input: HID 0926:3333 as /devices/platform/dummy_hcd.3/usb4/4-1/4-1:0.0/0003:0926:3333.0006/input/input11
keytouch 0003:0926:3333.0006: input,hidraw0: USB HID v0.00 Keyboard [HID 0926:3333] on usb-dummy_hcd.3-1/input0
general protection fault, probably for non-canonical address 0xdffffc001fffffd9: 0000 [#1] PREEMPT SMP KASAN
KASAN: probably user-memory-access in range [0x00000000fffffec8-0x00000000fffffecf]
CPU: 0 PID: 2690 Comm: kworker/0:2 Not tainted 5.8.0-rc3-next-20200703-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events console_callback
RIP: 0010:fbcon_cursor+0x10e/0x660 drivers/video/fbdev/core/fbcon.c:1389
Code: df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 f8 04 00 00 48 8b 9d 08 04 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 <0f> b6 14 02 48 89 d8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 4b
RSP: 0018:ffffc90008837ac8 EFLAGS: 00010203
RAX: dffffc0000000000 RBX: 00000000fffffece RCX: ffffffff83eeeed9
RDX: 000000001fffffd9 RSI: ffffffff83c21159 RDI: ffff8880a6e2c408
RBP: ffff8880a6e2c000 R08: 0000000000000001 R09: ffff8882188b425f
R10: 0000000000000001 R11: 0000000000000000 R12: ffff8882188ba000
R13: 0000000000000001 R14: ffff8880a35b5000 R15: ffff8882188ba4a0
FS:  0000000000000000(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b31e2e000 CR3: 00000000a21af000 CR4: 00000000001526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 set_cursor drivers/tty/vt/vt.c:919 [inline]
 set_cursor+0x1d2/0x240 drivers/tty/vt/vt.c:910
 redraw_screen+0x4b9/0x770 drivers/tty/vt/vt.c:1036
 complete_change_console+0xff/0x610 drivers/tty/vt/vt_ioctl.c:1279
 change_console+0x19c/0x560 drivers/tty/vt/vt_ioctl.c:1404
 console_callback+0x3b1/0x410 drivers/tty/vt/vt.c:2934
 process_one_work+0x94c/0x1670 kernel/workqueue.c:2269
 worker_thread+0x64c/0x1120 kernel/workqueue.c:2415
 kthread+0x3b5/0x4a0 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294
Modules linked in:
---[ end trace 71576fea8cbffcda ]---
RIP: 0010:fbcon_cursor+0x10e/0x660 drivers/video/fbdev/core/fbcon.c:1389
Code: df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 f8 04 00 00 48 8b 9d 08 04 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 <0f> b6 14 02 48 89 d8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 4b
RSP: 0018:ffffc90008837ac8 EFLAGS: 00010203
RAX: dffffc0000000000 RBX: 00000000fffffece RCX: ffffffff83eeeed9
RDX: 000000001fffffd9 RSI: ffffffff83c21159 RDI: ffff8880a6e2c408
RBP: ffff8880a6e2c000 R08: 0000000000000001 R09: ffff8882188b425f
R10: 0000000000000001 R11: 0000000000000000 R12: ffff8882188ba000
R13: 0000000000000001 R14: ffff8880a35b5000 R15: ffff8882188ba4a0
FS:  0000000000000000(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b31e2e000 CR3: 00000000a21af000 CR4: 00000000001526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400