From: Mikulas Patocka Date: Sun, 24 Jul 2022 18:33:52 +0000 (-0400) Subject: dm raid: fix address sanitizer warning in raid_resume X-Git-Tag: v5.18.18~54 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=74af83732a39ab7d3bc9b49219a535853e25679f;p=thirdparty%2Fkernel%2Fstable.git 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@vger.kernel.org Signed-off-by: Mikulas Patocka Signed-off-by: Mike Snitzer Signed-off-by: Sasha Levin --- diff --git a/drivers/md/dm-raid.c b/drivers/md/dm-raid.c index 92e6b731f9d66..a55d6f6f294bf 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))