Received: by 2002:ac0:950e:0:0:0:0:0 with SMTP id f14csp564315imc; Sat, 16 Mar 2019 08:53:56 -0700 (PDT) X-Google-Smtp-Source: APXvYqwyGziRmqMFkIpXzgXmris3BXrkhEAYSTjoueHWZYx4YumNjJXA7q8pSqQrxqnzL0OTuZNv X-Received: by 2002:aa7:8186:: with SMTP id g6mr10055668pfi.138.1552751636151; Sat, 16 Mar 2019 08:53:56 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1552751636; cv=none; d=google.com; s=arc-20160816; b=s4l0AfLHVmMnuCMlmIWnRS10HtV20cVPSeZrlSLuUeR45EB5ev2+HiH6o9qcuf22kN KWdSiV6IikBGL0eyIGgQ/nDMZN1c3GLMiTTlc/26UnEjv7S/J05q5LUsy6CQmnlVHluy g5RT0ds1pqKckmnrzXSAtuAvjyq5uYt4uM7wMqDifAmb+xTOM1/nbNyX+hidAxAJS0Vx F/GBxdCgGUuXY8RY7H2ZS05y0hb8iGNHB+seCL292PpZ/CAIIDCa9ps3jPDGMZuPIzt0 V+Mbal6HHhcSuF0a5ZCTgQ9ApK7vUqOv9NV0eAYB66qyJ959Os45C9WwDSP8aM6Uy0Ue DXzQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding:mime-version :organization:references:in-reply-to:message-id:subject:cc:to:from :date; bh=5JYPPn1RwTMRJlAAkGVul3QF/uBXkPYmGRkCjZoHRE8=; b=ql6biV/M7fqlOCsjk60765eU09CqAzhb+i0CRpY1ZL6+amDOgDSd4L5KO6hajlENlq abl5fZ7AcyLO2Ra+34M7ezmF/V5B4SQ9SqKkYZuHhzqmoSo+xYB7ts8OaRSgnUVA/szM x6ehd4Ta8QDJpnSkc7rX6ygWwdL/JvahO0vmQMOUeklyKjCEmibxnKes+dW/33PnISe1 My3q4355OxPs+P5NNk5c63SV0dB+Yor6lvUCLvjjP00ib+lSZDaqN619YFmT+t9DUYyx JQUdfpj+pOtDQ2D8P93SmdD9NJTXXBXecVTTj8kdhfs5bF6w2EpnPv4PTDSGoxBos7y4 nMew== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=redhat.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id a4si4678053plp.431.2019.03.16.08.53.40; Sat, 16 Mar 2019 08:53:56 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=redhat.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727131AbfCPPxD (ORCPT + 99 others); Sat, 16 Mar 2019 11:53:03 -0400 Received: from mx1.redhat.com ([209.132.183.28]:33098 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726435AbfCPPxD (ORCPT ); Sat, 16 Mar 2019 11:53:03 -0400 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 5963159449; Sat, 16 Mar 2019 15:53:02 +0000 (UTC) Received: from elisabeth (ovpn-200-27.brq.redhat.com [10.40.200.27]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 5CEC84385; Sat, 16 Mar 2019 15:52:53 +0000 (UTC) Date: Sat, 16 Mar 2019 16:52:41 +0100 From: Stefano Brivio To: syzbot Cc: davem@davemloft.net, fweisbec@gmail.com, kuznet@ms2.inr.ac.ru, linux-kernel@vger.kernel.org, mingo@kernel.org, netdev@vger.kernel.org, sd@queasysnail.net, syzkaller-bugs@googlegroups.com, tglx@linutronix.de, yoshfuji@linux-ipv6.org, Eric Dumazet Subject: Re: KASAN: slab-out-of-bounds Read in tick_sched_handle Message-ID: <20190316165241.2855f966@elisabeth> In-Reply-To: <00000000000093e58e0584374110@google.com> References: <000000000000551b80057d31a5f7@google.com> <00000000000093e58e0584374110@google.com> Organization: Red Hat MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.39]); Sat, 16 Mar 2019 15:53:03 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat, 16 Mar 2019 07:49:01 -0700 syzbot wrote: > syzbot has bisected this bug to: > > commit b8a51b38e4d4dec3e379d52c0fe1a66827f7cf1e > Author: Stefano Brivio > Date: Thu Nov 8 11:19:23 2018 +0000 > > fou, fou6: ICMP error handlers for FoU and GUE > > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=16f943e7200000 > start commit: b8a51b38 fou, fou6: ICMP error handlers for FoU and GUE > git tree: upstream > final crash: https://syzkaller.appspot.com/x/report.txt?x=15f943e7200000 > console output: https://syzkaller.appspot.com/x/log.txt?x=11f943e7200000 > kernel config: https://syzkaller.appspot.com/x/.config?x=b05cfdb4ee8ab9b2 > dashboard link: https://syzkaller.appspot.com/bug?extid=09d51a30df9fe76edb2a > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17359fab400000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=154a2a37400000 > > Reported-by: syzbot+09d51a30df9fe76edb2a@syzkaller.appspotmail.com > Fixes: b8a51b38 ("fou, fou6: ICMP error handlers for FoU and GUE") Might be fixed by bc6e019b6ee6 ("fou: Prevent unbounded recursion in GUE error handler also with UDP-Lite"), testing/checking now. -- Stefano