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: 8998 Comm: syz.0.667 Not tainted 6.15.0-rc5-syzkaller-00136-g9c69f8884904 #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025
RIP: 0010:h5_recv+0x142/0x8c0 drivers/bluetooth/hci_h5.c:572
Code: 18 48 c1 ea 03 48 89 54 24 28 48 89 d8 48 c1 e8 03 48 89 44 24 50 44 89 64 24 14 48 b8 00 00 00 00 00 fc ff df 48 8b 4c 24 30 <80> 3c 01 00 74 08 4c 89 ef e8 60 d5 1f fa 4d 8b 65 00 31 ff 4c 89
RSP: 0018:ffffc90004907c60 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 00000000000002e8 RCX: 000000000000005f
RDX: 000000000000005e RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90004907d80 R08: ffff88803287ac1f R09: 1ffff1100650f583
R10: dffffc0000000000 R11: ffffffff87ffc440 R12: 0000000000000001
R13: 00000000000002f8 R14: ffff88803287ac10 R15: ffffc90004907e20
FS:  00007f5436f586c0(0000) GS:ffff88812691a000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f770bae56c0 CR3: 0000000033bf4000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 hci_uart_tty_receive+0x18d/0x210 drivers/bluetooth/hci_ldisc.c:627
 tiocsti+0x235/0x2c0 drivers/tty/tty_io.c:2299
 tty_ioctl+0x622/0xde0 drivers/tty/tty_io.c:2716
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:906 [inline]
 __se_sys_ioctl+0xf9/0x170 fs/ioctl.c:892
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x7b/0x150 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f543618e969
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f5436f58038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f54363b6080 RCX: 00007f543618e969
RDX: 0000200000000140 RSI: 0000000000005412 RDI: 0000000000000006
RBP: 00007f5436210ab1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f54363b6080 R15: 00007fff7f6f3388
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:h5_recv+0x142/0x8c0 drivers/bluetooth/hci_h5.c:572
Code: 18 48 c1 ea 03 48 89 54 24 28 48 89 d8 48 c1 e8 03 48 89 44 24 50 44 89 64 24 14 48 b8 00 00 00 00 00 fc ff df 48 8b 4c 24 30 <80> 3c 01 00 74 08 4c 89 ef e8 60 d5 1f fa 4d 8b 65 00 31 ff 4c 89
RSP: 0018:ffffc90004907c60 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 00000000000002e8 RCX: 000000000000005f
RDX: 000000000000005e RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90004907d80 R08: ffff88803287ac1f R09: 1ffff1100650f583
R10: dffffc0000000000 R11: ffffffff87ffc440 R12: 0000000000000001
R13: 00000000000002f8 R14: ffff88803287ac10 R15: ffffc90004907e20
FS:  00007f5436f586c0(0000) GS:ffff888126a1a000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd1af48578 CR3: 0000000033bf4000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess), 1 bytes skipped:
   0:	48 c1 ea 03          	shr    $0x3,%rdx
   4:	48 89 54 24 28       	mov    %rdx,0x28(%rsp)
   9:	48 89 d8             	mov    %rbx,%rax
   c:	48 c1 e8 03          	shr    $0x3,%rax
  10:	48 89 44 24 50       	mov    %rax,0x50(%rsp)
  15:	44 89 64 24 14       	mov    %r12d,0x14(%rsp)
  1a:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  21:	fc ff df
  24:	48 8b 4c 24 30       	mov    0x30(%rsp),%rcx
* 29:	80 3c 01 00          	cmpb   $0x0,(%rcx,%rax,1) <-- trapping instruction
  2d:	74 08                	je     0x37
  2f:	4c 89 ef             	mov    %r13,%rdi
  32:	e8 60 d5 1f fa       	call   0xfa1fd597
  37:	4d 8b 65 00          	mov    0x0(%r13),%r12
  3b:	31 ff                	xor    %edi,%edi
  3d:	4c                   	rex.WR
  3e:	89                   	.byte 0x89