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
Modules linked in:
CPU: 0 PID: 25708 Comm: syz-executor.2 Not tainted 4.14.169-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff888098744380 task.stack: ffff8880556b8000
RIP: 0010:fbcon_cursor+0x114/0x6f0 drivers/video/fbdev/core/fbcon.c:1325
RSP: 0018:ffff8880556bfb00 EFLAGS: 00010203
RAX: dffffc0000000000 RBX: ffff8880a5ff3c80 RCX: ffffc90007035000
RDX: 0000000020000001 RSI: ffffffff832a199c RDI: ffff888053e8cfe0
RBP: ffff8880556bfb40 R08: ffff8882192ba470 R09: ffffffff89554a40
R10: ffff888098744c00 R11: ffff888098744380 R12: ffff888053e8cc40
R13: ffff8882192ba000 R14: 0000000000000002 R15: 000000010000000e
FS:  00007efd369e8700(0000) GS:ffff8880aec00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000053930000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 hide_cursor+0x9d/0x2e0 drivers/tty/vt/vt.c:589
 putconsxy+0x1e/0xa0 drivers/tty/vt/vt.c:4269
 vcs_write+0xa29/0xbc0 drivers/tty/vt/vc_screen.c:492
 __vfs_write+0x105/0x6b0 fs/read_write.c:480
 vfs_write+0x198/0x500 fs/read_write.c:544
 SYSC_write fs/read_write.c:590 [inline]
 SyS_write+0xfd/0x230 fs/read_write.c:582
 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x45b349
RSP: 002b:00007efd369e7c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007efd369e86d4 RCX: 000000000045b349
RDX: 00000000000002dd RSI: 0000000020000000 RDI: 0000000000000006
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000c58 R14: 00000000004cd37c R15: 000000000075bf2c
Code: df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 83 05 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 
RIP: fbcon_cursor+0x114/0x6f0 drivers/video/fbdev/core/fbcon.c:1325 RSP: ffff8880556bfb00
---[ end trace a09497565015916b ]---