The add_new_disk returns with communication locked if
__sendmsg returns failure, fix it with call unlock_comm
before return.
Reported-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
CC: Goldwyn Rodrigues <rgoldwyn@xxxxxxxx>
Signed-off-by: Guoqing Jiang <gqjiang@xxxxxxxx>
---
drivers/md/md-cluster.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/md/md-cluster.c b/drivers/md/md-cluster.c
index 7299ce2..03082e1 100644
--- a/drivers/md/md-cluster.c
+++ b/drivers/md/md-cluster.c
@@ -1311,8 +1311,10 @@ static int add_new_disk(struct mddev *mddev, struct md_rdev *rdev)
cmsg.raid_slot = cpu_to_le32(rdev->desc_nr);
lock_comm(cinfo, 1);
ret = __sendmsg(cinfo, &cmsg);
- if (ret)
+ if (ret) {
+ unlock_comm(cinfo);
return ret;
+ }
cinfo->no_new_dev_lockres->flags |= DLM_LKF_NOQUEUE;
ret = dlm_lock_sync(cinfo->no_new_dev_lockres, DLM_LOCK_EX);
cinfo->no_new_dev_lockres->flags &= ~DLM_LKF_NOQUEUE;
--
2.6.6
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