BUG: unable to handle kernel paging request at ffff888001000090
PGD de01067 P4D de01067 PUD de02067 PMD 80000000010001e1 
Oops: 0003 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 27870 Comm: syz-executor.0 Not tainted 4.19.161-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:writeb arch/x86/include/asm/io.h:65 [inline]
RIP: 0010:vga_imageblit_expand drivers/video/fbdev/vga16fb.c:1176 [inline]
RIP: 0010:vga16fb_imageblit+0xc2f/0x2260 drivers/video/fbdev/vga16fb.c:1260
Code: 48 83 c5 01 48 89 f8 48 89 f9 48 83 c3 01 48 c1 e8 03 83 e1 07 42 0f b6 04 38 38 c8 7f 08 84 c0 0f 85 86 0f 00 00 0f b6 45 ff <88> 02 44 89 e6 31 ff 29 de e8 63 9d bc fd 4c 39 eb 75 b8 48 8b 7c
RSP: 0018:ffff88807421f210 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff888001000091 RCX: 0000000000000007
RDX: ffff888001000090 RSI: ffffffff83a833bf RDI: ffff888238cd08e7
RBP: ffff888238cd08e8 R08: ffff888238cd08ff R09: 0000000000000000
R10: 0000000000000005 R11: 0000000000000000 R12: 0000000001000091
R13: ffff888001000091 R14: ffff888001000090 R15: dffffc0000000000
FS:  00007fa165bf9700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff888001000090 CR3: 00000000995f4000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 soft_cursor+0x514/0xa30 drivers/video/fbdev/core/softcursor.c:74
 bit_cursor+0x1126/0x1740 drivers/video/fbdev/core/bitblit.c:377
 fbcon_cursor+0x523/0x700 drivers/video/fbdev/core/fbcon.c:1309
 set_cursor drivers/tty/vt/vt.c:915 [inline]
 set_cursor+0x1dd/0x230 drivers/tty/vt/vt.c:906
 con_flush_chars drivers/tty/vt/vt.c:3225 [inline]
 con_flush_chars drivers/tty/vt/vt.c:3214 [inline]
 con_write+0x8f/0xb0 drivers/tty/vt/vt.c:3146
 do_output_char+0x5de/0x850 drivers/tty/n_tty.c:445
 process_output drivers/tty/n_tty.c:512 [inline]
 n_tty_write+0x46e/0xff0 drivers/tty/n_tty.c:2343
 do_tty_write drivers/tty/tty_io.c:960 [inline]
 tty_write+0x496/0x810 drivers/tty/tty_io.c:1044
 __vfs_write+0xf7/0x770 fs/read_write.c:485
 __kernel_write+0x109/0x370 fs/read_write.c:506
 write_pipe_buf+0x153/0x1f0 fs/splice.c:798
 splice_from_pipe_feed fs/splice.c:503 [inline]
 __splice_from_pipe+0x389/0x800 fs/splice.c:627
 splice_from_pipe fs/splice.c:662 [inline]
 default_file_splice_write+0xd8/0x180 fs/splice.c:810
 do_splice_from fs/splice.c:852 [inline]
 direct_splice_actor+0x115/0x160 fs/splice.c:1025
 splice_direct_to_actor+0x33f/0x8d0 fs/splice.c:980
 do_splice_direct+0x1a7/0x270 fs/splice.c:1068
 do_sendfile+0x550/0xc30 fs/read_write.c:1447
 __do_sys_sendfile64 fs/read_write.c:1508 [inline]
 __se_sys_sendfile64+0x147/0x160 fs/read_write.c:1494
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45deb9
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:00007fa165bf8c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 0000000000028040 RCX: 000000000045deb9
RDX: 0000000000000000 RSI: 0000000000000006 RDI: 0000000000000005
RBP: 000000000119bf68 R08: 0000000000000000 R09: 0000000000000000
R10: 0800000080004105 R11: 0000000000000246 R12: 000000000119bf2c
R13: 00007ffdcaff938f R14: 00007fa165bf99c0 R15: 000000000119bf2c
Modules linked in:
CR2: ffff888001000090
---[ end trace 8d5e648ff00beb19 ]---
RIP: 0010:writeb arch/x86/include/asm/io.h:65 [inline]
RIP: 0010:vga_imageblit_expand drivers/video/fbdev/vga16fb.c:1176 [inline]
RIP: 0010:vga16fb_imageblit+0xc2f/0x2260 drivers/video/fbdev/vga16fb.c:1260
Code: 48 83 c5 01 48 89 f8 48 89 f9 48 83 c3 01 48 c1 e8 03 83 e1 07 42 0f b6 04 38 38 c8 7f 08 84 c0 0f 85 86 0f 00 00 0f b6 45 ff <88> 02 44 89 e6 31 ff 29 de e8 63 9d bc fd 4c 39 eb 75 b8 48 8b 7c
RSP: 0018:ffff88807421f210 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff888001000091 RCX: 0000000000000007
RDX: ffff888001000090 RSI: ffffffff83a833bf RDI: ffff888238cd08e7
RBP: ffff888238cd08e8 R08: ffff888238cd08ff R09: 0000000000000000
R10: 0000000000000005 R11: 0000000000000000 R12: 0000000001000091
R13: ffff888001000091 R14: ffff888001000090 R15: dffffc0000000000
FS:  00007fa165bf9700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff888001000090 CR3: 00000000995f4000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400