From: David Miller Subject: Re: [PATCH] Crypto: Don't use err uninitialized in algif_hash.c:hash_sendmsg() Date: Sun, 26 Jun 2011 16:19:14 -0700 (PDT) Message-ID: <20110626.161914.1023073148636112144.davem@davemloft.net> References: Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org, herbert@gondor.hengli.com.au To: jj@chaosbits.net Return-path: Received: from shards.monkeyblade.net ([198.137.202.13]:38146 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756053Ab1FZXT0 (ORCPT ); Sun, 26 Jun 2011 19:19:26 -0400 In-Reply-To: Sender: linux-crypto-owner@vger.kernel.org List-ID: From: Jesper Juhl Date: Sun, 26 Jun 2011 23:23:06 +0200 (CEST) > If af_alg_make_sg() returns <0 in hash_sendmsg() we'll jump to the > 'unlock' label without having set 'err' to anything. At the 'unlock' > label the value of 'err' is tested to determine return value of the > function - not good to base that on a uninitialized variable. > > This patch sets 'err' to the return value of hash_sendmsg() before the > 'goto' when the value is less than zero, which seems to me to be the > proper thing to do. > > Signed-off-by: Jesper Juhl Acked-by: David S. Miller