BUG: unable to handle kernel paging request at ffff8880fe45f300
IP: writeb arch/x86/include/asm/io.h:65 [inline]
IP: vga_imageblit_expand drivers/video/fbdev/vga16fb.c:1169 [inline]
IP: vga16fb_imageblit+0x9ca/0x2160 drivers/video/fbdev/vga16fb.c:1261
PGD ae63067 P4D ae63067 PUD 0 
Oops: 0002 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 0 PID: 26996 Comm: syz-executor.4 Not tainted 4.14.182-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8881d559e280 task.stack: ffff8881a2fa8000
RIP: 0010:writeb arch/x86/include/asm/io.h:65 [inline]
RIP: 0010:vga_imageblit_expand drivers/video/fbdev/vga16fb.c:1169 [inline]
RIP: 0010:vga16fb_imageblit+0x9ca/0x2160 drivers/video/fbdev/vga16fb.c:1261
RSP: 0018:ffff8881a2faf288 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000003 RCX: ffffc90007712000
RDX: 0000000000000000 RSI: ffffffff831fd659 RDI: ffff8880fe45f300
RBP: ffff888219c30e04 R08: ffff8880a5facebf R09: ffffed10433861cc
R10: ffffed10433861cb R11: ffff888219c30e5f R12: ffff888219c30e20
R13: ffff8880a5ff7680 R14: ffff888219c30e00 R15: 0000000000000000
FS:  00007f794b674700(0000) GS:ffff8880aec00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff8880fe45f300 CR3: 00000001d2b32000 CR4: 00000000001426f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 soft_cursor+0x50d/0xa40 drivers/video/fbdev/core/softcursor.c:74
 bit_cursor+0x1072/0x1660 drivers/video/fbdev/core/bitblit.c:386
 fbcon_cursor+0x4b1/0x690 drivers/video/fbdev/core/fbcon.c:1350
 hide_cursor+0x7a/0x2a0 drivers/tty/vt/vt.c:590
 redraw_screen+0x2a2/0x760 drivers/tty/vt/vt.c:680
 vc_do_resize+0xbe0/0xde0 drivers/tty/vt/vt.c:967
 fbcon_modechanged+0x361/0x800 drivers/video/fbdev/core/fbcon.c:2938
 fbcon_event_notify+0x11a/0x1750 drivers/video/fbdev/core/fbcon.c:3302
 notifier_call_chain+0x107/0x1a0 kernel/notifier.c:93
 __blocking_notifier_call_chain kernel/notifier.c:317 [inline]
 __blocking_notifier_call_chain kernel/notifier.c:304 [inline]
 blocking_notifier_call_chain kernel/notifier.c:328 [inline]
 blocking_notifier_call_chain+0x79/0x90 kernel/notifier.c:325
 fb_set_var+0xaad/0xc70 drivers/video/fbdev/core/fbmem.c:1054
 do_fb_ioctl+0x3cc/0x840 drivers/video/fbdev/core/fbmem.c:1127
 fb_ioctl+0xda/0x120 drivers/video/fbdev/core/fbmem.c:1242
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:500 [inline]
 do_vfs_ioctl+0x75a/0xfe0 fs/ioctl.c:684
 SYSC_ioctl fs/ioctl.c:701 [inline]
 SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x45ca69
RSP: 002b:00007f794b673c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00000000004e4b00 RCX: 000000000045ca69
RDX: 0000000020000000 RSI: 0000000000004601 RDI: 0000000000000004
RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000000002f2 R14: 00000000004c5708 R15: 00007f794b6746d4
Code: ff df 48 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 09 84 d2 74 05 e8 4e 0f 64 fe 41 8b 46 14 48 8b 3c 24 <88> 07 0f ae e8 8a 07 b8 05 00 00 00 ba ce 03 00 00 ee 48 c7 c2 
RIP: writeb arch/x86/include/asm/io.h:65 [inline] RSP: ffff8881a2faf288
RIP: vga_imageblit_expand drivers/video/fbdev/vga16fb.c:1169 [inline] RSP: ffff8881a2faf288
RIP: vga16fb_imageblit+0x9ca/0x2160 drivers/video/fbdev/vga16fb.c:1261 RSP: ffff8881a2faf288
CR2: ffff8880fe45f300
---[ end trace 39180e887506b501 ]---