diff options
| author | OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> | 2022-01-09 18:36:43 +0900 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2022-01-20 06:30:12 -0700 |
| commit | 3ee859e384d453d6ac68bfd5971f630d9fa46ad3 (patch) | |
| tree | 16e2d6b6407e50614f4f0c6ef9882305cd5fd27f /block/mq-deadline.c | |
| parent | fd9f4e62a39f09a7c014d7415c2b9d1390aa0504 (diff) | |
block: Fix wrong offset in bio_truncate()
bio_truncate() clears the buffer outside of last block of bdev, however
current bio_truncate() is using the wrong offset of page. So it can
return the uninitialized data.
This happened when both of truncated/corrupted FS and userspace (via
bdev) are trying to read the last of bdev.
Reported-by: syzbot+ac94ae5f68b84197f41c@syzkaller.appspotmail.com
Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Link: https://lore.kernel.org/r/875yqt1c9g.fsf@mail.parknet.co.jp
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/mq-deadline.c')
0 files changed, 0 insertions, 0 deletions