This is a note to let you know that I've just added the patch titled dm raid: fix address sanitizer warning in raid_resume to the 5.18-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: dm-raid-fix-address-sanitizer-warning-in-raid_resume.patch and it can be found in the queue-5.18 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 737fa72cb41c624004f0ab3e93689a3a9cfa1b17 Author: Mikulas Patocka <mpatocka@xxxxxxxxxx> Date: Sun Jul 24 14:33:52 2022 -0400 dm raid: fix address sanitizer warning in raid_resume [ Upstream commit 7dad24db59d2d2803576f2e3645728866a056dab ] There is a KASAN warning in raid_resume when running the lvm test lvconvert-raid.sh. The reason for the warning is that mddev->raid_disks is greater than rs->raid_disks, so the loop touches one entry beyond the allocated length. Cc: stable@xxxxxxxxxxxxxxx Signed-off-by: Mikulas Patocka <mpatocka@xxxxxxxxxx> Signed-off-by: Mike Snitzer <snitzer@xxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/drivers/md/dm-raid.c b/drivers/md/dm-raid.c index 92e6b731f9d6..a55d6f6f294b 100644 --- a/drivers/md/dm-raid.c +++ b/drivers/md/dm-raid.c @@ -3824,7 +3824,7 @@ static void attempt_restore_of_faulty_devices(struct raid_set *rs) memset(cleared_failed_devices, 0, sizeof(cleared_failed_devices)); - for (i = 0; i < mddev->raid_disks; i++) { + for (i = 0; i < rs->raid_disks; i++) { r = &rs->dev[i].rdev; /* HM FIXME: enhance journal device recovery processing */ if (test_bit(Journal, &r->flags))