BUG: unable to handle page fault for address: ffff888001000030
#PF: supervisor write access in kernel mode
#PF: error_code(0x0003) - permissions violation
PGD f001067 P4D f001067 PUD f002067 PMD 80000000010001e1 
Oops: 0003 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 5969 Comm: syz-executor.5 Not tainted 5.11.0-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:75 [inline]
RIP: 0010:bitfill_aligned+0xf1/0x150 drivers/video/fbdev/core/cfbfillrect.c:35
Code: 8d 4b 38 48 89 6b 30 48 83 c3 40 48 89 29 48 39 da 75 d5 44 89 c0 83 e0 07 85 c0 74 5f 89 c0 48 8d 14 c3 48 89 d8 48 83 c3 08 <48> 89 28 48 39 d3 75 f1 48 85 f6 0f 84 77 ff ff ff 48 8b 02 48 31
RSP: 0018:ffffc900020674f0 EFLAGS: 00010282
RAX: ffff888001000030 RBX: ffff888001000038 RCX: 0000000000000000
RDX: ffff888001000040 RSI: 0000000000000000 RDI: ffff8880190de000
RBP: 0000000000000000 R08: 0000000000000002 R09: 0000000000000040
R10: ffffed100332c063 R11: ffffffff8eeded80 R12: 0000000000000000
R13: ffffffffffffffff R14: 0000000000000080 R15: 0000000000000006
FS:  00007f409b538700(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff888001000030 CR3: 000000002bec1000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 cfb_fillrect+0x402/0x710 drivers/video/fbdev/core/cfbfillrect.c:327
 bit_clear_margins+0x299/0x4b0 drivers/video/fbdev/core/bitblit.c:224
 fbcon_switch+0x8d9/0x1480 drivers/video/fbdev/core/fbcon.c:2151
 redraw_screen+0x25c/0x6e0 drivers/tty/vt/vt.c:1021
 vc_do_resize+0xc2a/0xee0 drivers/tty/vt/vt.c:1326
 fbcon_do_set_font+0x3bd/0x8b0 drivers/video/fbdev/core/fbcon.c:2402
 con_font_set drivers/tty/vt/vt.c:4667 [inline]
 con_font_op+0x767/0xd30 drivers/tty/vt/vt.c:4711
 vt_k_ioctl drivers/tty/vt/vt_ioctl.c:472 [inline]
 vt_ioctl+0x16d8/0x20f0 drivers/tty/vt/vt_ioctl.c:813
 tty_ioctl+0x4f3/0x1340 drivers/tty/tty_io.c:2675
 vfs_ioctl fs/ioctl.c:48 [inline]
 __do_sys_ioctl fs/ioctl.c:753 [inline]
 __se_sys_ioctl fs/ioctl.c:739 [inline]
 __x64_sys_ioctl+0x11f/0x190 fs/ioctl.c:739
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7f409bde3af9
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:00007f409b538188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f409bef7028 RCX: 00007f409bde3af9
RDX: 0000000020000400 RSI: 0000000000004b72 RDI: 0000000000000004
RBP: 00007f409be3dff7 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffea4eeea1f R14: 00007f409b538300 R15: 0000000000022000
Modules linked in:
CR2: ffff888001000030
---[ end trace e08de0f597fcdd6e ]---
RIP: 0010:__writeq arch/x86/include/asm/io.h:98 [inline]
RIP: 0010:bitfill_aligned drivers/video/fbdev/core/cfbfillrect.c:75 [inline]
RIP: 0010:bitfill_aligned+0xf1/0x150 drivers/video/fbdev/core/cfbfillrect.c:35
Code: 8d 4b 38 48 89 6b 30 48 83 c3 40 48 89 29 48 39 da 75 d5 44 89 c0 83 e0 07 85 c0 74 5f 89 c0 48 8d 14 c3 48 89 d8 48 83 c3 08 <48> 89 28 48 39 d3 75 f1 48 85 f6 0f 84 77 ff ff ff 48 8b 02 48 31
RSP: 0018:ffffc900020674f0 EFLAGS: 00010282
RAX: ffff888001000030 RBX: ffff888001000038 RCX: 0000000000000000
RDX: ffff888001000040 RSI: 0000000000000000 RDI: ffff8880190de000
RBP: 0000000000000000 R08: 0000000000000002 R09: 0000000000000040
R10: ffffed100332c063 R11: ffffffff8eeded80 R12: 0000000000000000
R13: ffffffffffffffff R14: 0000000000000080 R15: 0000000000000006
FS:  00007f409b538700(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff888001000030 CR3: 000000002bec1000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	8d 4b 38             	lea    0x38(%rbx),%ecx
   3:	48 89 6b 30          	mov    %rbp,0x30(%rbx)
   7:	48 83 c3 40          	add    $0x40,%rbx
   b:	48 89 29             	mov    %rbp,(%rcx)
   e:	48 39 da             	cmp    %rbx,%rdx
  11:	75 d5                	jne    0xffffffe8
  13:	44 89 c0             	mov    %r8d,%eax
  16:	83 e0 07             	and    $0x7,%eax
  19:	85 c0                	test   %eax,%eax
  1b:	74 5f                	je     0x7c
  1d:	89 c0                	mov    %eax,%eax
  1f:	48 8d 14 c3          	lea    (%rbx,%rax,8),%rdx
  23:	48 89 d8             	mov    %rbx,%rax
  26:	48 83 c3 08          	add    $0x8,%rbx
* 2a:	48 89 28             	mov    %rbp,(%rax) <-- trapping instruction
  2d:	48 39 d3             	cmp    %rdx,%rbx
  30:	75 f1                	jne    0x23
  32:	48 85 f6             	test   %rsi,%rsi
  35:	0f 84 77 ff ff ff    	je     0xffffffb2
  3b:	48 8b 02             	mov    (%rdx),%rax
  3e:	48                   	rex.W
  3f:	31                   	.byte 0x31