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Date: Fri, 26 Apr 2024 05:10:32 -0700
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Subject: [syzbot] [bluetooth?] WARNING in hci_recv_frame
From: syzbot <syzbot+3e07a461b836821ff70e@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, 
	netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com
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Hello,

syzbot found the following issue on:

HEAD commit:    2bd87951de65 Merge git://git.kernel.org/pub/scm/linux/kern..
git tree:       net-next
console output: https://syzkaller.appspot.com/x/log.txt?x=1655ccef180000
kernel config:  https://syzkaller.appspot.com/x/.config?x=5ced800a6af0f5b0
dashboard link: https://syzkaller.appspot.com/bug?extid=3e07a461b836821ff70e
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/167fa7ed263b/disk-2bd87951.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/d5451b036870/vmlinux-2bd87951.xz
kernel image: https://storage.googleapis.com/syzbot-assets/a0d784e076f2/bzImage-2bd87951.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+3e07a461b836821ff70e@syzkaller.appspotmail.com

------------[ cut here ]------------
WARNING: CPU: 0 PID: 14307 at kernel/workqueue.c:2322 __queue_work+0xc6c/0xef0 kernel/workqueue.c:2321
Modules linked in:
CPU: 0 PID: 14307 Comm: syz-executor.2 Not tainted 6.9.0-rc5-syzkaller-01160-g2bd87951de65 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:__queue_work+0xc6c/0xef0 kernel/workqueue.c:2321
Code: ff e8 48 38 36 00 90 0f 0b 90 e9 20 fd ff ff e8 3a 38 36 00 eb 13 e8 33 38 36 00 eb 0c e8 2c 38 36 00 eb 05 e8 25 38 36 00 90 <0f> 0b 90 48 83 c4 68 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc
RSP: 0018:ffffc900034f78a0 EFLAGS: 00010093
RAX: ffffffff815fc90d RBX: ffff88802a579e00 RCX: ffff88802a579e00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff815fbdd3 R09: 1ffff1100f64b9ac
R10: dffffc0000000000 R11: ffffed100f64b9ad R12: ffff888068ebd9c0
R13: dffffc0000000000 R14: ffff888068ebd800 R15: 0000000000000008
FS:  000055557f1bb480(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0909aba170 CR3: 0000000079f8e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 queue_work_on+0x14f/0x250 kernel/workqueue.c:2435
 queue_work include/linux/workqueue.h:605 [inline]
 hci_recv_frame+0x489/0x610 net/bluetooth/hci_core.c:2998
 vhci_get_user drivers/bluetooth/hci_vhci.c:521 [inline]
 vhci_write+0x35a/0x480 drivers/bluetooth/hci_vhci.c:617
 do_iter_readv_writev+0x5a4/0x800
 vfs_writev+0x395/0xbb0 fs/read_write.c:971
 do_writev+0x1b1/0x350 fs/read_write.c:1018
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0909a7dc9d
Code: 28 89 54 24 1c 48 89 74 24 10 89 7c 24 08 e8 0a 70 02 00 8b 54 24 1c 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 14 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 33 44 89 c7 48 89 44 24 08 e8 5e 70 02 00 48
RSP: 002b:00007fffb04b4630 EFLAGS: 00000293 ORIG_RAX: 0000000000000014
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f0909a7dc9d
RDX: 0000000000000003 RSI: 00007fffb04b4670 RDI: 00000000000000ca
RBP: 000055557f1bb430 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000008 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f0909bac9d8 R15: 000000000000000c
 </TASK>


---
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