Oops: general protection fault, probably for non-canonical address 0xdffffc000000005f: 0000 [#1] SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x00000000000002f8-0x00000000000002ff]
CPU: 3 UID: 0 PID: 12854 Comm: syz.9.1728 Not tainted 6.16.0-rc5-syzkaller-00266-g3f31a806a62e #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:h5_recv+0x104/0x910 drivers/bluetooth/hci_h5.c:572
Code: c1 e8 03 4c 01 f0 48 89 44 24 08 48 8d 83 08 03 00 00 48 89 44 24 30 48 c1 e8 03 48 89 44 24 10 e8 b1 73 50 f9 48 8b 44 24 08 <80> 38 00 0f 85 ae 01 00 00 48 89 ea 48 89 e9 4c 8b bb f8 02 00 00
RSP: 0018:ffffc9000d607ba8 EFLAGS: 00010293
RAX: dffffc000000005f RBX: 0000000000000000 RCX: ffffffff886aeaea
RDX: ffff888026a7a440 RSI: ffffffff886aeb2f RDI: 0000000000000005
RBP: ffffc9000d607d30 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000001
R13: 0000000000000001 R14: dffffc0000000000 R15: ffffffff8cb356e0
FS:  0000000000000000(0000) GS:ffff888097820000(0063) knlGS:00000000f500cb40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00000000f7494230 CR3: 000000004c64a000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 hci_uart_tty_receive+0x251/0x7e0 drivers/bluetooth/hci_ldisc.c:627
 tiocsti drivers/tty/tty_io.c:2290 [inline]
 tty_ioctl+0x583/0x1640 drivers/tty/tty_io.c:2706
 tty_compat_ioctl+0x24a/0x4d0 drivers/tty/tty_io.c:2942
 __do_compat_sys_ioctl fs/ioctl.c:1005 [inline]
 __se_compat_sys_ioctl fs/ioctl.c:948 [inline]
 __ia32_compat_sys_ioctl+0x23f/0x370 fs/ioctl.c:948
 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline]
 __do_fast_syscall_32+0x7c/0x3a0 arch/x86/entry/syscall_32.c:306
 do_fast_syscall_32+0x32/0x80 arch/x86/entry/syscall_32.c:331
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e
RIP: 0023:0xf705e579
Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00
RSP: 002b:00000000f500c55c EFLAGS: 00000296 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 0000000000000027 RCX: 0000000000005412
RDX: 0000000080000140 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000296 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:h5_recv+0x104/0x910 drivers/bluetooth/hci_h5.c:572
Code: c1 e8 03 4c 01 f0 48 89 44 24 08 48 8d 83 08 03 00 00 48 89 44 24 30 48 c1 e8 03 48 89 44 24 10 e8 b1 73 50 f9 48 8b 44 24 08 <80> 38 00 0f 85 ae 01 00 00 48 89 ea 48 89 e9 4c 8b bb f8 02 00 00
RSP: 0018:ffffc9000d607ba8 EFLAGS: 00010293
RAX: dffffc000000005f RBX: 0000000000000000 RCX: ffffffff886aeaea
RDX: ffff888026a7a440 RSI: ffffffff886aeb2f RDI: 0000000000000005
RBP: ffffc9000d607d30 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000001
R13: 0000000000000001 R14: dffffc0000000000 R15: ffffffff8cb356e0
FS:  0000000000000000(0000) GS:ffff888097720000(0063) knlGS:00000000f500cb40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00000000f73db3f8 CR3: 000000004c64a000 CR4: 0000000000352ef0
----------------
Code disassembly (best guess):
   0:	c1 e8 03             	shr    $0x3,%eax
   3:	4c 01 f0             	add    %r14,%rax
   6:	48 89 44 24 08       	mov    %rax,0x8(%rsp)
   b:	48 8d 83 08 03 00 00 	lea    0x308(%rbx),%rax
  12:	48 89 44 24 30       	mov    %rax,0x30(%rsp)
  17:	48 c1 e8 03          	shr    $0x3,%rax
  1b:	48 89 44 24 10       	mov    %rax,0x10(%rsp)
  20:	e8 b1 73 50 f9       	call   0xf95073d6
  25:	48 8b 44 24 08       	mov    0x8(%rsp),%rax
* 2a:	80 38 00             	cmpb   $0x0,(%rax) <-- trapping instruction
  2d:	0f 85 ae 01 00 00    	jne    0x1e1
  33:	48 89 ea             	mov    %rbp,%rdx
  36:	48 89 e9             	mov    %rbp,%rcx
  39:	4c 8b bb f8 02 00 00 	mov    0x2f8(%rbx),%r15