Oops: general protection fault, probably for non-canonical address 0xdffffc000000044c: 0000 [#1] SMP KASAN PTI
KASAN: probably user-memory-access in range [0x0000000000002260-0x0000000000002267]
CPU: 0 UID: 0 PID: 5984 Comm: kworker/u8:17 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
Workqueue: events_unbound flush_to_ldisc
RIP: 0010:n_tty_receive_buf_common+0x166/0x12f0 drivers/tty/n_tty.c:1702
Code: e9 03 48 89 8c 24 a0 00 00 00 48 81 c3 e8 03 00 00 31 ed 4c 89 7c 24 38 48 89 5c 24 70 48 89 6c 24 28 48 8b 84 24 08 01 00 00 <42> 80 3c 28 00 74 0d 48 8b bc 24 f8 00 00 00 e8 b6 f7 2c fd 4c 89
RSP: 0018:ffffc9000534f870 EFLAGS: 00010246
RAX: 000000000000044c RBX: ffff888030aa23e8 RCX: 000000000000000b
RDX: 1ffff1100615446a RSI: 000000000000000b RDI: ffff888030aa25c8
RBP: 0000000000000000 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52000a69efc R12: ffff88802845bb20
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff888030aa26a0
FS:  0000000000000000(0000) GS:ffff888127025000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b3270fff8 CR3: 0000000069e96000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 tty_port_default_receive_buf+0x6e/0xa0 drivers/tty/tty_port.c:37
 receive_buf drivers/tty/tty_buffer.c:445 [inline]
 flush_to_ldisc+0x24a/0x6e0 drivers/tty/tty_buffer.c:495
 process_one_work kernel/workqueue.c:3236 [inline]
 process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3319
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x436/0x7d0 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:n_tty_receive_buf_common+0x166/0x12f0 drivers/tty/n_tty.c:1702
Code: e9 03 48 89 8c 24 a0 00 00 00 48 81 c3 e8 03 00 00 31 ed 4c 89 7c 24 38 48 89 5c 24 70 48 89 6c 24 28 48 8b 84 24 08 01 00 00 <42> 80 3c 28 00 74 0d 48 8b bc 24 f8 00 00 00 e8 b6 f7 2c fd 4c 89
RSP: 0018:ffffc9000534f870 EFLAGS: 00010246
RAX: 000000000000044c RBX: ffff888030aa23e8 RCX: 000000000000000b
RDX: 1ffff1100615446a RSI: 000000000000000b RDI: ffff888030aa25c8
RBP: 0000000000000000 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52000a69efc R12: ffff88802845bb20
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff888030aa26a0
FS:  0000000000000000(0000) GS:ffff888127025000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b3270fff8 CR3: 0000000069e96000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
   0:	e9 03 48 89 8c       	jmp    0x8c894808
   5:	24 a0                	and    $0xa0,%al
   7:	00 00                	add    %al,(%rax)
   9:	00 48 81             	add    %cl,-0x7f(%rax)
   c:	c3                   	ret
   d:	e8 03 00 00 31       	call   0x31000015
  12:	ed                   	in     (%dx),%eax
  13:	4c 89 7c 24 38       	mov    %r15,0x38(%rsp)
  18:	48 89 5c 24 70       	mov    %rbx,0x70(%rsp)
  1d:	48 89 6c 24 28       	mov    %rbp,0x28(%rsp)
  22:	48 8b 84 24 08 01 00 	mov    0x108(%rsp),%rax
  29:	00
* 2a:	42 80 3c 28 00       	cmpb   $0x0,(%rax,%r13,1) <-- trapping instruction
  2f:	74 0d                	je     0x3e
  31:	48 8b bc 24 f8 00 00 	mov    0xf8(%rsp),%rdi
  38:	00
  39:	e8 b6 f7 2c fd       	call   0xfd2cf7f4
  3e:	4c                   	rex.WR
  3f:	89                   	.byte 0x89