Received-SPF: pass (google.com: domain of linux-bluetooth+bounces-4523-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:45d1:ec00::1 as permitted sender) client-ip=2604:1380:45d1:ec00::1;
Precedence: bulk
MIME-Version: 1.0
Date: Fri, 10 May 2024 18:30:30 -0700
Message-ID: <00000000000005ea3206182399ea@google.com>
Subject: [syzbot] [bluetooth?] WARNING in sco_chan_del
From: syzbot <syzbot+85e9ce7008aa4afb189e@syzkaller.appspotmail.com>
To: johan.hedberg@gmail.com, linux-bluetooth@vger.kernel.org, 
	linux-kernel@vger.kernel.org, luiz.dentz@gmail.com, marcel@holtmann.org, 
	syzkaller-bugs@googlegroups.com
Content-Type: text/plain; charset="UTF-8"

Hello,

syzbot found the following issue on:

HEAD commit:    ee5b455b0ada Merge tag 'slab-for-6.9-rc7-fixes' of git://g..
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=16caf2d4980000
kernel config:  https://syzkaller.appspot.com/x/.config?x=7144b4fe7fbf5900
dashboard link: https://syzkaller.appspot.com/bug?extid=85e9ce7008aa4afb189e
compiler:       gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40

Unfortunately, I don't have any reproducer for this issue yet.

Downloadable assets:
disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/7bc7510fe41f/non_bootable_disk-ee5b455b.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/96e27f6a83fe/vmlinux-ee5b455b.xz
kernel image: https://storage.googleapis.com/syzbot-assets/49d89ce985f7/bzImage-ee5b455b.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+85e9ce7008aa4afb189e@syzkaller.appspotmail.com

------------[ cut here ]------------
WARNING: CPU: 2 PID: 8103 at kernel/workqueue.c:2335 __queue_work+0xc13/0x1020 kernel/workqueue.c:2334
Modules linked in:
CPU: 2 PID: 8103 Comm: syz-executor.0 Not tainted 6.9.0-rc7-syzkaller-00008-gee5b455b0ada #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:__queue_work+0xc13/0x1020 kernel/workqueue.c:2334
Code: 07 83 c0 03 38 d0 7c 09 84 d2 74 05 e8 46 4b 90 00 8b 5b 2c 31 ff 83 e3 20 89 de e8 47 f9 34 00 85 db 75 2a e8 5e fe 34 00 90 <0f> 0b 90 e9 4d f9 ff ff e8 50 fe 34 00 90 0f 0b 90 e9 fc f8 ff ff
RSP: 0018:ffffc90003d37a20 EFLAGS: 00010087
RAX: 0000000000004b93 RBX: 0000000000000000 RCX: ffffc90004461000
RDX: 0000000000040000 RSI: ffffffff8158ce92 RDI: 0000000000000005
RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000002 R12: ffff88802c7788c8
R13: 0000000000000008 R14: ffff88802c7788d0 R15: ffff8880291bc800
FS:  00007efff9b636c0(0000) GS:ffff88806b400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5739842d58 CR3: 00000000524fc000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __queue_delayed_work+0x21b/0x2e0 kernel/workqueue.c:2564
 queue_delayed_work_on+0x10e/0x130 kernel/workqueue.c:2608
 queue_delayed_work include/linux/workqueue.h:620 [inline]
 hci_conn_drop include/net/bluetooth/hci_core.h:1623 [inline]
 hci_conn_drop include/net/bluetooth/hci_core.h:1593 [inline]
 sco_chan_del+0x1f8/0x500 net/bluetooth/sco.c:171
 __sco_sock_close+0xf2/0x690 net/bluetooth/sco.c:455
 sco_sock_close net/bluetooth/sco.c:470 [inline]
 sco_sock_release+0x6f/0x2d0 net/bluetooth/sco.c:1245
 __sock_release+0xb0/0x270 net/socket.c:659
 sock_close+0x1c/0x30 net/socket.c:1421
 __fput+0x270/0xb80 fs/file_table.c:422
 task_work_run+0x14e/0x250 kernel/task_work.c:180
 get_signal+0x1ca/0x2710 kernel/signal.c:2683
 arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:310
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x14a/0x2a0 kernel/entry/common.c:218
 do_syscall_64+0xdc/0x260 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7efff8e7dca9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 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 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007efff9b630c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
RAX: fffffffffffffffc RBX: 00007efff8fabf80 RCX: 00007efff8e7dca9
RDX: 0000000000000008 RSI: 0000000020000040 RDI: 0000000000000005
RBP: 00007efff8ec947e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007efff8fabf80 R15: 00007ffe83d40458
 </TASK>


---
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.

If the report is already addressed, let syzbot know by replying with:
#syz fix: exact-commit-title

If you want to overwrite report's subsystems, reply with:
#syz set subsystems: new-subsystem
(See the list of subsystem names on the web dashboard)

If the report is a duplicate of another one, reply with:
#syz dup: exact-subject-of-another-report

If you want to undo deduplication, reply with:
#syz undup