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=-2.5 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 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 85FF4C433DF for ; Mon, 29 Jun 2020 21:22:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6D3E92186A for ; Mon, 29 Jun 2020 21:22:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2390978AbgF2VWt (ORCPT ); Mon, 29 Jun 2020 17:22:49 -0400 Received: from mx2.suse.de ([195.135.220.15]:44780 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729605AbgF2Sv2 (ORCPT ); Mon, 29 Jun 2020 14:51:28 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 3BCBFAE2B; Mon, 29 Jun 2020 18:20:14 +0000 (UTC) Received: by quack2.suse.cz (Postfix, from userid 1000) id 190461E12E7; Mon, 29 Jun 2020 20:20:14 +0200 (CEST) Date: Mon, 29 Jun 2020 20:20:14 +0200 From: Jan Kara To: =?iso-8859-1?Q?J=F6rg?= Otte Cc: Mel Gorman , Jan Kara , Linus Torvalds , Linux Kernel Mailing List Subject: Re: segmentation faults with kernels >v5.8-rc2 Message-ID: <20200629182014.GJ26507@quack2.suse.cz> References: MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello! On Mon 29-06-20 15:58:50, Jörg Otte wrote: > I frequently get segmentation faults in newer kernel >v5.8-rc2 e.g. > Chrome_ChildIOT[1298]: segfault at 40d048 ip 000056111a41970d sp > 00007fdced6931b0 error 6 in chrome[561115f64000+785b000] > > Bisection gave me the following > first bad commit: > > e9c15badbb7b20ccdbadf5da14e0a68fbad51015 is the first bad commit > commit e9c15badbb7b20ccdbadf5da14e0a68fbad51015 > Author: Mel Gorman > Date: Mon Jun 15 13:13:58 2020 +0100 > > fs: Do not check if there is a fsnotify watcher on pseudo inodes > ... > > I double checked by reverting this commit on top of v5.8-rc3 and the > segmentation faults are gone. We've already reverted that commit today... Thanks for report! Honza -- Jan Kara SUSE Labs, CR