BUG: unable to handle page fault for address: ffff888001000028
#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: 1 PID: 6777 Comm: agetty Not tainted 5.9.0-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 65 38 8a fd 45 39 e7 0f 87 45 ff ff ff e8 77 3c 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 39 38 8a fd 45 39 e7 0f 85 07 ff ff ff
RSP: 0018:ffffc900057b77a0 EFLAGS: 00010293
RAX: ffff888001000028 RBX: 0000000000000000 RCX: ffffffff83ec028b
RDX: 0000000000000000 RSI: ffff88800100002c RDI: 0000000000000004
RBP: 0000000000000000 R08: ffff8880a2d44b3f R09: ffffffff8b599787
R10: 000000000000001c R11: 0000000000000000 R12: 000000000000001c
R13: 0000000000000000 R14: ffff8880a2d44b3a R15: 000000000000001c
FS:  00007f888859d500(0000) GS:ffff8880ae500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff888001000028 CR3: 0000000094918000 CR4: 00000000001526e0
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
 soft_cursor+0x514/0xa30 drivers/video/fbdev/core/softcursor.c:74
 bit_cursor+0xcfe/0x1720 drivers/video/fbdev/core/bitblit.c:377
 fbcon_cursor+0x50e/0x620 drivers/video/fbdev/core/fbcon.c:1348
 set_cursor drivers/tty/vt/vt.c:919 [inline]
 set_cursor+0x1d2/0x240 drivers/tty/vt/vt.c:910
 con_flush_chars drivers/tty/vt/vt.c:3330 [inline]
 con_flush_chars drivers/tty/vt/vt.c:3319 [inline]
 con_write+0x8f/0xb0 drivers/tty/vt/vt.c:3251
 do_output_char+0x5de/0x850 drivers/tty/n_tty.c:447
 __process_echoes+0x38e/0x9f0 drivers/tty/n_tty.c:739
 flush_echoes drivers/tty/n_tty.c:829 [inline]
 __receive_buf drivers/tty/n_tty.c:1648 [inline]
 n_tty_receive_buf_common+0xb88/0x2bc0 drivers/tty/n_tty.c:1742
 tiocsti drivers/tty/tty_io.c:2196 [inline]
 tty_ioctl+0xf2e/0x15f0 drivers/tty/tty_io.c:2572
 vfs_ioctl fs/ioctl.c:48 [inline]
 __do_sys_ioctl fs/ioctl.c:753 [inline]
 __se_sys_ioctl fs/ioctl.c:739 [inline]
 __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:739
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7f88880c1017
Code: 00 00 00 48 8b 05 81 7e 2b 00 64 c7 00 26 00 00 00 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 51 7e 2b 00 f7 d8 64 89 01 48
RSP: 002b:00007ffea1b3f898 EFLAGS: 00000202 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007ffea1b3faa2 RCX: 00007f88880c1017
RDX: 00007ffea1b3faa1 RSI: 0000000000005412 RDI: 0000000000000000
RBP: 00007ffea1b3fb20 R08: ffffffffffffff98 R09: 00007ffea1b3f910
R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffea1b3f8b4
R13: 00007ffea1b3fa10 R14: 00007ffea1b3f910 R15: 0000000000000000
Modules linked in:
CR2: ffff888001000028
---[ end trace 65d69f1d259246a8 ]---
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 65 38 8a fd 45 39 e7 0f 87 45 ff ff ff e8 77 3c 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 39 38 8a fd 45 39 e7 0f 85 07 ff ff ff
RSP: 0018:ffffc900057b77a0 EFLAGS: 00010293
RAX: ffff888001000028 RBX: 0000000000000000 RCX: ffffffff83ec028b
RDX: 0000000000000000 RSI: ffff88800100002c RDI: 0000000000000004
RBP: 0000000000000000 R08: ffff8880a2d44b3f R09: ffffffff8b599787
R10: 000000000000001c R11: 0000000000000000 R12: 000000000000001c
R13: 0000000000000000 R14: ffff8880a2d44b3a R15: 000000000000001c
FS:  00007f888859d500(0000) GS:ffff8880ae500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff888001000028 CR3: 0000000094918000 CR4: 00000000001526e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400