Oops: general protection fault, probably for non-canonical address 0xdffffc000000005f: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x00000000000002f8-0x00000000000002ff]
CPU: 1 UID: 0 PID: 6616 Comm: syz.3.139 Not tainted 6.15.0-rc1-next-20250411-syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:h5_recv+0x137/0x9b0 drivers/bluetooth/hci_h5.c:572
Code: 48 89 44 24 30 4c 89 e8 48 c1 e8 03 48 89 44 24 48 49 be 00 00 00 00 00 fc ff df 4c 89 6c 24 50 4c 89 64 24 10 48 8b 44 24 30 <42> 80 3c 30 00 74 08 4c 89 e7 e8 9a fe 3d f9 49 8b 1c 24 31 ff 48
RSP: 0018:ffffc9000b157c40 EFLAGS: 00010202
RAX: 000000000000005f RBX: 0000000000000000 RCX: 0000000000080000
RDX: ffff888027d31e00 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc9000b157d60 R08: ffffffff88efb201 R09: 1ffff1100c31d203
R10: dffffc0000000000 R11: ffffffff88efb140 R12: 00000000000002f8
R13: 0000000000000308 R14: dffffc0000000000 R15: 0000000000000001
FS:  00007f69851916c0(0000) GS:ffff888125080000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6985190f98 CR3: 000000002fd0a000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 hci_uart_tty_receive+0x197/0x220 drivers/bluetooth/hci_ldisc.c:627
 tiocsti+0x24f/0x310 drivers/tty/tty_io.c:2299
 tty_ioctl+0x516/0xdc0 drivers/tty/tty_io.c:2716
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:906 [inline]
 __se_sys_ioctl+0xf1/0x160 fs/ioctl.c:892
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f698778d169
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:00007f6985191038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f69879a6240 RCX: 00007f698778d169
RDX: 0000200000000340 RSI: 0000000000005412 RDI: 0000000000000004
RBP: 00007f698780e990 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f69879a6240 R15: 00007ffe33e6faa8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:h5_recv+0x137/0x9b0 drivers/bluetooth/hci_h5.c:572
Code: 48 89 44 24 30 4c 89 e8 48 c1 e8 03 48 89 44 24 48 49 be 00 00 00 00 00 fc ff df 4c 89 6c 24 50 4c 89 64 24 10 48 8b 44 24 30 <42> 80 3c 30 00 74 08 4c 89 e7 e8 9a fe 3d f9 49 8b 1c 24 31 ff 48
RSP: 0018:ffffc9000b157c40 EFLAGS: 00010202
RAX: 000000000000005f RBX: 0000000000000000 RCX: 0000000000080000
RDX: ffff888027d31e00 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc9000b157d60 R08: ffffffff88efb201 R09: 1ffff1100c31d203
R10: dffffc0000000000 R11: ffffffff88efb140 R12: 00000000000002f8
R13: 0000000000000308 R14: dffffc0000000000 R15: 0000000000000001
FS:  00007f69851916c0(0000) GS:ffff888125080000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6985190f98 CR3: 000000002fd0a000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	48 89 44 24 30       	mov    %rax,0x30(%rsp)
   5:	4c 89 e8             	mov    %r13,%rax
   8:	48 c1 e8 03          	shr    $0x3,%rax
   c:	48 89 44 24 48       	mov    %rax,0x48(%rsp)
  11:	49 be 00 00 00 00 00 	movabs $0xdffffc0000000000,%r14
  18:	fc ff df
  1b:	4c 89 6c 24 50       	mov    %r13,0x50(%rsp)
  20:	4c 89 64 24 10       	mov    %r12,0x10(%rsp)
  25:	48 8b 44 24 30       	mov    0x30(%rsp),%rax
* 2a:	42 80 3c 30 00       	cmpb   $0x0,(%rax,%r14,1) <-- trapping instruction
  2f:	74 08                	je     0x39
  31:	4c 89 e7             	mov    %r12,%rdi
  34:	e8 9a fe 3d f9       	call   0xf93dfed3
  39:	49 8b 1c 24          	mov    (%r12),%rbx
  3d:	31 ff                	xor    %edi,%edi
  3f:	48                   	rex.W