oprofilefs: don't oops on allocation failure

... just short-circuit the creation of potential children

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/oprofile/oprofilefs.c b/drivers/oprofile/oprofilefs.c
index d77ebbfc67c9..4ea08979312c 100644
--- a/drivers/oprofile/oprofilefs.c
+++ b/drivers/oprofile/oprofilefs.c
@@ -138,6 +138,9 @@ static int __oprofilefs_create_file(struct dentry *root, char const *name,
         struct dentry *dentry;
         struct inode *inode;
 
+        if (!root)
+                return -ENOMEM;
+
         inode_lock(d_inode(root));
         dentry = d_alloc_name(root, name);
         if (!dentry) {