Tejun Heo e0223003e6 cgroup: fix error handling regressions in proc_cgroup_show() and cgroup_release_agent()
4c737b41de7f ("cgroup: make cgroup_path() and friends behave in the
style of strlcpy()") broke error handling in proc_cgroup_show() and
cgroup_release_agent() by not handling negative return values from
cgroup_path_ns_locked().  Fix it.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2016-09-29 15:55:16 +02:00
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