netdev - [syzbot] [bluetooth?] WARNING in hci_send

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Message-ID: <67beb22c.050a0220.2eba0.0049.GAE@google.com>
Date: Tue, 25 Feb 2025 22:18:20 -0800
From: syzbot <syzbot+d04bd412c1b0e2f36647@...kaller.appspotmail.com>
To: johan.hedberg@...il.com, linux-bluetooth@...r.kernel.org, 
	linux-kernel@...r.kernel.org, luiz.dentz@...il.com, marcel@...tmann.org, 
	netdev@...r.kernel.org, syzkaller-bugs@...glegroups.com
Subject: [syzbot] [bluetooth?] WARNING in hci_send_cmd (2)

Hello,

syzbot found the following issue on:

HEAD commit:    28b04731a38c MAINTAINERS: fix DWMAC S32 entry
git tree:       net
console output: https://syzkaller.appspot.com/x/log.txt?x=15507ae4580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=b7bde34acd8f53b1
dashboard link: https://syzkaller.appspot.com/bug?extid=d04bd412c1b0e2f36647
compiler:       Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40

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

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/e10163bfe6ac/disk-28b04731.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/0bb611c3bfe3/vmlinux-28b04731.xz
kernel image: https://storage.googleapis.com/syzbot-assets/c3fd8dd5fabb/bzImage-28b04731.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+d04bd412c1b0e2f36647@...kaller.appspotmail.com

Bluetooth: MGMT ver 1.23
------------[ cut here ]------------
WARNING: CPU: 1 PID: 6674 at kernel/workqueue.c:2257 __queue_work+0xcd3/0xf50 kernel/workqueue.c:2256
Modules linked in:
CPU: 1 UID: 0 PID: 6674 Comm: syz.2.227 Not tainted 6.14.0-rc3-syzkaller-00154-g28b04731a38c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:__queue_work+0xcd3/0xf50 kernel/workqueue.c:2256
Code: ff e8 e1 af 38 00 90 0f 0b 90 e9 b2 fe ff ff e8 d3 af 38 00 eb 13 e8 cc af 38 00 eb 0c e8 c5 af 38 00 eb 05 e8 be af 38 00 90 <0f> 0b 90 48 83 c4 60 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc
RSP: 0018:ffffc9001b5ef6c8 EFLAGS: 00010087
RAX: ffffffff81890ac4 RBX: ffff888028dc8000 RCX: 0000000000080000
RDX: ffffc9000bf59000 RSI: 000000000003158c RDI: 000000000003158d
RBP: 0000000000000000 R08: ffffffff8188ff24 R09: 0000000000000000
R10: ffffc9001b5ef7a0 R11: fffff520036bdef5 R12: ffff888027d1c800
R13: ffff888027d1c9c0 R14: dffffc0000000000 R15: 0000000000000008
FS:  00007f93037aa6c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c381f89 CR3: 000000007d25a000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 queue_work_on+0x1c2/0x380 kernel/workqueue.c:2390
 queue_work include/linux/workqueue.h:662 [inline]
 hci_send_cmd+0xb6/0x180 net/bluetooth/hci_core.c:3048
 set_link_security+0x606/0x820 net/bluetooth/mgmt.c:1909
 hci_mgmt_cmd+0xa1f/0xf10 net/bluetooth/hci_sock.c:1712
 hci_sock_sendmsg+0x7b8/0x11c0 net/bluetooth/hci_sock.c:1832
 sock_sendmsg_nosec net/socket.c:718 [inline]
 __sock_sendmsg+0x221/0x270 net/socket.c:733
 sock_write_iter+0x2d7/0x3f0 net/socket.c:1137
 new_sync_write fs/read_write.c:586 [inline]
 vfs_write+0xacf/0xd10 fs/read_write.c:679
 ksys_write+0x18f/0x2b0 fs/read_write.c:731
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f930298d169
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f93037aa038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f9302ba5fa0 RCX: 00007f930298d169
RDX: 0000000000000007 RSI: 0000400000000000 RDI: 0000000000000008
RBP: 00007f9302a0e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f9302ba5fa0 R15: 00007ffeb82b7bb8
 </TASK>


---
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