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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3885FC433F5 for ; Sat, 4 Dec 2021 09:19:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1384467AbhLDJWz (ORCPT ); Sat, 4 Dec 2021 04:22:55 -0500 Received: from mail-il1-f198.google.com ([209.85.166.198]:39571 "EHLO mail-il1-f198.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1354863AbhLDJWu (ORCPT ); Sat, 4 Dec 2021 04:22:50 -0500 Received: by mail-il1-f198.google.com with SMTP id d3-20020a056e021c4300b002a23bcd5ee7so3651568ilg.6 for ; Sat, 04 Dec 2021 01:19:25 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:date:message-id:subject:from:to; bh=YLnHcb4u/Rbh+CEAOHev0nwUvyI4FI+70xSJiBr2up0=; b=McWdDFXfu3xi/5X0Y1dTSNPgtumY2mLLXHV4o/oDuZZ9MyuOF3qLJp0YGm/IM16z3A altqWFpb1JvTeFav+RP7NDaJsMluip/I5meytgSp9tiCSBZXVee/LFuyYU/NmWuuTYJb VzU4W+kT52aI/JfGNFQN65H/7MMAeC1RBxFrvqIwK3CkHBJQ2jSO7vnTOjkaAl+9JiYQ oMLgJOc6xyC8iBdYtsOCoh+Wz0bjhbnWZy/R4RjSzvLShki117PNOwdpsva7gBUYZQ63 sKsz1f1uM/dC9AdNrO5tHB8iYtUwaHc8A605HrbRnRMFFCNMUvFmNiENuTw3DIQUTGJx 1SNQ== X-Gm-Message-State: AOAM533KiJsm2p84QFaw2/yyMKvC5leVmP6F/LobtWxzya22m64WFgjk IvLFAfErTmpjd4Og8zLuOdX3bANvikDStlvQfyiE+0H8GTO8 X-Google-Smtp-Source: ABdhPJyz8Nn/75pCswmwvFmWYk2DkjipATdABkX8lZ6OzsFgcoD88eXtLlBVd/11rki5AQYMU1AR/dFo/CswyF4RcOtkSl0zWmBL MIME-Version: 1.0 X-Received: by 2002:a92:d992:: with SMTP id r18mr23049436iln.224.1638609565033; Sat, 04 Dec 2021 01:19:25 -0800 (PST) Date: Sat, 04 Dec 2021 01:19:25 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000000ca79b05d24e85fd@google.com> Subject: [syzbot] WARNING: ODEBUG bug in cancel_delayed_work (2) From: syzbot To: davem@davemloft.net, johan.hedberg@gmail.com, kuba@kernel.org, linux-bluetooth@vger.kernel.org, linux-kernel@vger.kernel.org, luiz.dentz@gmail.com, marcel@holtmann.org, netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com 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: 3498e7f2bb41 Merge tag '5.16-rc2-ksmbd-fixes' of git://git.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=14fcfb5eb00000 kernel config: https://syzkaller.appspot.com/x/.config?x=21797a5d93964cce dashboard link: https://syzkaller.appspot.com/bug?extid=4b140c35e652626b77ba compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 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+4b140c35e652626b77ba@syzkaller.appspotmail.com WARNING: CPU: 2 PID: 13842 at lib/debugobjects.c:505 debug_print_object+0x16e/0x250 lib/debugobjects.c:505 Modules linked in: CPU: 2 PID: 13842 Comm: syz-executor.1 Not tainted 5.16.0-rc2-syzkaller #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014 RIP: 0010:debug_print_object+0x16e/0x250 lib/debugobjects.c:505 Code: ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 af 00 00 00 48 8b 14 dd 40 29 05 8a 4c 89 ee 48 c7 c7 40 1d 05 8a e8 cc c1 21 05 <0f> 0b 83 05 55 a1 b2 09 01 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e c3 RSP: 0018:ffffc90007e9f710 EFLAGS: 00010086 RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000000000 RDX: 0000000000040000 RSI: ffffffff815f0c28 RDI: fffff52000fd3ed4 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff815ea9ce R11: 0000000000000000 R12: ffffffff89adf660 R13: ffffffff8a0523c0 R14: ffffffff81660140 R15: 1ffff92000fd3eed FS: 0000000000000000(0000) GS:ffff88802cc00000(0063) knlGS:00000000f44efb40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 00000000f7401004 CR3: 0000000062c7d000 CR4: 0000000000150ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: debug_object_assert_init lib/debugobjects.c:895 [inline] debug_object_assert_init+0x1f4/0x2e0 lib/debugobjects.c:866 debug_timer_assert_init kernel/time/timer.c:739 [inline] debug_assert_init kernel/time/timer.c:784 [inline] del_timer+0x6d/0x110 kernel/time/timer.c:1204 try_to_grab_pending+0x6d/0xd0 kernel/workqueue.c:1271 __cancel_work kernel/workqueue.c:3259 [inline] cancel_delayed_work+0x79/0x340 kernel/workqueue.c:3288 sco_sock_clear_timer+0x54/0xf0 net/bluetooth/sco.c:120 sco_conn_del+0x139/0x2c0 net/bluetooth/sco.c:198 sco_disconn_cfm+0x71/0xb0 net/bluetooth/sco.c:1374 hci_disconn_cfm include/net/bluetooth/hci_core.h:1543 [inline] hci_conn_hash_flush+0x127/0x260 net/bluetooth/hci_conn.c:1742 hci_dev_do_close+0x57d/0x1150 net/bluetooth/hci_core.c:1672 hci_rfkill_set_block+0x19c/0x1d0 net/bluetooth/hci_core.c:2113 rfkill_set_block+0x1f9/0x540 net/rfkill/core.c:344 rfkill_fop_write+0x267/0x500 net/rfkill/core.c:1268 do_loop_readv_writev fs/read_write.c:749 [inline] do_loop_readv_writev fs/read_write.c:733 [inline] do_iter_write+0x4f8/0x710 fs/read_write.c:853 vfs_writev+0x1aa/0x630 fs/read_write.c:924 do_writev+0x27f/0x300 fs/read_write.c:967 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline] __do_fast_syscall_32+0x65/0xf0 arch/x86/entry/common.c:178 do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:203 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c RIP: 0023:0xf6ef5549 Code: 03 74 c0 01 10 05 03 74 b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000f44ef5fc EFLAGS: 00000296 ORIG_RAX: 0000000000000092 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000020000000 RDX: 0000000000000300 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 ---------------- Code disassembly (best guess): 0: 03 74 c0 01 add 0x1(%rax,%rax,8),%esi 4: 10 05 03 74 b8 01 adc %al,0x1b87403(%rip) # 0x1b8740d a: 10 06 adc %al,(%rsi) c: 03 74 b4 01 add 0x1(%rsp,%rsi,4),%esi 10: 10 07 adc %al,(%rdi) 12: 03 74 b0 01 add 0x1(%rax,%rsi,4),%esi 16: 10 08 adc %cl,(%rax) 18: 03 74 d8 01 add 0x1(%rax,%rbx,8),%esi 1c: 00 00 add %al,(%rax) 1e: 00 00 add %al,(%rax) 20: 00 51 52 add %dl,0x52(%rcx) 23: 55 push %rbp 24: 89 e5 mov %esp,%ebp 26: 0f 34 sysenter 28: cd 80 int $0x80 * 2a: 5d pop %rbp <-- trapping instruction 2b: 5a pop %rdx 2c: 59 pop %rcx 2d: c3 retq 2e: 90 nop 2f: 90 nop 30: 90 nop 31: 90 nop 32: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi 39: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi --- 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.