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. Signed-off-by: Mikulas Patocka <mpatocka@xxxxxxxxxx> Cc: stable@xxxxxxxxxxxxxxx --- drivers/md/raid5.c | 1 + 1 file changed, 1 insertion(+) Index: linux-2.6/drivers/md/raid5.c =================================================================== --- linux-2.6.orig/drivers/md/raid5.c 2022-06-24 18:45:53.000000000 +0200 +++ linux-2.6/drivers/md/raid5.c 2022-06-24 18:46:59.000000000 +0200 @@ -8065,6 +8065,7 @@ static int raid5_add_disk(struct mddev * */ 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;
