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authorWang, Rui Y <rui.y.wang@intel.com>2016-01-27 12:08:37 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2016-02-17 23:31:04 +0300
commit792c6ff0d8ce1a3d1da9f7b657aa6a8017515216 (patch)
tree7f8f2d83add7d4eefe607a5a1967607eac564a84 /crypto
parent6bb06a4fa1894533beaab22f0c657866b0e61b06 (diff)
downloadlinux-792c6ff0d8ce1a3d1da9f7b657aa6a8017515216.tar.xz
crypto: algif_hash - wait for crypto_ahash_init() to complete
commit fe09786178f9df713a4b2dd6b93c0a722346bf5e upstream. hash_sendmsg/sendpage() need to wait for the completion of crypto_ahash_init() otherwise it can cause panic. Signed-off-by: Rui Wang <rui.y.wang@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'crypto')
-rw-r--r--crypto/algif_hash.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/crypto/algif_hash.c b/crypto/algif_hash.c
index 608a7562839d..68a5ceaa04c8 100644
--- a/crypto/algif_hash.c
+++ b/crypto/algif_hash.c
@@ -54,7 +54,8 @@ static int hash_sendmsg(struct socket *sock, struct msghdr *msg,
lock_sock(sk);
if (!ctx->more) {
- err = crypto_ahash_init(&ctx->req);
+ err = af_alg_wait_for_completion(crypto_ahash_init(&ctx->req),
+ &ctx->completion);
if (err)
goto unlock;
}
@@ -125,6 +126,7 @@ static ssize_t hash_sendpage(struct socket *sock, struct page *page,
} else {
if (!ctx->more) {
err = crypto_ahash_init(&ctx->req);
+ err = af_alg_wait_for_completion(err, &ctx->completion);
if (err)
goto unlock;
}