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 1836EC07E9D for ; Tue, 20 Jul 2021 01:33:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0423561166 for ; Tue, 20 Jul 2021 01:33:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237947AbhGTAw0 (ORCPT ); Mon, 19 Jul 2021 20:52:26 -0400 Received: from mail-il1-f199.google.com ([209.85.166.199]:39834 "EHLO mail-il1-f199.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1379599AbhGTAP3 (ORCPT ); Mon, 19 Jul 2021 20:15:29 -0400 Received: by mail-il1-f199.google.com with SMTP id o8-20020a92c6880000b0290214927ba4d8so7153409ilg.6 for ; Mon, 19 Jul 2021 17:55:21 -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=DahNEueMdXzD/TbootP2xlB++bWqnxgrOSnxxyUIBoM=; b=oXQNXPE9K6FgqEK0GeC+cAGis6IGJMcc+DBSeK8KO5L0Aoyd4/E02lbAa8+dd42EF8 0hLtlIY5zpKCC4t0xLhzPYR6sndodcQDZRgqLPoj/XghA7xF9oBq9wzJmqEUnfWyqIMn YtCg5gI7l6EIpsJ1I7dm5C9VY7OQBN61mYU2bjteZGARwy+lsQZaba+IzsxIcjpaqolg vCnFZp9/GV+zl1MQz6iQDDKeHZncSsfrnL6faHsMN/5+KrXM8PA/9CNPkGO/Go83sY1A TDrLCgAz0g4CH8Ewp6jM6MIQYglXDxCRfc95BhR9oH9h2jle1RZqLmmxVzWoijapEToQ Dwbg== X-Gm-Message-State: AOAM531bpsrQaOJJi433DIpYU8kP6kMCGdk3kran6zBen3OJRcBo0uA0 D4N8fH/SCSRf9fHtd6WiP94a75M4rGTavL+6zXNnNjL6h+H3 X-Google-Smtp-Source: ABdhPJw8fCIkkMwZxm4OwCd1ZfS9Ki9oE9tDLDBGryXCgqz38G2jxHec4aYFzsHawrGtr+hDg+/ouAfcPwdLaUKxvgKL00u4+/oq MIME-Version: 1.0 X-Received: by 2002:a6b:fe03:: with SMTP id x3mr1460958ioh.120.1626742520659; Mon, 19 Jul 2021 17:55:20 -0700 (PDT) Date: Mon, 19 Jul 2021 17:55:20 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000015c36505c78382e0@google.com> Subject: [syzbot] WARNING in pwq_unbound_release_workfn (2) From: syzbot To: boqun.feng@gmail.com, linux-kernel@vger.kernel.org, longman@redhat.com, mingo@redhat.com, peterz@infradead.org, syzkaller-bugs@googlegroups.com, will@kernel.org Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, syzbot found the following issue on: HEAD commit: 2734d6c1b1a0 Linux 5.14-rc2 git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=1518d3bc300000 kernel config: https://syzkaller.appspot.com/x/.config?x=f7dfeb6dfc05ea19 dashboard link: https://syzkaller.appspot.com/bug?extid=d04950c1e97f51d0068a Unfortunately, I don't have any reproducer for this issue yet. IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+d04950c1e97f51d0068a@syzkaller.appspotmail.com ------------[ cut here ]------------ WARNING: CPU: 3 PID: 32 at kernel/locking/lockdep.c:6305 lockdep_unregister_key+0x19a/0x250 kernel/locking/lockdep.c:6305 Modules linked in: CPU: 3 PID: 32 Comm: kworker/3:0 Not tainted 5.14.0-rc2-syzkaller #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014 Workqueue: events pwq_unbound_release_workfn RIP: 0010:lockdep_unregister_key+0x19a/0x250 kernel/locking/lockdep.c:6305 Code: 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 8f 00 00 00 4d 89 7d 08 48 b8 22 01 00 00 00 00 ad de 48 89 43 08 eb 02 <0f> 0b 4c 89 f7 ba 01 00 00 00 48 89 ee e8 44 fd ff ff 4c 89 f7 e8 RSP: 0018:ffffc900007bfcb0 EFLAGS: 00010046 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffffffff1ad87cd RDX: 1ffffffff1fcad55 RSI: 0000000000000004 RDI: ffffffff8fe56aa8 RBP: ffff88801416e928 R08: 0000000000000001 R09: 0000000000000003 R10: fffff520000f7f8c R11: 0000000000086088 R12: 0000000000000246 R13: dffffc0000000000 R14: ffffffff8fcd1868 R15: ffff888047033870 FS: 0000000000000000(0000) GS:ffff88802cd00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000014a53ad CR3: 00000000479f1000 CR4: 0000000000150ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: wq_unregister_lockdep kernel/workqueue.c:3468 [inline] pwq_unbound_release_workfn+0x223/0x2d0 kernel/workqueue.c:3700 process_one_work+0x98d/0x1630 kernel/workqueue.c:2276 worker_thread+0x658/0x11f0 kernel/workqueue.c:2422 kthread+0x3e5/0x4d0 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 --- 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.