tree a1679017c58f65b7fd20febab16bb338354bd59b
parent 76be97c1fc945db08aae1f1b746012662d643e97
author Julia Lawall <julia@diku.dk> 1281521501 +0200
committer Tyler Hicks <tyhicks@linux.vnet.ibm.com> 1282924252 -0500

fs/ecryptfs: Return -ENOMEM on memory allocation failure

In this code, 0 is returned on memory allocation failure, even though other
failures return -ENOMEM or other similar values.

A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
@@
expression ret;
expression x,e1,e2,e3;
@@

ret = 0
... when != ret = e1
*x = \(kmalloc\|kcalloc\|kzalloc\)(...)
... when != ret = e2
if (x == NULL) { ... when != ret = e3
  return ret;
}
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Tyler Hicks <tyhicks@linux.vnet.ibm.com>