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BUG: KASAN: global-out-of-bounds in memcpy include/linux/string.h:426 [inline]
BUG: KASAN: global-out-of-bounds in fbcon_get_font+0x28d/0x5b0 drivers/video/fbdev/core/fbcon.c:2471
Read of size 32 at addr ffffffff8874ae80 by task syz-executor.4/30679

CPU: 1 PID: 30679 Comm: syz-executor.4 Not tainted 5.6.0-rc3-next-20200228-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:374
 __kasan_report.cold+0x1a/0x32 mm/kasan/report.c:506
 kasan_report+0xe/0x20 mm/kasan/common.c:618
 check_memory_region_inline mm/kasan/generic.c:185 [inline]
 check_memory_region+0x128/0x190 mm/kasan/generic.c:192
 memcpy+0x20/0x50 mm/kasan/common.c:104
 memcpy include/linux/string.h:426 [inline]
 fbcon_get_font+0x28d/0x5b0 drivers/video/fbdev/core/fbcon.c:2471
 con_font_get drivers/tty/vt/vt.c:4458 [inline]
 con_font_op+0x1f7/0x1160 drivers/tty/vt/vt.c:4617
 vt_ioctl+0xc55/0x2450 drivers/tty/vt/vt_ioctl.c:933
 tty_ioctl+0xedd/0x1440 drivers/tty/tty_io.c:2660
 vfs_ioctl fs/ioctl.c:47 [inline]
 ksys_ioctl+0x11a/0x180 fs/ioctl.c:763
 __do_sys_ioctl fs/ioctl.c:772 [inline]
 __se_sys_ioctl fs/ioctl.c:770 [inline]
 __x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:770
 do_syscall_64+0xf6/0x790 arch/x86/entry/common.c:295
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45c849
Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f9fe8572c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f9fe85736d4 RCX: 000000000045c849
RDX: 0000000020000000 RSI: 0000000000004b60 RDI: 0000000000000003
RBP: 000000000076bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000371 R14: 00000000004c5e33 R15: 000000000076bf0c

The buggy address belongs to the variable:
 fontdata_8x16+0x1000/0x1120

Memory state around the buggy address:
 ffffffff8874ad80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffffffff8874ae00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffffffff8874ae80: fa fa fa fa 06 fa fa fa fa fa fa fa 05 fa fa fa
                   ^
 ffffffff8874af00: fa fa fa fa 06 fa fa fa fa fa fa fa 00 00 03 fa
 ffffffff8874af80: fa fa fa fa 00 00 00 00 00 00 00 00 00 00 00 00
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