BUG: unable to handle page fault for address: ffff888001000000
#PF: supervisor write access in kernel mode
#PF: error_code(0x0003) - permissions violation
PGD 10a01067 P4D 10a01067 PUD 10a02067 PMD 80000000010001e1 
Oops: 0003 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 11144 Comm: syz-executor.1 Not tainted 5.15.0-rc4-next-20211008-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 drivers/video/fbdev/core/cfbfillrect.c:67 [inline]
RIP: 0010:bitfill_aligned+0x14d/0x240 drivers/video/fbdev/core/cfbfillrect.c:35
Code: 00 f7 f5 41 89 c4 89 c6 41 89 c5 e8 8d 42 56 fd 41 83 fc 07 76 5f 4c 89 f5 e8 8f 3e 56 fd 48 89 5d 00 48 89 5d 08 48 89 5d 10 <48> 89 5d 18 48 89 5d 20 48 89 5d 28 48 8d 45 38 48 89 5d 30 48 83
RSP: 0018:ffffc900054175c8 EFLAGS: 00010246
RAX: 0000000000040000 RBX: 0000000000000000 RCX: ffffc9000bc89000
RDX: 0000000000040000 RSI: ffffffff84203791 RDI: 0000000000000003
RBP: ffff888000ffffe8 R08: 0000000000000007 R09: 0000000000000040
R10: ffffffff842037c9 R11: 0000000000000000 R12: 000000000000003b
R13: 0000000000000033 R14: ffff888000ffffa8 R15: 0000000000000000
FS:  00007f15bfe08700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff888001000000 CR3: 0000000033680000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 cfb_fillrect+0x434/0x800 drivers/video/fbdev/core/cfbfillrect.c:327
 vga16fb_fillrect+0x781/0x2000 drivers/video/fbdev/vga16fb.c:951
 bit_clear_margins+0x3f6/0x4b0 drivers/video/fbdev/core/bitblit.c:224
 fbcon_clear_margins+0x1f1/0x280 drivers/video/fbdev/core/fbcon.c:1315
 fbcon_switch+0xa8c/0x1620 drivers/video/fbdev/core/fbcon.c:2146
 redraw_screen+0x2b9/0x740 drivers/tty/vt/vt.c:1021
 vc_do_resize+0xee5/0x1180 drivers/tty/vt/vt.c:1342
 vt_resizex drivers/tty/vt/vt_ioctl.c:718 [inline]
 vt_ioctl+0xd48/0x2b10 drivers/tty/vt/vt_ioctl.c:936
 tty_ioctl+0xbbd/0x1670 drivers/tty/tty_io.c:2805
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:874 [inline]
 __se_sys_ioctl fs/ioctl.c:860 [inline]
 __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:860
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f15c28918d9
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:00007f15bfe08188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f15c2995f60 RCX: 00007f15c28918d9
RDX: 0000000020000140 RSI: 000000000000560a RDI: 0000000000000003
RBP: 00007f15c28ebcb4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd4553310f R14: 00007f15bfe08300 R15: 0000000000022000
 </TASK>
Modules linked in:
CR2: ffff888001000000
---[ end trace 353b2bb362525976 ]---
RIP: 0010:__writeq arch/x86/include/asm/io.h:98 [inline]
RIP: 0010:bitfill_aligned drivers/video/fbdev/core/cfbfillrect.c:67 [inline]
RIP: 0010:bitfill_aligned+0x14d/0x240 drivers/video/fbdev/core/cfbfillrect.c:35
Code: 00 f7 f5 41 89 c4 89 c6 41 89 c5 e8 8d 42 56 fd 41 83 fc 07 76 5f 4c 89 f5 e8 8f 3e 56 fd 48 89 5d 00 48 89 5d 08 48 89 5d 10 <48> 89 5d 18 48 89 5d 20 48 89 5d 28 48 8d 45 38 48 89 5d 30 48 83
RSP: 0018:ffffc900054175c8 EFLAGS: 00010246
RAX: 0000000000040000 RBX: 0000000000000000 RCX: ffffc9000bc89000
RDX: 0000000000040000 RSI: ffffffff84203791 RDI: 0000000000000003
RBP: ffff888000ffffe8 R08: 0000000000000007 R09: 0000000000000040
R10: ffffffff842037c9 R11: 0000000000000000 R12: 000000000000003b
R13: 0000000000000033 R14: ffff888000ffffa8 R15: 0000000000000000
FS:  00007f15bfe08700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff888001000000 CR3: 0000000033680000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
   0:	00 f7                	add    %dh,%bh
   2:	f5                   	cmc
   3:	41 89 c4             	mov    %eax,%r12d
   6:	89 c6                	mov    %eax,%esi
   8:	41 89 c5             	mov    %eax,%r13d
   b:	e8 8d 42 56 fd       	callq  0xfd56429d
  10:	41 83 fc 07          	cmp    $0x7,%r12d
  14:	76 5f                	jbe    0x75
  16:	4c 89 f5             	mov    %r14,%rbp
  19:	e8 8f 3e 56 fd       	callq  0xfd563ead
  1e:	48 89 5d 00          	mov    %rbx,0x0(%rbp)
  22:	48 89 5d 08          	mov    %rbx,0x8(%rbp)
  26:	48 89 5d 10          	mov    %rbx,0x10(%rbp)
* 2a:	48 89 5d 18          	mov    %rbx,0x18(%rbp) <-- trapping instruction
  2e:	48 89 5d 20          	mov    %rbx,0x20(%rbp)
  32:	48 89 5d 28          	mov    %rbx,0x28(%rbp)
  36:	48 8d 45 38          	lea    0x38(%rbp),%rax
  3a:	48 89 5d 30          	mov    %rbx,0x30(%rbp)
  3e:	48                   	rex.W
  3f:	83                   	.byte 0x83