From d59d1ab9b4c02b705755e27fef5b5468af29067c 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 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 --- 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 f41fd3cf5c7d0..e6a9b8cb22d36 100644 --- a/drivers/md/dm-raid.c +++ b/drivers/md/dm-raid.c @@ -3817,7 +3817,7 @@ 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