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=-8.7 required=3.0 tests=BAYES_00,FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham 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 CB900C433DB for ; Mon, 4 Jan 2021 01:30:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9898F2080D for ; Mon, 4 Jan 2021 01:30:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727660AbhADB35 (ORCPT ); Sun, 3 Jan 2021 20:29:57 -0500 Received: from mail-io1-f70.google.com ([209.85.166.70]:36809 "EHLO mail-io1-f70.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727320AbhADB34 (ORCPT ); Sun, 3 Jan 2021 20:29:56 -0500 Received: by mail-io1-f70.google.com with SMTP id y197so10824431iof.3 for ; Sun, 03 Jan 2021 17:29:40 -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=th/dVrXwJW8+RhtgSSS2uPo04iRhSwP+lsizPzFeJOI=; b=rzoAZjl2RUPRlhafvh706IPnkW/RTrTQSaifrEIY9rf5It9gYsvhAgzSZCzYIGg1zB aJzWcxmAhmfNrpfN0tw7Vu4M/x+xe/Z5q/WyAEEPjYI5mvMRMb0R1jnXmqluSNH5LUi8 mB8/6PXkt09oS9oWf591Qvo3auZmTBhVpz7cQ7jGvwo8+rE0xKltbGoQ6fn1YBZpCbME 8VUZmpovii0RgcP2q+irbIP/KPqoECWFUDlcirAtp0v1NPHBXwWsAxIIwqfi4w3Pn9yQ MhzOBusNTQscsHck6FqrAhfIaitm15VwadQgocpupynwU2K+jq5RCkAXuwBrcopz21bo ywfQ== X-Gm-Message-State: AOAM533yFWx2/yEELY0wiCjiSziXg9pYKzFEPfqUBztQydB9WZC+OAQc KHNCD15Id4+eKfUI258ZDJ0K5TzGAWDFyZjmZ09Xk5A9qXXd X-Google-Smtp-Source: ABdhPJwNaBGAZnJxhGWiGYH5cUf+WefnE2Z+C3ZS9+WWvF7cua6GRFM7au+GDGV4i4FAQRYaQ2HS/p7us3u9RwIm4qKtPdvGWieq MIME-Version: 1.0 X-Received: by 2002:a02:856d:: with SMTP id g100mr60510312jai.10.1609723755142; Sun, 03 Jan 2021 17:29:15 -0800 (PST) Date: Sun, 03 Jan 2021 17:29:15 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000009ca5ae05b80904df@google.com> Subject: WARNING in pwq_unbound_release_workfn From: syzbot To: linux-kernel@vger.kernel.org, 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: f6e1ea19 Merge tag 'ceph-for-5.11-rc2' of git://github.com.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=107ff5ff500000 kernel config: https://syzkaller.appspot.com/x/.config?x=e5a71d05f90e097 dashboard link: https://syzkaller.appspot.com/bug?extid=01c96fb3fff96a6e571f compiler: gcc (GCC) 10.1.0-syz 20200507 userspace arch: i386 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+01c96fb3fff96a6e571f@syzkaller.appspotmail.com ------------[ cut here ]------------ WARNING: CPU: 3 PID: 9370 at kernel/locking/lockdep.c:6113 lockdep_unregister_key+0x191/0x230 kernel/locking/lockdep.c:6113 Modules linked in: CPU: 3 PID: 9370 Comm: kworker/3:3 Not tainted 5.11.0-rc1-syzkaller #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014 Workqueue: events pwq_unbound_release_workfn RIP: 0010:lockdep_unregister_key+0x191/0x230 kernel/locking/lockdep.c:6113 Code: b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 75 7a 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 4d fd ff ff 4c 89 f7 e8 RSP: 0018:ffffc9000335fca8 EFLAGS: 00010046 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 1ffffffff19df003 RDX: 1ffffffff1dcf914 RSI: 0000000000000004 RDI: ffffffff8ee7c8a0 RBP: ffff888028461128 R08: 0000000000000001 R09: 0000000000000003 R10: fffff5200066bf8b R11: 000000000000014e R12: 0000000000000246 R13: dffffc0000000000 R14: ffffffff8ecf5768 R15: ffff888049fec470 FS: 0000000000000000(0000) GS:ffff88802cd00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa82fa09000 CR3: 000000006bb17000 CR4: 0000000000350ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: wq_unregister_lockdep kernel/workqueue.c:3467 [inline] pwq_unbound_release_workfn+0x227/0x2d0 kernel/workqueue.c:3699 process_one_work+0x98d/0x15f0 kernel/workqueue.c:2275 worker_thread+0x64c/0x1120 kernel/workqueue.c:2421 kthread+0x3b1/0x4a0 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296 --- 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.