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BUG: KASAN: global-out-of-bounds in __fb_pad_aligned_buffer include/linux/fb.h:674 [inline]
BUG: KASAN: global-out-of-bounds in bit_putcs_aligned drivers/video/fbdev/core/bitblit.c:96 [inline]
BUG: KASAN: global-out-of-bounds in bit_putcs+0xbaf/0xd10 drivers/video/fbdev/core/bitblit.c:185
Read of size 1 at addr ffffffff88b65c98 by task syz-executor.0/29094

CPU: 1 PID: 29094 Comm: syz-executor.0 Not tainted 4.19.181-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+0x1fc/0x2ef lib/dump_stack.c:118
 print_address_description.cold+0x5/0x219 mm/kasan/report.c:256
 kasan_report_error.cold+0x8a/0x1b9 mm/kasan/report.c:354
 kasan_report mm/kasan/report.c:412 [inline]
 __asan_report_load1_noabort+0x88/0x90 mm/kasan/report.c:430
 __fb_pad_aligned_buffer include/linux/fb.h:674 [inline]
 bit_putcs_aligned drivers/video/fbdev/core/bitblit.c:96 [inline]
 bit_putcs+0xbaf/0xd10 drivers/video/fbdev/core/bitblit.c:185
 fbcon_putcs+0x336/0x4f0 drivers/video/fbdev/core/fbcon.c:1269
 do_update_region+0x399/0x630 drivers/tty/vt/vt.c:683
 invert_screen+0x335/0x640 drivers/tty/vt/vt.c:800
 highlight drivers/tty/vt/selection.c:55 [inline]
 __set_selection drivers/tty/vt/selection.c:295 [inline]
 set_selection+0xa74/0x12a0 drivers/tty/vt/selection.c:342
 tioclinux+0x110/0x510 drivers/tty/vt/vt.c:3051
 vt_ioctl+0x163e/0x2380 drivers/tty/vt/vt_ioctl.c:372
 tty_ioctl+0x5b0/0x15c0 drivers/tty/tty_io.c:2669
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:501 [inline]
 do_vfs_ioctl+0xcdb/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: 0033:0x466459
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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fde2dc2e188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000466459
RDX: 0000000020000000 RSI: 000000000000541c RDI: 0000000000000003
RBP: 00000000004bf9cb R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60
R13: 00007ffec36b41ef R14: 00007fde2dc2e300 R15: 0000000000022000

The buggy address belongs to the variable:
 oid_index+0x2d8/0xa60

Memory state around the buggy address:
 ffffffff88b65b80: fa fa fa fa 05 fa fa fa fa fa fa fa 00 06 fa fa
 ffffffff88b65c00: fa fa fa fa 07 fa fa fa fa fa fa fa 00 01 fa fa
>ffffffff88b65c80: fa fa fa fa 00 05 fa fa fa fa fa fa 03 fa fa fa
                            ^
 ffffffff88b65d00: fa fa fa fa 03 fa fa fa fa fa fa fa 03 fa fa fa
 ffffffff88b65d80: fa fa fa fa 00 07 fa fa fa fa fa fa 00 07 fa fa
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