diff options
Diffstat (limited to 'kernel/cgroup.c')
| -rw-r--r-- | kernel/cgroup.c | 5 |
1 files changed, 1 insertions, 4 deletions
diff --git a/kernel/cgroup.c b/kernel/cgroup.c index 75c0ff00aca6..5f01e00cffc4 100644 --- a/kernel/cgroup.c +++ b/kernel/cgroup.c @@ -6309,14 +6309,11 @@ struct cgroup_namespace *copy_cgroup_ns(unsigned long flags, if (!ns_capable(user_ns, CAP_SYS_ADMIN)) return ERR_PTR(-EPERM); - mutex_lock(&cgroup_mutex); + /* It is not safe to take cgroup_mutex here */ spin_lock_irq(&css_set_lock); - cset = task_css_set(current); get_css_set(cset); - spin_unlock_irq(&css_set_lock); - mutex_unlock(&cgroup_mutex); new_ns = alloc_cgroup_ns(); if (IS_ERR(new_ns)) { |