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From: Dan Carpenter <dan.carpenter-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
To: Li Zefan <lizefan-hv44wF8Li93QT0dZR+AlfA@public.gmane.org>,
	Vladimir Davydov
	<vdavydov-bzQdu9zFT3WakBO8gow8eQ@public.gmane.org>,
	Andrew Morton
	<akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>
Cc: cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	kernel-janitors-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: [patch] cpuset: lock vs unlock typo
Date: Mon, 27 Oct 2014 16:27:02 +0300	[thread overview]
Message-ID: <20141027132702.GA32133@mwanda> (raw)

This will deadlock instead of unlocking.

Fixes: f73eae8d8384 ('cpuset: simplify cpuset_node_allowed API')
Signed-off-by: Dan Carpenter <dan.carpenter-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>

diff --git a/kernel/cpuset.c b/kernel/cpuset.c
index 38f7433..4eaa203 100644
--- a/kernel/cpuset.c
+++ b/kernel/cpuset.c
@@ -1992,7 +1992,7 @@ static int cpuset_css_online(struct cgroup_subsys_state *css)
 	spin_lock_irq(&callback_lock);
 	cs->mems_allowed = parent->mems_allowed;
 	cpumask_copy(cs->cpus_allowed, parent->cpus_allowed);
-	spin_lock_irq(&callback_lock);
+	spin_unlock_irq(&callback_lock);
 out_unlock:
 	mutex_unlock(&cpuset_mutex);
 	return 0;

             reply	other threads:[~2014-10-27 13:27 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-10-27 13:27 Dan Carpenter [this message]
2014-10-27 15:08 ` [patch] cpuset: lock vs unlock typo Vladimir Davydov

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