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Konstantin Khlebnikov 4fe7efdbdf mm: correctly synchronize rss-counters at exit/exec 
do_exit() and exec_mmap() call sync_mm_rss() before mm_release() does
put_user(clear_child_tid) which can update task->rss_stat and thus make
mm->rss_stat inconsistent.  This triggers the "BUG:" printk in check_mm().

Let's fix this bug in the safest way, and optimize/cleanup this later.

Reported-by: Markus Trippelsdorf <markus@trippelsdorf.de>
Signed-off-by: Konstantin Khlebnikov <khlebnikov@openvz.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-06-20 14:39:36 -07:00
..
9p
kill v9fs_dentry_from_dir_inode()
2012-05-29 23:28:34 -04:00
adfs
switch open-coded instances of d_make_root() to new helper
2012-03-20 21:29:35 -04:00
affs
affs: bury unused macros
2012-05-29 23:28:34 -04:00
afs
vfs: Rename end_writeback() to clear_inode()
2012-05-06 13:43:41 +08:00
autofs4
avoid iput() from flusher thread
2012-05-28 09:54:45 -07:00
befs
switch open-coded instances of d_make_root() to new helper
2012-03-20 21:29:35 -04:00
bfs
vfs: Rename end_writeback() to clear_inode()
2012-05-06 13:43:41 +08:00
btrfs
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs
2012-06-16 17:01:41 -07:00
cachefiles
switch touch_atime to struct path
2012-03-20 21:29:41 -04:00
ceph
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2012-06-01 10:34:35 -07:00
cifs
CIFS: Move get_next_mid to ops struct
2012-06-01 12:35:19 -05:00
coda
vfs: Rename end_writeback() to clear_inode()
2012-05-06 13:43:41 +08:00
configfs
make configfs_pin_fs() return root dentry on success
2012-03-20 21:29:48 -04:00
cramfs
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2012-03-21 13:36:41 -07:00
debugfs
debugfs: Add support to print u32 array in debugfs
2012-04-17 00:18:36 -04:00
devpts
userns: Convert devpts to use kuid/kgid where appropriate
2012-05-15 14:59:26 -07:00
dlm
dlm: NULL dereference on failure in kmem_cache_create()
2012-05-15 10:39:28 -05:00
ecryptfs
get rid of pointless allocations and copying in ecryptfs_follow_link()
2012-05-29 23:28:40 -04:00
efs
switch open-coded instances of d_make_root() to new helper
2012-03-20 21:29:35 -04:00
exofs
exofs: fix sparse non-ANSI function warning
2012-06-12 06:33:22 +03:00
exportfs
->encode_fh() API change
2012-05-29 23:28:33 -04:00
ext2
avoid iput() from flusher thread
2012-05-28 09:54:45 -07:00
ext3
avoid iput() from flusher thread
2012-05-28 09:54:45 -07:00
ext4
ext4: don't set i_flags in EXT4_IOC_SETFLAGS
2012-06-07 19:04:19 -04:00
fat
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2012-06-01 10:34:35 -07:00
freevxfs
vfs: Rename end_writeback() to clear_inode()
2012-05-06 13:43:41 +08:00
fscache
…
fuse
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse
2012-06-05 10:11:11 -07:00
gfs2
->encode_fh() API change
2012-05-29 23:28:33 -04:00
hfs
vfs: Rename end_writeback() to clear_inode()
2012-05-06 13:43:41 +08:00
hfsplus
avoid iput() from flusher thread
2012-05-28 09:54:45 -07:00
hostfs
vfs: Rename end_writeback() to clear_inode()
2012-05-06 13:43:41 +08:00
hpfs
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2012-06-01 10:34:35 -07:00
hppfs
vfs: Rename end_writeback() to clear_inode()
2012-05-06 13:43:41 +08:00
hugetlbfs
avoid iput() from flusher thread
2012-05-28 09:54:45 -07:00
isofs
->encode_fh() API change
2012-05-29 23:28:33 -04:00
jbd
jbd: Write journal superblock with WRITE_FUA after checkpointing
2012-05-15 23:34:37 +02:00
jbd2
jbd2: use kmem_cache_zalloc wrapper instead of flag
2012-06-01 00:10:32 -04:00
jffs2
- More robust parsing especially of xattr data in JFFS2
2012-06-01 16:55:42 -07:00
jfs
vfs: Rename end_writeback() to clear_inode()
2012-05-06 13:43:41 +08:00
lockd
Merge branch 'for-3.5' of git://linux-nfs.org/~bfields/linux
2012-06-01 08:32:58 -07:00
logfs
vfs: Rename end_writeback() to clear_inode()
2012-05-06 13:43:41 +08:00
minix
vfs: Rename end_writeback() to clear_inode()
2012-05-06 13:43:41 +08:00
ncpfs
fs: introduce inode operation ->update_time
2012-06-01 12:07:25 -04:00
nfs
NFS client bugfixes for Linux 3.5
2012-06-15 17:37:23 -07:00
nfs_common
…
nfsd
nfsd4: BUG_ON(!is_spin_locked()) no good on UP kernels
2012-06-14 13:54:08 -04:00
nilfs2
nilfs2: ensure proper cache clearing for gc-inodes
2012-06-20 14:39:35 -07:00
nls
nls: fix (and rename) mac NLS table files and config options
2012-06-01 19:51:22 -07:00
notify
fsnotify: remove unused parameter from send_to_group()
2012-05-30 21:04:53 -04:00
ntfs
fs: introduce inode operation ->update_time
2012-06-01 12:07:25 -04:00
ocfs2
ocfs: simplify symlink handling
2012-05-29 23:28:40 -04:00
omfs
vfs: Rename end_writeback() to clear_inode()
2012-05-06 13:43:41 +08:00
openpromfs
switch open-coded instances of d_make_root() to new helper
2012-03-20 21:29:35 -04:00
proc
vfs: Fix /proc/<tid>/fdinfo/<fd> file handling
2012-06-04 11:00:45 -07:00
pstore
avoid iput() from flusher thread
2012-05-28 09:54:45 -07:00
qnx4
qnx4: new helper - try_extent()
2012-03-20 21:29:52 -04:00
qnx6
fs: initial qnx6fs addition
2012-03-20 21:29:38 -04:00
quota
quota: Get rid of nested I_MUTEX_QUOTA locking subclass
2012-05-15 23:34:39 +02:00
ramfs
tidy up after d_make_root() conversion
2012-03-20 21:29:37 -04:00
reiserfs
reiserfs: get rid of resierfs_sync_super
2012-06-01 10:37:36 -04:00
romfs
MTD merge for 3.4
2012-03-30 17:31:56 -07:00
squashfs
Add an extra mount time sanity check, plus some code cleanups and bug fixes.
2012-03-28 18:05:54 -07:00
sysfs
avoid iput() from flusher thread
2012-05-28 09:54:45 -07:00
sysv
vfs: Rename end_writeback() to clear_inode()
2012-05-06 13:43:41 +08:00
ubifs
UBIFS: fix debugfs-less systems support
2012-06-07 10:43:54 +03:00
udf
->encode_fh() API change
2012-05-29 23:28:33 -04:00
ufs
avoid iput() from flusher thread
2012-05-28 09:54:45 -07:00
xfs
fs: introduce inode operation ->update_time
2012-06-01 12:07:25 -04:00
aio.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2012-06-01 10:34:35 -07:00
anon_inodes.c
anon_inodes: move allocation of anon_inode into ->mount()
2012-03-20 21:29:45 -04:00
attr.c
vfs: increment iversion when a file is truncated
2012-05-30 21:04:53 -04:00
bad_inode.c
mm/fs: remove truncate_range
2012-05-29 16:22:23 -07:00
binfmt_aout.c
VM: add "vm_mmap()" helper function
2012-04-20 17:29:13 -07:00
binfmt_elf_fdpic.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
2012-05-23 17:42:39 -07:00
binfmt_elf.c
binfmt_elf: switch elf_map() to vm_mmap/vm_munmap
2012-05-30 21:04:55 -04:00
binfmt_em86.c
__register_binfmt() made void
2012-03-20 21:29:46 -04:00
binfmt_flat.c
binfmt_flat: use vm_munmap, we are missing ->mmap_sem there
2012-05-30 21:04:56 -04:00
binfmt_misc.c
vfs: Rename end_writeback() to clear_inode()
2012-05-06 13:43:41 +08:00
binfmt_script.c
__register_binfmt() made void
2012-03-20 21:29:46 -04:00
binfmt_som.c
VM: add "vm_mmap()" helper function
2012-04-20 17:29:13 -07:00
bio-integrity.c
fs: remove the second argument of k[un]map_atomic()
2012-03-20 21:48:21 +08:00
bio.c
Merge branch 'for-3.5/core' of git://git.kernel.dk/linux-block
2012-05-30 08:52:42 -07:00
block_dev.c
avoid iput() from flusher thread
2012-05-28 09:54:45 -07:00
buffer.c
fs: Move bh_cachep to the __read_mostly section
2012-05-30 21:04:52 -04:00
char_dev.c
…
compat_binfmt_elf.c
…
compat_ioctl.c
The following text was taken from the original review request:
2012-03-24 10:24:31 -07:00
compat.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal
2012-06-01 11:53:44 -07:00
dcache.c
Revert "vfs: stop d_splice_alias creating directory aliases"
2012-06-08 10:34:03 -07:00
dcookies.c
fs: reduce the use of module.h wherever possible
2012-02-28 19:31:58 -05:00
direct-io.c
NFS: Ensure that setattr and getattr wait for O_DIRECT write completion
2012-05-31 11:41:36 -07:00
drop_caches.c
…
eventfd.c
eventfd: change int to __u64 in eventfd_signal()
2012-05-31 17:49:32 -07:00
eventpoll.c
HAVE_RESTORE_SIGMASK is defined on all architectures now
2012-06-01 12:58:46 -04:00
exec.c
mm: correctly synchronize rss-counters at exit/exec
2012-06-20 14:39:36 -07:00
fcntl.c
switch fcntl to fget_raw_light/fput_light
2012-05-29 23:28:30 -04:00
fhandle.c
…
fifo.c
…
file_table.c
brlocks/lglocks: API cleanups
2012-05-29 23:28:41 -04:00
file.c
Merge branch 'x86-x32-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2012-03-29 18:12:23 -07:00
filesystems.c
…
fs_struct.c
The following text was taken from the original review request:
2012-03-24 10:24:31 -07:00
fs-writeback.c
writeback: Fix lock imbalance in writeback_sb_inodes()
2012-06-09 08:32:15 +09:00
generic_acl.c
…
inode.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2012-06-01 10:34:35 -07:00
internal.h
vfs: split __dentry_open()
2012-06-01 12:12:00 -04:00
ioctl.c
fs: reduce the use of module.h wherever possible
2012-02-28 19:31:58 -05:00
ioprio.c
Merge branch 'for-3.5/core' of git://git.kernel.dk/linux-block
2012-05-30 08:52:42 -07:00
Kconfig
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2012-03-21 13:36:41 -07:00
Kconfig.binfmt
C6X: add support to build with BINFMT_ELF_FDPIC
2012-05-15 09:17:34 -04:00
libfs.c
vfs: make it possible to access the dentry hash/len as one 64-bit entry
2012-05-10 19:54:35 -07:00
locks.c
switch flock to fget_light/fput_light
2012-05-29 23:28:31 -04:00
Makefile
fs: initial qnx6fs addition
2012-03-20 21:29:38 -04:00
mbcache.c
…
mount.h
…
mpage.c
fs: reduce the use of module.h wherever possible
2012-02-28 19:31:58 -05:00
namei.c
vfs: retry last component if opening stale dentry
2012-06-01 12:12:01 -04:00
namespace.c
vfs: umount_tree() might be called on subtree that had never made it
2012-05-30 21:04:55 -04:00
no-block.c
…
open.c
vfs: nameidata_to_filp(): don't throw away file on error
2012-06-01 12:12:01 -04:00
pipe.c
fs: introduce inode operation ->update_time
2012-06-01 12:07:25 -04:00
pnode.c
brlocks/lglocks: API cleanups
2012-05-29 23:28:41 -04:00
pnode.h
…
posix_acl.c
fs: reduce the use of module.h wherever possible
2012-02-28 19:31:58 -05:00
proc_namespace.c
brlocks/lglocks: API cleanups
2012-05-29 23:28:41 -04:00
read_write.c
aio/vfs: cleanup of rw_copy_check_uvector() and compat_rw_copy_check_uvector()
2012-05-31 17:49:32 -07:00
read_write.h
…
readdir.c
switch readdir/getdents to fget_light/fput_light
2012-05-29 23:28:29 -04:00
select.c
HAVE_RESTORE_SIGMASK is defined on all architectures now
2012-06-01 12:58:46 -04:00
seq_file.c
The following text was taken from the original review request:
2012-03-24 10:24:31 -07:00
signalfd.c
switch signalfd4() to fget_light/fput_light
2012-05-29 23:28:30 -04:00
splice.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2012-06-01 10:34:35 -07:00
stack.c
fs: reduce the use of module.h wherever possible
2012-02-28 19:31:58 -05:00
stat.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
2012-05-23 17:42:39 -07:00
statfs.c
switch statfs to fget_light/fput_light
2012-05-29 23:28:31 -04:00
super.c
The following text was taken from the original review request:
2012-03-24 10:24:31 -07:00
sync.c
switch do_fsync() to fget_light()
2012-05-29 23:28:29 -04:00
timerfd.c
…
utimes.c
switch utimes() to fget_light/fput_light
2012-05-29 23:28:32 -04:00
xattr_acl.c
fs: reduce the use of module.h wherever possible
2012-02-28 19:31:58 -05:00
xattr.c
switch xattr syscalls to fget_light/fput_light
2012-05-29 23:28:30 -04:00