[PATCH] ecryptfs: fix crypto_alloc_blkcipher() error check

The return value of crypto_alloc_blkcipher() should be checked by IS_ERR().

Cc: Mike Halcrow <mhalcrow@us.ibm.com>
Cc: Phillip Hellewell <phillip@hellewell.homeip.net>
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 2 insertions, 1 deletions

diff --git a/fs/ecryptfs/crypto.c b/fs/ecryptfs/crypto.c
index 136175a69332..f63a7755fe86 100644
--- a/fs/ecryptfs/crypto.c
+++ b/fs/ecryptfs/crypto.c
@@ -820,7 +820,8 @@ int ecryptfs_init_crypt_ctx(struct ecryptfs_crypt_stat *crypt_stat)
         crypt_stat->tfm = crypto_alloc_blkcipher(full_alg_name, 0,
                                                  CRYPTO_ALG_ASYNC);
         kfree(full_alg_name);
-        if (!crypt_stat->tfm) {
+        if (IS_ERR(crypt_stat->tfm)) {
+                rc = PTR_ERR(crypt_stat->tfm);
                 ecryptfs_printk(KERN_ERR, "cryptfs: init_crypt_ctx(): "
                                 "Error initializing cipher [%s]\n",
                                 crypt_stat->cipher);