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BUG: KASAN: global-out-of-bounds in precalculate_color+0x2154/0x2480 drivers/media/common/v4l2-tpg/v4l2-tpg-core.c:942
Read of size 1 at addr ffffffff88b3d3f9 by task vivid-000-vid-c/10205

CPU: 0 PID: 10205 Comm: vivid-000-vid-c Not tainted 5.5.0-rc3-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+0x197/0x210 lib/dump_stack.c:118
 print_address_description.constprop.0.cold+0x5/0x30b mm/kasan/report.c:374
 __kasan_report.cold+0x1b/0x41 mm/kasan/report.c:506
 kasan_report+0x12/0x20 mm/kasan/common.c:639
 __asan_report_load1_noabort+0x14/0x20 mm/kasan/generic_report.c:132
 precalculate_color+0x2154/0x2480 drivers/media/common/v4l2-tpg/v4l2-tpg-core.c:942
 tpg_precalculate_colors drivers/media/common/v4l2-tpg/v4l2-tpg-core.c:1093 [inline]
 tpg_recalc+0x561/0x2850 drivers/media/common/v4l2-tpg/v4l2-tpg-core.c:2118
 tpg_calc_text_basep+0xa1/0x290 drivers/media/common/v4l2-tpg/v4l2-tpg-core.c:2136
 vivid_fillbuff+0x1a5f/0x3af0 drivers/media/platform/vivid/vivid-kthread-cap.c:466
 vivid_thread_vid_cap_tick+0x8cf/0x2210 drivers/media/platform/vivid/vivid-kthread-cap.c:727
 vivid_thread_vid_cap+0x5d8/0xa60 drivers/media/platform/vivid/vivid-kthread-cap.c:866
 kthread+0x361/0x430 kernel/kthread.c:255
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352

The buggy address belongs to the variable:
 kbd_keycodes+0x119/0x760

Memory state around the buggy address:
 ffffffff88b3d280: fa fa fa fa 00 00 04 fa fa fa fa fa 00 00 00 00
 ffffffff88b3d300: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffffffff88b3d380: 00 00 00 00 00 00 00 00 00 00 00 00 fa fa fa fa
                                                                ^
 ffffffff88b3d400: 00 00 00 00 07 fa fa fa fa fa fa fa 00 00 00 00
 ffffffff88b3d480: 00 fa fa fa fa fa fa fa 02 fa fa fa fa fa fa fa
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