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authorLars Ellenberg <lars.ellenberg@linbit.com>2016-06-14 01:26:39 +0300
committerJens Axboe <axboe@fb.com>2016-06-14 06:43:08 +0300
commit1b57e66384e2d21150301e68078526fac5680a16 (patch)
tree3af5073c4650026854b1af1af191ac9f22ec6464 /drivers/block/drbd
parent27ea1d876e16c0ca5ae6335fc85cf4f278f5c98c (diff)
downloadlinux-1b57e66384e2d21150301e68078526fac5680a16.tar.xz
drbd: correctly handle failed crypto_alloc_hash
crypto_alloc_hash returns an ERR_PTR(), not NULL. Also reset peer_integrity_tfm to NULL, to not call crypto_free_hash() on an errno in the cleanup path. Reported-by: Insu Yun <wuninsu@gmail.com> Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com> Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com> Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'drivers/block/drbd')
-rw-r--r--drivers/block/drbd/drbd_receiver.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/block/drbd/drbd_receiver.c b/drivers/block/drbd/drbd_receiver.c
index 0d74602feca0..df45713dfbe8 100644
--- a/drivers/block/drbd/drbd_receiver.c
+++ b/drivers/block/drbd/drbd_receiver.c
@@ -3681,7 +3681,8 @@ static int receive_protocol(struct drbd_connection *connection, struct packet_in
*/
peer_integrity_tfm = crypto_alloc_ahash(integrity_alg, 0, CRYPTO_ALG_ASYNC);
- if (!peer_integrity_tfm) {
+ if (IS_ERR(peer_integrity_tfm)) {
+ peer_integrity_tfm = NULL;
drbd_err(connection, "peer data-integrity-alg %s not supported\n",
integrity_alg);
goto disconnect;