From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 15F03C433DF for ; Tue, 23 Jun 2020 20:56:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D580220724 for ; Tue, 23 Jun 2020 20:56:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1592945802; bh=DKXlsBCTmi+G4g/W7Tcdy0td3xC/cjRZok4Bvjuy99g=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=Gpf/zIUhYXhx/Vwiurf6o89jVFZ3pJsQi6hsndTgKSZo2s1VY+ruH3cY0m3xqeyCb 26VLODyPhAIxU0vq8rte4IyPjf7cxRYToYDPsCCwSz9An7KD6ou2LQ+H8SyGRxDywL 80KiguGJmCEm04tmSHdPpX9PZ6ixeCW5AeR8ru/E= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2393018AbgFWU4k (ORCPT ); Tue, 23 Jun 2020 16:56:40 -0400 Received: from mail.kernel.org ([198.145.29.99]:40364 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2392530AbgFWUn2 (ORCPT ); Tue, 23 Jun 2020 16:43:28 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 750B721941; Tue, 23 Jun 2020 20:43:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1592945009; bh=DKXlsBCTmi+G4g/W7Tcdy0td3xC/cjRZok4Bvjuy99g=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=sj6gcohO1aO2rTY7s6NuMlvMPdp9L9qYCUbX+FbO0801+MN3BP3jQjodV2PBLUZW0 ifJiTWLezFKKIMkEE7Q1VV0C+ov+pHLRG7NgT5LVoKg/DMnoFu2M76lD1dDdeIrfwl fHt/KbA2yakyTXSdDePgG49qdgO+YkV56K1F+YgE= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Herbert Xu , Stephan Mueller Subject: [PATCH 4.19 198/206] crypto: algif_skcipher - Cap recv SG list at ctx->used Date: Tue, 23 Jun 2020 21:58:46 +0200 Message-Id: <20200623195326.773395637@linuxfoundation.org> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20200623195316.864547658@linuxfoundation.org> References: <20200623195316.864547658@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Herbert Xu commit 7cf81954705b7e5b057f7dc39a7ded54422ab6e1 upstream. Somewhere along the line the cap on the SG list length for receive was lost. This patch restores it and removes the subsequent test which is now redundant. Fixes: 2d97591ef43d ("crypto: af_alg - consolidation of...") Cc: Signed-off-by: Herbert Xu Reviewed-by: Stephan Mueller Signed-off-by: Herbert Xu Signed-off-by: Greg Kroah-Hartman --- crypto/algif_skcipher.c | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-) --- a/crypto/algif_skcipher.c +++ b/crypto/algif_skcipher.c @@ -78,14 +78,10 @@ static int _skcipher_recvmsg(struct sock return PTR_ERR(areq); /* convert iovecs of output buffers into RX SGL */ - err = af_alg_get_rsgl(sk, msg, flags, areq, -1, &len); + err = af_alg_get_rsgl(sk, msg, flags, areq, ctx->used, &len); if (err) goto free; - /* Process only as much RX buffers for which we have TX data */ - if (len > ctx->used) - len = ctx->used; - /* * If more buffers are to be expected to be processed, process only * full block size buffers.