diff options
| author | Tejun Heo <tj@kernel.org> | 2014-02-08 10:26:33 -0500 |
|---|---|---|
| committer | Jiri Slaby <jslaby@suse.cz> | 2014-03-05 17:13:43 +0100 |
| commit | 7737f595e8f566d41ef9f91246816bfbed4b7a87 (patch) | |
| tree | 8729b1468e809002150a91c650bb053cc0465bdc | |
| parent | bbfb7e7c739e477ca262ffa14dd9e4a1296e5f97 (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: Jiri Slaby <jslaby@suse.cz>
| -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 b6fd78344c5..8ea46f2c4b5 100644 --- a/kernel/cgroup.c +++ b/kernel/cgroup.c @@ -1612,10 +1612,10 @@ 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; |