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| author | Zhang Huan <zhhuan@gmail.com> | 2011-04-05 19:16:20 -0400 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2011-04-05 19:16:20 -0400 |
| commit | 6cba611e600ded15f642552ce6b5f7ee243bacf0 (patch) | |
| tree | 5ffde3bc5fb87bbf9693bc83a53d9212ae04f267 /sound | |
| parent | 46e4690bbd9a4f8d9e7c4f34e34b48f703ad47e0 (diff) | |
| download | linux-3.10-6cba611e600ded15f642552ce6b5f7ee243bacf0.tar.gz linux-3.10-6cba611e600ded15f642552ce6b5f7ee243bacf0.tar.bz2 linux-3.10-6cba611e600ded15f642552ce6b5f7ee243bacf0.zip | |
jbd2: fix potential memory leak on transaction commit
There is potential memory leak of journal head in function
jbd2_journal_commit_transaction. The problem is that JBD2 will not
reclaim the journal head of commit record if error occurs or journal
is abotred.
I use the following script to reproduce this issue, on a RHEL6
system. I found it very easy to reproduce with async commit enabled.
mount /dev/sdb /mnt -o journal_checksum,journal_async_commit
touch /mnt/xxx
echo offline > /sys/block/sdb/device/state
sync
umount /mnt
rmmod ext4
rmmod jbd2
Removal of the jbd2 module will make slab complaining that
"cache `jbd2_journal_head': can't free all objects".
Signed-off-by: Zhang Huan <zhhuan@gmail.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'sound')
0 files changed, 0 insertions, 0 deletions