mm/vmalloc.c: check kmalloc() return value

kmalloc() may fail, if so return -ENOMEM.

Signed-off-by: Kulikov Vasiliy <segooon@gmail.com>
Acked-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index 8b5e4370540be67f1abcb2cc884a3ce82f46bf1a..918c51335d64165348dc3b54775019f7a78bcaa7 100644 (file)
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -2437,8 +2437,11 @@ static int vmalloc_open(struct inode *inode, struct file *file)
        unsigned int *ptr = NULL;
        int ret;
 
-       if (NUMA_BUILD)
+       if (NUMA_BUILD) {
                ptr = kmalloc(nr_node_ids * sizeof(unsigned int), GFP_KERNEL);
+               if (ptr == NULL)
+                       return -ENOMEM;
+       }
        ret = seq_open(file, &vmalloc_op);
        if (!ret) {
                struct seq_file *m = file->private_data;