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BUG: KASAN: global-out-of-bounds in memcpy include/linux/string.h:348 [inline]
BUG: KASAN: global-out-of-bounds in soft_cursor+0x448/0xa20 drivers/video/fbdev/core/softcursor.c:70
Read of size 32 at addr ffffffff87cd6d40 by task syz-executor.1/31656

CPU: 1 PID: 31656 Comm: syz-executor.1 Not tainted 4.19.122-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.cold+0x5/0x212 mm/kasan/report.c:256
 kasan_report_error mm/kasan/report.c:354 [inline]
 kasan_report mm/kasan/report.c:412 [inline]
 kasan_report.cold+0x88/0x2b9 mm/kasan/report.c:396
 memcpy+0x20/0x50 mm/kasan/kasan.c:302
 memcpy include/linux/string.h:348 [inline]
 soft_cursor+0x448/0xa20 drivers/video/fbdev/core/softcursor.c:70
 bit_cursor+0x1230/0x1900 drivers/video/fbdev/core/bitblit.c:386
 fbcon_cursor+0x572/0x760 drivers/video/fbdev/core/fbcon.c:1372
 hide_cursor+0x85/0x2c0 drivers/tty/vt/vt.c:897
 redraw_screen+0x2ed/0x870 drivers/tty/vt/vt.c:1001
 fbcon_do_set_font+0x727/0xa30 drivers/video/fbdev/core/fbcon.c:2586
 fbcon_copy_font+0x125/0x190 drivers/video/fbdev/core/fbcon.c:2601
 con_font_copy drivers/tty/vt/vt.c:4580 [inline]
 con_font_op+0x63f/0x1130 drivers/tty/vt/vt.c:4595
 vt_ioctl+0x16f1/0x2500 drivers/tty/vt/vt_ioctl.c:980
 tty_ioctl+0x7a1/0x1420 drivers/tty/tty_io.c:2669
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:501 [inline]
 do_vfs_ioctl+0xcda/0x12e0 fs/ioctl.c:688
 ksys_ioctl+0x9b/0xc0 fs/ioctl.c:705
 __do_sys_ioctl fs/ioctl.c:712 [inline]
 __se_sys_ioctl fs/ioctl.c:710 [inline]
 __x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:710
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45c829
Code: 0d b7 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 db b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fd9fe0b4c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00000000004e6860 RCX: 000000000045c829
RDX: 0000000020000000 RSI: 0000000000004b72 RDI: 0000000000000004
RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000372 R14: 00000000004c5e35 R15: 00007fd9fe0b56d4

The buggy address belongs to the variable:
 oid_index+0x380/0xa60

Memory state around the buggy address:
 ffffffff87cd6c00: fa fa fa fa 00 05 fa fa fa fa fa fa 03 fa fa fa
 ffffffff87cd6c80: fa fa fa fa 03 fa fa fa fa fa fa fa 03 fa fa fa
>ffffffff87cd6d00: fa fa fa fa 00 07 fa fa fa fa fa fa 00 07 fa fa
                                           ^
 ffffffff87cd6d80: fa fa fa fa 06 fa fa fa fa fa fa fa 00 00 00 04
 ffffffff87cd6e00: fa fa fa fa 00 00 fa fa fa fa fa fa 00 00 06 fa
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