Oops: general protection fault, probably for non-canonical address 0xdffffc000000044c: 0000 [#1] PREEMPT SMP KASAN NOPTI
KASAN: probably user-memory-access in range [0x0000000000002260-0x0000000000002267]
CPU: 0 UID: 0 PID: 12426 Comm: kworker/u32:41 Not tainted 6.14.0-rc1-syzkaller-00081-gbb066fe812d6 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Workqueue: events_unbound flush_to_ldisc
RIP: 0010:n_tty_receive_buf_common+0xf3/0x1980 drivers/tty/n_tty.c:1718
Code: 00 48 89 74 24 60 4a 8d 3c 39 4a 8d 34 3a 48 89 7c 24 70 48 89 74 24 68 48 89 84 24 a0 00 00 00 e8 12 fd 82 fc 48 8b 44 24 68 <80> 38 00 0f 85 b3 15 00 00 48 8b 44 24 18 48 8b a8 60 22 00 00 48
RSP: 0018:ffffc9000d19fa68 EFLAGS: 00010293
RAX: dffffc000000044c RBX: 0000000000000001 RCX: 0000000000000000
RDX: ffff8880553e4880 RSI: ffffffff8536d4fe RDI: dffffc0000000000
RBP: 0000000000000005 R08: 0000000000000001 R09: ffffed1009c89c50
R10: ffff88804e44e287 R11: 0000000000000004 R12: ffffffff8536eda0
R13: 0000000000000000 R14: ffff88804e44e000 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff88806a600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000002a0d0000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 000000000000000c DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 tty_ldisc_receive_buf+0xa2/0x190 drivers/tty/tty_buffer.c:387
 tty_port_default_receive_buf+0x70/0xb0 drivers/tty/tty_port.c:37
 receive_buf drivers/tty/tty_buffer.c:445 [inline]
 flush_to_ldisc+0x264/0x780 drivers/tty/tty_buffer.c:495
 process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3236
 process_scheduled_works kernel/workqueue.c:3317 [inline]
 worker_thread+0x6c8/0xf00 kernel/workqueue.c:3398
 kthread+0x3af/0x750 kernel/kthread.c:464
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:n_tty_receive_buf_common+0xf3/0x1980 drivers/tty/n_tty.c:1718
Code: 00 48 89 74 24 60 4a 8d 3c 39 4a 8d 34 3a 48 89 7c 24 70 48 89 74 24 68 48 89 84 24 a0 00 00 00 e8 12 fd 82 fc 48 8b 44 24 68 <80> 38 00 0f 85 b3 15 00 00 48 8b 44 24 18 48 8b a8 60 22 00 00 48
RSP: 0018:ffffc9000d19fa68 EFLAGS: 00010293
RAX: dffffc000000044c RBX: 0000000000000001 RCX: 0000000000000000
RDX: ffff8880553e4880 RSI: ffffffff8536d4fe RDI: dffffc0000000000
RBP: 0000000000000005 R08: 0000000000000001 R09: ffffed1009c89c50
R10: ffff88804e44e287 R11: 0000000000000004 R12: ffffffff8536eda0
R13: 0000000000000000 R14: ffff88804e44e000 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff88806a600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000119d66000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 000000000000000a DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess), 1 bytes skipped:
   0:	48 89 74 24 60       	mov    %rsi,0x60(%rsp)
   5:	4a 8d 3c 39          	lea    (%rcx,%r15,1),%rdi
   9:	4a 8d 34 3a          	lea    (%rdx,%r15,1),%rsi
   d:	48 89 7c 24 70       	mov    %rdi,0x70(%rsp)
  12:	48 89 74 24 68       	mov    %rsi,0x68(%rsp)
  17:	48 89 84 24 a0 00 00 	mov    %rax,0xa0(%rsp)
  1e:	00
  1f:	e8 12 fd 82 fc       	call   0xfc82fd36
  24:	48 8b 44 24 68       	mov    0x68(%rsp),%rax
* 29:	80 38 00             	cmpb   $0x0,(%rax) <-- trapping instruction
  2c:	0f 85 b3 15 00 00    	jne    0x15e5
  32:	48 8b 44 24 18       	mov    0x18(%rsp),%rax
  37:	48 8b a8 60 22 00 00 	mov    0x2260(%rax),%rbp
  3e:	48                   	rex.W