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| author | Mikulas Patocka <mpatocka@redhat.com> | 2022-06-29 20:40:57 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-07-07 18:52:16 +0300 |
| commit | d8bca518d5272fe349e0a722fdb9e3acb661f3f0 (patch) | |
| tree | d87d1469da2eea6299fc21f8ac74f1246022ff61 | |
| parent | 9bf2b0757b04c78dc5d6e3a198acca98457b32a1 (diff) | |
| download | linux-d8bca518d5272fe349e0a722fdb9e3acb661f3f0.tar.xz | |
dm raid: fix KASAN warning in raid5_add_disks
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>
| -rw-r--r-- | drivers/md/raid5.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index 02767866b9ff..c8cafdb094aa 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -8004,6 +8004,7 @@ static int raid5_add_disk(struct mddev *mddev, struct md_rdev *rdev) */ 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; |