BUG: unable to handle page fault for address: ffff888001000000
#PF: supervisor write access in kernel mode
#PF: error_code(0x0003) - permissions violation
PGD fc01067 P4D fc01067 PUD fc02067 PMD 80000000010001e1 
Oops: 0003 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 18131 Comm: syz-executor.4 Not tainted 5.10.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__writel arch/x86/include/asm/io.h:71 [inline]
RIP: 0010:fast_imageblit drivers/video/fbdev/core/cfbimgblt.c:257 [inline]
RIP: 0010:cfb_imageblit+0x612/0x1010 drivers/video/fbdev/core/cfbimgblt.c:300
Code: b6 34 31 48 89 c1 83 e1 07 83 c1 03 40 38 f1 7c 09 40 84 f6 0f 85 a9 08 00 00 8b 4c 24 40 4d 8d 6f 04 23 08 8b 44 24 0c 31 c8 <41> 89 07 31 ff 44 89 e6 e8 51 01 8a fd 45 85 e4 75 0f e8 f7 08 8a
RSP: 0018:ffffc9000c20f718 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff8881434f0bc0 RCX: 0000000000000000
RDX: 0000000000040000 RSI: 0000000000000000 RDI: ffffffff89a3d640
RBP: 000000000000000c R08: 0000000000000520 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000004
R13: ffff888001000004 R14: dffffc0000000000 R15: ffff888001000000
FS:  0000000000000000(0000) GS:ffff8880b9f00000(0063) knlGS:00000000f5520b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: ffff888001000000 CR3: 0000000010df7000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 vga_imageblit_expand drivers/video/fbdev/vga16fb.c:1207 [inline]
 vga16fb_imageblit+0x693/0x2210 drivers/video/fbdev/vga16fb.c:1260
 bit_putcs_unaligned drivers/video/fbdev/core/bitblit.c:139 [inline]
 bit_putcs+0x6e1/0xd20 drivers/video/fbdev/core/bitblit.c:188
 fbcon_putcs+0x35a/0x450 drivers/video/fbdev/core/fbcon.c:1306
 con_flush drivers/tty/vt/vt.c:2577 [inline]
 vc_con_write_normal drivers/tty/vt/vt.c:2808 [inline]
 do_con_write+0xfab/0x1dd0 drivers/tty/vt/vt.c:2915
 con_write+0x22/0xb0 drivers/tty/vt/vt.c:3255
 process_output_block drivers/tty/n_tty.c:595 [inline]
 n_tty_write+0x3ce/0xf80 drivers/tty/n_tty.c:2333
 do_tty_write drivers/tty/tty_io.c:962 [inline]
 tty_write+0x4d9/0x870 drivers/tty/tty_io.c:1046
 vfs_write+0x28e/0xa30 fs/read_write.c:603
 ksys_write+0x12d/0x250 fs/read_write.c:658
 do_syscall_32_irqs_on arch/x86/entry/common.c:78 [inline]
 __do_fast_syscall_32+0x56/0x80 arch/x86/entry/common.c:137
 do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:160
 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c
RIP: 0023:0xf7f26549
Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 002b:00000000f55200cc EFLAGS: 00000296 ORIG_RAX: 0000000000000004
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000020000000
RDX: 0000000000001006 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Modules linked in:
CR2: ffff888001000000
---[ end trace 24d7696c521b86ff ]---
RIP: 0010:__writel arch/x86/include/asm/io.h:71 [inline]
RIP: 0010:fast_imageblit drivers/video/fbdev/core/cfbimgblt.c:257 [inline]
RIP: 0010:cfb_imageblit+0x612/0x1010 drivers/video/fbdev/core/cfbimgblt.c:300
Code: b6 34 31 48 89 c1 83 e1 07 83 c1 03 40 38 f1 7c 09 40 84 f6 0f 85 a9 08 00 00 8b 4c 24 40 4d 8d 6f 04 23 08 8b 44 24 0c 31 c8 <41> 89 07 31 ff 44 89 e6 e8 51 01 8a fd 45 85 e4 75 0f e8 f7 08 8a
RSP: 0018:ffffc9000c20f718 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff8881434f0bc0 RCX: 0000000000000000
RDX: 0000000000040000 RSI: 0000000000000000 RDI: ffffffff89a3d640
RBP: 000000000000000c R08: 0000000000000520 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000004
R13: ffff888001000004 R14: dffffc0000000000 R15: ffff888001000000
FS:  0000000000000000(0000) GS:ffff8880b9f00000(0063) knlGS:00000000f5520b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: ffff888001000000 CR3: 0000000010df7000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400