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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3EEE2C433EF for ; Sun, 24 Jul 2022 13:17:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233943AbiGXNRT (ORCPT ); Sun, 24 Jul 2022 09:17:19 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36996 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231475AbiGXNRS (ORCPT ); Sun, 24 Jul 2022 09:17:18 -0400 Received: from mail-il1-f198.google.com (mail-il1-f198.google.com [209.85.166.198]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 851F0E097 for ; Sun, 24 Jul 2022 06:17:17 -0700 (PDT) Received: by mail-il1-f198.google.com with SMTP id g8-20020a92cda8000000b002dcbd57f808so5728771ild.4 for ; Sun, 24 Jul 2022 06:17:17 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:date:in-reply-to:message-id:subject :from:to; bh=hjEUNMgdvQs7+SQfFq8IM6gLNyCL0JlcuMD7/mHIX5A=; b=jJ9gs2hd+n8MHg6FGW7J/FvbsgBWY7slpzkqfipYJP+8xlve9aIkjO/yBdYXJD0XuL cUBPsFajOiz3FHacpzEvL7eHaxt8495k0gqV0jOnvEyg8MYHuBBZzMjlpI87d089ECgj j6cVaak441Bf96Kyj+wnBdBcG/KYxnFpJuAIqMqnhzLicp4asHWhGDJPLiaW69Y5lkfW bGq29B96+Q1VW4PVud1vjE3AlWaPe62qC4HmDi3HZysviQFzKrjJcToDULrNQPu8uwww gAL/ZZhOQG87pKyydrQIaHhd4esX5cIVqUb0SUpBFlIOqbtH0MnrL2+opb1c2/GMpDk7 ytew== X-Gm-Message-State: AJIora878V3f1erZ435VwIX/MCecJVTPUcxdXVp/hl5KuWAHyhvgmke/ rmXYn/lxuMTD7r3t7gsbVsty6/BSzI43KGQchv/Psngpk2u0 X-Google-Smtp-Source: AGRyM1u73sB/d40+FJtdvxjS5zQsJTrRiTiu0Z8RQGmxOnP1tvrQ7TjhLqZC76uGpi9cdO/lQahHFSbrR4hSNom7Q5/LF/pUMjbT MIME-Version: 1.0 X-Received: by 2002:a05:6e02:1c45:b0:2dc:dc24:c103 with SMTP id d5-20020a056e021c4500b002dcdc24c103mr3199320ilg.132.1658668636866; Sun, 24 Jul 2022 06:17:16 -0700 (PDT) Date: Sun, 24 Jul 2022 06:17:16 -0700 In-Reply-To: <00000000000011f0c905d9097a62@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000e6917605e48ce2bf@google.com> Subject: Re: [syzbot] WARNING in p9_client_destroy From: syzbot To: akpm@linux-foundation.org, asmadeus@codewreck.org, davem@davemloft.net, edumazet@google.com, elver@google.com, ericvh@gmail.com, hdanton@sina.com, k.kahurani@gmail.com, kuba@kernel.org, linux-kernel@vger.kernel.org, linux_oss@crudebyte.com, lucho@ionkov.net, netdev@vger.kernel.org, pabeni@redhat.com, rientjes@google.com, syzkaller-bugs@googlegroups.com, torvalds@linux-foundation.org, v9fs-developer@lists.sourceforge.net, vbabka@suse.cz Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org syzbot has bisected this issue to: commit 7302e91f39a81a9c2efcf4bc5749d18128366945 Author: Marco Elver Date: Fri Jan 14 22:03:58 2022 +0000 mm/slab_common: use WARN() if cache still has objects on destroy bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=142882ce080000 start commit: cb71b93c2dc3 Add linux-next specific files for 20220628 git tree: linux-next final oops: https://syzkaller.appspot.com/x/report.txt?x=162882ce080000 console output: https://syzkaller.appspot.com/x/log.txt?x=122882ce080000 kernel config: https://syzkaller.appspot.com/x/.config?x=badbc1adb2d582eb dashboard link: https://syzkaller.appspot.com/bug?extid=5e28cdb7ebd0f2389ca4 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=156f74ee080000 Reported-by: syzbot+5e28cdb7ebd0f2389ca4@syzkaller.appspotmail.com Fixes: 7302e91f39a8 ("mm/slab_common: use WARN() if cache still has objects on destroy") For information about bisection process see: https://goo.gl/tpsmEJ#bisection