lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  PHC 
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Date:	Sat, 20 Sep 2014 14:35:43 +0800
From:	Zefan Li <>
To:	Tejun Heo <>
CC:	Cgroups <>,
	LKML <>,
	Dan Carpenter <>
Subject: [PATCH] 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

	kernel/cgroup.c:5310 cgroup_release_agent()
	warn: 'mutex:&cgroup_mutex' is sometimes locked here and sometimes unlocked.

Reported-by: Dan Carpenter <>
Signed-off-by: Zefan Li <>
 kernel/cgroup.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index 7f23551..33f15b3 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -5290,7 +5290,10 @@ static void cgroup_release_agent(struct work_struct *work)
 	call_usermodehelper(argv[0], argv, envp, UMH_WAIT_EXEC);
+	goto out_free;
+	mutex_unlock(&cgroup_mutex);

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

Powered by blists - more mailing lists