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=-4.0 required=3.0 tests=BAYES_00,FROM_LOCAL_HEX, 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 7FF36C433DF for ; Wed, 15 Jul 2020 10:04:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6217F206F4 for ; Wed, 15 Jul 2020 10:04:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730987AbgGOKEG (ORCPT ); Wed, 15 Jul 2020 06:04:06 -0400 Received: from mail-il1-f198.google.com ([209.85.166.198]:40320 "EHLO mail-il1-f198.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726023AbgGOKEF (ORCPT ); Wed, 15 Jul 2020 06:04:05 -0400 Received: by mail-il1-f198.google.com with SMTP id z16so1034575ill.7 for ; Wed, 15 Jul 2020 03:04:04 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:date:in-reply-to:message-id:subject :from:to; bh=lZUjqSiBJwDYPm36WdPBclDG5mrQQmRv25qcSv9nR2k=; b=WJHUusYBbACk3i29yrWFCeiGO2SXxKs3AixwNb51v4RjQnOcrj5a0Slu0OrWTQn8W2 BQufMWqqm4KNekdYtb7CxME8usrqFF2TRaqo92p+JRgu77o8oVaYBsL4KpBlcTO+qOQ0 gT5zeLcj5hOEXU8PqLsa9ZHcdpl76HiaboTaG43XW01JmaInzVtwpCtHUsRIFrvi8311 dkBjFR9kfXn4HzbWRnTITyhLn5Y9WWnzptNUQjqGdOO1FPmYp3M/VYgAuWSSZaiTgUIJ h+zO1RIMQ8A044d6UZGGnaUOFiWhm6M/rVnd5y/BeIrZ6EHWw1XepWU/Mtuvmr+S8IiJ 8X3A== X-Gm-Message-State: AOAM530m19I4XPp0aSKi8L1Plt49qGUCgUt+eBL7283OBgxF8hTR8la7 CXmoko+rrhRaABwghfJTi0dsdz76uJoTeVb8LuiyTZv08YVf X-Google-Smtp-Source: ABdhPJyycIp0AkfnugimTuwXQFSQQrRqDsnXwJhn4PoiwmUZVLf3foo73PthW2MSKGMpHMirmBnKlHZU4uzD7gjkdcVFSe3C9xDx MIME-Version: 1.0 X-Received: by 2002:a92:7309:: with SMTP id o9mr8619036ilc.5.1594807444150; Wed, 15 Jul 2020 03:04:04 -0700 (PDT) Date: Wed, 15 Jul 2020 03:04:04 -0700 In-Reply-To: <000000000000e6807f05aa4608b7@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000031a14405aa780bdb@google.com> Subject: Re: WARNING in kthread_queue_work From: syzbot To: akpm@linux-foundation.org, axboe@kernel.dk, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, pmladek@suse.com, qiang.zhang@windriver.com, sfr@canb.auug.org.au, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org syzbot has bisected this issue to: commit 4977caef05aa154f5e45a232fc4f0e1c74a0c739 Author: Zhang Qiang Date: Tue Jul 7 02:29:47 2020 +0000 kthread: work could not be queued when worker being destroyed bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=12c58f57100000 start commit: 89032636 Add linux-next specific files for 20200708 git tree: linux-next final oops: https://syzkaller.appspot.com/x/report.txt?x=11c58f57100000 console output: https://syzkaller.appspot.com/x/log.txt?x=16c58f57100000 kernel config: https://syzkaller.appspot.com/x/.config?x=64a250ebabc6c320 dashboard link: https://syzkaller.appspot.com/bug?extid=fa64e680a1ff32087778 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=16bf9f2f100000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=118380ed100000 Reported-by: syzbot+fa64e680a1ff32087778@syzkaller.appspotmail.com Fixes: 4977caef05aa ("kthread: work could not be queued when worker being destroyed") For information about bisection process see: https://goo.gl/tpsmEJ#bisection