dm crypt: fix error return code in crypt_ctr()

Fix to return error code -ENOMEM from the mempool_create_kmalloc_pool()
error handling case instead of 0, as done elsewhere in this function.

Fixes: ef43aa38063a6 ("dm crypt: add cryptographic data integrity protection (authenticated encryption)")
Cc: stable@vger.kernel.org # 4.12+
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>

diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c
index 9712414..554d603 100644 (file)
--- a/drivers/md/dm-crypt.c
+++ b/drivers/md/dm-crypt.c
@@ -2746,6 +2746,7 @@ static int crypt_ctr(struct dm_target *ti, unsigned int argc, char **argv)
                        cc->tag_pool_max_sectors * cc->on_disk_tag_size);
                if (!cc->tag_pool) {
                        ti->error = "Cannot allocate integrity tags mempool";
+                       ret = -ENOMEM;
                        goto bad;
                }