==================================================================
BUG: KASAN: global-out-of-bounds in memcpy include/linux/string.h:381 [inline]
BUG: KASAN: global-out-of-bounds in fbcon_get_font+0x28d/0x5b0 drivers/video/fbdev/core/fbcon.c:2474
Read of size 31 at addr ffffffff88752f7c by task syz-executor214/7018

CPU: 1 PID: 7018 Comm: syz-executor214 Not tainted 5.7.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x188/0x20d lib/dump_stack.c:118
 print_address_description.constprop.0.cold+0x5/0x315 mm/kasan/report.c:382
 __kasan_report.cold+0x35/0x4d mm/kasan/report.c:511
 kasan_report+0x33/0x50 mm/kasan/common.c:625
 check_memory_region_inline mm/kasan/generic.c:187 [inline]
 check_memory_region+0x141/0x190 mm/kasan/generic.c:193
 memcpy+0x20/0x60 mm/kasan/common.c:106
 memcpy include/linux/string.h:381 [inline]
 fbcon_get_font+0x28d/0x5b0 drivers/video/fbdev/core/fbcon.c:2474
 con_font_get drivers/tty/vt/vt.c:4479 [inline]
 con_font_op+0x1f7/0x1160 drivers/tty/vt/vt.c:4638
 do_fontx_ioctl drivers/tty/vt/vt_ioctl.c:273 [inline]
 vt_ioctl+0x1d31/0x26b0 drivers/tty/vt/vt_ioctl.c:945
 tty_ioctl+0xedc/0x1440 drivers/tty/tty_io.c:2656
 vfs_ioctl fs/ioctl.c:47 [inline]
 ksys_ioctl+0x11a/0x180 fs/ioctl.c:771
 __do_sys_ioctl fs/ioctl.c:780 [inline]
 __se_sys_ioctl fs/ioctl.c:778 [inline]
 __x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:778
 do_syscall_64+0xf6/0x7d0 arch/x86/entry/common.c:295
 entry_SYSCALL_64_after_hwframe+0x49/0xb3
RIP: 0033:0x441289
Code: e8 3c ad 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 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 0f 83 9b 09 fc ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007ffe191069a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441289
RDX: 0000000020000000 RSI: 0000000000004b6b RDI: 0000000000000003
RBP: 000000000000e23a R08: 000000000000000d R09: 00000000004002c8
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004020b0
R13: 0000000000402140 R14: 0000000000000000 R15: 0000000000000000

The buggy address belongs to the variable:
 fontdata_8x16+0xffc/0x1120

Memory state around the buggy address:
 ffffffff88752e80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffffffff88752f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffffffff88752f80: fa fa fa fa 06 fa fa fa fa fa fa fa 05 fa fa fa
                   ^
 ffffffff88753000: fa fa fa fa 06 fa fa fa fa fa fa fa 00 00 03 fa
 ffffffff88753080: fa fa fa fa 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================