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=-5.4 required=3.0 tests=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 C3628C432C1 for ; Tue, 24 Sep 2019 12:09:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9882F2168B for ; Tue, 24 Sep 2019 12:09:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729505AbfIXMJK (ORCPT ); Tue, 24 Sep 2019 08:09:10 -0400 Received: from mail-io1-f71.google.com ([209.85.166.71]:39524 "EHLO mail-io1-f71.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727879AbfIXMJJ (ORCPT ); Tue, 24 Sep 2019 08:09:09 -0400 Received: by mail-io1-f71.google.com with SMTP id f9so2718888ioh.6 for ; Tue, 24 Sep 2019 05:09:09 -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:in-reply-to:message-id:subject :from:to; bh=VflEvtMKTJZm6UIwz/EKSbfBYk+H3uv1O+TxeI/B3uk=; b=C/q6TzCuG8gzZCaPc5bBguoWenYTkoPSLTxv94afMp+DTq5IODtc5AdbrZ8utZRx9q eUD2rsNMXRKbXgHtgCSBG4SSZ+S/5UR60nKeO5rqmm+mCIe+u2QTmCRQ+e42ualOM1bN NXjOP7270emrFM0LW0reyzV4bu0/F+CVdOqtLGqw9sKmMHAo7Ajy3HOyilwa8PwKPH1c SZez3BgF4SgCFQy697A7zV9gvvwLWDAqtSxBjdIfyb7Ub5E6mnNa46yEIyi5xPqtLpT8 /Sg9nbMVyFy/svCMtlOK5QTanf6CtxSRqUsHWP+J0HnM396khLd42ePXFTKXblLGbHzk wPEQ== X-Gm-Message-State: APjAAAXlyiHFgzeI5yQIVWZJ0L6kvJVzXZt2P4D61grdOQUykOJAM7Nu 0CVjE12JS2PkMweRupLBkvI0ZCxhH9T/VN8ZE0zNJIg/cEja X-Google-Smtp-Source: APXvYqzi13VJjfpQWgpOcGuMvwJ4sxVipz+oGIsbv8Bc/wpY9IG/EEWEZk4aWWbywpK02aD05umEVVJgUKJJjwKvH7C3ObVqMDuZ MIME-Version: 1.0 X-Received: by 2002:a6b:5a1a:: with SMTP id o26mr2992720iob.65.1569326947244; Tue, 24 Sep 2019 05:09:07 -0700 (PDT) Date: Tue, 24 Sep 2019 05:09:07 -0700 In-Reply-To: <000000000000bd19720591aac025@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000003a22d605934b6722@google.com> Subject: Re: INFO: trying to register non-static key in hci_uart_flush (2) From: syzbot To: johan.hedberg@gmail.com, linux-bluetooth@vger.kernel.org, linux-kernel@vger.kernel.org, marcel@holtmann.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes Sender: linux-bluetooth-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-bluetooth@vger.kernel.org syzbot has found a reproducer for the following crash on: HEAD commit: e94f8ccd Merge tag 'smack-for-5.4-rc1' of git://github.com.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=16713de9600000 kernel config: https://syzkaller.appspot.com/x/.config?x=df38eec565aab18d dashboard link: https://syzkaller.appspot.com/bug?extid=576dfca25381fb6fbc5f compiler: gcc (GCC) 9.0.0 20181231 (experimental) syz repro: https://syzkaller.appspot.com/x/repro.syz?x=12881a9d600000 IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+576dfca25381fb6fbc5f@syzkaller.appspotmail.com INFO: trying to register non-static key. the code is fine but needs lockdep annotation. turning off the locking correctness validator. CPU: 0 PID: 9385 Comm: syz-executor.3 Not tainted 5.3.0+ #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x172/0x1f0 lib/dump_stack.c:113 assign_lock_key kernel/locking/lockdep.c:881 [inline] register_lock_class+0x179e/0x1850 kernel/locking/lockdep.c:1190 __lock_acquire+0xf4/0x4e70 kernel/locking/lockdep.c:3837 lock_acquire+0x190/0x410 kernel/locking/lockdep.c:4487 percpu_down_read include/linux/percpu-rwsem.h:40 [inline] hci_uart_flush+0x110/0x510 drivers/bluetooth/hci_ldisc.c:241 hci_uart_close drivers/bluetooth/hci_ldisc.c:267 [inline] hci_uart_tty_close+0x8e/0x280 drivers/bluetooth/hci_ldisc.c:534 tty_ldisc_close.isra.0+0x119/0x190 drivers/tty/tty_ldisc.c:494 tty_ldisc_kill+0x9c/0x160 drivers/tty/tty_ldisc.c:642 tty_ldisc_release+0xe9/0x2b0 drivers/tty/tty_ldisc.c:814 tty_release_struct+0x1b/0x50 drivers/tty/tty_io.c:1612 tty_release+0xbcb/0xe90 drivers/tty/tty_io.c:1785 __fput+0x2ff/0x890 fs/file_table.c:280 ____fput+0x16/0x20 fs/file_table.c:313 task_work_run+0x145/0x1c0 kernel/task_work.c:113 exit_task_work include/linux/task_work.h:22 [inline] do_exit+0x92f/0x2e50 kernel/exit.c:879 do_group_exit+0x135/0x360 kernel/exit.c:983 get_signal+0x47c/0x2500 kernel/signal.c:2734 do_signal+0x87/0x1700 arch/x86/kernel/signal.c:815 exit_to_usermode_loop+0x286/0x380 arch/x86/entry/common.c:159 prepare_exit_to_usermode arch/x86/entry/common.c:194 [inline] syscall_return_slowpath arch/x86/entry/common.c:274 [inline] do_syscall_64+0x65f/0x760 arch/x86/entry/common.c:300 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x459a09 Code: Bad RIP value. RSP: 002b:00007fe8f55a0c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000459a09 RDX: 0000000000000002 RSI: 00000000400455c8 RDI: 0000000000000006 RBP: 000000000075c118 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe8f55a16d4 R13: 00000000004c26f7 R14: 00000000004d5df8 R15: 00000000ffffffff kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 9385 Comm: syz-executor.3 Not tainted 5.3.0+ #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__wake_up_common+0xdf/0x610 kernel/sched/wait.c:86 Code: 05 00 00 4c 8b 43 38 49 83 e8 18 49 8d 78 18 48 39 7d d0 0f 84 64 02 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 f9 48 c1 e9 03 <80> 3c 01 00 0f 85 0b 05 00 00 49 8b 40 18 89 55 b0 31 db 49 bc 00 RSP: 0018:ffff888097617698 EFLAGS: 00010046 RAX: dffffc0000000000 RBX: ffff88809612eb38 RCX: 0000000000000000 RDX: 0000000000000001 RSI: 1ffffffff138dcf6 RDI: 0000000000000000 RBP: ffff8880976176f0 R08: ffffffffffffffe8 R09: 0000000000000000 R10: ffffed1012ec2ece R11: 0000000000000003 R12: ffff88809612eb80 R13: ffff88809612eb30 R14: 0000000000000000 R15: ffff88809612eb38 FS: 00007fe8f55a1700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000004599df CR3: 000000008ff2c000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __wake_up_locked+0x11/0x20 kernel/sched/wait.c:151 rcu_sync_func+0x16f/0x200 kernel/rcu/sync.c:87 rcu_sync_enter+0x158/0x310 kernel/rcu/sync.c:150 percpu_down_write+0x61/0x437 kernel/locking/percpu-rwsem.c:146 hci_uart_tty_close+0x154/0x280 drivers/bluetooth/hci_ldisc.c:537 tty_ldisc_close.isra.0+0x119/0x190 drivers/tty/tty_ldisc.c:494 tty_ldisc_kill+0x9c/0x160 drivers/tty/tty_ldisc.c:642 tty_ldisc_release+0xe9/0x2b0 drivers/tty/tty_ldisc.c:814 tty_release_struct+0x1b/0x50 drivers/tty/tty_io.c:1612 tty_release+0xbcb/0xe90 drivers/tty/tty_io.c:1785 __fput+0x2ff/0x890 fs/file_table.c:280 ____fput+0x16/0x20 fs/file_table.c:313 task_work_run+0x145/0x1c0 kernel/task_work.c:113 exit_task_work include/linux/task_work.h:22 [inline] do_exit+0x92f/0x2e50 kernel/exit.c:879 do_group_exit+0x135/0x360 kernel/exit.c:983 get_signal+0x47c/0x2500 kernel/signal.c:2734 do_signal+0x87/0x1700 arch/x86/kernel/signal.c:815 exit_to_usermode_loop+0x286/0x380 arch/x86/entry/common.c:159 prepare_exit_to_usermode arch/x86/entry/common.c:194 [inline] syscall_return_slowpath arch/x86/entry/common.c:274 [inline] do_syscall_64+0x65f/0x760 arch/x86/entry/common.c:300 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x459a09 Code: fd b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 cb b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fe8f55a0c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000459a09 RDX: 0000000000000002 RSI: 00000000400455c8 RDI: 0000000000000006 RBP: 000000000075c118 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe8f55a16d4 R13: 00000000004c26f7 R14: 00000000004d5df8 R15: 00000000ffffffff Modules linked in: ---[ end trace cf75381aeb7c112c ]--- RIP: 0010:__wake_up_common+0xdf/0x610 kernel/sched/wait.c:86 Code: 05 00 00 4c 8b 43 38 49 83 e8 18 49 8d 78 18 48 39 7d d0 0f 84 64 02 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 f9 48 c1 e9 03 <80> 3c 01 00 0f 85 0b 05 00 00 49 8b 40 18 89 55 b0 31 db 49 bc 00 RSP: 0018:ffff888097617698 EFLAGS: 00010046 RAX: dffffc0000000000 RBX: ffff88809612eb38 RCX: 0000000000000000 RDX: 0000000000000001 RSI: 1ffffffff138dcf6 RDI: 0000000000000000 RBP: ffff8880976176f0 R08: ffffffffffffffe8 R09: 0000000000000000 R10: ffffed1012ec2ece R11: 0000000000000003 R12: ffff88809612eb80 R13: ffff88809612eb30 R14: 0000000000000000 R15: ffff88809612eb38 FS: 00007fe8f55a1700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000004599df CR3: 000000008ff2c000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400