| commit | 61157b24e60fb3cd1f85f2c76a7b1d628f970144 | [log] [tgz] |
|---|---|---|
| author | Pan Bian <bianpan2016@163.com> | Mon Dec 03 23:28:02 2018 -0500 |
| committer | Theodore Ts'o <tytso@mit.edu> | Mon Dec 03 23:28:02 2018 -0500 |
| tree | 0e6fc271e232be09fe8b384561de9010453953b4 | |
| parent | 96f1e097457506f215adfe3c47aacc15a88f6dd7 [diff] |
ext4: fix possible use after free in ext4_quota_enable
The function frees qf_inode via iput but then pass qf_inode to
lockdep_set_quota_inode on the failure path. This may result in a
use-after-free bug. The patch frees df_inode only when it is never used.
Fixes: daf647d2dd5 ("ext4: add lockdep annotations for i_data_sem")
Cc: stable@kernel.org # 4.6
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Pan Bian <bianpan2016@163.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>