From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754376AbcA0J3f (ORCPT ); Wed, 27 Jan 2016 04:29:35 -0500 Received: from mga14.intel.com ([192.55.52.115]:1438 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752487AbcA0J2r (ORCPT ); Wed, 27 Jan 2016 04:28:47 -0500 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.22,354,1449561600"; d="scan'208";a="735033044" From: Rui Wang To: herbert@gondor.apana.org.au Cc: tim.c.chen@linux.intel.com, rui.y.wang@intel.com, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 3/4] crypto: algif_hash - wait for crypto_ahash_init() to complete Date: Wed, 27 Jan 2016 17:08:37 +0800 Message-Id: <1453885718-24599-4-git-send-email-rui.y.wang@intel.com> X-Mailer: git-send-email 1.7.5.4 In-Reply-To: <1453885718-24599-1-git-send-email-rui.y.wang@intel.com> References: <1453885718-24599-1-git-send-email-rui.y.wang@intel.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org hash_sendmsg/sendpage() need to wait for the completion of crypto_ahash_init() otherwise it can cause panic. Signed-off-by: Rui Wang --- crypto/algif_hash.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/crypto/algif_hash.c b/crypto/algif_hash.c index b4c24fe..83dc095 100644 --- a/crypto/algif_hash.c +++ b/crypto/algif_hash.c @@ -49,7 +49,8 @@ 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; } @@ -120,6 +121,7 @@ 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; } -- 1.8.3.1