general protection fault, probably for non-canonical address 0xdffffc000000044c: 0000 [#1] PREEMPT SMP KASAN PTI
KASAN: probably user-memory-access in range [0x0000000000002260-0x0000000000002267]
CPU: 0 PID: 2432 Comm: kworker/u4:7 Not tainted 6.8.0-rc6-syzkaller-00278-g58c806d867bf #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
Workqueue: events_unbound flush_to_ldisc
RIP: 0010:n_tty_receive_buf_common+0x136/0x12c0 drivers/tty/n_tty.c:1708
Code: 00 45 31 ed 48 89 8c 24 e0 00 00 00 48 c1 e9 03 48 89 8c 24 e8 00 00 00 48 89 5c 24 68 4c 89 6c 24 08 48 8b 84 24 e8 00 00 00 <42> 80 3c 30 00 74 0d 48 8b bc 24 e0 00 00 00 e8 b6 0b d5 fc 4c 89
RSP: 0018:ffffc9000a3e79e8 EFLAGS: 00010202
RAX: 000000000000044c RBX: ffff88801110a438 RCX: 000000000000044c
RDX: 0000000000000001 RSI: 0000000000000008 RDI: 0000000000000001
RBP: 0000000000000000 R08: ffff88801110a287 R09: 1ffff11002221450
R10: dffffc0000000000 R11: ffffed1002221451 R12: ffff888031edd020
R13: 0000000000000000 R14: dffffc0000000000 R15: ffff888031edd020
FS:  0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe3ecf01d58 CR3: 000000001ec0a000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 tty_port_default_receive_buf+0x6d/0xa0 drivers/tty/tty_port.c:37
 receive_buf drivers/tty/tty_buffer.c:444 [inline]
 flush_to_ldisc+0x328/0x860 drivers/tty/tty_buffer.c:494
 process_one_work kernel/workqueue.c:2633 [inline]
 process_scheduled_works+0x913/0x1420 kernel/workqueue.c:2706
 worker_thread+0xa5f/0x1000 kernel/workqueue.c:2787
 kthread+0x2ef/0x390 kernel/kthread.c:388
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:243
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:n_tty_receive_buf_common+0x136/0x12c0 drivers/tty/n_tty.c:1708
Code: 00 45 31 ed 48 89 8c 24 e0 00 00 00 48 c1 e9 03 48 89 8c 24 e8 00 00 00 48 89 5c 24 68 4c 89 6c 24 08 48 8b 84 24 e8 00 00 00 <42> 80 3c 30 00 74 0d 48 8b bc 24 e0 00 00 00 e8 b6 0b d5 fc 4c 89
RSP: 0018:ffffc9000a3e79e8 EFLAGS: 00010202
RAX: 000000000000044c RBX: ffff88801110a438 RCX: 000000000000044c
RDX: 0000000000000001 RSI: 0000000000000008 RDI: 0000000000000001
RBP: 0000000000000000 R08: ffff88801110a287 R09: 1ffff11002221450
R10: dffffc0000000000 R11: ffffed1002221451 R12: ffff888031edd020
R13: 0000000000000000 R14: dffffc0000000000 R15: ffff888031edd020
FS:  0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b31c21000 CR3: 00000000233f6000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	00 45 31             	add    %al,0x31(%rbp)
   3:	ed                   	in     (%dx),%eax
   4:	48 89 8c 24 e0 00 00 	mov    %rcx,0xe0(%rsp)
   b:	00
   c:	48 c1 e9 03          	shr    $0x3,%rcx
  10:	48 89 8c 24 e8 00 00 	mov    %rcx,0xe8(%rsp)
  17:	00
  18:	48 89 5c 24 68       	mov    %rbx,0x68(%rsp)
  1d:	4c 89 6c 24 08       	mov    %r13,0x8(%rsp)
  22:	48 8b 84 24 e8 00 00 	mov    0xe8(%rsp),%rax
  29:	00
* 2a:	42 80 3c 30 00       	cmpb   $0x0,(%rax,%r14,1) <-- trapping instruction
  2f:	74 0d                	je     0x3e
  31:	48 8b bc 24 e0 00 00 	mov    0xe0(%rsp),%rdi
  38:	00
  39:	e8 b6 0b d5 fc       	call   0xfcd50bf4
  3e:	4c                   	rex.WR
  3f:	89                   	.byte 0x89