From: Wei Yongjun <weiyongjun1@huawei.com>
Date: Wed, 17 Jan 2018 11:24:26 +0000 (+0000)
Subject: dm crypt: fix error return code in crypt_ctr()
X-Git-Tag: v4.15-rc9~9^2
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=3cc2e57c4beabcbbaa46e1ac6d77ca8276a4a42d;p=thirdparty%2Fkernel%2Flinux.git

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 971241409c308..554d60394c066 100644
--- 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;
 		}