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=-3.7 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 8E9C7C433DF for ; Thu, 20 Aug 2020 05:36:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 73DEF2072D for ; Thu, 20 Aug 2020 05:36:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726781AbgHTFgV (ORCPT ); Thu, 20 Aug 2020 01:36:21 -0400 Received: from mail-il1-f199.google.com ([209.85.166.199]:40418 "EHLO mail-il1-f199.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725793AbgHTFgU (ORCPT ); Thu, 20 Aug 2020 01:36:20 -0400 Received: by mail-il1-f199.google.com with SMTP id z5so808645ilp.7 for ; Wed, 19 Aug 2020 22:36:19 -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:message-id:subject:from:to; bh=VP5Ce8Ed6CyWY66GPRpBDRkGQBnvvNSVs3ZQbdIJXUw=; b=YrAKSNZEyLsTuT0bRLF6xNkhbggwwhrxhWxveEbj2syTkM9t3EnIMf+Nr5vRhm1AZP 5XZcVHAeuR8ZhsX6TesMGFkPeTrx1CokmwCcIhsf12EKnj4h9MlnPoucq5dEQdfuZ2NI S3ltLMApaXyCgwCslqEaKzKOfTH0wFEsYfWTgpXHGkOob++TXhGvoD4uL+XcdPSTGUKY xpsbX3bRA+OjWu2tJ3eci06T7tOyg3YYD7euMm1ZSQ18++f6dQhnLjksOsWb99VSCP3Z Plrxu7B3n/mim3jq02hX/Cq+Il20tFKxtdQTWG8Q2I91vonRuxxNI3ehuWzd6Sskj520 lVtQ== X-Gm-Message-State: AOAM533P175+mbFg8mPPPZZ45RxCVuP7Q39WF9Tac2VhaaDR4sjC5VQu T9ATgr8Q5dxI55o3Vf4Qt4BvRkdJHhvJFN64iGqJqIhS+rZJ X-Google-Smtp-Source: ABdhPJxlQjwrzXtmuJX27qbcqny62VqqgXhyaT8kUEtnOBXMJwnBcjSwEsrnTyUoABCiwUcGJtzlD12X/Qs1d7Gwf5SCy+jkr7cN MIME-Version: 1.0 X-Received: by 2002:a02:8e:: with SMTP id 136mr1796202jaa.111.1597901779215; Wed, 19 Aug 2020 22:36:19 -0700 (PDT) Date: Wed, 19 Aug 2020 22:36:19 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000efb4c705ad487f5d@google.com> Subject: INFO: task can't die in netdev_run_todo From: syzbot To: davem@davemloft.net, kuba@kernel.org, kuznet@ms2.inr.ac.ru, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com, yoshfuji@linux-ipv6.org Content-Type: text/plain; charset="UTF-8" Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Hello, syzbot found the following issue on: HEAD commit: 4993e4fe Add linux-next specific files for 20200814 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=1181e1a6900000 kernel config: https://syzkaller.appspot.com/x/.config?x=2055bd0d83d5ee16 dashboard link: https://syzkaller.appspot.com/bug?extid=22a310041c3467f85d12 compiler: gcc (GCC) 10.1.0-syz 20200507 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=145b6aa6900000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+22a310041c3467f85d12@syzkaller.appspotmail.com INFO: task syz-executor.1:8005 can't die for more than 143 seconds. syz-executor.1 D25048 8005 1 0x00004004 Call Trace: context_switch kernel/sched/core.c:3778 [inline] __schedule+0x8e5/0x21e0 kernel/sched/core.c:4527 schedule+0xd0/0x2a0 kernel/sched/core.c:4602 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:4661 __mutex_lock_common kernel/locking/mutex.c:1033 [inline] __mutex_lock+0x3e2/0x10e0 kernel/locking/mutex.c:1103 netdev_run_todo+0x705/0xac0 net/core/dev.c:10104 sit_exit_batch_net+0x4ad/0x6c0 net/ipv6/sit.c:1945 --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. syzbot can test patches for this issue, for details see: https://goo.gl/tpsmEJ#testing-patches