general protection fault, probably for non-canonical address 0xdffffc001ffffff5: 0000 [#1] PREEMPT SMP KASAN
KASAN: probably user-memory-access in range [0x00000000ffffffa8-0x00000000ffffffaf]
CPU: 1 PID: 31114 Comm: syz-executor.3 Not tainted 5.8.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:fbcon_cursor+0x10e/0x650 drivers/video/fbdev/core/fbcon.c:1389
Code: df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 d5 04 00 00 48 8b 9d f0 03 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 2b
RSP: 0018:ffffc900054c78a8 EFLAGS: 00010207
RAX: dffffc0000000000 RBX: 00000000ffffffac RCX: ffffc9000fda2000
RDX: 000000001ffffff5 RSI: ffffffff83c04db9 RDI: ffff88808fa633f0
RBP: ffff88808fa63000 R08: 0000000000000000 R09: ffffffff8aaed307
R10: 00000000ffffffff R11: 0000000000000000 R12: ffff88821889c000
R13: 0000000000000002 R14: ffff8882188e4000 R15: ffff88821889c4a0
FS:  00007f3ce41cf700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000004ec0f0 CR3: 000000009de16000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 hide_cursor+0x85/0x280 drivers/tty/vt/vt.c:902
 redraw_screen+0x5e1/0x770 drivers/tty/vt/vt.c:1006
 fbcon_do_set_font+0x7ec/0x950 drivers/video/fbdev/core/fbcon.c:2615
 fbcon_set_font+0x767/0x8b0 drivers/video/fbdev/core/fbcon.c:2706
 con_font_set drivers/tty/vt/vt.c:4571 [inline]
 con_font_op+0xd25/0x1110 drivers/tty/vt/vt.c:4636
 vt_ioctl+0x1180/0x2670 drivers/tty/vt/vt_ioctl.c:928
 tty_ioctl+0x1019/0x15f0 drivers/tty/tty_io.c:2656
 vfs_ioctl fs/ioctl.c:48 [inline]
 ksys_ioctl+0x11a/0x180 fs/ioctl.c:753
 __do_sys_ioctl fs/ioctl.c:762 [inline]
 __se_sys_ioctl fs/ioctl.c:760 [inline]
 __x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:760
 do_syscall_64+0x60/0xe0 arch/x86/entry/common.c:384
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45c1f9
Code: Bad RIP value.
RSP: 002b:00007f3ce41cec78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000012080 RCX: 000000000045c1f9
RDX: 00000000200002c0 RSI: 0000000000004b61 RDI: 0000000000000003
RBP: 000000000078bf40 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000078bf0c
R13: 00007fffac16cf9f R14: 00007f3ce41cf9c0 R15: 000000000078bf0c
Modules linked in:
general protection fault, probably for non-canonical address 0xdffffc001ffffff5: 0000 [#2] PREEMPT SMP KASAN
KASAN: probably user-memory-access in range [0x00000000ffffffa8-0x00000000ffffffaf]
CPU: 1 PID: 31114 Comm: syz-executor.3 Not tainted 5.8.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:fbcon_cursor+0x10e/0x650 drivers/video/fbdev/core/fbcon.c:1389
Code: df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 d5 04 00 00 48 8b 9d f0 03 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 2b
RSP: 0018:ffffc900054c7528 EFLAGS: 00010007
RAX: dffffc0000000000 RBX: 00000000ffffffac RCX: ffffc9000fda2000
RDX: 000000001ffffff5 RSI: ffffffff83c04db9 RDI: ffff88808fa633f0
RBP: ffff88808fa63000 R08: 0000000000000000 R09: ffffffff8aaed307
R10: 0000000000000000 R11: 0000000000000000 R12: ffff88821889c000
R13: 0000000000000001 R14: ffff8882188e4000 R15: ffff88821889c4a0
FS:  00007f3ce41cf700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000004ec0f0 CR3: 000000009de16000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 fbcon_blank+0x865/0xbf0 drivers/video/fbdev/core/fbcon.c:2416
 do_unblank_screen+0x248/0x430 drivers/tty/vt/vt.c:4310
 bust_spinlocks+0x5b/0xe0 lib/bust_spinlocks.c:26
 oops_end+0x2b/0xf0 arch/x86/kernel/dumpstack.c:337
 __exc_general_protection arch/x86/kernel/traps.c:595 [inline]
 exc_general_protection+0x193/0x2d0 arch/x86/kernel/traps.c:525
 asm_exc_general_protection+0x1e/0x30 arch/x86/include/asm/idtentry.h:536
RIP: 0010:fbcon_cursor+0x10e/0x650 drivers/video/fbdev/core/fbcon.c:1389
Code: df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 d5 04 00 00 48 8b 9d f0 03 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 2b
RSP: 0018:ffffc900054c78a8 EFLAGS: 00010207
RAX: dffffc0000000000 RBX: 00000000ffffffac RCX: ffffc9000fda2000
RDX: 000000001ffffff5 RSI: ffffffff83c04db9 RDI: ffff88808fa633f0
RBP: ffff88808fa63000 R08: 0000000000000000 R09: ffffffff8aaed307
R10: 00000000ffffffff R11: 0000000000000000 R12: ffff88821889c000
R13: 0000000000000002 R14: ffff8882188e4000 R15: ffff88821889c4a0
 hide_cursor+0x85/0x280 drivers/tty/vt/vt.c:902
 redraw_screen+0x5e1/0x770 drivers/tty/vt/vt.c:1006
 fbcon_do_set_font+0x7ec/0x950 drivers/video/fbdev/core/fbcon.c:2615
 fbcon_set_font+0x767/0x8b0 drivers/video/fbdev/core/fbcon.c:2706
 con_font_set drivers/tty/vt/vt.c:4571 [inline]
 con_font_op+0xd25/0x1110 drivers/tty/vt/vt.c:4636
 vt_ioctl+0x1180/0x2670 drivers/tty/vt/vt_ioctl.c:928
 tty_ioctl+0x1019/0x15f0 drivers/tty/tty_io.c:2656
 vfs_ioctl fs/ioctl.c:48 [inline]
 ksys_ioctl+0x11a/0x180 fs/ioctl.c:753
 __do_sys_ioctl fs/ioctl.c:762 [inline]
 __se_sys_ioctl fs/ioctl.c:760 [inline]
 __x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:760
 do_syscall_64+0x60/0xe0 arch/x86/entry/common.c:384
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45c1f9
Code: Bad RIP value.
RSP: 002b:00007f3ce41cec78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000012080 RCX: 000000000045c1f9
RDX: 00000000200002c0 RSI: 0000000000004b61 RDI: 0000000000000003
RBP: 000000000078bf40 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000078bf0c
R13: 00007fffac16cf9f R14: 00007f3ce41cf9c0 R15: 000000000078bf0c
Modules linked in:
---[ end trace 8800e9b831b17d19 ]---
RIP: 0010:fbcon_cursor+0x10e/0x650 drivers/video/fbdev/core/fbcon.c:1389
Code: df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 d5 04 00 00 48 8b 9d f0 03 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 2b
RSP: 0018:ffffc900054c78a8 EFLAGS: 00010207
RAX: dffffc0000000000 RBX: 00000000ffffffac RCX: ffffc9000fda2000
RDX: 000000001ffffff5 RSI: ffffffff83c04db9 RDI: ffff88808fa633f0
RBP: ffff88808fa63000 R08: 0000000000000000 R09: ffffffff8aaed307
R10: 00000000ffffffff R11: 0000000000000000 R12: ffff88821889c000
R13: 0000000000000002 R14: ffff8882188e4000 R15: ffff88821889c4a0
FS:  00007f3ce41cf700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000004ec0f0 CR3: 000000009de16000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400