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Kirill Tkhai dfcce791fb fs/exec.c:de_thread: move notify_count write under lock 
We set sig->notify_count = -1 between RELEASE and ACQUIRE operations:

	spin_unlock_irq(lock);
	...
	if (!thread_group_leader(tsk)) {
		...
                for (;;) {
			sig->notify_count = -1;
                        write_lock_irq(&tasklist_lock);

There are no restriction on it so other processors may see this STORE
mixed with other STOREs in both areas limited by the spinlocks.

Probably, it may be reordered with the above

	sig->group_exit_task = tsk;
	sig->notify_count = zap_other_threads(tsk);

in some way.

Set it under tasklist_lock locked to be sure nothing will be reordered.

Signed-off-by: Kirill Tkhai <ktkhai@parallels.com>
Acked-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-17 09:04:07 -04:00
..
9p
make new_sync_{read,write}() static
2015-04-11 22:29:40 -04:00
adfs
make new_sync_{read,write}() static
2015-04-11 22:29:40 -04:00
affs
Merge branch 'for-linus-1' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2015-04-14 15:31:03 -07:00
afs
make new_sync_{read,write}() static
2015-04-11 22:29:40 -04:00
autofs4
autofs: switch to __vfs_write()
2015-04-11 22:29:37 -04:00
befs
befs: replace typedef befs_inode_info by structure
2015-04-17 09:04:03 -04:00
bfs
make new_sync_{read,write}() static
2015-04-11 22:29:40 -04:00
btrfs
make new_sync_{read,write}() static
2015-04-11 22:29:40 -04:00
cachefiles
Cachefiles: Fix up scripted S_ISDIR/S_ISREG/S_ISLNK conversions
2015-02-22 11:38:41 -05:00
ceph
make new_sync_{read,write}() static
2015-04-11 22:29:40 -04:00
cifs
Merge branch 'for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2015-04-15 13:22:56 -07:00
coda
make new_sync_{read,write}() static
2015-04-11 22:29:40 -04:00
configfs
configfs: Fix potential NULL d_inode dereference
2015-02-20 04:56:43 -05:00
cramfs
…
debugfs
debugfs: allow bad parent pointers to be passed in
2015-04-03 16:30:12 +02:00
devpts
…
dlm
netlink: make nlmsg_end() and genlmsg_end() void
2015-01-18 01:03:45 -05:00
ecryptfs
make new_sync_{read,write}() static
2015-04-11 22:29:40 -04:00
efivarfs
* Move efivarfs from the misc filesystem section to pseudo filesystem,
2015-01-29 19:16:40 +01:00
efs
…
exofs
make new_sync_{read,write}() static
2015-04-11 22:29:40 -04:00
exportfs
VFS: (Scripted) Convert S_ISLNK/DIR/REG(dentry->d_inode) to d_is_*(dentry)
2015-02-22 11:38:41 -05:00
ext2
Merge branch 'akpm' (patches from Andrew)
2015-04-15 16:39:15 -07:00
ext3
make new_sync_{read,write}() static
2015-04-11 22:29:40 -04:00
ext4
Merge branch 'akpm' (patches from Andrew)
2015-04-15 16:39:15 -07:00
f2fs
make new_sync_{read,write}() static
2015-04-11 22:29:40 -04:00
fat
fs/fat: comment fix, fat_bits can be also 32
2015-04-17 09:04:06 -04:00
freevxfs
…
fscache
fs/fscache/object-list.c: use __seq_open_private()
2014-10-13 17:52:21 +01:00
fuse
fuse: use iov_iter_get_pages() for non-splice path
2015-04-11 22:29:41 -04:00
gfs2
Merge branch 'for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2015-04-15 13:22:56 -07:00
hfs
hfs: incorrect return values
2015-04-17 09:04:04 -04:00
hfsplus
hfsplus: don't store special "osx" xattr prefix on-disk
2015-04-17 09:04:05 -04:00
hostfs
Merge tag 'for-linus-4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml
2015-04-15 13:49:27 -07:00
hpfs
make new_sync_{read,write}() static
2015-04-11 22:29:40 -04:00
hppfs
VFS: (Scripted) Convert S_ISLNK/DIR/REG(dentry->d_inode) to d_is_*(dentry)
2015-02-22 11:38:41 -05:00
hugetlbfs
Merge branch 'akpm' (patches from Andrew)
2015-04-15 16:39:15 -07:00
isofs
isofs: Fix bug in the way to check if the year is a leap year
2015-01-07 09:51:49 +01:00
jbd
jbd: Deletion of an unnecessary check before the function call "iput"
2014-11-18 10:15:29 +01:00
jbd2
jbd2: complain about descriptor block checksum errors
2015-01-19 15:59:58 -05:00
jffs2
Merge branch 'for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2015-04-15 13:22:56 -07:00
jfs
Merge branch 'akpm' (patches from Andrew)
2015-04-15 16:39:15 -07:00
kernfs
kernfs: handle poll correctly on 'direct_read' files.
2015-03-16 21:51:20 +01:00
lockd
Merge branch 'for-3.20' of git://linux-nfs.org/~bfields/linux
2015-02-12 10:39:41 -08:00
logfs
make new_sync_{read,write}() static
2015-04-11 22:29:40 -04:00
minix
make new_sync_{read,write}() static
2015-04-11 22:29:40 -04:00
ncpfs
make new_sync_{read,write}() static
2015-04-11 22:29:40 -04:00
nfs
Merge branch 'akpm' (patches from Andrew)
2015-04-15 16:39:15 -07:00
nfs_common
…
nfsd
Merge branch 'akpm' (patches from Andrew)
2015-04-15 16:39:15 -07:00
nilfs2
nilfs2: use inode_set_flags() in nilfs_set_inode_flags()
2015-04-17 09:04:04 -04:00
nls
…
notify
fanotify: fix event filtering with FAN_ONDIR set
2015-03-12 18:46:08 -07:00
ntfs
make new_sync_{read,write}() static
2015-04-11 22:29:40 -04:00
ocfs2
Merge branch 'for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2015-04-15 13:22:56 -07:00
omfs
make new_sync_{read,write}() static
2015-04-11 22:29:40 -04:00
openpromfs
…
overlayfs
ovl: upper fs should not be R/O
2015-03-18 10:29:48 +01:00
proc
proc: remove use of seq_printf return value
2015-04-15 16:35:25 -07:00
pstore
pstore: Fix the ramoops module parameters update
2015-03-16 11:14:10 -07:00
qnx4
…
qnx6
…
quota
Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
2015-02-10 15:52:38 -08:00
ramfs
make new_sync_{read,write}() static
2015-04-11 22:29:40 -04:00
reiserfs
make new_sync_{read,write}() static
2015-04-11 22:29:40 -04:00
romfs
make new_sync_{read,write}() static
2015-04-11 22:29:40 -04:00
squashfs
Squashfs: Add LZ4 compression configuration option
2014-11-27 18:48:44 +00:00
sysfs
sysfs: Only accept read/write permissions for file attributes
2015-03-25 13:27:57 +01:00
sysv
make new_sync_{read,write}() static
2015-04-11 22:29:40 -04:00
tracefs
tracing: Have mkdir and rmdir be part of tracefs
2015-02-03 12:48:43 -05:00
ubifs
This pull request includes the following UBI/UBIFS changes:
2015-04-15 13:43:40 -07:00
udf
make new_sync_{read,write}() static
2015-04-11 22:29:40 -04:00
ufs
make new_sync_{read,write}() static
2015-04-11 22:29:40 -04:00
xfs
make new_sync_{read,write}() static
2015-04-11 22:29:40 -04:00
aio.c
Merge branch 'for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2015-04-15 13:22:56 -07:00
anon_inodes.c
…
attr.c
…
bad_inode.c
don't bother with most of the bad_file_ops methods
2015-02-20 04:03:58 -05:00
binfmt_aout.c
assorted conversions to %p[dD]
2014-11-19 13:01:20 -05:00
binfmt_elf_fdpic.c
handle suicide on late failure exits in execve() in search_binary_handler()
2014-10-09 02:39:00 -04:00
binfmt_elf.c
mm: fold arch_randomize_brk into ARCH_HAS_ELF_RANDOMIZE
2015-04-14 16:49:05 -07:00
binfmt_em86.c
syscalls: implement execveat() system call
2014-12-13 12:42:51 -08:00
binfmt_flat.c
…
binfmt_misc.c
fs/binfmt_misc.c: simplify entry_status()
2015-04-17 09:03:59 -04:00
binfmt_script.c
syscalls: implement execveat() system call
2014-12-13 12:42:51 -08:00
block_dev.c
make new_sync_{read,write}() static
2015-04-11 22:29:40 -04:00
buffer.c
page_writeback: clean up mess around cancel_dirty_page()
2015-04-14 16:49:01 -07:00
char_dev.c
fs: introduce f_op->mmap_capabilities for nommu mmap support
2015-01-20 14:02:58 -07:00
compat_binfmt_elf.c
…
compat_ioctl.c
Bluetooth: bnep: Add support for get bnep features via ioctl
2015-04-03 23:21:34 +02:00
compat.c
vfs: make first argument of dir_context.actor typed
2014-10-31 17:48:54 -04:00
coredump.c
coredump: accept any write method
2015-04-11 22:29:39 -04:00
dax.c
dax: use pfn_mkwrite to update c/mtime + freeze protection
2015-04-15 16:35:20 -07:00
dcache.c
dcache: return -ESTALE not -EBUSY on distributed fs race
2015-04-11 22:24:33 -04:00
dcookies.c
…
direct-io.c
fs: move struct kiocb to fs.h
2015-03-25 20:28:11 -04:00
drop_caches.c
vmscan: per memory cgroup slab shrinkers
2015-02-12 18:54:09 -08:00
eventfd.c
eventfd: don't take the spinlock in eventfd_poll
2015-02-17 14:34:52 -08:00
eventpoll.c
epoll: optimize setting task running after blocking
2015-02-13 21:21:40 -08:00
exec.c
fs/exec.c:de_thread: move notify_count write under lock
2015-04-17 09:04:07 -04:00
fcntl.c
vfs: renumber FMODE_NONOTIFY and add to uniqueness check
2015-01-08 15:10:52 -08:00
fhandle.c
…
file_table.c
->aio_read and ->aio_write removed
2015-04-11 22:29:43 -04:00
file.c
mm: rcu-protected get_mm_exe_file()
2015-04-17 09:04:07 -04:00
filesystems.c
…
fs_pin.c
switch the IO-triggering parts of umount to fs_pin
2015-01-25 23:17:29 -05:00
fs_struct.c
…
fs-writeback.c
fs: add dirtytime_expire_seconds sysctl
2015-03-17 12:23:32 -04:00
inode.c
Merge branch 'lazytime' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2015-02-17 16:12:34 -08:00
internal.h
trylock_super(): replacement for grab_super_passive()
2015-02-22 11:38:42 -05:00
ioctl.c
fsioctl.c: make generic_block_fiemap() signal-tolerant
2015-02-10 14:30:30 -08:00
Kconfig
dax: does not work correctly with virtual aliasing caches
2015-02-16 17:56:04 -08:00
Kconfig.binfmt
mm: split ET_DYN ASLR from mmap ASLR
2015-04-14 16:49:05 -07:00
libfs.c
VFS: (Scripted) Convert S_ISLNK/DIR/REG(dentry->d_inode) to d_is_*(dentry)
2015-02-22 11:38:41 -05:00
locks.c
locks: use cmpxchg to assign i_flctx pointer
2015-04-03 09:04:04 -04:00
Makefile
This adds the new tracefs file system. This has been in linux-next for
2015-04-14 10:22:29 -07:00
mbcache.c
…
mount.h
switch the IO-triggering parts of umount to fs_pin
2015-01-25 23:17:29 -05:00
mpage.c
vfs: guard end of device for mpage interface
2014-10-09 22:25:53 -04:00
namei.c
remove incorrect comment in lookup_one_len()
2015-04-11 22:24:30 -04:00
namespace.c
VFS: (Scripted) Convert S_ISLNK/DIR/REG(dentry->d_inode) to d_is_*(dentry)
2015-02-22 11:38:41 -05:00
no-block.c
…
nsfs.c
take the targets of /proc/*/ns/* symlinks to separate fs
2014-12-10 21:30:20 -05:00
open.c
->aio_read and ->aio_write removed
2015-04-11 22:29:43 -04:00
pipe.c
make new_sync_{read,write}() static
2015-04-11 22:29:40 -04:00
pnode.c
mnt: Move the clear of MNT_LOCKED from copy_tree to it's callers.
2014-12-02 10:46:50 -06:00
pnode.h
…
posix_acl.c
VFS: (Scripted) Convert S_ISLNK/DIR/REG(dentry->d_inode) to d_is_*(dentry)
2015-02-22 11:38:41 -05:00
proc_namespace.c
vfs: add support for a lazytime mount option
2015-02-05 02:45:00 -05:00
read_write.c
->aio_read and ->aio_write removed
2015-04-11 22:29:43 -04:00
readdir.c
vfs: make first argument of dir_context.actor typed
2014-10-31 17:48:54 -04:00
select.c
all arches, signal: move restart_block to struct task_struct
2015-02-12 18:54:12 -08:00
seq_file.c
bitmap, cpumask, nodemask: remove dedicated formatting functions
2015-02-13 21:21:39 -08:00
signalfd.c
fs: Convert show_fdinfo functions to void
2014-11-05 14:13:23 -05:00
splice.c
dax: unify ext2/4_{dax,}_file_operations
2015-04-15 16:35:20 -07:00
stack.c
…
stat.c
switch security_inode_getattr() to struct path *
2015-04-11 22:24:32 -04:00
statfs.c
…
super.c
cleancache: remove limit on the number of cleancache enabled filesystems
2015-04-14 16:49:03 -07:00
sync.c
vfs: add support for a lazytime mount option
2015-02-05 02:45:00 -05:00
timerfd.c
fs: Convert show_fdinfo functions to void
2014-11-05 14:13:23 -05:00
utimes.c
…
xattr.c
new helper: audit_file()
2014-11-19 13:01:26 -05:00