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=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_2 autolearn=no 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 0180AC2D0D2 for ; Sat, 21 Dec 2019 01:38:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id CC24220CC7 for ; Sat, 21 Dec 2019 01:38:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726705AbfLUBiv (ORCPT ); Fri, 20 Dec 2019 20:38:51 -0500 Received: from mail.kernel.org ([198.145.29.99]:50140 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726598AbfLUBiv (ORCPT ); Fri, 20 Dec 2019 20:38:51 -0500 Received: from rorschach.local.home (cpe-66-24-58-225.stny.res.rr.com [66.24.58.225]) (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 69EEF20716; Sat, 21 Dec 2019 01:38:49 +0000 (UTC) Date: Fri, 20 Dec 2019 20:38:47 -0500 From: Steven Rostedt To: syzbot Cc: akpm@linux-foundation.org, glider@google.com, hpa@zytor.com, jpoimboe@redhat.com, keescook@chromium.org, linux-kernel@vger.kernel.org, mbenes@suse.cz, mhiramat@kernel.org, mingo@redhat.com, netdev@vger.kernel.org, rppt@linux.ibm.com, syzkaller-bugs@googlegroups.com, tglx@linutronix.de, x86@kernel.org Subject: Re: KASAN: stack-out-of-bounds Read in update_stack_state Message-ID: <20191220203847.08267447@rorschach.local.home> In-Reply-To: <000000000000a3c3ef059a1e4260@google.com> References: <001a1143e62e6f71d20565bf329f@google.com> <000000000000a3c3ef059a1e4260@google.com> X-Mailer: Claws Mail 3.17.4git76 (GTK+ 2.24.32; x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org What's the actual bug? "stack-out-of-bounds" is rather useless without any actual output dump. But that's besides the point, this commit is *extremely* unlikely to be the culprit. -- Steve On Fri, 20 Dec 2019 00:14:01 -0800 syzbot wrote: > syzbot suspects this bug was fixed by commit: > > commit 4ee7c60de83ac01fa4c33c55937357601631e8ad > Author: Steven Rostedt (VMware) > Date: Fri Mar 23 14:18:03 2018 +0000 > > init, tracing: Add initcall trace events > > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=11ebd0aee00000 > start commit: 0b6b8a3d Merge branch 'bpf-misc-selftest-improvements' > git tree: bpf-next > kernel config: https://syzkaller.appspot.com/x/.config?x=82a189bf69e089b5 > dashboard link: https://syzkaller.appspot.com/bug?extid=2990ca6e76c080858a9c > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=11dde5b3800000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1347b65d800000 > > If the result looks correct, please mark the bug fixed by replying with: > > #syz fix: init, tracing: Add initcall trace events > > For information about bisection process see: https://goo.gl/tpsmEJ#bisection