projects / linux-2.6-block.git / commit
? search:
summary | shortlog | log | commit | commitdiff | tree
(parent: e0d5fc7) | patch
jbd2: fix potential use-after-free in jbd2_fc_wait_bufs
authorYe Bin <yebin10@huawei.com>
Wed, 14 Sep 2022 10:08:12 +0000 (18:08 +0800)
committerTheodore Ts'o <tytso@mit.edu>
Sat, 1 Oct 2022 03:46:52 +0000 (23:46 -0400)
commit243d1a5d505d0b0460c9af0ad56ed4a56ef0bebd
tree03104b6889bdf97ca76bd508ab80c03f1838d4aftree | snapshot
parente0d5fc7a6d80ac2406c7dfc6bb625201d0250a8acommit | diff
jbd2: fix potential use-after-free in jbd2_fc_wait_bufs

In 'jbd2_fc_wait_bufs' use 'bh' after put buffer head reference count
which may lead to use-after-free.
So judge buffer if uptodate before put buffer head reference count.

Cc: stable@kernel.org
Signed-off-by: Ye Bin <yebin10@huawei.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20220914100812.1414768-3-yebin10@huawei.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
fs/jbd2/journal.c diff | blob | blame | history
Linux 6.x block layer and io_uring tree(s)