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dm raid: fix address sanitizer warning in raid_resume

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commit 7dad24db59 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: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Mikulas Patocka
2022-07-24 14:33:52 -04:00
committed by Greg Kroah-Hartman
parent d0b495aa26
commit c2d47bef93
1 changed files with 1 additions and 1 deletions
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2
drivers/md/dm-raid.c
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@@ -3794,7 +3794,7 @@ 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))