diff options
| author | Tejun Heo <tj@kernel.org> | 2014-02-08 10:26:33 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-03-06 22:06:17 -0800 |
| commit | 95efbc257ea4f14c5b034f95ca1b3e6f64d933fa (patch) | |
| tree | e3229644e929b6cc74a8b69403898ba06838688c /kernel | |
| parent | 3a9c76c8381acf8a9e5a78c83a794a840bd99d2e (diff) | |
cgroup: fix error return value in cgroup_mount()
commit eb46bf89696972b856a9adb6aebd5c7b65c266e4 upstream.
When cgroup_mount() fails to allocate an id for the root, it didn't
set ret before jumping to unlock_drop ending up returning 0 after a
failure. Fix it.
Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Li Zefan <lizefan@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/cgroup.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/kernel/cgroup.c b/kernel/cgroup.c index bc1dcabe9217..46ba3ebeed4d 100644 --- a/kernel/cgroup.c +++ b/kernel/cgroup.c @@ -1580,10 +1580,10 @@ static struct dentry *cgroup_mount(struct file_system_type *fs_type, mutex_lock(&cgroup_mutex); mutex_lock(&cgroup_root_mutex); - root_cgrp->id = idr_alloc(&root->cgroup_idr, root_cgrp, - 0, 1, GFP_KERNEL); - if (root_cgrp->id < 0) + ret = idr_alloc(&root->cgroup_idr, root_cgrp, 0, 1, GFP_KERNEL); + if (ret < 0) goto unlock_drop; + root_cgrp->id = ret; /* Check for name clashes with existing mounts */ ret = -EBUSY; |