diff options
| author | Diogo Jahchan Koike <djahchankoike@gmail.com> | 2024-09-10 18:18:34 -0300 |
|---|---|---|
| committer | Kent Overstreet <kent.overstreet@linux.dev> | 2024-09-21 11:39:49 -0400 |
| commit | 025c55a4c7f11ea38521c6e797f3192ad8768c93 (patch) | |
| tree | b9debe4e9e97622cedf7a699ae08dd98b48f0dca /lib | |
| parent | abb43dd677f3c5508dc369a61f82f89a8b16b811 (diff) | |
bcachefs: return err ptr instead of null in read sb clean
syzbot reported a null-ptr-deref in bch2_fs_start. [0]
When a sb is marked clear but doesn't have a clean section
bch2_read_superblock_clean returns NULL which PTR_ERR_OR_ZERO
lets through, eventually leading to a null ptr dereference down
the line. Adjust read sb clean to return an ERR_PTR indicating the
invalid clean section.
[0] https://syzkaller.appspot.com/bug?extid=1cecc37d87c4286e5543
Reported-by: syzbot+1cecc37d87c4286e5543@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=1cecc37d87c4286e5543
Signed-off-by: Diogo Jahchan Koike <djahchankoike@gmail.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Diffstat (limited to 'lib')
0 files changed, 0 insertions, 0 deletions