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linux/fs/ext4
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Jan Kara 74dae42785 ext4: fix crashes in dioread_nolock mode 
Competing overwrite DIO in dioread_nolock mode will just overwrite
pointer to io_end in the inode. This may result in data corruption or
extent conversion happening from IO completion interrupt because we
don't properly set buffer_defer_completion() when unlocked DIO races
with locked DIO to unwritten extent.

Since unlocked DIO doesn't need io_end for anything, just avoid
allocating it and corrupting pointer from inode for locked DIO.
A cleaner fix would be to avoid these games with io_end pointer from the
inode but that requires more intrusive changes so we leave that for
later.

Cc: stable@vger.kernel.org
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
2016-02-19 00:33:21 -05:00
..
acl.c ext4: remove unused header files 2015-04-02 23:47:42 -04:00
acl.h ext2/3/4: use generic posix ACL infrastructure 2014-01-25 23:58:19 -05:00
balloc.c ext4: fix scheduling in atomic on group checksum failure 2016-02-11 23:15:12 -05:00
bitmap.c ext4: remove unused header files 2015-04-02 23:47:42 -04:00
block_validity.c ext4: call out CRC and corruption errors with specific error codes 2015-10-17 16:16:04 -04:00
crypto_fname.c ext4 crypto: replace some BUG_ON()'s with error checks 2015-10-03 10:49:27 -04:00
crypto_key.c ext4 crypto: add missing locking for keyring_key access 2015-12-10 00:57:58 -05:00
crypto_policy.c ext4 crypto: replace some BUG_ON()'s with error checks 2015-10-03 10:49:27 -04:00
crypto.c ext4 crypto: revalidate dentry after adding or removing the key 2016-02-07 19:35:05 -05:00
dir.c ext4: fix memleak in ext4_readdir() 2016-02-16 00:20:19 -05:00
ext4_crypto.h ext4 crypto: allocate bounce pages using GFP_NOWAIT 2015-06-03 09:32:39 -04:00
ext4_extents.h ext4: teach ext4_ext_find_extent() to realloc path if necessary 2014-09-01 14:40:09 -04:00
ext4_jbd2.c ext4: fix potential use after free in __ext4_journal_stop 2015-10-17 22:57:06 -04:00
ext4_jbd2.h ext4: clean up feature test macros with predicate functions 2015-10-17 16:18:43 -04:00
ext4.h ext4 crypto: revalidate dentry after adding or removing the key 2016-02-07 19:35:05 -05:00
extents_status.c ext4: move procfs registration code to fs/ext4/sysfs.c 2015-09-23 12:46:17 -04:00
extents_status.h ext4: move procfs registration code to fs/ext4/sysfs.c 2015-09-23 12:46:17 -04:00
extents.c ext4: remove unused parameter "newblock" in convert_initialized_extent() 2016-02-12 01:23:00 -05:00
file.c ext4 crypto: move context consistency check to ext4_file_open() 2016-02-08 00:54:26 -05:00
fsync.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2015-04-26 17:22:07 -07:00
hash.c ext4: remove unused header files 2015-04-02 23:47:42 -04:00
ialloc.c ext4: fix scheduling in atomic on group checksum failure 2016-02-11 23:15:12 -05:00
indirect.c ext4: clean up feature test macros with predicate functions 2015-10-17 16:18:43 -04:00
inline.c ext4 crypto: simplify interfaces to directory entry insert functions 2016-01-08 16:00:31 -05:00
inode.c ext4: fix crashes in dioread_nolock mode 2016-02-19 00:33:21 -05:00
ioctl.c ext4: ioctl: fix erroneous return value 2016-02-11 23:57:21 -05:00
Kconfig ext4: Update EXT4_USE_FOR_EXT2 description 2015-09-24 13:27:47 +02:00
Makefile ext4: move sysfs code from super.c to fs/ext4/sysfs.c 2015-09-23 12:44:17 -04:00
mballoc.c ext4: add a line break for proc mb_groups display 2016-02-12 00:17:16 -05:00
mballoc.h ext4: remove unused ac_ex_scanned 2014-02-20 13:32:10 -05:00
migrate.c ext4: clean up feature test macros with predicate functions 2015-10-17 16:18:43 -04:00
mmp.c ext4: call out CRC and corruption errors with specific error codes 2015-10-17 16:16:04 -04:00
move_extent.c ext4: don't read blocks from disk after extents being swapped 2016-02-12 01:20:43 -05:00
namei.c ext4 crypto: move context consistency check to ext4_file_open() 2016-02-08 00:54:26 -05:00
page-io.c fs: use block_device name vsprintf helper 2016-01-06 13:03:18 -05:00
readpage.c Merge branch 'akpm' (patches from Andrew) 2015-11-07 14:32:45 -08:00
resize.c ext4: fix potential integer overflow 2016-02-12 01:15:59 -05:00
super.c wrappers for ->i_mutex access 2016-01-22 18:04:28 -05:00
symlink.c Merge branch 'work.symlinks' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2016-01-11 13:13:23 -08:00
sysfs.c ext4: add "static" to ext4_seq_##name##_fops struct 2015-11-26 15:52:24 -05:00
truncate.h ext4: fix races between page faults and hole punching 2015-12-07 14:28:03 -05:00
xattr_security.c xattr handlers: Simplify list operation 2015-12-13 19:46:12 -05:00
xattr_trusted.c xattr handlers: Simplify list operation 2015-12-13 19:46:12 -05:00
xattr_user.c xattr handlers: Simplify list operation 2015-12-13 19:46:12 -05:00
xattr.c Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2016-01-12 17:11:47 -08:00
xattr.h ext4 crypto: add encryption xattr support 2015-04-11 07:47:00 -04:00