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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2019-05-19 20:43:16 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-05-19 20:43:16 +0200 |
| commit | c4d36b63b28b76cd584bec48af7b562b4513b87b (patch) | |
| tree | 7153f399e00d4ab8bf89bd939b5b626cb183d2d9 /fs/ext4/namei.c | |
| parent | Merge tag '5.2-rc-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6 (diff) | |
| parent | ext4: avoid panic during forced reboot due to aborted journal (diff) | |
| download | linux-c4d36b63b28b76cd584bec48af7b562b4513b87b.tar.xz linux-c4d36b63b28b76cd584bec48af7b562b4513b87b.zip | |
Merge tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
Pull ext4 fixes from Ted Ts'o:
"Some bug fixes, and an update to the URL's for the final version of
Unicode 12.1.0"
* tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
ext4: avoid panic during forced reboot due to aborted journal
ext4: fix block validity checks for journal inodes using indirect blocks
unicode: update to Unicode 12.1.0 final
unicode: add missing check for an error return from utf8lookup()
ext4: fix miscellaneous sparse warnings
ext4: unsigned int compared against zero
ext4: fix use-after-free in dx_release()
ext4: fix data corruption caused by overlapping unaligned and aligned IO
jbd2: fix potential double free
ext4: zero out the unused memory region in the extent tree block
Diffstat (limited to 'fs/ext4/namei.c')
| -rw-r--r-- | fs/ext4/namei.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c index 6d50f53b7a15..cd01c4a67ffb 100644 --- a/fs/ext4/namei.c +++ b/fs/ext4/namei.c @@ -872,12 +872,15 @@ static void dx_release(struct dx_frame *frames) { struct dx_root_info *info; int i; + unsigned int indirect_levels; if (frames[0].bh == NULL) return; info = &((struct dx_root *)frames[0].bh->b_data)->info; - for (i = 0; i <= info->indirect_levels; i++) { + /* save local copy, "info" may be freed after brelse() */ + indirect_levels = info->indirect_levels; + for (i = 0; i <= indirect_levels; i++) { if (frames[i].bh == NULL) break; brelse(frames[i].bh); |