BUG: unable to handle kernel paging request at ffff888001000000
PGD de01067 P4D de01067 PUD de02067 PMD 80000000010001e1 
Oops: 0003 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 6213 Comm: syz-executor.3 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
RIP: 0010:writeb arch/x86/include/asm/io.h:65 [inline]
RIP: 0010:vga16fb_fillrect+0x9c0/0x1940 drivers/video/fbdev/vga16fb.c:923
Code: c3 fd 48 63 44 24 10 45 31 f6 48 89 04 24 e8 c7 d3 c3 fd 31 ff 89 de 31 ed e8 2c d5 c3 fd 85 db 4d 89 ec 74 22 e8 b0 d3 c3 fd <45> 88 34 24 83 c5 01 89 df 49 83 c4 01 89 ee e8 8c d4 c3 fd 39 eb
RSP: 0018:ffff88823af3f578 EFLAGS: 00010246
RAX: 0000000000040000 RBX: 00000000000000ef RCX: ffffc9000814a000
RDX: 0000000000040000 RSI: ffffffff839eb1c0 RDI: 0000000000000004
RBP: 000000000000005f R08: 0000000000000001 R09: 00000000000000ef
R10: 0000000000000004 R11: 0000000000000000 R12: ffff888001000000
R13: ffff888000ffffa1 R14: 0000000000000000 R15: 000000001ffef999
FS:  00007f388e86a700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff888001000000 CR3: 00000002241dd000 CR4: 00000000003426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 bit_clear_margins+0x3f6/0x4b0 drivers/video/fbdev/core/bitblit.c:224
 fbcon_clear_margins+0x1e2/0x350 drivers/video/fbdev/core/fbcon.c:1288
 fbcon_switch+0xf0d/0x1ba0 drivers/video/fbdev/core/fbcon.c:2155
 redraw_screen+0x37d/0x870 drivers/tty/vt/vt.c:1015
 vc_do_resize+0x1145/0x1440 drivers/tty/vt/vt.c:1341
 vt_ioctl+0x1e0e/0x2380 drivers/tty/vt/vt_ioctl.c:908
 tty_ioctl+0x5b0/0x1630 drivers/tty/tty_io.c:2669
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:501 [inline]
 do_vfs_ioctl+0xcdb/0x12e0 fs/ioctl.c:688
 ksys_ioctl+0x9b/0xc0 fs/ioctl.c:705
 __do_sys_ioctl fs/ioctl.c:712 [inline]
 __se_sys_ioctl fs/ioctl.c:710 [inline]
 __x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:710
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f38902f80f9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 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 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f388e86a168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f3890417f80 RCX: 00007f38902f80f9
RDX: 0000000020000000 RSI: 000000000000560a RDI: 0000000000000003
RBP: 00007f3890353ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd70d505ff R14: 00007f388e86a300 R15: 0000000000022000
Modules linked in:
CR2: ffff888001000000
---[ end trace 5f080f03873bf007 ]---
RIP: 0010:writeb arch/x86/include/asm/io.h:65 [inline]
RIP: 0010:vga16fb_fillrect+0x9c0/0x1940 drivers/video/fbdev/vga16fb.c:923
Code: c3 fd 48 63 44 24 10 45 31 f6 48 89 04 24 e8 c7 d3 c3 fd 31 ff 89 de 31 ed e8 2c d5 c3 fd 85 db 4d 89 ec 74 22 e8 b0 d3 c3 fd <45> 88 34 24 83 c5 01 89 df 49 83 c4 01 89 ee e8 8c d4 c3 fd 39 eb
RSP: 0018:ffff88823af3f578 EFLAGS: 00010246
RAX: 0000000000040000 RBX: 00000000000000ef RCX: ffffc9000814a000
RDX: 0000000000040000 RSI: ffffffff839eb1c0 RDI: 0000000000000004
RBP: 000000000000005f R08: 0000000000000001 R09: 00000000000000ef
R10: 0000000000000004 R11: 0000000000000000 R12: ffff888001000000
R13: ffff888000ffffa1 R14: 0000000000000000 R15: 000000001ffef999
FS:  00007f388e86a700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff888001000000 CR3: 00000002241dd000 CR4: 00000000003426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	c3                   	retq
   1:	fd                   	std
   2:	48 63 44 24 10       	movslq 0x10(%rsp),%rax
   7:	45 31 f6             	xor    %r14d,%r14d
   a:	48 89 04 24          	mov    %rax,(%rsp)
   e:	e8 c7 d3 c3 fd       	callq  0xfdc3d3da
  13:	31 ff                	xor    %edi,%edi
  15:	89 de                	mov    %ebx,%esi
  17:	31 ed                	xor    %ebp,%ebp
  19:	e8 2c d5 c3 fd       	callq  0xfdc3d54a
  1e:	85 db                	test   %ebx,%ebx
  20:	4d 89 ec             	mov    %r13,%r12
  23:	74 22                	je     0x47
  25:	e8 b0 d3 c3 fd       	callq  0xfdc3d3da
* 2a:	45 88 34 24          	mov    %r14b,(%r12) <-- trapping instruction
  2e:	83 c5 01             	add    $0x1,%ebp
  31:	89 df                	mov    %ebx,%edi
  33:	49 83 c4 01          	add    $0x1,%r12
  37:	89 ee                	mov    %ebp,%esi
  39:	e8 8c d4 c3 fd       	callq  0xfdc3d4ca
  3e:	39 eb                	cmp    %ebp,%ebx