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_PASS,URIBL_BLOCKED,USER_AGENT_MUTT autolearn=unavailable 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 C8123C43381 for ; Wed, 20 Mar 2019 13:20:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A1CF12184E for ; Wed, 20 Mar 2019 13:20:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728140AbfCTNUs (ORCPT ); Wed, 20 Mar 2019 09:20:48 -0400 Received: from mx1.redhat.com ([209.132.183.28]:57818 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727902AbfCTNSq (ORCPT ); Wed, 20 Mar 2019 09:18:46 -0400 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 9146031688FC; Wed, 20 Mar 2019 13:18:46 +0000 (UTC) Received: from dhcp-27-174.brq.redhat.com (unknown [10.43.17.34]) by smtp.corp.redhat.com (Postfix) with SMTP id 6AC1D5D9CD; Wed, 20 Mar 2019 13:18:44 +0000 (UTC) Received: by dhcp-27-174.brq.redhat.com (nbSMTP-1.00) for uid 1000 oleg@redhat.com; Wed, 20 Mar 2019 14:18:45 +0100 (CET) Date: Wed, 20 Mar 2019 14:18:42 +0100 From: Oleg Nesterov To: syzbot Cc: chanho.min@lge.com, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, mhocko@suse.com, pavel@ucw.cz, rafael.j.wysocki@intel.com, syzkaller-bugs@googlegroups.com, viro@zeniv.linux.org.uk Subject: Re: WARNING: syz-executor still has locks held! Message-ID: <20190320131842.GA21673@redhat.com> References: <0000000000000e4a41057b6c9792@google.com> <0000000000004cdec6058485b2ce@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <0000000000004cdec6058485b2ce@google.com> User-Agent: Mutt/1.5.24 (2015-08-30) X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.41]); Wed, 20 Mar 2019 13:18:46 +0000 (UTC) Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org On 03/20, syzbot wrote: > > syzbot has bisected this bug to: > > commit c22397888f1eed98cd59f0a88f2a5f6925f80e15 > Author: Chanho Min > Date: Mon Nov 12 03:54:45 2018 +0000 > > exec: make de_thread() freezable > > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=14ee6217200000 > start commit: c2239788 exec: make de_thread() freezable > git tree: upstream Yes, this patch was wrong, but it was reverted by a72173ecfc6774cf2d55de9fb2 (Revert "exec: make de_thread() freezable") > final crash: https://syzkaller.appspot.com/x/report.txt?x=16ee6217200000 > console output: https://syzkaller.appspot.com/x/log.txt?x=12ee6217200000 > kernel config: https://syzkaller.appspot.com/x/.config?x=73e2bc0cb6463446 > dashboard link: https://syzkaller.appspot.com/bug?extid=b70f2aabc707c69c9239 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=16c9e26d400000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=14e1234d400000 > > Reported-by: syzbot+b70f2aabc707c69c9239@syzkaller.appspotmail.com > Fixes: c2239788 ("exec: make de_thread() freezable")