linux-kernel - [syzbot] [bluetooth?] WARNING in __hci_cmd_sync

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Message-ID: <000000000000fa6583061ccb8e3d@google.com>
Date: Tue, 09 Jul 2024 00:34:22 -0700
From: syzbot <syzbot+f52b6db1fe57bfb08d49@...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, 
	syzkaller-bugs@...glegroups.com
Subject: [syzbot] [bluetooth?] WARNING in __hci_cmd_sync_sk

Hello,

syzbot found the following issue on:

HEAD commit:    256abd8e550c Linux 6.10-rc7
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=14e81031980000
kernel config:  https://syzkaller.appspot.com/x/.config?x=42a432cfd0e579e0
dashboard link: https://syzkaller.appspot.com/bug?extid=f52b6db1fe57bfb08d49
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/4b52809e32ca/disk-256abd8e.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/6c71e8f0eab4/vmlinux-256abd8e.xz
kernel image: https://storage.googleapis.com/syzbot-assets/fdcc77cd0018/bzImage-256abd8e.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+f52b6db1fe57bfb08d49@...kaller.appspotmail.com

------------[ cut here ]------------
WARNING: CPU: 0 PID: 16659 at kernel/workqueue.c:2282 __queue_work+0xc5e/0xee0 kernel/workqueue.c:2281
Modules linked in:
CPU: 0 PID: 16659 Comm: syz-executor Not tainted 6.10.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
RIP: 0010:__queue_work+0xc5e/0xee0 kernel/workqueue.c:2281
Code: ff e8 76 83 36 00 90 0f 0b 90 e9 20 fd ff ff e8 68 83 36 00 eb 13 e8 61 83 36 00 eb 0c e8 5a 83 36 00 eb 05 e8 53 83 36 00 90 <0f> 0b 90 48 83 c4 58 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc
RSP: 0018:ffffc9000ecef810 EFLAGS: 00010093
RAX: ffffffff815fa35f RBX: ffff888061d45a00 RCX: ffff888061d45a00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff815f9833 R09: 0000000000000000
R10: ffffc9000ecef8e0 R11: fffff52001d9df1d R12: ffff8880648631c0
R13: dffffc0000000000 R14: ffff888064863000 R15: 0000000000000008
FS:  000055555f45a500(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f755bb04030 CR3: 0000000052a18000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 queue_work_on+0x1c2/0x380 kernel/workqueue.c:2411
 queue_work include/linux/workqueue.h:621 [inline]
 hci_cmd_sync_run net/bluetooth/hci_sync.c:145 [inline]
 __hci_cmd_sync_sk+0x7b1/0x1130 net/bluetooth/hci_sync.c:167
 __hci_cmd_sync_status_sk net/bluetooth/hci_sync.c:252 [inline]
 __hci_cmd_sync_status+0x37/0x130 net/bluetooth/hci_sync.c:278
 hci_dev_cmd+0x51c/0xa50 net/bluetooth/hci_core.c:747
 sock_do_ioctl+0x158/0x460 net/socket.c:1222
 sock_ioctl+0x629/0x8e0 net/socket.c:1341
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:907 [inline]
 __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:893
 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: 0033:0x7f3a54b757db
Code: 00 48 89 44 24 18 31 c0 48 8d 44 24 60 c7 04 24 10 00 00 00 48 89 44 24 08 48 8d 44 24 20 48 89 44 24 10 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1c 48 8b 44 24 18 64 48 2b 04 25 28 00 00
RSP: 002b:00007ffee9a9ba60 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f3a54b757db
RDX: 00007ffee9a9bad8 RSI: 00000000400448dd RDI: 0000000000000003
RBP: 000055555f45a4a8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 0000000000000001 R14: 0000000000000005 R15: 0000000000000009
 </TASK>


---
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