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: 8828 Comm: syz.4.899 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/13/2026
RIP: 0010:h5_recv+0x136/0x850 drivers/bluetooth/hci_h5.c:596
Code: 03 48 89 44 24 50 48 89 4c 24 10 48 c1 e9 03 48 89 4c 24 20 48 89 d8 48 c1 e8 03 48 89 44 24 48 4c 89 64 24 58 48 8b 44 24 28 <42> 80 3c 30 00 74 08 4c 89 ef e8 5b ea c4 f9 4d 8b 65 00 31 ff 4c
RSP: 0018:ffffc900051b7c40 EFLAGS: 00010202
RAX: 000000000000005f RBX: 00000000000002e8 RCX: 000000000000005e
RDX: 000000000000005f RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc900051b7d60 R08: ffff88805c3f441f R09: 1ffff1100b87e883
R10: dffffc0000000000 R11: ffffffff88660ce0 R12: ffff88805c3f4410
R13: 00000000000002f8 R14: dffffc0000000000 R15: ffffc900051b7e00
FS:  00007f12deed66c0(0000) GS:ffff8881252a3000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f12deed6d58 CR3: 00000000370b2000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 hci_uart_tty_receive+0x194/0x220 drivers/bluetooth/hci_ldisc.c:627
 tiocsti+0x218/0x2a0 drivers/tty/tty_io.c:2290
 tty_ioctl+0x626/0xde0 drivers/tty/tty_io.c:2706
 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+0xe2/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f12ddf9acb9
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:00007f12deed6028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f12de216090 RCX: 00007f12ddf9acb9
RDX: 0000200000000180 RSI: 0000000000005412 RDI: 0000000000000004
RBP: 00007f12de008bf7 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f12de216128 R14: 00007f12de216090 R15: 00007ffd695258a8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:h5_recv+0x136/0x850 drivers/bluetooth/hci_h5.c:596
Code: 03 48 89 44 24 50 48 89 4c 24 10 48 c1 e9 03 48 89 4c 24 20 48 89 d8 48 c1 e8 03 48 89 44 24 48 4c 89 64 24 58 48 8b 44 24 28 <42> 80 3c 30 00 74 08 4c 89 ef e8 5b ea c4 f9 4d 8b 65 00 31 ff 4c
RSP: 0018:ffffc900051b7c40 EFLAGS: 00010202
RAX: 000000000000005f RBX: 00000000000002e8 RCX: 000000000000005e
RDX: 000000000000005f RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc900051b7d60 R08: ffff88805c3f441f R09: 1ffff1100b87e883
R10: dffffc0000000000 R11: ffffffff88660ce0 R12: ffff88805c3f4410
R13: 00000000000002f8 R14: dffffc0000000000 R15: ffffc900051b7e00
FS:  00007f12deed66c0(0000) GS:ffff8881253a3000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f03ce9e1198 CR3: 00000000370b2000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
   0:	03 48 89             	add    -0x77(%rax),%ecx
   3:	44 24 50             	rex.R and $0x50,%al
   6:	48 89 4c 24 10       	mov    %rcx,0x10(%rsp)
   b:	48 c1 e9 03          	shr    $0x3,%rcx
   f:	48 89 4c 24 20       	mov    %rcx,0x20(%rsp)
  14:	48 89 d8             	mov    %rbx,%rax
  17:	48 c1 e8 03          	shr    $0x3,%rax
  1b:	48 89 44 24 48       	mov    %rax,0x48(%rsp)
  20:	4c 89 64 24 58       	mov    %r12,0x58(%rsp)
  25:	48 8b 44 24 28       	mov    0x28(%rsp),%rax
* 2a:	42 80 3c 30 00       	cmpb   $0x0,(%rax,%r14,1) <-- trapping instruction
  2f:	74 08                	je     0x39
  31:	4c 89 ef             	mov    %r13,%rdi
  34:	e8 5b ea c4 f9       	call   0xf9c4ea94
  39:	4d 8b 65 00          	mov    0x0(%r13),%r12
  3d:	31 ff                	xor    %edi,%edi
  3f:	4c                   	rex.WR