linux-kernel - Re: [syzbot] [bluetooth?] WARNING in hci_recv

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Message-ID: <673da95e.050a0220.363a1b.0009.GAE@google.com>
Date: Wed, 20 Nov 2024 01:18:22 -0800
From: syzbot <syzbot+3e07a461b836821ff70e@...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: Re: [syzbot] [bluetooth?] WARNING in hci_recv_frame

syzbot has found a reproducer for the following issue on:

HEAD commit:    a5c93bfec0be Merge tag 'x86-mm-2024-11-18' of git://git.ke..
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=1378475f980000
kernel config:  https://syzkaller.appspot.com/x/.config?x=9b5cb37a5a4eda10
dashboard link: https://syzkaller.appspot.com/bug?extid=3e07a461b836821ff70e
compiler:       gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=12694ae8580000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/70daf24cbd5f/disk-a5c93bfe.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/43d73b55bde3/vmlinux-a5c93bfe.xz
kernel image: https://storage.googleapis.com/syzbot-assets/1742639611a8/bzImage-a5c93bfe.xz

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

Bluetooth: hci0: Opcode 0x0c03 failed: -112
------------[ cut here ]------------
WARNING: CPU: 1 PID: 11474 at kernel/workqueue.c:2257 __queue_work+0xc3a/0x1080 kernel/workqueue.c:2256
Modules linked in:
CPU: 1 UID: 0 PID: 11474 Comm: syz.3.1469 Not tainted 6.12.0-syzkaller-01518-ga5c93bfec0be #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
RIP: 0010:__queue_work+0xc3a/0x1080 kernel/workqueue.c:2256
Code: 07 83 c0 03 38 d0 7c 09 84 d2 74 05 e8 8f 55 98 00 8b 5b 2c 31 ff 83 e3 20 89 de e8 70 79 36 00 85 db 75 60 e8 27 77 36 00 90 <0f> 0b 90 e9 f9 f7 ff ff e8 19 77 36 00 90 0f 0b 90 e9 a8 f7 ff ff
RSP: 0018:ffffc9000b2b7bf8 EFLAGS: 00010093
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff815719b0
RDX: ffff88802b422440 RSI: ffffffff815719b9 RDI: 0000000000000005
RBP: ffff8880360a8a80 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000008 R14: ffff8880123d3000 R15: ffff8880123d3000
FS:  00007f22bc8606c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f38a17baf98 CR3: 000000006114e000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 queue_work_on+0x11a/0x140 kernel/workqueue.c:2390
 queue_work include/linux/workqueue.h:662 [inline]
 hci_recv_frame+0x23f/0x7e0 net/bluetooth/hci_core.c:2946
 vhci_get_user drivers/bluetooth/hci_vhci.c:511 [inline]
 vhci_write+0x385/0x470 drivers/bluetooth/hci_vhci.c:607
 new_sync_write fs/read_write.c:586 [inline]
 vfs_write+0x5ae/0x1150 fs/read_write.c:679
 ksys_write+0x12b/0x250 fs/read_write.c:731
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f22bb97d23f
Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 c9 8d 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 1c 8e 02 00 48
RSP: 002b:00007f22bc860000 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f22bbb35f80 RCX: 00007f22bb97d23f
RDX: 0000000000000007 RSI: 0000000020000000 RDI: 00000000000000ca
RBP: 00007f22bb9f175e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000020000000 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f22bbb35f80 R15: 00007ffc1b246d58
 </TASK>


---
If you want syzbot to run the reproducer, reply with:
#syz test: git://repo/address.git branch-or-commit-hash
If you attach or paste a git patch, syzbot will apply it before testing.