe4ddfbb43c 100644
--- a/include/net/af_unix.h
+++ b/include/net/af_unix.h
@@ -64,7 +64,11 @@ struct unix_sock {
#define UNIX_GC_MAYBE_CYCLE 1
struct socket_wq peer_wq;
};
-#define unix_sk(__sk) ((struct unix_sock *)__sk)
+
+static inline struct unix_sock *unix_sk(struct sock *sk)
+{
+ return (struct unix_sock *)sk;
+}

#define peer_wait peer_wq.wait

diff --git a/include/net/sock.h b/include/net/sock.h
index 0c79a740e97d..ff4f825647a5 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -805,6 +805,14 @@ static inline __must_check int sk_add_backlog(struct sock *sk, struct sk_buff *s
if (sk_rcvqueues_full(sk, skb, limit))
return -ENOBUFS;

+ /*
+ * If the skb was allocated from pfmemalloc reserves, only
+ * allow SOCK_MEMALLOC sockets to use it as this socket is
+ * helping free memory
+ */
+ if (skb_pfmemalloc(skb) && !sock_flag(sk, SOCK_MEMALLOC))
+ return -ENOMEM;
+
__sk_add_backlog(sk, skb);
sk->sk_backlog.len += skb->truesize;
return 0;
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index a19262a7d70b..bbe957762ace 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -4113,7 +4113,7 @@ static void __cond_resched(void)

int __sched _cond_resched(void)
{
- if (should_resched()) {
+ if (should_resched(0)) {
__cond_resched();
return 1;
}
@@ -4131,7 +4131,7 @@ EXPORT_SYMBOL(_cond_resched);
*/
int __cond_resched_lock(spinlock_t *lock)
{
- int resched = should_resched();
+ int resched = should_resched(PREEMPT_LOCK_OFFSET);
int ret = 0;

lockdep_assert_held(lock);
@@ -4153,7 +4153,7 @@ int __sched __cond_resched_softirq(void)
{
BUG_ON(!in_softirq());

- if (should_resched()) {
+ if (should_resched(SOFTIRQ_DISABLE_OFFSET)) {
local_bh_enable();
__cond_resched();
local_bh_disable();
diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index 423c9e37a9e7..646a8b81bee1 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -1475,13 +1475,13 @@ static void __queue_delayed_work(int cpu, struct workqueue_struct *wq,
timer_stats_timer_set_start_info(&dwork->timer);

dwork->wq = wq;
+ /* timer isn't guaranteed to run in this cpu, record earlier */
+ if (cpu == WORK_CPU_UNBOUND)
+ cpu = raw_smp_processor_id();
dwork->cpu = cpu;
timer->expires = jiffies + delay;

- if (unlikely(cpu != WORK_CPU_UNBOUND))
- add_timer_on(timer, cpu);
- else
- add_timer(timer);
+ add_timer_on(timer, cpu);
}

/**
diff --git a/net/core/ethtool.c b/net/core/ethtool.c
index 30071dec287a..0b39ab6f7675 100644
--- a/net/core/ethtool.c
+++ b/net/core/ethtool.c
@@ -1080,7 +1080,7 @@ static int ethtool_get_strings(struct net_device *dev, void __user *useraddr)

gstrings.len = ret;

- data = kmalloc(gstrings.len * ETH_GSTRING_LEN, GFP_USER);
+ data = kcalloc(gstrings.len, ETH_GSTRING_LEN, GFP_USER);
if (!data)
return -ENOMEM;

diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index 8207f8d7f665..366f7ff741b7 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -2862,11 +2862,12 @@ EXPORT_SYMBOL(skb_append_datato_frags);
*/
unsigned char *skb_pull_rcsum(struct sk_buff *skb, unsigned int len)
{
+ unsigned char *data = skb->data;
+
BUG_ON(len > skb->len);
- skb->len -= len;
- BUG_ON(skb->len < skb->data_len);
- skb_postpull_rcsum(skb, skb->data, len);
- return skb->data += len;
+ __skb_pull(skb, len);
+ skb_postpull_rcsum(skb, data, len);
+ return skb->data;
}
EXPORT_SYMBOL_GPL(skb_pull_rcsum);

diff --git a/net/l2tp/l2tp_core.c b/net/l2tp/l2tp_core.c
index 85d9d94c0a3c..3679bd6000d7 100644
--- a/net/l2tp/l2tp_core.c
+++ b/net/l2tp/l2tp_core.c
@@ -1435,7 +1435,7 @@ static void l2tp_tunnel_del_work(struct work_struct *work)
tunnel = container_of(work, struct l2tp_tunnel, del_work);
sk = l2tp_tunnel_sock_lookup(tunnel);
if (!sk)
- return;
+ goto out;

sock = sk->sk_socket;

@@ -1456,6 +1456,8 @@ static void l2tp_tunnel_del_work(struct work_struct *work)
}

l2tp_tunnel_sock_put(sk);
+out:
+ l2tp_tunnel_dec_refcount(tunnel);
}

/* Create a socket for the tunnel, if one isn't set up by
@@ -1785,8 +1787,13 @@ EXPORT_SYMBOL_GPL(l2tp_tunnel_create);
*/
int l2tp_tunnel_delete(struct l2tp_tunnel *tunnel)
{
+ l2tp_tunnel_inc_refcount(tunnel);
l2tp_tunnel_closeall(tunnel);
- return (false == queue_work(l2tp_wq, &tunnel->del_work));
+ if (false == queue_work(l2tp_wq, &tunnel->del_work)) {
+ l2tp_tunnel_dec_refcount(tunnel);
+ return 1;
+ }
+ return 0;
}
EXPORT_SYMBOL_GPL(l2tp_tunnel_delete);

diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c
index 4757f1cf6237..4affedbe0206 100644
--- a/net/unix/af_unix.c
+++ b/net/unix/af_unix.c
@@ -1956,6 +1956,11 @@ static int unix_stream_recvmsg(struct kiocb *iocb, struct socket *sock,
goto out;
}

+ if (flags & MSG_PEEK)
+ skip = sk_peek_offset(sk, flags);
+ else
+ skip = 0;
+
do {
int chunk;
struct sk_buff *skb, *last;
@@ -2002,7 +2007,6 @@ again:
break;
}

- skip = sk_peek_offset(sk, flags);
while (skip >= unix_skb_len(skb)) {
skip -= unix_skb_len(skb);
last = skb;
@@ -2066,6 +2070,16 @@ again:

sk_peek_offset_fwd(sk, chunk);

+ if (UNIXCB(skb).fp)
+ break;
+
+ skip = 0;
+ last = skb;
+ unix_state_lock(sk);
+ skb = skb_peek_next(skb, &sk->sk_receive_queue);
+ if (skb)
+ goto again;
+ unix_state_unlock(sk);
break;
}
} while (size);
--
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