Commit 4d8e28ff authored Apr 30, 2020 by Wu Bo Committed by Ilya Dryomov May 04, 2020

ceph: fix double unlock in handle_cap_export()



If the ceph_mdsc_open_export_target_session() return fails, it will
do a "goto retry", but the session mutex has already been unlocked.
Re-lock the mutex in that case to ensure that we don't unlock it
twice.

Signed-off-by: Wu Bo <wubo40@huawei.com>
Reviewed-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>

parent 7d8976af

fs/ceph/caps.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -3746,6 +3746,7 @@ retry:
		WARN_ON(1);
		tsession = NULL;
		target = -1;
		mutex_lock(&session->s_mutex);
		}
		goto retry;

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