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=-0.6 required=3.0 tests=DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS,T_DKIM_INVALID, URIBL_BLOCKED autolearn=ham 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 6B202C3279B for ; Fri, 6 Jul 2018 16:27:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5CBBF23EA8 for ; Fri, 6 Jul 2018 16:27:18 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=chronox.de header.i=@chronox.de header.b="POEyycBw" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5CBBF23EA8 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=chronox.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933635AbeGFQ1O (ORCPT ); Fri, 6 Jul 2018 12:27:14 -0400 Received: from mo4-p01-ob.smtp.rzone.de ([81.169.146.165]:14550 "EHLO mo4-p01-ob.smtp.rzone.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932483AbeGFQ1M (ORCPT ); Fri, 6 Jul 2018 12:27:12 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; t=1530894431; s=strato-dkim-0002; d=chronox.de; h=References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From: X-RZG-CLASS-ID:X-RZG-AUTH:From:Subject:Sender; bh=2QyDtVIvXZzemf0mk3LaK2PIlbJt2knwJ+eubj0ms5c=; b=POEyycBwsk7lZLexJekuxRyDOE4JtqbCOJMFkychRBollJh/y3FvJtxxDo1lpIm9vL 819BCMOzcssBqAdhmPO3zu6MHCBg/H1KRuOHZnFNGqE/dIer5puCfzwxUb8VgxeS2H/i YTelgmG4hSJ0OZ7pbEtE4SFU4scEVGocUKzGR7df9UlAXgFtmBbhq7oUGiWI5D5Sz+rs ZkQn2+qZaRQJuQNMbJ1ZgevlGRszYqsqwZBamr2Ka4f367q1w/hJb0pBdpExEyeg4mRQ +jiM8xSaM9vrFhAKapDPG/EY+L5fUKSkKaOZ0/mNdX2HbMBQPjVfaCRKX8VqZGvhkYyq Xdqw== X-RZG-AUTH: ":P2ERcEykfu11Y98lp/T7+hdri+uKZK8TKWEqNyiHySGSa9k9zT8DNpa83PTIZGrithBFZUqsJqaA7gBRM3H/SoCRTjrR5clfHiy/" X-RZG-CLASS-ID: mo00 Received: from tauon.chronox.de by smtp.strato.de (RZmta 43.12 AUTH) with ESMTPSA id t07687u66GR7ItJ (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (curve secp521r1 with 521 ECDH bits, eq. 15360 bits RSA)) (Client did not present a certificate); Fri, 6 Jul 2018 18:27:07 +0200 (CEST) From: Stephan Mueller To: Dmitry Vyukov Cc: syzbot , David Miller , Herbert Xu , "open list:HARDWARE RANDOM NUMBER GENERATOR CORE" , LKML , syzkaller-bugs Subject: Re: KMSAN: uninit-value in af_alg_free_areq_sgls Date: Fri, 06 Jul 2018 18:27:07 +0200 Message-ID: <2936767.s7CfvshsC6@tauon.chronox.de> In-Reply-To: References: <1616306.R4SzcgHSdy@positron.chronox.de> <000000000000363e2e0570502d42@google.com> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Am Freitag, 6. Juli 2018, 10:19:07 CEST schrieb Dmitry Vyukov: Hi Dmitry, > On Fri, Jul 6, 2018 at 10:09 AM, syzbot > > wrote: > > Hello, > > > > syzbot tried to test the proposed patch but build/boot failed: > > > > lost connection to test machine > > Looking into this. syzkaller reported the following which implies that the patch seems to fix the issue. syzbot has tested the proposed patch and the reproducer did not trigger crash: Reported-and-tested-by: syzbot+9c251bdd09f83b92ba95@syzkaller.appspotmail.com Tested on: commit: a00de5aa4da3 kmsan: delete some dead code git tree: https://github.com/google/kmsan.git/master kernel config: https://syzkaller.appspot.com/x/.config?x=b11f4cfb262ee607 compiler: clang version 7.0.0 (trunk 334104) patch: https://syzkaller.appspot.com/x/patch.diff?x=13194968400000 Note: testing is done by a robot and is best-effort only. Ciao Stephan