lkml.org 
[lkml]   [2016]   [Aug]   [16]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
SubjectRe: Linux 3.14.76
diff --git a/Makefile b/Makefile
index 9e6e6131e986..306fd306906b 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
VERSION = 3
PATCHLEVEL = 14
-SUBLEVEL = 75
+SUBLEVEL = 76
EXTRAVERSION =
NAME = Remembering Coco

diff --git a/arch/arm/kernel/sys_oabi-compat.c b/arch/arm/kernel/sys_oabi-compat.c
index 3e94811690ce..a0aee80b608d 100644
--- a/arch/arm/kernel/sys_oabi-compat.c
+++ b/arch/arm/kernel/sys_oabi-compat.c
@@ -275,8 +275,12 @@ asmlinkage long sys_oabi_epoll_wait(int epfd,
mm_segment_t fs;
long ret, err, i;

- if (maxevents <= 0 || maxevents > (INT_MAX/sizeof(struct epoll_event)))
+ if (maxevents <= 0 ||
+ maxevents > (INT_MAX/sizeof(*kbuf)) ||
+ maxevents > (INT_MAX/sizeof(*events)))
return -EINVAL;
+ if (!access_ok(VERIFY_WRITE, events, sizeof(*events) * maxevents))
+ return -EFAULT;
kbuf = kmalloc(sizeof(*kbuf) * maxevents, GFP_KERNEL);
if (!kbuf)
return -ENOMEM;
@@ -313,6 +317,8 @@ asmlinkage long sys_oabi_semtimedop(int semid,

if (nsops < 1 || nsops > SEMOPM)
return -EINVAL;
+ if (!access_ok(VERIFY_READ, tsops, sizeof(*tsops) * nsops))
+ return -EFAULT;
sops = kmalloc(sizeof(*sops) * nsops, GFP_KERNEL);
if (!sops)
return -ENOMEM;
diff --git a/arch/mips/kernel/scall64-n32.S b/arch/mips/kernel/scall64-n32.S
index f7e5b72cf481..79747b85777a 100644
--- a/arch/mips/kernel/scall64-n32.S
+++ b/arch/mips/kernel/scall64-n32.S
@@ -350,7 +350,7 @@ EXPORT(sysn32_call_table)
PTR sys_ni_syscall /* available, was setaltroot */
PTR sys_add_key
PTR sys_request_key
- PTR sys_keyctl /* 6245 */
+ PTR compat_sys_keyctl /* 6245 */
PTR sys_set_thread_area
PTR sys_inotify_init
PTR sys_inotify_add_watch
diff --git a/arch/mips/kernel/scall64-o32.S b/arch/mips/kernel/scall64-o32.S
index 6788727d91af..af499022f3fb 100644
--- a/arch/mips/kernel/scall64-o32.S
+++ b/arch/mips/kernel/scall64-o32.S
@@ -474,7 +474,7 @@ EXPORT(sys32_call_table)
PTR sys_ni_syscall /* available, was setaltroot */
PTR sys_add_key /* 4280 */
PTR sys_request_key
- PTR sys_keyctl
+ PTR compat_sys_keyctl
PTR sys_set_thread_area
PTR sys_inotify_init
PTR sys_inotify_add_watch /* 4285 */
diff --git a/arch/x86/include/asm/mmu_context.h b/arch/x86/include/asm/mmu_context.h
index be12c534fd59..29a3d1b00ca9 100644
--- a/arch/x86/include/asm/mmu_context.h
+++ b/arch/x86/include/asm/mmu_context.h
@@ -42,7 +42,34 @@ static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
#endif
cpumask_set_cpu(cpu, mm_cpumask(next));

- /* Re-load page tables */
+ /*
+ * Re-load page tables.
+ *
+ * This logic has an ordering constraint:
+ *
+ * CPU 0: Write to a PTE for 'next'
+ * CPU 0: load bit 1 in mm_cpumask. if nonzero, send IPI.
+ * CPU 1: set bit 1 in next's mm_cpumask
+ * CPU 1: load from the PTE that CPU 0 writes (implicit)
+ *
+ * We need to prevent an outcome in which CPU 1 observes
+ * the new PTE value and CPU 0 observes bit 1 clear in
+ * mm_cpumask. (If that occurs, then the IPI will never
+ * be sent, and CPU 0's TLB will contain a stale entry.)
+ *
+ * The bad outcome can occur if either CPU's load is
+ * reordered before that CPU's store, so both CPUs must
+ * execute full barriers to prevent this from happening.
+ *
+ * Thus, switch_mm needs a full barrier between the
+ * store to mm_cpumask and any operation that could load
+ * from next->pgd. TLB fills are special and can happen
+ * due to instruction fetches or for no reason at all,
+ * and neither LOCK nor MFENCE orders them.
+ * Fortunately, load_cr3() is serializing and gives the
+ * ordering guarantee we need.
+ *
+ */
load_cr3(next->pgd);

/* Stop flush ipis for the previous mm */
@@ -65,10 +92,14 @@ static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
* schedule, protecting us from simultaneous changes.
*/
cpumask_set_cpu(cpu, mm_cpumask(next));
+
/*
* We were in lazy tlb mode and leave_mm disabled
* tlb flush IPI delivery. We must reload CR3
* to make sure to use no freed page tables.
+ *
+ * As above, load_cr3() is serializing and orders TLB
+ * fills with respect to the mm_cpumask write.
*/
load_cr3(next->pgd);
load_LDT_nolock(&next->context);
diff --git a/arch/x86/mm/tlb.c b/arch/x86/mm/tlb.c
index dd8dda167a24..46e82e75192e 100644
--- a/arch/x86/mm/tlb.c
+++ b/arch/x86/mm/tlb.c
@@ -152,7 +152,10 @@ void flush_tlb_current_task(void)
preempt_disable();

count_vm_tlb_event(NR_TLB_LOCAL_FLUSH_ALL);
+
+ /* This is an implicit full barrier that synchronizes with switch_mm. */
local_flush_tlb();
+
if (cpumask_any_but(mm_cpumask(mm), smp_processor_id()) < nr_cpu_ids)
flush_tlb_others(mm_cpumask(mm), mm, 0UL, TLB_FLUSH_ALL);
preempt_enable();
@@ -166,11 +169,19 @@ void flush_tlb_mm_range(struct mm_struct *mm, unsigned long start,
unsigned long nr_base_pages;

preempt_disable();
- if (current->active_mm != mm)
+ if (current->active_mm != mm) {
+ /* Synchronize with switch_mm. */
+ smp_mb();
+
goto flush_all;
+ }

if (!current->mm) {
leave_mm(smp_processor_id());
+
+ /* Synchronize with switch_mm. */
+ smp_mb();
+
goto flush_all;
}

@@ -222,10 +233,18 @@ void flush_tlb_page(struct vm_area_struct *vma, unsigned long start)
preempt_disable();

if (current->active_mm == mm) {
- if (current->mm)
+ if (current->mm) {
+ /*
+ * Implicit full barrier (INVLPG) that synchronizes
+ * with switch_mm.
+ */
__flush_tlb_one(start);
- else
+ } else {
leave_mm(smp_processor_id());
+
+ /* Synchronize with switch_mm. */
+ smp_mb();
+ }
}

if (cpumask_any_but(mm_cpumask(mm), smp_processor_id()) < nr_cpu_ids)
diff --git a/block/genhd.c b/block/genhd.c
index 9316f5fd416f..38d4ba122a43 100644
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -829,6 +829,7 @@ static void disk_seqf_stop(struct seq_file *seqf, void *v)
if (iter) {
class_dev_iter_exit(iter);
kfree(iter);
+ seqf->private = NULL;
}
}

diff --git a/crypto/gcm.c b/crypto/gcm.c
index f0bd00b15f26..d2a0f7371cf0 100644
--- a/crypto/gcm.c
+++ b/crypto/gcm.c
@@ -716,7 +716,9 @@ static struct crypto_instance *crypto_gcm_alloc_common(struct rtattr **tb,

ghash_alg = crypto_find_alg(ghash_name, &crypto_ahash_type,
CRYPTO_ALG_TYPE_HASH,
- CRYPTO_ALG_TYPE_AHASH_MASK);
+ CRYPTO_ALG_TYPE_AHASH_MASK |
+ crypto_requires_sync(algt->type,
+ algt->mask));
if (IS_ERR(ghash_alg))
return ERR_CAST(ghash_alg);

diff --git a/crypto/scatterwalk.c b/crypto/scatterwalk.c
index 79ca2278c2a3..0ec7a6fa3d4d 100644
--- a/crypto/scatterwalk.c
+++ b/crypto/scatterwalk.c
@@ -68,7 +68,8 @@ static void scatterwalk_pagedone(struct scatter_walk *walk, int out,

void scatterwalk_done(struct scatter_walk *walk, int out, int more)
{
- if (!(scatterwalk_pagelen(walk) & (PAGE_SIZE - 1)) || !more)
+ if (!more || walk->offset >= walk->sg->offset + walk->sg->length ||
+ !(walk->offset & (PAGE_SIZE - 1)))
scatterwalk_pagedone(walk, out, more);
}
EXPORT_SYMBOL_GPL(scatterwalk_done);
diff --git a/drivers/char/random.c b/drivers/char/random.c
index 8a64dbeae7b1..d20ac1997886 100644
--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -698,15 +698,18 @@ retry:
}
}

-static void credit_entropy_bits_safe(struct entropy_store *r, int nbits)
+static int credit_entropy_bits_safe(struct entropy_store *r, int nbits)
{
const int nbits_max = (int)(~0U >> (ENTROPY_SHIFT + 1));

+ if (nbits < 0)
+ return -EINVAL;
+
/* Cap the value to avoid overflows */
nbits = min(nbits, nbits_max);
- nbits = max(nbits, -nbits_max);

credit_entropy_bits(r, nbits);
+ return 0;
}

/*********************************************************************
@@ -1420,8 +1423,7 @@ static long random_ioctl(struct file *f, unsigned int cmd, unsigned long arg)
return -EPERM;
if (get_user(ent_count, p))
return -EFAULT;
- credit_entropy_bits_safe(&input_pool, ent_count);
- return 0;
+ return credit_entropy_bits_safe(&input_pool, ent_count);
case RNDADDENTROPY:
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
@@ -1435,8 +1437,7 @@ static long random_ioctl(struct file *f, unsigned int cmd, unsigned long arg)
size);
if (retval < 0)
return retval;
- credit_entropy_bits_safe(&input_pool, ent_count);
- return 0;
+ return credit_entropy_bits_safe(&input_pool, ent_count);
case RNDZAPENTCNT:
case RNDCLEARPOOL:
/*
diff --git a/drivers/infiniband/core/ucm.c b/drivers/infiniband/core/ucm.c
index f2f63933e8a9..5befec118a18 100644
--- a/drivers/infiniband/core/ucm.c
+++ b/drivers/infiniband/core/ucm.c
@@ -48,6 +48,7 @@

#include <asm/uaccess.h>

+#include <rdma/ib.h>
#include <rdma/ib_cm.h>
#include <rdma/ib_user_cm.h>
#include <rdma/ib_marshall.h>
@@ -1104,6 +1105,9 @@ static ssize_t ib_ucm_write(struct file *filp, const char __user *buf,
struct ib_ucm_cmd_hdr hdr;
ssize_t result;

+ if (WARN_ON_ONCE(!ib_safe_file_access(filp)))
+ return -EACCES;
+
if (len < sizeof(hdr))
return -EINVAL;

diff --git a/drivers/infiniband/core/ucma.c b/drivers/infiniband/core/ucma.c
index 45d67e9228d7..81dd84d0b68b 100644
--- a/drivers/infiniband/core/ucma.c
+++ b/drivers/infiniband/core/ucma.c
@@ -1487,6 +1487,9 @@ static ssize_t ucma_write(struct file *filp, const char __user *buf,
struct rdma_ucm_cmd_hdr hdr;
ssize_t ret;

+ if (WARN_ON_ONCE(!ib_safe_file_access(filp)))
+ return -EACCES;
+
if (len < sizeof(hdr))
return -EINVAL;

diff --git a/drivers/infiniband/core/uverbs_main.c b/drivers/infiniband/core/uverbs_main.c
index 8802d5ccd93d..f3ecfe4b9571 100644
--- a/drivers/infiniband/core/uverbs_main.c
+++ b/drivers/infiniband/core/uverbs_main.c
@@ -48,6 +48,8 @@

#include <asm/uaccess.h>

+#include <rdma/ib.h>
+
#include "uverbs.h"

MODULE_AUTHOR("Roland Dreier");
@@ -605,6 +607,9 @@ static ssize_t ib_uverbs_write(struct file *filp, const char __user *buf,
struct ib_uverbs_cmd_hdr hdr;
__u32 flags;

+ if (WARN_ON_ONCE(!ib_safe_file_access(filp)))
+ return -EACCES;
+
if (count < sizeof hdr)
return -EINVAL;

diff --git a/drivers/infiniband/hw/ipath/ipath_file_ops.c b/drivers/infiniband/hw/ipath/ipath_file_ops.c
index 6d7f453b4d05..34aeb14f486a 100644
--- a/drivers/infiniband/hw/ipath/ipath_file_ops.c
+++ b/drivers/infiniband/hw/ipath/ipath_file_ops.c
@@ -45,6 +45,8 @@
#include <linux/cpu.h>
#include <asm/pgtable.h>

+#include "rdma/ib.h"
+
#include "ipath_kernel.h"
#include "ipath_common.h"
#include "ipath_user_sdma.h"
@@ -2240,6 +2242,9 @@ static ssize_t ipath_write(struct file *fp, const char __user *data,
ssize_t ret = 0;
void *dest;

+ if (WARN_ON_ONCE(!ib_safe_file_access(fp)))
+ return -EACCES;
+
if (count < sizeof(cmd.type)) {
ret = -EINVAL;
goto bail;
diff --git a/drivers/infiniband/hw/qib/qib_file_ops.c b/drivers/infiniband/hw/qib/qib_file_ops.c
index 2023cd61b897..3c089ca85c64 100644
--- a/drivers/infiniband/hw/qib/qib_file_ops.c
+++ b/drivers/infiniband/hw/qib/qib_file_ops.c
@@ -45,6 +45,8 @@
#include <linux/delay.h>
#include <linux/export.h>

+#include <rdma/ib.h>
+
#include "qib.h"
#include "qib_common.h"
#include "qib_user_sdma.h"
@@ -2058,6 +2060,9 @@ static ssize_t qib_write(struct file *fp, const char __user *data,
ssize_t ret = 0;
void *dest;

+ if (WARN_ON_ONCE(!ib_safe_file_access(fp)))
+ return -EACCES;
+
if (count < sizeof(cmd.type)) {
ret = -EINVAL;
goto bail;
diff --git a/drivers/net/bonding/bond_netlink.c b/drivers/net/bonding/bond_netlink.c
index 70651f8e8e3b..e6fc358add9f 100644
--- a/drivers/net/bonding/bond_netlink.c
+++ b/drivers/net/bonding/bond_netlink.c
@@ -360,7 +360,11 @@ static int bond_newlink(struct net *src_net, struct net_device *bond_dev,
if (err < 0)
return err;

- return register_netdevice(bond_dev);
+ err = register_netdevice(bond_dev);
+
+ netif_carrier_off(bond_dev);
+
+ return err;
}

static size_t bond_get_size(const struct net_device *bond_dev)
diff --git a/drivers/net/usb/cdc_ncm.c b/drivers/net/usb/cdc_ncm.c
index 584504e6e95c..df544c93735b 100644
--- a/drivers/net/usb/cdc_ncm.c
+++ b/drivers/net/usb/cdc_ncm.c
@@ -571,24 +571,13 @@ EXPORT_SYMBOL_GPL(cdc_ncm_select_altsetting);

static int cdc_ncm_bind(struct usbnet *dev, struct usb_interface *intf)
{
- int ret;
-
/* MBIM backwards compatible function? */
cdc_ncm_select_altsetting(dev, intf);
if (cdc_ncm_comm_intf_is_mbim(intf->cur_altsetting))
return -ENODEV;

/* NCM data altsetting is always 1 */
- ret = cdc_ncm_bind_common(dev, intf, 1);
-
- /*
- * We should get an event when network connection is "connected" or
- * "disconnected". Set network connection in "disconnected" state
- * (carrier is OFF) during attach, so the IP network stack does not
- * start IPv6 negotiation and more.
- */
- usbnet_link_change(dev, 0, 0);
- return ret;
+ return cdc_ncm_bind_common(dev, intf, 1);
}

static void cdc_ncm_align_tail(struct sk_buff *skb, size_t modulus, size_t remainder, size_t max)
@@ -1117,7 +1106,8 @@ static int cdc_ncm_check_connect(struct usbnet *dev)

static const struct driver_info cdc_ncm_info = {
.description = "CDC NCM",
- .flags = FLAG_POINTTOPOINT | FLAG_NO_SETINT | FLAG_MULTI_PACKET,
+ .flags = FLAG_POINTTOPOINT | FLAG_NO_SETINT | FLAG_MULTI_PACKET
+ | FLAG_LINK_INTR,
.bind = cdc_ncm_bind,
.unbind = cdc_ncm_unbind,
.check_connect = cdc_ncm_check_connect,
@@ -1131,7 +1121,7 @@ static const struct driver_info cdc_ncm_info = {
static const struct driver_info wwan_info = {
.description = "Mobile Broadband Network Device",
.flags = FLAG_POINTTOPOINT | FLAG_NO_SETINT | FLAG_MULTI_PACKET
- | FLAG_WWAN,
+ | FLAG_LINK_INTR | FLAG_WWAN,
.bind = cdc_ncm_bind,
.unbind = cdc_ncm_unbind,
.check_connect = cdc_ncm_check_connect,
@@ -1145,7 +1135,7 @@ static const struct driver_info wwan_info = {
static const struct driver_info wwan_noarp_info = {
.description = "Mobile Broadband Network Device (NO ARP)",
.flags = FLAG_POINTTOPOINT | FLAG_NO_SETINT | FLAG_MULTI_PACKET
- | FLAG_WWAN | FLAG_NOARP,
+ | FLAG_LINK_INTR | FLAG_WWAN | FLAG_NOARP,
.bind = cdc_ncm_bind,
.unbind = cdc_ncm_unbind,
.check_connect = cdc_ncm_check_connect,
diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
index 719bd8257520..293155e0571d 100644
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -540,66 +540,6 @@ void scsi_run_host_queues(struct Scsi_Host *shost)

static void __scsi_release_buffers(struct scsi_cmnd *, int);

-/*
- * Function: scsi_end_request()
- *
- * Purpose: Post-processing of completed commands (usually invoked at end
- * of upper level post-processing and scsi_io_completion).
- *
- * Arguments: cmd - command that is complete.
- * error - 0 if I/O indicates success, < 0 for I/O error.
- * bytes - number of bytes of completed I/O
- * requeue - indicates whether we should requeue leftovers.
- *
- * Lock status: Assumed that lock is not held upon entry.
- *
- * Returns: cmd if requeue required, NULL otherwise.
- *
- * Notes: This is called for block device requests in order to
- * mark some number of sectors as complete.
- *
- * We are guaranteeing that the request queue will be goosed
- * at some point during this call.
- * Notes: If cmd was requeued, upon return it will be a stale pointer.
- */
-static struct scsi_cmnd *scsi_end_request(struct scsi_cmnd *cmd, int error,
- int bytes, int requeue)
-{
- struct request_queue *q = cmd->device->request_queue;
- struct request *req = cmd->request;
-
- /*
- * If there are blocks left over at the end, set up the command
- * to queue the remainder of them.
- */
- if (blk_end_request(req, error, bytes)) {
- /* kill remainder if no retrys */
- if (error && scsi_noretry_cmd(cmd))
- blk_end_request_all(req, error);
- else {
- if (requeue) {
- /*
- * Bleah. Leftovers again. Stick the
- * leftovers in the front of the
- * queue, and goose the queue again.
- */
- scsi_release_buffers(cmd);
- scsi_requeue_command(q, cmd);
- cmd = NULL;
- }
- return cmd;
- }
- }
-
- /*
- * This will goose the queue request function at the end, so we don't
- * need to worry about launching another command.
- */
- __scsi_release_buffers(cmd, 0);
- scsi_next_command(cmd);
- return NULL;
-}
-
static inline unsigned int scsi_sgtable_index(unsigned short nents)
{
unsigned int index;
@@ -751,16 +691,9 @@ static int __scsi_error_from_host_byte(struct scsi_cmnd *cmd, int result)
*
* Returns: Nothing
*
- * Notes: This function is matched in terms of capabilities to
- * the function that created the scatter-gather list.
- * In other words, if there are no bounce buffers
- * (the normal case for most drivers), we don't need
- * the logic to deal with cleaning up afterwards.
- *
- * We must call scsi_end_request(). This will finish off
- * the specified number of sectors. If we are done, the
- * command block will be released and the queue function
- * will be goosed. If we are not done then we have to
+ * Notes: We will finish off the specified number of sectors. If we
+ * are done, the command block will be released and the queue
+ * function will be goosed. If we are not done then we have to
* figure out what to do next:
*
* a) We can call scsi_requeue_command(). The request
@@ -769,7 +702,7 @@ static int __scsi_error_from_host_byte(struct scsi_cmnd *cmd, int result)
* be used if we made forward progress, or if we want
* to switch from READ(10) to READ(6) for example.
*
- * b) We can call scsi_queue_insert(). The request will
+ * b) We can call __scsi_queue_insert(). The request will
* be put back on the queue and retried using the same
* command as before, possibly after a delay.
*
@@ -873,12 +806,28 @@ void scsi_io_completion(struct scsi_cmnd *cmd, unsigned int good_bytes)
}

/*
- * A number of bytes were successfully read. If there
- * are leftovers and there is some kind of error
- * (result != 0), retry the rest.
+ * special case: failed zero length commands always need to
+ * drop down into the retry code. Otherwise, if we finished
+ * all bytes in the request we are done now.
*/
- if (scsi_end_request(cmd, error, good_bytes, result == 0) == NULL)
- return;
+ if (!(blk_rq_bytes(req) == 0 && error) &&
+ !blk_end_request(req, error, good_bytes))
+ goto next_command;
+
+ /*
+ * Kill remainder if no retrys.
+ */
+ if (error && scsi_noretry_cmd(cmd)) {
+ blk_end_request_all(req, error);
+ goto next_command;
+ }
+
+ /*
+ * If there had been no error, but we have leftover bytes in the
+ * requeues just queue the command up again.
+ */
+ if (result == 0)
+ goto requeue;

error = __scsi_error_from_host_byte(cmd, result);

@@ -1000,7 +949,6 @@ void scsi_io_completion(struct scsi_cmnd *cmd, unsigned int good_bytes)
switch (action) {
case ACTION_FAIL:
/* Give up and fail the remainder of the request */
- scsi_release_buffers(cmd);
if (!(req->cmd_flags & REQ_QUIET)) {
if (description)
scmd_printk(KERN_INFO, cmd, "%s\n",
@@ -1010,12 +958,11 @@ void scsi_io_completion(struct scsi_cmnd *cmd, unsigned int good_bytes)
scsi_print_sense("", cmd);
scsi_print_command(cmd);
}
- if (blk_end_request_err(req, error))
- scsi_requeue_command(q, cmd);
- else
- scsi_next_command(cmd);
- break;
+ if (!blk_end_request_err(req, error))
+ goto next_command;
+ /*FALLTHRU*/
case ACTION_REPREP:
+ requeue:
/* Unprep the request and put it back at the head of the queue.
* A new command will be prepared and issued.
*/
@@ -1031,6 +978,11 @@ void scsi_io_completion(struct scsi_cmnd *cmd, unsigned int good_bytes)
__scsi_queue_insert(cmd, SCSI_MLQUEUE_DEVICE_BUSY, 0);
break;
}
+ return;
+
+next_command:
+ __scsi_release_buffers(cmd, 0);
+ scsi_next_command(cmd);
}

static int scsi_init_sgtable(struct request *req, struct scsi_data_buffer *sdb,
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index dcee3f09793d..f46ac929ef8a 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -106,6 +106,7 @@ EXPORT_SYMBOL_GPL(ehci_cf_port_reset_rwsem);
#define HUB_DEBOUNCE_STEP 25
#define HUB_DEBOUNCE_STABLE 100

+static void hub_release(struct kref *kref);
static int usb_reset_and_verify_device(struct usb_device *udev);

static inline char *portspeed(struct usb_hub *hub, int portstatus)
@@ -1023,10 +1024,20 @@ static void hub_activate(struct usb_hub *hub, enum hub_activation_type type)
unsigned delay;

/* Continue a partial initialization */
- if (type == HUB_INIT2)
- goto init2;
- if (type == HUB_INIT3)
+ if (type == HUB_INIT2 || type == HUB_INIT3) {
+ device_lock(hub->intfdev);
+
+ /* Was the hub disconnected while we were waiting? */
+ if (hub->disconnected) {
+ device_unlock(hub->intfdev);
+ kref_put(&hub->kref, hub_release);
+ return;
+ }
+ if (type == HUB_INIT2)
+ goto init2;
goto init3;
+ }
+ kref_get(&hub->kref);

/* The superspeed hub except for root hub has to use Hub Depth
* value as an offset into the route string to locate the bits
@@ -1220,6 +1231,7 @@ static void hub_activate(struct usb_hub *hub, enum hub_activation_type type)
PREPARE_DELAYED_WORK(&hub->init_work, hub_init_func3);
schedule_delayed_work(&hub->init_work,
msecs_to_jiffies(delay));
+ device_unlock(hub->intfdev);
return; /* Continues at init3: below */
} else {
msleep(delay);
@@ -1240,6 +1252,11 @@ static void hub_activate(struct usb_hub *hub, enum hub_activation_type type)
/* Allow autosuspend if it was suppressed */
if (type <= HUB_INIT3)
usb_autopm_put_interface_async(to_usb_interface(hub->intfdev));
+
+ if (type == HUB_INIT2 || type == HUB_INIT3)
+ device_unlock(hub->intfdev);
+
+ kref_put(&hub->kref, hub_release);
}

/* Implement the continuations for the delays above */
diff --git a/drivers/usb/core/quirks.c b/drivers/usb/core/quirks.c
index b6c85fbd0a14..24af5b0b8d81 100644
--- a/drivers/usb/core/quirks.c
+++ b/drivers/usb/core/quirks.c
@@ -164,6 +164,10 @@ static const struct usb_device_id usb_quirk_list[] = {
/* MAYA44USB sound device */
{ USB_DEVICE(0x0a92, 0x0091), .driver_info = USB_QUIRK_RESET_RESUME },

+ /* ASUS Base Station(T100) */
+ { USB_DEVICE(0x0b05, 0x17e0), .driver_info =
+ USB_QUIRK_IGNORE_REMOTE_WAKEUP },
+
/* Action Semiconductor flash disk */
{ USB_DEVICE(0x10d6, 0x2200), .driver_info =
USB_QUIRK_STRING_FETCH_255 },
@@ -186,10 +190,6 @@ static const struct usb_device_id usb_interface_quirk_list[] = {
{ USB_VENDOR_AND_INTERFACE_INFO(0x046d, USB_CLASS_VIDEO, 1, 0),
.driver_info = USB_QUIRK_RESET_RESUME },

- /* ASUS Base Station(T100) */
- { USB_DEVICE(0x0b05, 0x17e0), .driver_info =
- USB_QUIRK_IGNORE_REMOTE_WAKEUP },
-
{ } /* terminating entry must be last */
};

diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index a3be02e03021..0bffd9a0fbf2 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -359,9 +359,13 @@ static int ext4_valid_extent(struct inode *inode, struct ext4_extent *ext)
ext4_fsblk_t block = ext4_ext_pblock(ext);
int len = ext4_ext_get_actual_len(ext);
ext4_lblk_t lblock = le32_to_cpu(ext->ee_block);
- ext4_lblk_t last = lblock + len - 1;

- if (len == 0 || lblock > last)
+ /*
+ * We allow neither:
+ * - zero length
+ * - overflow/wrap-around
+ */
+ if (lblock + len <= lblock)
return 0;
return ext4_data_block_valid(EXT4_SB(inode->i_sb), block, len);
}
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 58001fcff037..774cb09519cb 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -204,9 +204,9 @@ void ext4_evict_inode(struct inode *inode)
* Note that directories do not have this problem because they
* don't use page cache.
*/
- if (ext4_should_journal_data(inode) &&
- (S_ISLNK(inode->i_mode) || S_ISREG(inode->i_mode)) &&
- inode->i_ino != EXT4_JOURNAL_INO) {
+ if (inode->i_ino != EXT4_JOURNAL_INO &&
+ ext4_should_journal_data(inode) &&
+ (S_ISLNK(inode->i_mode) || S_ISREG(inode->i_mode))) {
journal_t *journal = EXT4_SB(inode->i_sb)->s_journal;
tid_t commit_tid = EXT4_I(inode)->i_datasync_tid;

@@ -2579,13 +2579,36 @@ retry:
done = true;
}
}
- ext4_journal_stop(handle);
+ /*
+ * Caution: If the handle is synchronous,
+ * ext4_journal_stop() can wait for transaction commit
+ * to finish which may depend on writeback of pages to
+ * complete or on page lock to be released. In that
+ * case, we have to wait until after after we have
+ * submitted all the IO, released page locks we hold,
+ * and dropped io_end reference (for extent conversion
+ * to be able to complete) before stopping the handle.
+ */
+ if (!ext4_handle_valid(handle) || handle->h_sync == 0) {
+ ext4_journal_stop(handle);
+ handle = NULL;
+ }
/* Submit prepared bio */
ext4_io_submit(&mpd.io_submit);
/* Unlock pages we didn't use */
mpage_release_unused_pages(&mpd, give_up_on_write);
- /* Drop our io_end reference we got from init */
- ext4_put_io_end(mpd.io_submit.io_end);
+ /*
+ * Drop our io_end reference we got from init. We have
+ * to be careful and use deferred io_end finishing if
+ * we are still holding the transaction as we can
+ * release the last reference to io_end which may end
+ * up doing unwritten extent conversion.
+ */
+ if (handle) {
+ ext4_put_io_end_defer(mpd.io_submit.io_end);
+ ext4_journal_stop(handle);
+ } else
+ ext4_put_io_end(mpd.io_submit.io_end);

if (ret == -ENOSPC && sbi->s_journal) {
/*
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index 4a79ce1ecaa1..fcb205f69ed6 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -2897,7 +2897,7 @@ ext4_mb_mark_diskspace_used(struct ext4_allocation_context *ac,
ext4_error(sb, "Allocating blocks %llu-%llu which overlap "
"fs metadata", block, block+len);
/* File system mounted not to panic on error
- * Fix the bitmap and repeat the block allocation
+ * Fix the bitmap and return EUCLEAN
* We leak some of the blocks here.
*/
ext4_lock_group(sb, ac->ac_b_ex.fe_group);
@@ -2906,7 +2906,7 @@ ext4_mb_mark_diskspace_used(struct ext4_allocation_context *ac,
ext4_unlock_group(sb, ac->ac_b_ex.fe_group);
err = ext4_handle_dirty_metadata(handle, NULL, bitmap_bh);
if (!err)
- err = -EAGAIN;
+ err = -EUCLEAN;
goto out_err;
}

@@ -4476,18 +4476,7 @@ repeat:
}
if (likely(ac->ac_status == AC_STATUS_FOUND)) {
*errp = ext4_mb_mark_diskspace_used(ac, handle, reserv_clstrs);
- if (*errp == -EAGAIN) {
- /*
- * drop the reference that we took
- * in ext4_mb_use_best_found
- */
- ext4_mb_release_context(ac);
- ac->ac_b_ex.fe_group = 0;
- ac->ac_b_ex.fe_start = 0;
- ac->ac_b_ex.fe_len = 0;
- ac->ac_status = AC_STATUS_CONTINUE;
- goto repeat;
- } else if (*errp) {
+ if (*errp) {
ext4_discard_allocated_blocks(ac);
goto errout;
} else {
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 64cd8114f75d..4ce824197b81 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -2222,6 +2222,16 @@ static void ext4_orphan_cleanup(struct super_block *sb,
while (es->s_last_orphan) {
struct inode *inode;

+ /*
+ * We may have encountered an error during cleanup; if
+ * so, skip the rest.
+ */
+ if (EXT4_SB(sb)->s_mount_state & EXT4_ERROR_FS) {
+ jbd_debug(1, "Skipping orphan recovery on fs with errors.\n");
+ es->s_last_orphan = 0;
+ break;
+ }
+
inode = ext4_orphan_get(sb, le32_to_cpu(es->s_last_orphan));
if (IS_ERR(inode)) {
es->s_last_orphan = 0;
diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c
index faf00af7f3d7..58737550a3f4 100644
--- a/fs/fuse/inode.c
+++ b/fs/fuse/inode.c
@@ -911,7 +911,7 @@ static void fuse_send_init(struct fuse_conn *fc, struct fuse_req *req)
arg->flags |= FUSE_ASYNC_READ | FUSE_POSIX_LOCKS | FUSE_ATOMIC_O_TRUNC |
FUSE_EXPORT_SUPPORT | FUSE_BIG_WRITES | FUSE_DONT_MASK |
FUSE_SPLICE_WRITE | FUSE_SPLICE_MOVE | FUSE_SPLICE_READ |
- FUSE_FLOCK_LOCKS | FUSE_IOCTL_DIR | FUSE_AUTO_INVAL_DATA |
+ FUSE_FLOCK_LOCKS | FUSE_HAS_IOCTL_DIR | FUSE_AUTO_INVAL_DATA |
FUSE_DO_READDIRPLUS | FUSE_READDIRPLUS_AUTO | FUSE_ASYNC_DIO;
req->in.h.opcode = FUSE_INIT;
req->in.numargs = 1;
diff --git a/include/linux/console.h b/include/linux/console.h
index 7571a16bd653..ac1599bda9fc 100644
--- a/include/linux/console.h
+++ b/include/linux/console.h
@@ -150,6 +150,7 @@ extern int console_trylock(void);
extern void console_unlock(void);
extern void console_conditional_schedule(void);
extern void console_unblank(void);
+extern void console_flush_on_panic(void);
extern struct tty_driver *console_device(int *);
extern void console_stop(struct console *);
extern void console_start(struct console *);
diff --git a/include/rdma/ib.h b/include/rdma/ib.h
index cf8f9e700e48..a6b93706b0fc 100644
--- a/include/rdma/ib.h
+++ b/include/rdma/ib.h
@@ -34,6 +34,7 @@
#define _RDMA_IB_H

#include <linux/types.h>
+#include <linux/sched.h>

struct ib_addr {
union {
@@ -86,4 +87,19 @@ struct sockaddr_ib {
__u64 sib_scope_id;
};

+/*
+ * The IB interfaces that use write() as bi-directional ioctl() are
+ * fundamentally unsafe, since there are lots of ways to trigger "write()"
+ * calls from various contexts with elevated privileges. That includes the
+ * traditional suid executable error message writes, but also various kernel
+ * interfaces that can write to file descriptors.
+ *
+ * This function provides protection for the legacy API by restricting the
+ * calling context.
+ */
+static inline bool ib_safe_file_access(struct file *filp)
+{
+ return filp->f_cred == current_cred() && segment_eq(get_fs(), USER_DS);
+}
+
#endif /* _RDMA_IB_H */
diff --git a/ipc/msg.c b/ipc/msg.c
index 4a036c619607..0d1449551e06 100644
--- a/ipc/msg.c
+++ b/ipc/msg.c
@@ -745,7 +745,7 @@ long do_msgsnd(int msqid, long mtype, void __user *mtext,
rcu_read_lock();
ipc_lock_object(&msq->q_perm);

- ipc_rcu_putref(msq, ipc_rcu_free);
+ ipc_rcu_putref(msq, msg_rcu_free);
/* raced with RMID? */
if (!ipc_valid_object(&msq->q_perm)) {
err = -EIDRM;
diff --git a/ipc/sem.c b/ipc/sem.c
index e53c96f7db42..bd8cbb071166 100644
--- a/ipc/sem.c
+++ b/ipc/sem.c
@@ -441,7 +441,7 @@ static inline struct sem_array *sem_obtain_object_check(struct ipc_namespace *ns
static inline void sem_lock_and_putref(struct sem_array *sma)
{
sem_lock(sma, NULL, -1);
- ipc_rcu_putref(sma, ipc_rcu_free);
+ ipc_rcu_putref(sma, sem_rcu_free);
}

static inline void sem_rmid(struct ipc_namespace *ns, struct sem_array *s)
@@ -1371,7 +1371,7 @@ static int semctl_main(struct ipc_namespace *ns, int semid, int semnum,
rcu_read_unlock();
sem_io = ipc_alloc(sizeof(ushort)*nsems);
if (sem_io == NULL) {
- ipc_rcu_putref(sma, ipc_rcu_free);
+ ipc_rcu_putref(sma, sem_rcu_free);
return -ENOMEM;
}

@@ -1405,20 +1405,20 @@ static int semctl_main(struct ipc_namespace *ns, int semid, int semnum,
if (nsems > SEMMSL_FAST) {
sem_io = ipc_alloc(sizeof(ushort)*nsems);
if (sem_io == NULL) {
- ipc_rcu_putref(sma, ipc_rcu_free);
+ ipc_rcu_putref(sma, sem_rcu_free);
return -ENOMEM;
}
}

if (copy_from_user(sem_io, p, nsems*sizeof(ushort))) {
- ipc_rcu_putref(sma, ipc_rcu_free);
+ ipc_rcu_putref(sma, sem_rcu_free);
err = -EFAULT;
goto out_free;
}

for (i = 0; i < nsems; i++) {
if (sem_io[i] > SEMVMX) {
- ipc_rcu_putref(sma, ipc_rcu_free);
+ ipc_rcu_putref(sma, sem_rcu_free);
err = -ERANGE;
goto out_free;
}
@@ -1708,7 +1708,7 @@ static struct sem_undo *find_alloc_undo(struct ipc_namespace *ns, int semid)
/* step 2: allocate new undo structure */
new = kzalloc(sizeof(struct sem_undo) + sizeof(short)*nsems, GFP_KERNEL);
if (!new) {
- ipc_rcu_putref(sma, ipc_rcu_free);
+ ipc_rcu_putref(sma, sem_rcu_free);
return ERR_PTR(-ENOMEM);
}

diff --git a/kernel/panic.c b/kernel/panic.c
index 6d6300375090..16458b37fadc 100644
--- a/kernel/panic.c
+++ b/kernel/panic.c
@@ -23,6 +23,7 @@
#include <linux/sysrq.h>
#include <linux/init.h>
#include <linux/nmi.h>
+#include <linux/console.h>

#define PANIC_TIMER_STEP 100
#define PANIC_BLINK_SPD 18
@@ -133,6 +134,8 @@ void panic(const char *fmt, ...)

bust_spinlocks(0);

+ console_flush_on_panic();
+
if (!panic_blink)
panic_blink = no_blink;

diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c
index 02e7fb4edb93..2e0406fe1105 100644
--- a/kernel/printk/printk.c
+++ b/kernel/printk/printk.c
@@ -2011,13 +2011,24 @@ void console_unlock(void)
static u64 seen_seq;
unsigned long flags;
bool wake_klogd = false;
- bool retry;
+ bool do_cond_resched, retry;

if (console_suspended) {
up(&console_sem);
return;
}

+ /*
+ * Console drivers are called under logbuf_lock, so
+ * @console_may_schedule should be cleared before; however, we may
+ * end up dumping a lot of lines, for example, if called from
+ * console registration path, and should invoke cond_resched()
+ * between lines if allowable. Not doing so can cause a very long
+ * scheduling stall on a slow console leading to RCU stall and
+ * softlockup warnings which exacerbate the issue with more
+ * messages practically incapacitating the system.
+ */
+ do_cond_resched = console_may_schedule;
console_may_schedule = 0;

/* flush buffered message fragment immediately to console */
@@ -2074,6 +2085,9 @@ skip:
call_console_drivers(level, text, len);
start_critical_timings();
local_irq_restore(flags);
+
+ if (do_cond_resched)
+ cond_resched();
}
console_locked = 0;
mutex_release(&console_lock_dep_map, 1, _RET_IP_);
@@ -2142,6 +2156,25 @@ void console_unblank(void)
console_unlock();
}

+/**
+ * console_flush_on_panic - flush console content on panic
+ *
+ * Immediately output all pending messages no matter what.
+ */
+void console_flush_on_panic(void)
+{
+ /*
+ * If someone else is holding the console lock, trylock will fail
+ * and may_schedule may be set. Ignore and proceed to unlock so
+ * that messages are flushed out. As this can be called from any
+ * context and we don't want to get preempted while flushing,
+ * ensure may_schedule is cleared.
+ */
+ console_trylock();
+ console_may_schedule = 0;
+ console_unlock();
+}
+
/*
* Return the console tty driver structure and its associated index
*/
diff --git a/mm/migrate.c b/mm/migrate.c
index 23ca861c93e9..ae10044bdfa5 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -30,6 +30,7 @@
#include <linux/mempolicy.h>
#include <linux/vmalloc.h>
#include <linux/security.h>
+#include <linux/backing-dev.h>
#include <linux/memcontrol.h>
#include <linux/syscalls.h>
#include <linux/hugetlb.h>
@@ -344,6 +345,8 @@ int migrate_page_move_mapping(struct address_space *mapping,
struct buffer_head *head, enum migrate_mode mode,
int extra_count)
{
+ struct zone *oldzone, *newzone;
+ int dirty;
int expected_count = 1 + extra_count;
void **pslot;

@@ -354,6 +357,9 @@ int migrate_page_move_mapping(struct address_space *mapping,
return MIGRATEPAGE_SUCCESS;
}

+ oldzone = page_zone(page);
+ newzone = page_zone(newpage);
+
spin_lock_irq(&mapping->tree_lock);

pslot = radix_tree_lookup_slot(&mapping->page_tree,
@@ -394,6 +400,13 @@ int migrate_page_move_mapping(struct address_space *mapping,
set_page_private(newpage, page_private(page));
}

+ /* Move dirty while page refs frozen and newpage not yet exposed */
+ dirty = PageDirty(page);
+ if (dirty) {
+ ClearPageDirty(page);
+ SetPageDirty(newpage);
+ }
+
radix_tree_replace_slot(pslot, newpage);

/*
@@ -403,6 +416,9 @@ int migrate_page_move_mapping(struct address_space *mapping,
*/
page_unfreeze_refs(page, expected_count - 1);

+ spin_unlock(&mapping->tree_lock);
+ /* Leave irq disabled to prevent preemption while updating stats */
+
/*
* If moved to a different zone then also account
* the page for that zone. Other VM counters will be
@@ -413,13 +429,19 @@ int migrate_page_move_mapping(struct address_space *mapping,
* via NR_FILE_PAGES and NR_ANON_PAGES if they
* are mapped to swap space.
*/
- __dec_zone_page_state(page, NR_FILE_PAGES);
- __inc_zone_page_state(newpage, NR_FILE_PAGES);
- if (!PageSwapCache(page) && PageSwapBacked(page)) {
- __dec_zone_page_state(page, NR_SHMEM);
- __inc_zone_page_state(newpage, NR_SHMEM);
+ if (newzone != oldzone) {
+ __dec_zone_state(oldzone, NR_FILE_PAGES);
+ __inc_zone_state(newzone, NR_FILE_PAGES);
+ if (PageSwapBacked(page) && !PageSwapCache(page)) {
+ __dec_zone_state(oldzone, NR_SHMEM);
+ __inc_zone_state(newzone, NR_SHMEM);
+ }
+ if (dirty && mapping_cap_account_dirty(mapping)) {
+ __dec_zone_state(oldzone, NR_FILE_DIRTY);
+ __inc_zone_state(newzone, NR_FILE_DIRTY);
+ }
}
- spin_unlock_irq(&mapping->tree_lock);
+ local_irq_enable();

return MIGRATEPAGE_SUCCESS;
}
@@ -544,20 +566,9 @@ void migrate_page_copy(struct page *newpage, struct page *page)
if (PageMappedToDisk(page))
SetPageMappedToDisk(newpage);

- if (PageDirty(page)) {
- clear_page_dirty_for_io(page);
- /*
- * Want to mark the page and the radix tree as dirty, and
- * redo the accounting that clear_page_dirty_for_io undid,
- * but we can't use set_page_dirty because that function
- * is actually a signal that all of the page has become dirty.
- * Whereas only part of our page may be dirty.
- */
- if (PageSwapBacked(page))
- SetPageDirty(newpage);
- else
- __set_page_dirty_nobuffers(newpage);
- }
+ /* Move dirty on pages not done by migrate_page_move_mapping() */
+ if (PageDirty(page))
+ SetPageDirty(newpage);

/*
* Copy NUMA information to the new page, to prevent over-eager
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index 5b10c59ba8a9..90f9d00a3fbc 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -87,7 +87,7 @@ int sysctl_tcp_adv_win_scale __read_mostly = 1;
EXPORT_SYMBOL(sysctl_tcp_adv_win_scale);

/* rfc5961 challenge ack rate limiting */
-int sysctl_tcp_challenge_ack_limit = 100;
+int sysctl_tcp_challenge_ack_limit = 1000;

int sysctl_tcp_stdurg __read_mostly;
int sysctl_tcp_rfc1337 __read_mostly;
@@ -3293,12 +3293,18 @@ static void tcp_send_challenge_ack(struct sock *sk)
static u32 challenge_timestamp;
static unsigned int challenge_count;
u32 now = jiffies / HZ;
+ u32 count;

if (now != challenge_timestamp) {
+ u32 half = (sysctl_tcp_challenge_ack_limit + 1) >> 1;
+
challenge_timestamp = now;
- challenge_count = 0;
+ challenge_count = half +
+ prandom_u32_max(sysctl_tcp_challenge_ack_limit);
}
- if (++challenge_count <= sysctl_tcp_challenge_ack_limit) {
+ count = challenge_count;
+ if (count > 0) {
+ challenge_count = count - 1;
NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_TCPCHALLENGEACK);
tcp_send_ack(sk);
}
diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
index a68cd7100349..99d89783d1e6 100644
--- a/net/ipv4/tcp_output.c
+++ b/net/ipv4/tcp_output.c
@@ -242,7 +242,8 @@ void tcp_select_initial_window(int __space, __u32 mss,
/* Set window scaling on max possible window
* See RFC1323 for an explanation of the limit to 14
*/
- space = max_t(u32, sysctl_tcp_rmem[2], sysctl_rmem_max);
+ space = max_t(u32, space, sysctl_tcp_rmem[2]);
+ space = max_t(u32, space, sysctl_rmem_max);
space = min_t(u32, space, *window_clamp);
while (space > 65535 && (*rcv_wscale) < 14) {
space >>= 1;
diff --git a/net/irda/af_irda.c b/net/irda/af_irda.c
index f945293c17f0..033a7af5914e 100644
--- a/net/irda/af_irda.c
+++ b/net/irda/af_irda.c
@@ -1037,8 +1037,11 @@ static int irda_connect(struct socket *sock, struct sockaddr *uaddr,
}

/* Check if we have opened a local TSAP */
- if (!self->tsap)
- irda_open_tsap(self, LSAP_ANY, addr->sir_name);
+ if (!self->tsap) {
+ err = irda_open_tsap(self, LSAP_ANY, addr->sir_name);
+ if (err)
+ goto out;
+ }

/* Move to connecting socket, start sending Connect Requests */
sock->state = SS_CONNECTING;
diff --git a/net/sctp/sm_sideeffect.c b/net/sctp/sm_sideeffect.c
index fef2acdf4a2e..ecae5561b912 100644
--- a/net/sctp/sm_sideeffect.c
+++ b/net/sctp/sm_sideeffect.c
@@ -244,12 +244,13 @@ void sctp_generate_t3_rtx_event(unsigned long peer)
int error;
struct sctp_transport *transport = (struct sctp_transport *) peer;
struct sctp_association *asoc = transport->asoc;
- struct net *net = sock_net(asoc->base.sk);
+ struct sock *sk = asoc->base.sk;
+ struct net *net = sock_net(sk);

/* Check whether a task is in the sock. */

- bh_lock_sock(asoc->base.sk);
- if (sock_owned_by_user(asoc->base.sk)) {
+ bh_lock_sock(sk);
+ if (sock_owned_by_user(sk)) {
pr_debug("%s: sock is busy\n", __func__);

/* Try again later. */
@@ -272,10 +273,10 @@ void sctp_generate_t3_rtx_event(unsigned long peer)
transport, GFP_ATOMIC);

if (error)
- asoc->base.sk->sk_err = -error;
+ sk->sk_err = -error;

out_unlock:
- bh_unlock_sock(asoc->base.sk);
+ bh_unlock_sock(sk);
sctp_transport_put(transport);
}

@@ -285,11 +286,12 @@ out_unlock:
static void sctp_generate_timeout_event(struct sctp_association *asoc,
sctp_event_timeout_t timeout_type)
{
- struct net *net = sock_net(asoc->base.sk);
+ struct sock *sk = asoc->base.sk;
+ struct net *net = sock_net(sk);
int error = 0;

- bh_lock_sock(asoc->base.sk);
- if (sock_owned_by_user(asoc->base.sk)) {
+ bh_lock_sock(sk);
+ if (sock_owned_by_user(sk)) {
pr_debug("%s: sock is busy: timer %d\n", __func__,
timeout_type);

@@ -312,10 +314,10 @@ static void sctp_generate_timeout_event(struct sctp_association *asoc,
(void *)timeout_type, GFP_ATOMIC);

if (error)
- asoc->base.sk->sk_err = -error;
+ sk->sk_err = -error;

out_unlock:
- bh_unlock_sock(asoc->base.sk);
+ bh_unlock_sock(sk);
sctp_association_put(asoc);
}

@@ -365,10 +367,11 @@ void sctp_generate_heartbeat_event(unsigned long data)
int error = 0;
struct sctp_transport *transport = (struct sctp_transport *) data;
struct sctp_association *asoc = transport->asoc;
- struct net *net = sock_net(asoc->base.sk);
+ struct sock *sk = asoc->base.sk;
+ struct net *net = sock_net(sk);

- bh_lock_sock(asoc->base.sk);
- if (sock_owned_by_user(asoc->base.sk)) {
+ bh_lock_sock(sk);
+ if (sock_owned_by_user(sk)) {
pr_debug("%s: sock is busy\n", __func__);

/* Try again later. */
@@ -389,10 +392,10 @@ void sctp_generate_heartbeat_event(unsigned long data)
transport, GFP_ATOMIC);

if (error)
- asoc->base.sk->sk_err = -error;
+ sk->sk_err = -error;

out_unlock:
- bh_unlock_sock(asoc->base.sk);
+ bh_unlock_sock(sk);
sctp_transport_put(transport);
}

@@ -403,10 +406,11 @@ void sctp_generate_proto_unreach_event(unsigned long data)
{
struct sctp_transport *transport = (struct sctp_transport *) data;
struct sctp_association *asoc = transport->asoc;
- struct net *net = sock_net(asoc->base.sk);
+ struct sock *sk = asoc->base.sk;
+ struct net *net = sock_net(sk);

- bh_lock_sock(asoc->base.sk);
- if (sock_owned_by_user(asoc->base.sk)) {
+ bh_lock_sock(sk);
+ if (sock_owned_by_user(sk)) {
pr_debug("%s: sock is busy\n", __func__);

/* Try again later. */
@@ -427,7 +431,7 @@ void sctp_generate_proto_unreach_event(unsigned long data)
asoc->state, asoc->ep, asoc, transport, GFP_ATOMIC);

out_unlock:
- bh_unlock_sock(asoc->base.sk);
+ bh_unlock_sock(sk);
sctp_association_put(asoc);
}

diff --git a/security/apparmor/apparmorfs.c b/security/apparmor/apparmorfs.c
index 7db9954f1af2..b30489856741 100644
--- a/security/apparmor/apparmorfs.c
+++ b/security/apparmor/apparmorfs.c
@@ -331,6 +331,7 @@ static int aa_fs_seq_hash_show(struct seq_file *seq, void *v)
seq_printf(seq, "%.2x", profile->hash[i]);
seq_puts(seq, "\n");
}
+ aa_put_profile(profile);

return 0;
}
\
 
 \ /
  Last update: 2016-09-17 09:57    [W:0.105 / U:0.160 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site