==================================================================
BUG: KASAN: global-out-of-bounds in soft_cursor+0x458/0xa10 drivers/video/fbdev/core/softcursor.c:70
Read of size 16 at addr ffffffff8bf33460 by task syz.0.1779/12253

CPU: 0 UID: 0 PID: 12253 Comm: syz.0.1779 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
 print_address_description mm/kasan/report.c:378 [inline]
 print_report+0xcd/0x630 mm/kasan/report.c:482
 kasan_report+0xe0/0x110 mm/kasan/report.c:595
 check_region_inline mm/kasan/generic.c:194 [inline]
 kasan_check_range+0x100/0x1b0 mm/kasan/generic.c:200
 __asan_memcpy+0x23/0x60 mm/kasan/shadow.c:105
 soft_cursor+0x458/0xa10 drivers/video/fbdev/core/softcursor.c:70
 bit_cursor+0xe8c/0x17e0 drivers/video/fbdev/core/bitblit.c:395
 fbcon_cursor+0x40c/0x5a0 drivers/video/fbdev/core/fbcon.c:1355
 hide_cursor+0x87/0x220 drivers/tty/vt/vt.c:855
 update_region+0xb3/0x160 drivers/tty/vt/vt.c:641
 vcs_write+0x83d/0xdb0 drivers/tty/vt/vc_screen.c:685
 vfs_write+0x2a0/0x11d0 fs/read_write.c:684
 ksys_write+0x12a/0x250 fs/read_write.c:738
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc72998f749
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fc72a833038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fc729be6180 RCX: 00007fc72998f749
RDX: 0000000000000018 RSI: 00002000000000c0 RDI: 000000000000000a
RBP: 00007fc729a13f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fc729be6218 R14: 00007fc729be6180 R15: 00007ffdb3b13a48
 </TASK>

The buggy address belongs to the variable:
 fontdata_8x16+0x10e0/0x1140

The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xbf33
flags: 0xfff00000002000(reserved|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000002000 ffffea00002fccc8 ffffea00002fccc8 0000000000000000
raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner info is not present (never set?)

Memory state around the buggy address:
 ffffffff8bf33300: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffffffff8bf33380: 00 00 f9 f9 f9 f9 f9 f9 06 f9 f9 f9 f9 f9 f9 f9
>ffffffff8bf33400: 05 f9 f9 f9 f9 f9 f9 f9 06 f9 f9 f9 f9 f9 f9 f9
                                                       ^
 ffffffff8bf33480: 00 00 03 f9 f9 f9 f9 f9 00 00 00 00 00 00 00 00
 ffffffff8bf33500: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================