input: Bluetooth HID Boot Protocol Device as /devices/virtual/bluetooth/hci1/hci1:200/input1070
Oops: general protection fault, probably for non-canonical address 0xdffffc000000005f: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x00000000000002f8-0x00000000000002ff]
CPU: 0 UID: 0 PID: 8694 Comm: syz.0.1604 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
RIP: 0010:__mutex_lock_common kernel/locking/mutex.c:593 [inline]
RIP: 0010:__mutex_lock+0x14b/0x1300 kernel/locking/mutex.c:776
Code: 80 24 28 9a 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 e4 0f 00 00 83 3d f3 ce 76 0e 00 75 23 49 8d 7c 24 60 48 89 f8 48 c1 e8 03 <42> 80 3c 28 00 74 05 e8 99 bc 7e f6 4d 39 64 24 60 0f 85 10 0f 00
RSP: 0018:ffffc90005f677c0 EFLAGS: 00010206
RAX: 000000000000005f RBX: 1ffff92000becf10 RCX: ffffffff9a282403
RDX: 0000000000000000 RSI: ffffffff8e16cb32 RDI: 00000000000002f8
RBP: ffffc90005f67980 R08: ffffc90005f678e7 R09: 0000000000000000
R10: ffffc90005f678c0 R11: fffff52000becf1d R12: 0000000000000298
R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  000055555b03f500(0000) GS:ffff888125454000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1e481456b8 CR3: 0000000075ad8000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 l2cap_unregister_user+0x36/0x170 net/bluetooth/l2cap_core.c:1740
 hidp_connection_del+0xb0/0x170 net/bluetooth/hidp/core.c:1421
 do_hidp_sock_ioctl net/bluetooth/hidp/sock.c:97 [inline]
 hidp_sock_ioctl+0x3ab/0x650 net/bluetooth/hidp/sock.c:128
 sock_do_ioctl+0x101/0x320 net/socket.c:1254
 sock_ioctl+0x5c6/0x7f0 net/socket.c:1375
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:597 [inline]
 __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:583
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7f90f9c819
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffda0cc3548 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f7f91215fa0 RCX: 00007f7f90f9c819
RDX: 0000200000000000 RSI: 00000000400448c9 RDI: 0000000000000004
RBP: 00007f7f91032c91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f7f91215fac R14: 00007f7f91215fa0 R15: 00007f7f91215fa0
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__mutex_lock_common kernel/locking/mutex.c:593 [inline]
RIP: 0010:__mutex_lock+0x14b/0x1300 kernel/locking/mutex.c:776
Code: 80 24 28 9a 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 e4 0f 00 00 83 3d f3 ce 76 0e 00 75 23 49 8d 7c 24 60 48 89 f8 48 c1 e8 03 <42> 80 3c 28 00 74 05 e8 99 bc 7e f6 4d 39 64 24 60 0f 85 10 0f 00
RSP: 0018:ffffc90005f677c0 EFLAGS: 00010206
RAX: 000000000000005f RBX: 1ffff92000becf10 RCX: ffffffff9a282403
RDX: 0000000000000000 RSI: ffffffff8e16cb32 RDI: 00000000000002f8
RBP: ffffc90005f67980 R08: ffffc90005f678e7 R09: 0000000000000000
R10: ffffc90005f678c0 R11: fffff52000becf1d R12: 0000000000000298
R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  000055555b03f500(0000) GS:ffff888125554000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1e47272140 CR3: 0000000075ad8000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
   0:	80 24 28 9a          	andb   $0x9a,(%rax,%rbp,1)
   4:	48 c1 e8 03          	shr    $0x3,%rax
   8:	42 0f b6 04 28       	movzbl (%rax,%r13,1),%eax
   d:	84 c0                	test   %al,%al
   f:	0f 85 e4 0f 00 00    	jne    0xff9
  15:	83 3d f3 ce 76 0e 00 	cmpl   $0x0,0xe76cef3(%rip)        # 0xe76cf0f
  1c:	75 23                	jne    0x41
  1e:	49 8d 7c 24 60       	lea    0x60(%r12),%rdi
  23:	48 89 f8             	mov    %rdi,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 80 3c 28 00       	cmpb   $0x0,(%rax,%r13,1) <-- trapping instruction
  2f:	74 05                	je     0x36
  31:	e8 99 bc 7e f6       	call   0xf67ebccf
  36:	4d 39 64 24 60       	cmp    %r12,0x60(%r12)
  3b:	0f                   	.byte 0xf
  3c:	85 10                	test   %edx,(%rax)
  3e:	0f                   	.byte 0xf