diff options
| author | Mikulas Patocka <mpatocka@redhat.com> | 2022-06-29 13:40:57 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-07-07 17:35:09 +0200 |
| commit | 3553a69bb52be2deba61d0ca064c41aee842bb35 (patch) | |
| tree | e1e0264360c0487348d8869de8aac5fba8d93649 | |
| parent | df1a5ab0dd0775f2ea101c71f2addbc4c0ea0f85 (diff) | |
| download | linux-stable-3553a69bb52be2deba61d0ca064c41aee842bb35.tar.gz linux-stable-3553a69bb52be2deba61d0ca064c41aee842bb35.tar.bz2 linux-stable-3553a69bb52be2deba61d0ca064c41aee842bb35.zip | |
dm raid: fix KASAN warning in raid5_add_disks
commit 617b365872a247480e9dcd50a32c8d1806b21861 upstream.
There's a KASAN warning in raid5_add_disk when running the LVM testsuite.
The warning happens in the test
lvconvert-raid-reshape-linear_to_raid6-single-type.sh. We fix the warning
by verifying that rdev->saved_raid_disk is within limits.
Cc: stable@vger.kernel.org
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/md/raid5.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index c7bda4b0bced..dad426cc0f90 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -7716,6 +7716,7 @@ static int raid5_add_disk(struct mddev *mddev, struct md_rdev *rdev) */ if (rdev->saved_raid_disk >= 0 && rdev->saved_raid_disk >= first && + rdev->saved_raid_disk <= last && conf->disks[rdev->saved_raid_disk].rdev == NULL) first = rdev->saved_raid_disk; |