diff options
| author | Mikulas Patocka <mpatocka@redhat.com> | 2019-04-05 15:26:39 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-04-17 08:39:54 +0200 |
| commit | 63bec9219c398a80a78608174225c16940fdf0d0 (patch) | |
| tree | 6f5439f2cf660d2c8d4e56f8aaa0dc3cd5d9088f /scripts/gdb/linux/utils.py | |
| parent | de022a3453e67105ce587f3971ecb5b880f4b609 (diff) | |
dm integrity: fix deadlock with overlapping I/O
commit 4ed319c6ac08e9a28fca7ac188181ac122f4de84 upstream.
dm-integrity will deadlock if overlapping I/O is issued to it, the bug
was introduced by commit 724376a04d1a ("dm integrity: implement fair
range locks"). Users rarely use overlapping I/O so this bug went
undetected until now.
Fix this bug by correcting, likely cut-n-paste, typos in
ranges_overlap() and also remove a flawed ranges_overlap() check in
remove_range_unlocked(). This condition could leave unprocessed bios
hanging on wait_list forever.
Cc: stable@vger.kernel.org # v4.19+
Fixes: 724376a04d1a ("dm integrity: implement fair range locks")
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'scripts/gdb/linux/utils.py')
0 files changed, 0 insertions, 0 deletions