BUG: kernel NULL pointer dereference, address: 0000000000000000
#PF: supervisor instruction fetch in kernel mode
#PF: error_code(0x0010) - not-present page
PGD 139e9067 P4D 139e9067 PUD 28208067 PMD 0 
Oops: 0010 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 8376 Comm: syz-executor163 Not tainted 5.12.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:0x0
Code: Unable to access opcode bytes at RIP 0xffffffffffffffd6.
RSP: 0018:ffffc900014ff760 EFLAGS: 00010296
RAX: 0000000000000007 RBX: 0000000000000000 RCX: 0000000000000007
RDX: 0000000000000002 RSI: ffff888019026000 RDI: ffff888010479000
RBP: ffff888010479000 R08: 0000000000000000 R09: ffffffff83f6450a
R10: 0000000000000003 R11: 0000000000000018 R12: ffff888019026000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000720
FS:  0000000000000000(0000) GS:ffff8880b9d00000(0063) knlGS:0000000008c042c0
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 0000000024bc5000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 fbcon_cursor+0x50e/0x620 drivers/video/fbdev/core/fbcon.c:1336
 hide_cursor+0x85/0x280 drivers/tty/vt/vt.c:907
 redraw_screen+0x5b4/0x740 drivers/tty/vt/vt.c:1012
 vc_do_resize+0xed8/0x1150 drivers/tty/vt/vt.c:1325
 fbcon_set_disp+0x7a8/0xe10 drivers/video/fbdev/core/fbcon.c:1402
 con2fb_init_display drivers/video/fbdev/core/fbcon.c:808 [inline]
 set_con2fb_map+0x7a6/0xf80 drivers/video/fbdev/core/fbcon.c:879
 fbcon_set_con2fb_map_ioctl+0x165/0x220 drivers/video/fbdev/core/fbcon.c:3010
 do_fb_ioctl+0x5b6/0x690 drivers/video/fbdev/core/fbmem.c:1156
 fb_compat_ioctl+0x17e/0x610 drivers/video/fbdev/core/fbmem.c:1309
 __do_compat_sys_ioctl+0x1d3/0x230 fs/ioctl.c:842
 do_syscall_32_irqs_on arch/x86/entry/common.c:77 [inline]
 __do_fast_syscall_32+0x56/0x90 arch/x86/entry/common.c:140
 do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:165
 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c
RIP: 0023:0xf7fed549
Code: 03 74 c0 01 10 05 03 74 b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00
RSP: 002b:00000000ffe90fac EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000000004610
RDX: 0000000020000040 RSI: 00000000ffe91000 RDI: 00000000080e3000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Modules linked in:
CR2: 0000000000000000
---[ end trace 07ecba068b871676 ]---
RIP: 0010:0x0
Code: Unable to access opcode bytes at RIP 0xffffffffffffffd6.
RSP: 0018:ffffc900014ff760 EFLAGS: 00010296
RAX: 0000000000000007 RBX: 0000000000000000 RCX: 0000000000000007
RDX: 0000000000000002 RSI: ffff888019026000 RDI: ffff888010479000
RBP: ffff888010479000 R08: 0000000000000000 R09: ffffffff83f6450a
R10: 0000000000000003 R11: 0000000000000018 R12: ffff888019026000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000720
FS:  0000000000000000(0000) GS:ffff8880b9d00000(0063) knlGS:0000000008c042c0
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 0000000024bc5000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400