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, URIBL_BLOCKED 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 1C782C4361B for ; Fri, 11 Dec 2020 10:05:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BCBB823CD3 for ; Fri, 11 Dec 2020 10:05:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2405743AbgLKKEW (ORCPT ); Fri, 11 Dec 2020 05:04:22 -0500 Received: from mail-il1-f197.google.com ([209.85.166.197]:40301 "EHLO mail-il1-f197.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732317AbgLKKDv (ORCPT ); Fri, 11 Dec 2020 05:03:51 -0500 Received: by mail-il1-f197.google.com with SMTP id g1so1030463ilq.7 for ; Fri, 11 Dec 2020 02:03:36 -0800 (PST) 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=uOC2+82+GbEMhFKOFJV1ZRw6jqNsv44LU405Nk29/vk=; b=HcWYmjCCsEhGMqLDv/ty/MZLSqVJiIYVzUq9bB+jPWBLrASTN2CFDUpEKbIwMYj+fc UI4yDG5653y45EEL/5rk8XU1fAfQZMWAqUigjz1nRX05EgQJm7xHOsBpyX4re/PcyKf2 obeCkQEP6DrG97wOXigdDv2hL4V15IoHaC78lpujF51Ck5SlIWgS0qXVh8G24JLhSDj7 lKiWVaE3qIukzrHxaYdq33DPniN2tKmcPKtp1fWhQaaxQJxZ8+onMVJxT/ZaqjNRx8zd SNDfEJ4M/6KM4AsipSNv8uxyMwGGKRoA3HT9sUDRklKKoobHBA/5TB63wxQldsCNjJbt Q8LA== X-Gm-Message-State: AOAM531UvmRc72CMba6i2jG5cvGznZEeqEtoe7W7HFjYaCMoEsw8Z/95 1GHhWp8b7mXarnKlApujk1I6gUphSPuFGvJa5Mzu1a4vX5o1 X-Google-Smtp-Source: ABdhPJyS9DPn9X/pqrU8UkmwJ2EG8zRVVPeG0gsGgP4jnW3RkTWJeILitrISDAiZc4KnI2auNRcRwBuwBGR7H1fBTu+lcx2uvthc MIME-Version: 1.0 X-Received: by 2002:a05:6e02:5ab:: with SMTP id k11mr8236476ils.189.1607680990586; Fri, 11 Dec 2020 02:03:10 -0800 (PST) Date: Fri, 11 Dec 2020 02:03:10 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000005b303e05b62d6674@google.com> Subject: INFO: task can't die in corrupted (2) From: syzbot To: ast@kernel.org, christian.brauner@ubuntu.com, daniel@iogearbox.net, davem@davemloft.net, gnault@redhat.com, kuba@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Hello, syzbot found the following issue on: HEAD commit: 0eedceaf Add linux-next specific files for 20201201 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=12db3b4b500000 kernel config: https://syzkaller.appspot.com/x/.config?x=55aec7153b7827ea dashboard link: https://syzkaller.appspot.com/bug?extid=61cb1d04bf13f0c631b1 compiler: gcc (GCC) 10.1.0-syz 20200507 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17985545500000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+61cb1d04bf13f0c631b1@syzkaller.appspotmail.com INFO: task syz-executor.0:9776 can't die for more than 143 seconds. task:syz-executor.0 state:R running task stack:25800 pid: 9776 ppid: 8572 flags:0x00004006 Call Trace: context_switch kernel/sched/core.c:4325 [inline] __schedule+0x8cd/0x2150 kernel/sched/core.c:5076 Showing all locks held in the system: 4 locks held by kworker/u4:4/359: #0: ffff8881407ab138 ((wq_completion)netns){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff8881407ab138 ((wq_completion)netns){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:856 [inline] #0: ffff8881407ab138 ((wq_completion)netns){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline] #0: ffff8881407ab138 ((wq_completion)netns){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:616 [inline] #0: ffff8881407ab138 ((wq_completion)netns){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:643 [inline] #0: ffff8881407ab138 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x871/0x15f0 kernel/workqueue.c:2243 #1: ffffc900014efda8 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x8a5/0x15f0 kernel/workqueue.c:2247 #2: ffffffff8c92ed90 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x9b/0xb10 net/core/net_namespace.c:566 #3: ffffffff8c940f88 (rtnl_mutex){+.+.}-{3:3}, at: netdev_run_todo+0x90a/0xdd0 net/core/dev.c:10316 1 lock held by khungtaskd/1663: #0: ffffffff8b33a7a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6254 1 lock held by in:imklog/8233: #0: ffff88801f67e370 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:923 3 locks held by kworker/0:2/8537: #0: ffff888010062d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888010062d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:856 [inline] #0: ffff888010062d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline] #0: ffff888010062d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:616 [inline] #0: ffff888010062d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:643 [inline] #0: ffff888010062d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x871/0x15f0 kernel/workqueue.c:2243 #1: ffffc9000c297da8 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x8a5/0x15f0 kernel/workqueue.c:2247 #2: ffffffff8c940f88 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0xb/0x60 net/core/link_watch.c:250 2 locks held by kworker/u4:3/9739: 1 lock held by syz-executor.1/9765: 1 lock held by syz-executor.0/9776: 1 lock held by syz-executor.3/10296: 1 lock held by syz-executor.5/10299: 4 locks held by syz-executor.4/10323: 4 locks held by syz-executor.2/10542: ============================================= --- 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