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Commit 71f601c7 authored by Mikulas Patocka's avatar Mikulas Patocka Committed by Greg Kroah-Hartman
Browse files

dm raid: fix address sanitizer warning in raid_resume 



commit 7dad24db59d2d2803576f2e3645728866a056dab upstream.

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: default avatarMikulas Patocka <mpatocka@redhat.com>
Signed-off-by: default avatarMike Snitzer <snitzer@kernel.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 2f2fa48c

drivers/md/dm-raid.c

+1 −1
Original line number Diff line number Diff line
@@ -3808,7 +3808,7 @@ 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))