BUG: unable to handle kernel paging request at ffff888001000018
IP: __writel arch/x86/include/asm/io.h:71 [inline]
IP: slow_imageblit drivers/video/fbdev/core/cfbimgblt.c:178 [inline]
IP: cfb_imageblit+0xa30/0xe40 drivers/video/fbdev/core/cfbimgblt.c:302
PGD c9de067 P4D c9de067 PUD c9df067 PMD 80000000010001e1 
Oops: 0003 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 1 PID: 15632 Comm: syz-executor.2 Not tainted 4.14.264-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8880554b0300 task.stack: ffff8880a0790000
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+0xa30/0xe40 drivers/video/fbdev/core/cfbimgblt.c:302
RSP: 0018:ffff8880a07972d8 EFLAGS: 00010246
RAX: ffff88800100001c RBX: 000000000000001c RCX: ffffc90006ee1000
RDX: 0000000000040000 RSI: ffff888001000018 RDI: dffffc0000000000
RBP: 0000000000000000 R08: ffff88823883123f R09: 0000000000000000
R10: ffff8880554b0c28 R11: 0000000000000000 R12: ffff88823883123d
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  00007fd5a90ae700(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff888001000018 CR3: 0000000097561000 CR4: 00000000003406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 vga_imageblit_expand drivers/video/fbdev/vga16fb.c:1208 [inline]
 vga16fb_imageblit+0x630/0x2140 drivers/video/fbdev/vga16fb.c:1261
 soft_cursor+0x50a/0xa50 drivers/video/fbdev/core/softcursor.c:74
 bit_cursor+0xf7a/0x1580 drivers/video/fbdev/core/bitblit.c:377
 fbcon_cursor+0x48e/0x650 drivers/video/fbdev/core/fbcon.c:1290
 set_cursor drivers/tty/vt/vt.c:603 [inline]
 set_cursor+0x189/0x1e0 drivers/tty/vt/vt.c:594
 con_flush_chars drivers/tty/vt/vt.c:2902 [inline]
 con_flush_chars drivers/tty/vt/vt.c:2891 [inline]
 con_write+0x81/0xa0 drivers/tty/vt/vt.c:2823
 process_output_block drivers/tty/n_tty.c:595 [inline]
 n_tty_write+0x352/0xda0 drivers/tty/n_tty.c:2333
 do_tty_write drivers/tty/tty_io.c:959 [inline]
 tty_write+0x410/0x740 drivers/tty/tty_io.c:1043
 __vfs_write+0xe4/0x630 fs/read_write.c:480
 __kernel_write+0xf5/0x330 fs/read_write.c:501
 write_pipe_buf+0x143/0x1c0 fs/splice.c:797
 splice_from_pipe_feed fs/splice.c:502 [inline]
 __splice_from_pipe+0x326/0x7a0 fs/splice.c:626
 splice_from_pipe fs/splice.c:661 [inline]
 default_file_splice_write+0xc5/0x150 fs/splice.c:809
 do_splice_from fs/splice.c:851 [inline]
 direct_splice_actor+0x115/0x160 fs/splice.c:1018
 splice_direct_to_actor+0x27c/0x730 fs/splice.c:973
 do_splice_direct+0x164/0x210 fs/splice.c:1061
 do_sendfile+0x47f/0xb30 fs/read_write.c:1441
 SYSC_sendfile64 fs/read_write.c:1502 [inline]
 SyS_sendfile64+0xff/0x110 fs/read_write.c:1488
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x7fd5aa739059
RSP: 002b:00007fd5a90ae168 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007fd5aa84bf60 RCX: 00007fd5aa739059
RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000004
RBP: 00007fd5aa79308d R08: 0000000000000000 R09: 0000000000000000
R10: 000000000000a808 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc5c4291bf R14: 00007fd5a90ae300 R15: 0000000000022000
Code: 45 7c 24 20 e8 02 57 1b fe 89 d9 44 89 f8 d3 e0 41 09 c5 39 5c 24 08 0f 87 76 ff ff ff e8 e9 56 1b fe 48 8b 74 24 10 48 8d 46 04 <44> 89 2e 39 5c 24 08 0f 85 44 ff ff ff 45 31 ed 48 89 44 24 10 
RIP: __writel arch/x86/include/asm/io.h:71 [inline] RSP: ffff8880a07972d8
RIP: slow_imageblit drivers/video/fbdev/core/cfbimgblt.c:178 [inline] RSP: ffff8880a07972d8
RIP: cfb_imageblit+0xa30/0xe40 drivers/video/fbdev/core/cfbimgblt.c:302 RSP: ffff8880a07972d8
CR2: ffff888001000018
---[ end trace c8b0b069e0f6a727 ]---
----------------
Code disassembly (best guess):
   0:	45 7c 24             	rex.RB jl 0x27
   3:	20 e8                	and    %ch,%al
   5:	02 57 1b             	add    0x1b(%rdi),%dl
   8:	fe 89 d9 44 89 f8    	decb   -0x776bb27(%rcx)
   e:	d3 e0                	shl    %cl,%eax
  10:	41 09 c5             	or     %eax,%r13d
  13:	39 5c 24 08          	cmp    %ebx,0x8(%rsp)
  17:	0f 87 76 ff ff ff    	ja     0xffffff93
  1d:	e8 e9 56 1b fe       	callq  0xfe1b570b
  22:	48 8b 74 24 10       	mov    0x10(%rsp),%rsi
  27:	48 8d 46 04          	lea    0x4(%rsi),%rax
* 2b:	44 89 2e             	mov    %r13d,(%rsi) <-- trapping instruction
  2e:	39 5c 24 08          	cmp    %ebx,0x8(%rsp)
  32:	0f 85 44 ff ff ff    	jne    0xffffff7c
  38:	45 31 ed             	xor    %r13d,%r13d
  3b:	48 89 44 24 10       	mov    %rax,0x10(%rsp)