From 8d5f3e598ed61ec1e50cc685ac8b2cb8c79b6b07 Mon Sep 17 00:00:00 2001 From: Mikulas Patocka Date: Sun, 24 Jul 2022 14:33:52 -0400 Subject: [PATCH] dm raid: fix address sanitizer warning in raid_resume [ Upstream commit d59d1ab9b4c02b705755e27fef5b5468af29067c ] 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@vger.kernel.org Signed-off-by: Mikulas Patocka Signed-off-by: Mike Snitzer Signed-off-by: Sasha Levin --- drivers/md/dm-raid.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/md/dm-raid.c b/drivers/md/dm-raid.c index 5f7e40c48e471..eba277bb8a1f1 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)) -- 2.39.5