AcoSail/kernel_optimize_test
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kernel_optimize_test/fs
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Oleg Nesterov 704b836cbf mm_for_maps: take ->cred_guard_mutex to fix the race with exec 
The problem is minor, but without ->cred_guard_mutex held we can race
with exec() and get the new ->mm but check old creds.

Now we do not need to re-check task->mm after ptrace_may_access(), it
can't be changed to the new mm under us.

Strictly speaking, this also fixes another very minor problem. Unless
security check fails or the task exits mm_for_maps() should never
return NULL, the caller should get either old or new ->mm.

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: Serge Hallyn <serue@us.ibm.com>
Signed-off-by: James Morris <jmorris@namei.org>
2009-08-10 20:49:26 +10:00
..
9p 9p: Fix incorrect parameters to v9fs_file_readn. 2009-07-14 15:54:42 -05:00
adfs headers: smp_lock.h redux 2009-07-12 12:22:34 -07:00
affs affs: add ->sync_fs 2009-06-11 21:36:14 -04:00
afs AFS: Fix compilation warning 2009-07-12 12:24:07 -07:00
autofs switch follow_down() 2009-06-11 21:36:01 -04:00
autofs4 headers: smp_lock.h redux 2009-07-12 12:22:34 -07:00
befs Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6 2009-06-17 08:46:57 -07:00
bfs headers: smp_lock.h redux 2009-07-12 12:22:34 -07:00
btrfs Merge git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable 2009-08-07 19:03:09 -07:00
cachefiles enforce ->sync_fs is only called for rw superblock 2009-06-11 21:36:06 -04:00
cifs [CIFS] Update readme to reflect forceuid mount parms 2009-08-04 03:53:28 +00:00
coda splice: implement default splice_read method 2009-05-11 14:13:10 +02:00
configfs configfs: Rework configfs_depend_item() locking and make lockdep happy 2009-04-30 10:48:26 -07:00
cramfs
debugfs debugfs: use specified mode to possibly mark files read/write only 2009-06-15 21:30:28 -07:00
devpts devpts: remove module-related code 2009-06-24 08:15:24 -04:00
dlm dlm: free socket in error exit path 2009-07-14 12:28:43 -05:00
ecryptfs eCryptfs: parse_tag_3_packet check tag 3 packet encrypted key size 2009-07-28 14:26:06 -07:00
efs get rid of BKL in fs/efs 2009-06-17 00:36:36 -04:00
exofs headers: smp_lock.h redux 2009-07-12 12:22:34 -07:00
exportfs
ext2 headers: smp_lock.h redux 2009-07-12 12:22:34 -07:00
ext3 ext3: Get rid of extenddisksize parameter of ext3_get_blocks_handle() 2009-07-15 21:30:46 +02:00
ext4 Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4 2009-07-13 16:39:25 -07:00
fat headers: smp_lock.h redux 2009-07-12 12:22:34 -07:00
freevxfs headers: smp_lock.h redux 2009-07-12 12:22:34 -07:00
fscache FS-Cache: Fixup renamed filenames in comments in internal.h 2009-05-27 10:20:13 -07:00
fuse Revert "fuse: Fix build error" as unnecessary 2009-07-11 11:22:34 -07:00
gfs2 GFS2: remove dcache entries for remote deleted inodes 2009-07-30 11:01:03 +01:00
hfs headers: smp_lock.h redux 2009-07-12 12:22:34 -07:00
hfsplus headers: smp_lock.h redux 2009-07-12 12:22:34 -07:00
hostfs hostfs: set maximum filesize in superblock for proper LFS support 2009-06-30 18:56:03 -07:00
hpfs headers: smp_lock.h redux 2009-07-12 12:22:34 -07:00
hppfs
hugetlbfs Merge branch 'master' into next 2009-05-22 18:40:59 +10:00
isofs isofs: fix Joliet regression 2009-07-10 19:18:59 -07:00
jbd jbd: fix race between write_metadata_buffer and get_write_access 2009-07-21 11:54:42 +02:00
jbd2 jbd2: fix race between write_metadata_buffer and get_write_access 2009-07-13 17:55:35 -04:00
jffs2 jffs2: Fix return value from jffs2_do_readpage_nolock() 2009-08-04 12:13:06 +01:00
jfs jfs: Fix early release of acl in jfs_get_acl 2009-07-23 11:08:36 -05:00
lockd headers: smp_lock.h redux 2009-07-12 12:22:34 -07:00
minix Making fs/minix/minix.h double including safe 2009-06-22 11:34:42 -07:00
ncpfs NLS: update handling of Unicode 2009-06-15 21:44:43 -07:00
nfs NFSv4: Fix a problem whereby a buggy server can oops the kernel 2009-07-21 19:22:38 -04:00
nfs_common
nfsd headers: smp_lock.h redux 2009-07-12 12:22:34 -07:00
nilfs2 nilfs2: fix missing unlock in error path of nilfs_mdt_write_page 2009-08-02 22:24:15 +09:00
nls NLS: update handling of Unicode 2009-06-15 21:44:43 -07:00
notify inotify: use GFP_NOFS under potential memory pressure 2009-07-21 15:26:27 -04:00
ntfs ntfs: use is_power_of_2() function for clarity. 2009-06-16 19:47:48 -07:00
ocfs2 headers: smp_lock.h redux 2009-07-12 12:22:34 -07:00
omfs switch omfs to simple_fsync() 2009-06-11 21:36:13 -04:00
openpromfs
partitions partitions: fix broken uevent_suppress conversion 2009-07-12 13:02:09 -07:00
proc mm_for_maps: take ->cred_guard_mutex to fix the race with exec 2009-08-10 20:49:26 +10:00
qnx4 fs/qnx4: sanitize includes 2009-06-11 21:36:12 -04:00
quota quota: Silence lockdep on quota_on 2009-07-30 17:31:23 +02:00
ramfs fs/ramfs/file-nommu.c needs include/linux/sched.h 2009-07-29 19:10:36 -07:00
reiserfs headers: smp_lock.h redux 2009-07-12 12:22:34 -07:00
romfs ROMFS: romfs_dev_read() error ignored 2009-05-09 10:49:41 -04:00
smbfs push BKL down into ->put_super 2009-06-11 21:36:07 -04:00
squashfs headers: smp_lock.h redux 2009-07-12 12:22:34 -07:00
sysfs sysfs: fix hardlink count on device_move 2009-07-28 13:45:21 -07:00
sysv get rid of BKL in fs/sysv 2009-06-17 00:36:37 -04:00
ubifs headers: smp_lock.h redux 2009-07-12 12:22:34 -07:00
udf udf: Fix loading of VAT inode when drive wrongly reports number of recorded blocks 2009-07-30 17:28:26 +02:00
ufs ufs: sector_t cannot be negative 2009-06-18 13:03:46 -07:00
xfs xfs: fix freeing of inodes not yet added to the inode cache 2009-08-07 14:38:34 -03:00
aio.c eventfd: revised interface and cleanups 2009-06-30 18:55:58 -07:00
anon_inodes.c fs: Provide empty .set_page_dirty() aop for anon inodes 2009-06-18 14:46:10 +02:00
attr.c
bad_inode.c
binfmt_aout.c
binfmt_elf_fdpic.c elf_core_dump: use rcu_read_lock() to access ->real_parent 2009-06-18 13:03:52 -07:00
binfmt_elf.c elf: fix one check-after-use 2009-07-01 11:14:28 -07:00
binfmt_em86.c
binfmt_flat.c flat: fix uninitialized ptr with shared libs 2009-08-07 10:39:57 -07:00
binfmt_misc.c
binfmt_script.c
binfmt_som.c
bio-integrity.c block: Create bip slabs with embedded integrity vectors 2009-07-01 10:56:25 +02:00
bio.c block: fix sg SG_DXFER_TO_FROM_DEV regression 2009-07-10 20:31:53 +02:00
block_dev.c PM / Hibernate: Replace bdget call with simple atomic_inc of i_count 2009-07-29 21:07:55 +02:00
buffer.c Merge branch 'for-2.6.31' of git://git.kernel.dk/linux-2.6-block 2009-06-11 11:10:35 -07:00
char_dev.c headers: smp_lock.h redux 2009-07-12 12:22:34 -07:00
compat_binfmt_elf.c
compat_ioctl.c compat_ioctl: hook up compat handler for FIEMAP ioctl 2009-08-07 10:39:56 -07:00
compat.c headers: smp_lock.h redux 2009-07-12 12:22:34 -07:00
dcache.c dcache: extrace and use d_unlinked() 2009-06-11 21:36:06 -04:00
dcookies.c
direct-io.c block: Do away with the notion of hardsect_size 2009-05-22 23:22:54 +02:00
drop_caches.c mm: remove __invalidate_mapping_pages variant 2009-06-16 19:47:43 -07:00
eventfd.c eventfd: revised interface and cleanups 2009-06-30 18:55:58 -07:00
eventpoll.c epoll: fix nested calls support 2009-06-18 13:03:41 -07:00
exec.c cred_guard_mutex: do not return -EINTR to user-space 2009-07-06 13:57:04 -07:00
fcntl.c headers: smp_lock.h redux 2009-07-12 12:22:34 -07:00
fifo.c
file_table.c fs: move mark_files_ro into file_table.c 2009-06-11 21:36:02 -04:00
file.c
filesystems.c
fs_struct.c
fs-writeback.c cleanup __writeback_single_inode 2009-06-24 08:15:26 -04:00
generic_acl.c
inode.c vfs: add __destroy_inode 2009-08-07 14:38:29 -03:00
internal.h Trim a bit of crap from fs.h 2009-06-11 21:36:07 -04:00
ioctl.c fs: Add new pre-allocation ioctls to vfs for compatibility with legacy xfs ioctls 2009-06-24 08:15:27 -04:00
ioprio.c
Kconfig fs/Kconfig: move nilfs2 out 2009-07-14 12:34:17 +09:00
Kconfig.binfmt
libfs.c New helper - simple_fsync() 2009-06-11 21:36:11 -04:00
locks.c
Makefile
mbcache.c
mpage.c
namei.c integrity: add ima_counts_put (updated) 2009-06-29 08:59:10 +10:00
namespace.c vfs: mnt_want_write_file(): fix special file handling 2009-08-07 10:39:56 -07:00
nfsctl.c
no-block.c
open.c fs: Add new pre-allocation ioctls to vfs for compatibility with legacy xfs ioctls 2009-06-24 08:15:27 -04:00
pipe.c lockdep: Fix lockdep annotation for pipe_double_lock() 2009-07-22 21:14:14 +02:00
pnode.c
pnode.h
posix_acl.c
read_write.c splice: implement default splice_read method 2009-05-11 14:13:10 +02:00
read_write.h
readdir.c
select.c poll: avoid extra wakeups in select/poll 2009-06-16 19:47:48 -07:00
seq_file.c seq_file: add function to write binary data 2009-06-18 13:03:57 -07:00
signalfd.c
splice.c splice: fix kmaps in default_file_splice_write() 2009-05-19 11:37:46 +02:00
stack.c
stat.c
super.c ... and the same for vfsmount id/mount group id 2009-06-24 08:15:26 -04:00
sync.c sys_sync(): fix 16% performance regression in ffsb create_4k test 2009-07-06 13:57:03 -07:00
timerfd.c
utimes.c
xattr_acl.c
xattr.c fs: introduce mnt_clone_write 2009-06-11 21:36:02 -04:00