From 9a8c0fa861e4db60409b4dda254cef5e17e4d43c Mon Sep 17 00:00:00 2001 From: NeilBrown Date: Thu, 25 Jun 2015 17:06:40 +1000 Subject: [PATCH] md: unlock mddev_lock on an error path. This error path retuns while still holding the lock - bad. Fixes: 6791875e2e53 ("md: make reconfig_mutex optional for writes to md sysfs files.") Cc: stable@vger.kernel.org (v4.0+) Signed-off-by: NeilBrown --- drivers/md/md.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/md/md.c b/drivers/md/md.c index 939739f..5fcce73 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -4014,8 +4014,10 @@ new_dev_store(struct mddev *mddev, const char *buf, size_t len) else rdev = md_import_device(dev, -1, -1); - if (IS_ERR(rdev)) + if (IS_ERR(rdev)) { + mddev_unlock(mddev); return PTR_ERR(rdev); + } err = bind_rdev_to_array(rdev, mddev); out: if (err) -- 2.7.4