4.9-stable patches

added patches:
	dm-raid-fix-kasan-warning-in-raid5_add_disks.patch

diff --git a/queue-4.9/dm-raid-fix-kasan-warning-in-raid5_add_disks.patch b/queue-4.9/dm-raid-fix-kasan-warning-in-raid5_add_disks.patch
new file mode 100644 (file)
index 0000000..f2f6ed6
--- /dev/null
+++ b/queue-4.9/dm-raid-fix-kasan-warning-in-raid5_add_disks.patch
@@ -0,0 +1,32 @@
+From 617b365872a247480e9dcd50a32c8d1806b21861 Mon Sep 17 00:00:00 2001
+From: Mikulas Patocka <mpatocka@redhat.com>
+Date: Wed, 29 Jun 2022 13:40:57 -0400
+Subject: dm raid: fix KASAN warning in raid5_add_disks
+
+From: Mikulas Patocka <mpatocka@redhat.com>
+
+commit 617b365872a247480e9dcd50a32c8d1806b21861 upstream.
+
+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.
+
+Cc: stable@vger.kernel.org
+Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
+Signed-off-by: Mike Snitzer <snitzer@kernel.org>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ drivers/md/raid5.c |    1 +
+ 1 file changed, 1 insertion(+)
+
+--- a/drivers/md/raid5.c
++++ b/drivers/md/raid5.c
+@@ -7322,6 +7322,7 @@ 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;
+ 

diff --git a/queue-4.9/series b/queue-4.9/series
new file mode 100644 (file)
index 0000000..f59d0fb
--- /dev/null
+++ b/queue-4.9/series
@@ -0,0 +1 @@
+dm-raid-fix-kasan-warning-in-raid5_add_disks.patch