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| author | Zefan Li <lizefan@huawei.com> | 2014-09-20 14:35:43 +0800 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2014-09-20 12:23:35 -0400 |
| commit | 3e2cd91ab92665148616a80dc0745c499d2746a7 (patch) | |
| tree | d9deebb021eb70e509f0c44b4094bc18509ea036 /kernel/cgroup.c | |
| parent | a25eb52e81a40e986179a790fbb5a1f02f482b7a (diff) | |
| download | linux-stable-3e2cd91ab92665148616a80dc0745c499d2746a7.tar.gz linux-stable-3e2cd91ab92665148616a80dc0745c499d2746a7.tar.bz2 linux-stable-3e2cd91ab92665148616a80dc0745c499d2746a7.zip | |
cgroup: fix missing unlock in cgroup_release_agent()
The patch 971ff4935538: "cgroup: use a per-cgroup work for release
agent" from Sep 18, 2014, leads to the following static checker
warning:
kernel/cgroup.c:5310 cgroup_release_agent()
warn: 'mutex:&cgroup_mutex' is sometimes locked here and sometimes unlocked.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Zefan Li <lizefan@huawei.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'kernel/cgroup.c')
| -rw-r--r-- | kernel/cgroup.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/kernel/cgroup.c b/kernel/cgroup.c index 16e3a4f5c9dc..f873c4681316 100644 --- a/kernel/cgroup.c +++ b/kernel/cgroup.c @@ -5291,7 +5291,10 @@ static void cgroup_release_agent(struct work_struct *work) mutex_unlock(&cgroup_mutex); call_usermodehelper(argv[0], argv, envp, UMH_WAIT_EXEC); + goto out_free; out: + mutex_unlock(&cgroup_mutex); +out_free: kfree(agentbuf); kfree(pathbuf); } |