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authorTejun Heo <tj@kernel.org>2014-02-08 10:26:33 -0500
committerTejun Heo <tj@kernel.org>2014-02-08 10:26:33 -0500
commitb58c89986a77a23658682a100eb15d8edb571ebb (patch)
tree414266b86775faf92a7027e0ded52ca6b50f4c24 /kernel
parenteb46bf89696972b856a9adb6aebd5c7b65c266e4 (diff)
downloadlinux-b58c89986a77a23658682a100eb15d8edb571ebb.tar.gz
cgroup: fix error return from cgroup_create()
cgroup_create() was returning 0 after allocation failures. Fix it. Signed-off-by: Tejun Heo <tj@kernel.org> Acked-by: Li Zefan <lizefan@huawei.com> Cc: stable@vger.kernel.org
Diffstat (limited to 'kernel')
-rw-r--r--kernel/cgroup.c10
1 files changed, 7 insertions, 3 deletions
diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index 793f3717607..0eb7b868e1a 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -4158,7 +4158,7 @@ static long cgroup_create(struct cgroup *parent, struct dentry *dentry,
struct cgroup *cgrp;
struct cgroup_name *name;
struct cgroupfs_root *root = parent->root;
- int ssid, err = 0;
+ int ssid, err;
struct cgroup_subsys *ss;
struct super_block *sb = root->sb;
@@ -4168,8 +4168,10 @@ static long cgroup_create(struct cgroup *parent, struct dentry *dentry,
return -ENOMEM;
name = cgroup_alloc_name(dentry);
- if (!name)
+ if (!name) {
+ err = -ENOMEM;
goto err_free_cgrp;
+ }
rcu_assign_pointer(cgrp->name, name);
/*
@@ -4177,8 +4179,10 @@ static long cgroup_create(struct cgroup *parent, struct dentry *dentry,
* a half-baked cgroup.
*/
cgrp->id = idr_alloc(&root->cgroup_idr, NULL, 1, 0, GFP_KERNEL);
- if (cgrp->id < 0)
+ if (cgrp->id < 0) {
+ err = -ENOMEM;
goto err_free_name;
+ }
/*
* Only live parents can have children. Note that the liveliness