BUG: unable to handle page fault for address: ffff888001000000
#PF: supervisor write access in kernel mode
#PF: error_code(0x0003) - permissions violation
PGD 11201067 P4D 11201067 PUD 11202067 PMD 80000000010001e1 
Oops: 0003 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 26834 Comm: syz-executor.0 Not tainted 5.16.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__writeq arch/x86/include/asm/io.h:98 [inline]
RIP: 0010:bitfill_aligned+0x18b/0x270 drivers/video/fbdev/core/cfbfillrect.c:71
Code: 00 00 89 c6 e8 36 08 1b fd 83 fd 07 76 37 90 4c 89 33 4c 89 73 08 4c 89 73 10 4c 89 73 18 4c 89 73 20 4c 89 73 28 4c 89 73 30 <4c> 89 73 38 83 c5 f8 83 fd 07 76 16 48 83 c3 38 e8 f0 03 1b fd 48
RSP: 0018:ffffc9000a7b7178 EFLAGS: 00010202
RAX: 0000000000000002 RBX: ffff888000ffffc8 RCX: 0000000000040000
RDX: ffff88806ad0d700 RSI: 000000000000000f RDI: 0000000000000007
RBP: 000000000000000f R08: ffffffff846987ea R09: 0000000000000040
R10: 0000000000000002 R11: ffff88806ad0d700 R12: ffffffffffffffff
R13: 00000000000003c0 R14: 0000000000000000 R15: 0000000000000000
FS:  00007fd20937c700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff888001000000 CR3: 0000000078a71000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 cfb_fillrect+0x5d8/0x800 drivers/video/fbdev/core/cfbfillrect.c:327
 bit_clear_margins+0x2d7/0x6e0 drivers/video/fbdev/core/bitblit.c:209
 fbcon_clear_margins drivers/video/fbdev/core/fbcon.c:1296 [inline]
 fbcon_switch+0x1569/0x21f0 drivers/video/fbdev/core/fbcon.c:1677
 redraw_screen+0x53d/0x1280 drivers/tty/vt/vt.c:1021
 vc_do_resize+0x1361/0x1930 drivers/tty/vt/vt.c:1342
 vt_resizex drivers/tty/vt/vt_ioctl.c:718 [inline]
 vt_ioctl+0x2ed4/0x3860 drivers/tty/vt/vt_ioctl.c:936
 tty_ioctl+0xfb2/0x17d0 drivers/tty/tty_io.c:2805
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:874 [inline]
 __se_sys_ioctl+0xfb/0x170 fs/ioctl.c:860
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7fd20aa06e99
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fd20937c168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fd20ab19f60 RCX: 00007fd20aa06e99
RDX: 0000000020000000 RSI: 000000000000560a RDI: 0000000000000003
RBP: 00007fd20aa60ff1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc80638f8f R14: 00007fd20937c300 R15: 0000000000022000
 </TASK>
Modules linked in:
CR2: ffff888001000000
---[ end trace 2eaa6dd9beb8f865 ]---
RIP: 0010:__writeq arch/x86/include/asm/io.h:98 [inline]
RIP: 0010:bitfill_aligned+0x18b/0x270 drivers/video/fbdev/core/cfbfillrect.c:71
Code: 00 00 89 c6 e8 36 08 1b fd 83 fd 07 76 37 90 4c 89 33 4c 89 73 08 4c 89 73 10 4c 89 73 18 4c 89 73 20 4c 89 73 28 4c 89 73 30 <4c> 89 73 38 83 c5 f8 83 fd 07 76 16 48 83 c3 38 e8 f0 03 1b fd 48
RSP: 0018:ffffc9000a7b7178 EFLAGS: 00010202
RAX: 0000000000000002 RBX: ffff888000ffffc8 RCX: 0000000000040000
RDX: ffff88806ad0d700 RSI: 000000000000000f RDI: 0000000000000007
RBP: 000000000000000f R08: ffffffff846987ea R09: 0000000000000040
R10: 0000000000000002 R11: ffff88806ad0d700 R12: ffffffffffffffff
R13: 00000000000003c0 R14: 0000000000000000 R15: 0000000000000000
FS:  00007fd20937c700(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff888001000000 CR3: 0000000078a71000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	00 00                	add    %al,(%rax)
   2:	89 c6                	mov    %eax,%esi
   4:	e8 36 08 1b fd       	callq  0xfd1b083f
   9:	83 fd 07             	cmp    $0x7,%ebp
   c:	76 37                	jbe    0x45
   e:	90                   	nop
   f:	4c 89 33             	mov    %r14,(%rbx)
  12:	4c 89 73 08          	mov    %r14,0x8(%rbx)
  16:	4c 89 73 10          	mov    %r14,0x10(%rbx)
  1a:	4c 89 73 18          	mov    %r14,0x18(%rbx)
  1e:	4c 89 73 20          	mov    %r14,0x20(%rbx)
  22:	4c 89 73 28          	mov    %r14,0x28(%rbx)
  26:	4c 89 73 30          	mov    %r14,0x30(%rbx)
* 2a:	4c 89 73 38          	mov    %r14,0x38(%rbx) <-- trapping instruction
  2e:	83 c5 f8             	add    $0xfffffff8,%ebp
  31:	83 fd 07             	cmp    $0x7,%ebp
  34:	76 16                	jbe    0x4c
  36:	48 83 c3 38          	add    $0x38,%rbx
  3a:	e8 f0 03 1b fd       	callq  0xfd1b042f
  3f:	48                   	rex.W