BUG: unable to handle page fault for address: 00000000ffffffd4
#PF: supervisor write access in kernel mode
#PF: error_code(0x0002) - not-present page
PGD 9fa71067 P4D 9fa71067 PUD 0 
Oops: 0002 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 20210 Comm: syz-executor.3 Not tainted 5.5.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:memset16 arch/x86/include/asm/string_64.h:25 [inline]
RIP: 0010:scr_memsetw include/linux/vt_buffer.h:36 [inline]
RIP: 0010:csi_J+0x2bf/0xb00 drivers/tty/vt/vt.c:1529
Code: ff df 43 8d 4c 2d 00 48 89 fa 48 c1 ea 03 0f b6 04 02 84 c0 74 08 3c 01 0f 8e af 06 00 00 0f b7 83 c8 03 00 00 d1 e9 4c 89 e7 <f3> 66 ab 48 89 df e8 46 f2 ff ff 31 ff 41 89 c6 89 c6 e8 5a a9 88
RSP: 0018:ffffc900049b7860 EFLAGS: 00010206
RAX: 0000000000000720 RBX: ffff888095417000 RCX: 000000000000001e
RDX: 1ffff11012a82e79 RSI: ffffffff83ec4d16 RDI: 00000000ffffffd4
RBP: ffffc900049b78a0 R08: ffff888091b4c600 R09: ffff888091b4ce90
R10: fffffbfff14f69b0 R11: ffffffff8a7b4d87 R12: 00000000ffffffd4
R13: 7fffffff8000001e R14: 0000000000000011 R15: 0000000000000000
FS:  00007f9f629b7700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000ffffffd4 CR3: 000000004e44d000 CR4: 00000000001426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 do_con_trol+0x50cc/0x61b0 drivers/tty/vt/vt.c:2367
 do_con_write.part.0+0xfd9/0x1ef0 drivers/tty/vt/vt.c:2797
 do_con_write drivers/tty/vt/vt.c:2565 [inline]
 con_write+0x46/0xd0 drivers/tty/vt/vt.c:3135
 process_output_block drivers/tty/n_tty.c:595 [inline]
 n_tty_write+0x40e/0x1080 drivers/tty/n_tty.c:2333
 do_tty_write drivers/tty/tty_io.c:962 [inline]
 tty_write+0x496/0x7f0 drivers/tty/tty_io.c:1046
 __vfs_write+0x8a/0x110 fs/read_write.c:494
 vfs_write+0x268/0x5d0 fs/read_write.c:558
 ksys_write+0x14f/0x290 fs/read_write.c:611
 __do_sys_write fs/read_write.c:623 [inline]
 __se_sys_write fs/read_write.c:620 [inline]
 __x64_sys_write+0x73/0xb0 fs/read_write.c:620
 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45aff9
Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f9f629b6c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f9f629b76d4 RCX: 000000000045aff9
RDX: 0000000000000078 RSI: 0000000020000000 RDI: 0000000000000005
RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000c60 R14: 00000000004cd0b9 R15: 000000000075bfd4
Modules linked in:
CR2: 00000000ffffffd4
---[ end trace 64b429d3f67e9c40 ]---
RIP: 0010:memset16 arch/x86/include/asm/string_64.h:25 [inline]
RIP: 0010:scr_memsetw include/linux/vt_buffer.h:36 [inline]
RIP: 0010:csi_J+0x2bf/0xb00 drivers/tty/vt/vt.c:1529
Code: ff df 43 8d 4c 2d 00 48 89 fa 48 c1 ea 03 0f b6 04 02 84 c0 74 08 3c 01 0f 8e af 06 00 00 0f b7 83 c8 03 00 00 d1 e9 4c 89 e7 <f3> 66 ab 48 89 df e8 46 f2 ff ff 31 ff 41 89 c6 89 c6 e8 5a a9 88
RSP: 0018:ffffc900049b7860 EFLAGS: 00010206
RAX: 0000000000000720 RBX: ffff888095417000 RCX: 000000000000001e
RDX: 1ffff11012a82e79 RSI: ffffffff83ec4d16 RDI: 00000000ffffffd4
RBP: ffffc900049b78a0 R08: ffff888091b4c600 R09: ffff888091b4ce90
R10: fffffbfff14f69b0 R11: ffffffff8a7b4d87 R12: 00000000ffffffd4
R13: 7fffffff8000001e R14: 0000000000000011 R15: 0000000000000000
FS:  00007f9f629b7700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2de28000 CR3: 000000004e44d000 CR4: 00000000001426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400