| commit | 8c380ab4b7b59c0c602743810be1b712514eaebc | [log] [tgz] |
|---|---|---|
| author | Pan Bian <bianpan2016@163.com> | Thu Apr 25 11:44:15 2019 -0400 |
| committer | Theodore Ts'o <tytso@mit.edu> | Thu Apr 25 11:44:15 2019 -0400 |
| tree | 219607cef9f919264702e71af75fac9d3e0a0f76 | |
| parent | e5d01196c0428a206f307e9ee5f6842964098ff0 [diff] |
ext4: avoid drop reference to iloc.bh twice
The reference to iloc.bh has been dropped in ext4_mark_iloc_dirty.
However, the reference is dropped again if error occurs during
ext4_handle_dirty_metadata, which may result in use-after-free bugs.
Fixes: fb265c9cb49e("ext4: add ext4_sb_bread() to disambiguate ENOMEM cases")
Signed-off-by: Pan Bian <bianpan2016@163.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Jan Kara <jack@suse.cz>
Cc: stable@kernel.org