kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 5 Comm: kworker/0:0 Not tainted 4.19.106-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events console_callback
RIP: 0010:fbcon_cursor+0x114/0x7b0 drivers/video/fbdev/core/fbcon.c:1347
Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 43 06 00 00 4d 8b bc 24 a0 03 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48 c1 ea 03 <0f> b6 14 02 4c 89 f8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 4d
RSP: 0018:ffff8880aa347b00 EFLAGS: 00010207
RAX: dffffc0000000000 RBX: ffff8882198ac7c0 RCX: ffffffff83b50580
RDX: 0000000020000000 RSI: ffffffff8388dd7c RDI: ffff888078621120
RBP: ffff8880aa347b40 R08: ffff8880a5bbd1e8 R09: ffffed1014b538b4
R10: ffffed1014b538b3 R11: ffff8880a5a9c59f R12: ffff888078620d80
R13: ffff8880a5bbcd80 R14: 0000000000000001 R15: 0000000100000004
FS:  0000000000000000(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000071a158 CR3: 0000000056197000 CR4: 00000000001426f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 set_cursor drivers/tty/vt/vt.c:908 [inline]
 set_cursor+0x1fb/0x280 drivers/tty/vt/vt.c:899
 redraw_screen+0x60f/0x8e0 drivers/tty/vt/vt.c:1015
 complete_change_console+0x105/0x3a0 drivers/tty/vt/vt_ioctl.c:1277
 change_console+0x19b/0x2c0 drivers/tty/vt/vt_ioctl.c:1402
 console_callback+0x3a1/0x400 drivers/tty/vt/vt.c:2800
 process_one_work+0x989/0x1750 kernel/workqueue.c:2153
 worker_thread+0x98/0xe40 kernel/workqueue.c:2296
 kthread+0x354/0x420 kernel/kthread.c:246
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
Modules linked in:
---[ end trace 2c6642a2b560f29d ]---
RIP: 0010:fbcon_cursor+0x114/0x7b0 drivers/video/fbdev/core/fbcon.c:1347
Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 43 06 00 00 4d 8b bc 24 a0 03 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48 c1 ea 03 <0f> b6 14 02 4c 89 f8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 4d
RSP: 0018:ffff8880aa347b00 EFLAGS: 00010207
RAX: dffffc0000000000 RBX: ffff8882198ac7c0 RCX: ffffffff83b50580
RDX: 0000000020000000 RSI: ffffffff8388dd7c RDI: ffff888078621120
RBP: ffff8880aa347b40 R08: ffff8880a5bbd1e8 R09: ffffed1014b538b4
R10: ffffed1014b538b3 R11: ffff8880a5a9c59f R12: ffff888078620d80
R13: ffff8880a5bbcd80 R14: 0000000000000001 R15: 0000000100000004
FS:  0000000000000000(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000071a158 CR3: 0000000056197000 CR4: 00000000001426f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400