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=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 94437C433FF for ; Wed, 31 Jul 2019 14:30:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7261120679 for ; Wed, 31 Jul 2019 14:30:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729282AbfGaOa6 (ORCPT ); Wed, 31 Jul 2019 10:30:58 -0400 Received: from mx1.redhat.com ([209.132.183.28]:50112 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727089AbfGaOa5 (ORCPT ); Wed, 31 Jul 2019 10:30:57 -0400 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 5DECD81F22; Wed, 31 Jul 2019 14:30:57 +0000 (UTC) Received: from warthog.procyon.org.uk (ovpn-120-255.rdu2.redhat.com [10.10.120.255]) by smtp.corp.redhat.com (Postfix) with ESMTP id A16501001B07; Wed, 31 Jul 2019 14:30:55 +0000 (UTC) Organization: Red Hat UK Ltd. Registered Address: Red Hat UK Ltd, Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SI4 1TE, United Kingdom. Registered in England and Wales under Company Registration No. 3798903 From: David Howells In-Reply-To: References: <0000000000004c2416058c594b30@google.com> <24282.1562074644@warthog.procyon.org.uk> To: Dmitry Vyukov Cc: dhowells@redhat.com, syzbot , Eric Biggers , David Miller , linux-afs@lists.infradead.org, LKML , netdev , syzkaller-bugs Subject: Re: kernel BUG at net/rxrpc/local_object.c:LINE! MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-ID: <20329.1564583454.1@warthog.procyon.org.uk> Date: Wed, 31 Jul 2019 15:30:54 +0100 Message-ID: <20330.1564583454@warthog.procyon.org.uk> X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.25]); Wed, 31 Jul 2019 14:30:57 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Dmitry Vyukov wrote: > Re bisection, I don't know if there are some more subtle things as > play (you are in the better position to judge that), but bisection log > looks good, it tracked the target crash throughout and wasn't > distracted by any unrelated bugs, etc. So I don't see any obvious > reasons to not trust it. Can you turn on: echo 1 > /sys/kernel/debug/tracing/events/rxrpc/rxrpc_local/enable and capture the trace log at the point it crashes? David