From bae3028799dc4f1109acc4df37c8ff06f2d8f1a0 Mon Sep 17 00:00:00 2001
From: Yu Kuai <yukuai3@huawei.com>
Date: Sat, 8 Jul 2023 17:21:51 +0800
Subject: [PATCH] dm raid: fix missing reconfig_mutex unlock in raid_ctr()
error paths
Git-commit: bae3028799dc4f1109acc4df37c8ff06f2d8f1a0
Patch-mainline: v6.5-rc4
References: git-fixes
In the error paths 'bad_stripe_cache' and 'bad_check_reshape',
'reconfig_mutex' is still held after raid_ctr() returns.
Fixes: 9dbd1aa3a81c ("dm raid: add reshaping support to the target")
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
Signed-off-by: Coly Li <colyli@suse.de>
---
drivers/md/dm-raid.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/drivers/md/dm-raid.c b/drivers/md/dm-raid.c
index 8846bf510a35..3d7366b912bf 100644
--- a/drivers/md/dm-raid.c
+++ b/drivers/md/dm-raid.c
@@ -3271,15 +3271,19 @@ static int raid_ctr(struct dm_target *ti, unsigned int argc, char **argv)
/* Try to adjust the raid4/5/6 stripe cache size to the stripe size */
if (rs_is_raid456(rs)) {
r = rs_set_raid456_stripe_cache(rs);
- if (r)
+ if (r) {
+ mddev_unlock(&rs->md);
goto bad_stripe_cache;
+ }
}
/* Now do an early reshape check */
if (test_bit(RT_FLAG_RESHAPE_RS, &rs->runtime_flags)) {
r = rs_check_reshape(rs);
- if (r)
+ if (r) {
+ mddev_unlock(&rs->md);
goto bad_check_reshape;
+ }
/* Restore new, ctr requested layout to perform check */
rs_config_restore(rs, &rs_layout);
@@ -3288,6 +3292,7 @@ static int raid_ctr(struct dm_target *ti, unsigned int argc, char **argv)
r = rs->md.pers->check_reshape(&rs->md);
if (r) {
ti->error = "Reshape check failed";
+ mddev_unlock(&rs->md);
goto bad_check_reshape;
}
}
--
2.35.3