BUG: unable to handle page fault for address: ffff888001000018
#PF: supervisor write access in kernel mode
#PF: error_code(0x0003) - permissions violation
PGD e201067 P4D e201067 PUD e202067 PMD 80000000010001e1 
Oops: 0003 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 8180 Comm: syz-executor.0 Not tainted 5.9.0-rc8-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:slow_imageblit drivers/video/fbdev/core/cfbimgblt.c:178 [inline]
RIP: 0010:cfb_imageblit+0x87a/0x1010 drivers/video/fbdev/core/cfbimgblt.c:302
Code: ff d3 e0 09 04 24 e8 85 3d 8a fd 45 39 e7 0f 87 45 ff ff ff e8 97 41 8a fd 48 8b 44 24 10 8b 14 24 48 8d 70 04 48 89 74 24 10 <89> 10 44 89 e6 44 89 ff e8 59 3d 8a fd 45 39 e7 0f 85 07 ff ff ff
RSP: 0018:ffffc9001727f738 EFLAGS: 00010246
RAX: ffff888001000018 RBX: 0000000000000000 RCX: ffffc90006229000
RDX: 0000000007700077 RSI: ffff88800100001c RDI: 0000000000000004
RBP: 0000000000000008 R08: 00000000000005c1 R09: 0000000000000000
R10: 000000000000001c R11: 0000000000000000 R12: 000000000000001c
R13: 0000000000000000 R14: ffff8880a2ca5b04 R15: 000000000000001c
FS:  00007f56a27fd700(0000) GS:ffff8880ae400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff888001000018 CR3: 000000008cb7c000 CR4: 00000000001506f0
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:1308
 con_flush drivers/tty/vt/vt.c:2575 [inline]
 vc_con_write_normal drivers/tty/vt/vt.c:2803 [inline]
 do_con_write+0xfab/0x1dd0 drivers/tty/vt/vt.c:2910
 con_write+0x22/0xb0 drivers/tty/vt/vt.c:3250
 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+0x2b0/0x730 fs/read_write.c:584
 ksys_write+0x12d/0x250 fs/read_write.c:639
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45de29
Code: 0d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 db b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f56a27fcc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 000000000003a600 RCX: 000000000045de29
RDX: 0000000000001006 RSI: 0000000020000000 RDI: 0000000000000004
RBP: 000000000118bf60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118bf2c
R13: 000000000169fb7f R14: 00007f56a27fd9c0 R15: 000000000118bf2c
Modules linked in:
CR2: ffff888001000018
---[ end trace 01c65d0bc3a4be8f ]---
RIP: 0010:__writel arch/x86/include/asm/io.h:71 [inline]
RIP: 0010:slow_imageblit drivers/video/fbdev/core/cfbimgblt.c:178 [inline]
RIP: 0010:cfb_imageblit+0x87a/0x1010 drivers/video/fbdev/core/cfbimgblt.c:302
Code: ff d3 e0 09 04 24 e8 85 3d 8a fd 45 39 e7 0f 87 45 ff ff ff e8 97 41 8a fd 48 8b 44 24 10 8b 14 24 48 8d 70 04 48 89 74 24 10 <89> 10 44 89 e6 44 89 ff e8 59 3d 8a fd 45 39 e7 0f 85 07 ff ff ff
RSP: 0018:ffffc9001727f738 EFLAGS: 00010246
RAX: ffff888001000018 RBX: 0000000000000000 RCX: ffffc90006229000
RDX: 0000000007700077 RSI: ffff88800100001c RDI: 0000000000000004
RBP: 0000000000000008 R08: 00000000000005c1 R09: 0000000000000000
R10: 000000000000001c R11: 0000000000000000 R12: 000000000000001c
R13: 0000000000000000 R14: ffff8880a2ca5b04 R15: 000000000000001c
FS:  00007f56a27fd700(0000) GS:ffff8880ae400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff888001000018 CR3: 000000008cb7c000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400