iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
linux/fs/ext4
History
Eryu Guan 73fdad00b2 ext4: protect i_disksize update by i_data_sem in direct write path 
i_disksize update should be protected by i_data_sem, by either taking
the lock explicitly or by using ext4_update_i_disksize() helper. But the
i_disksize updates in ext4_direct_IO_write() are not protected at all,
which may be racing with i_disksize updates in writeback path in
delalloc buffer write path.

This is found by code inspection, and I didn't hit any i_disksize
corruption due to this bug. Thanks to Jan Kara for catching this bug and
suggesting the fix!

Reported-by: Jan Kara <jack@suse.cz>
Suggested-by: Jan Kara <jack@suse.cz>
Signed-off-by: Eryu Guan <guaneryu@gmail.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@vger.kernel.org
2018-03-22 11:41:25 -04:00
..
acl.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
acl.h
ext4: fix up remaining files with SPDX cleanups
2017-12-17 22:00:59 -05:00
balloc.c
ext4: don't update checksum of new initialized bitmaps
2018-02-19 14:16:47 -05:00
bitmap.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
block_validity.c
ext4: use 'sbi' instead of 'EXT4_SB(sb)'
2018-01-11 13:17:49 -05:00
dir.c
iversion: Rename make inode_cmp_iversion{+raw} to inode_eq_iversion{+raw}
2018-02-01 08:15:25 -05:00
ext4_extents.h
ext4: fix up remaining files with SPDX cleanups
2017-12-17 22:00:59 -05:00
ext4_jbd2.c
ext4: shutdown should not prevent get_write_access
2018-02-18 22:07:36 -05:00
ext4_jbd2.h
ext4: fix up remaining files with SPDX cleanups
2017-12-17 22:00:59 -05:00
ext4.h
ext4: fixed alignment and minor code cleanup in ext4.h
2018-01-07 23:36:19 -05:00
extents_status.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
extents_status.h
ext4: fix up remaining files with SPDX cleanups
2017-12-17 22:00:59 -05:00
extents.c
ext4: fix up remaining files with SPDX cleanups
2017-12-17 22:00:59 -05:00
file.c
ext4: fix ENOSPC handling in DAX page fault handler
2018-01-07 16:41:01 -05:00
fsmap.c
ext4: fix up remaining files with SPDX cleanups
2017-12-17 22:00:59 -05:00
fsmap.h
ext4: fix up remaining files with SPDX cleanups
2017-12-17 22:00:59 -05:00
fsync.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
hash.c
ext4: fix up remaining files with SPDX cleanups
2017-12-17 22:00:59 -05:00
ialloc.c
ext4: don't update checksum of new initialized bitmaps
2018-02-19 14:16:47 -05:00
indirect.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
inline.c
iversion.h related cleanup for v4.16
2018-02-07 14:25:22 -08:00
inode.c
ext4: protect i_disksize update by i_data_sem in direct write path
2018-03-22 11:41:25 -04:00
ioctl.c
ext4: pass -ESHUTDOWN code to jbd2 layer
2018-02-18 23:45:18 -05:00
Kconfig
fs/*/Kconfig: drop links to 404-compliant http://acl.bestbits.at
2018-01-01 12:45:37 -07:00
Makefile
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
mballoc.c
ext4: use 'sbi' instead of 'EXT4_SB(sb)'
2018-01-11 13:17:49 -05:00
mballoc.h
ext4: fix up remaining files with SPDX cleanups
2017-12-17 22:00:59 -05:00
migrate.c
ext4: fix up remaining files with SPDX cleanups
2017-12-17 22:00:59 -05:00
mmp.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
move_extent.c
ext4: fix up remaining files with SPDX cleanups
2017-12-17 22:00:59 -05:00
namei.c
Refactor support for encrypted symlinks to move common code to fscrypt.
2018-02-04 10:43:12 -08:00
page-io.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
readpage.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
resize.c
ext4: use 'sbi' instead of 'EXT4_SB(sb)'
2018-01-11 13:17:49 -05:00
super.c
ext4: add tracepoints for shutdown and file system errors
2018-02-18 20:53:23 -05:00
symlink.c
ext4: switch to fscrypt_get_symlink()
2018-01-11 22:10:40 -05:00
sysfs.c
ext4: create ext4_kset dynamically
2018-01-11 15:34:04 -05:00
truncate.h
ext4: fix up remaining files with SPDX cleanups
2017-12-17 22:00:59 -05:00
xattr_security.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
xattr_trusted.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
xattr_user.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
xattr.c
ext4: convert to new i_version API
2018-01-29 06:42:21 -05:00
xattr.h
ext4: fix up remaining files with SPDX cleanups
2017-12-17 22:00:59 -05:00