==================================================================
BUG: KASAN: global-out-of-bounds in tpg_print_str_4+0xbc9/0xd70 drivers/media/common/v4l2-tpg/v4l2-tpg-core.c:1820
Read of size 1 at addr ffffffff88631c50 by task vivid-000-vid-c/15598

CPU: 1 PID: 15598 Comm: vivid-000-vid-c Not tainted 4.20.0-rc1+ #230
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+0x244/0x39d lib/dump_stack.c:113
 print_address_description.cold.7+0x58/0x1ff mm/kasan/report.c:256
 kasan_report_error mm/kasan/report.c:354 [inline]
 kasan_report.cold.8+0x242/0x309 mm/kasan/report.c:412
 __asan_report_load1_noabort+0x14/0x20 mm/kasan/report.c:430
 tpg_print_str_4+0xbc9/0xd70 drivers/media/common/v4l2-tpg/v4l2-tpg-core.c:1820
 tpg_gen_text+0x4ba/0x540 drivers/media/common/v4l2-tpg/v4l2-tpg-core.c:1874
 vivid_fillbuff+0x3ff7/0x68e0 drivers/media/platform/vivid/vivid-kthread-cap.c:532
 vivid_thread_vid_cap_tick drivers/media/platform/vivid/vivid-kthread-cap.c:709 [inline]
 vivid_thread_vid_cap+0xbc1/0x2650 drivers/media/platform/vivid/vivid-kthread-cap.c:813
 kthread+0x35a/0x440 kernel/kthread.c:246
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352

The buggy address belongs to the variable:
 font_vga_8x16+0x50/0x60

Memory state around the buggy address:
 ffffffff88631b00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffffffff88631b80: 00 00 00 00 fa fa fa fa 00 fa fa fa fa fa fa fa
>ffffffff88631c00: 00 00 00 00 00 fa fa fa fa fa fa fa 00 00 00 00
                                                 ^
 ffffffff88631c80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffffffff88631d00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 15614 Comm: syz-executor5 Tainted: G    B             4.20.0-rc1+ #230
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+0x244/0x39d lib/dump_stack.c:113
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0xa/0x17 lib/fault-inject.c:149
 __should_failslab+0x124/0x180 mm/failslab.c:32
 should_failslab+0x9/0x14 mm/slab_common.c:1578
 slab_pre_alloc_hook mm/slab.h:423 [inline]
 slab_alloc_node mm/slab.c:3299 [inline]
 kmem_cache_alloc_node+0x26e/0x730 mm/slab.c:3642
 __alloc_skb+0x119/0x770 net/core/skbuff.c:193
 alloc_skb include/linux/skbuff.h:997 [inline]
 netlink_alloc_large_skb net/netlink/af_netlink.c:1182 [inline]
 netlink_sendmsg+0xb29/0xfc0 net/netlink/af_netlink.c:1892
 sock_sendmsg_nosec net/socket.c:621 [inline]
 sock_sendmsg+0xd5/0x120 net/socket.c:631
 sock_write_iter+0x35e/0x5c0 net/socket.c:900
 call_write_iter include/linux/fs.h:1857 [inline]
 do_iter_readv_writev+0x8b0/0xa80 fs/read_write.c:680
 do_iter_write+0x185/0x5f0 fs/read_write.c:959
 compat_writev+0x233/0x410 fs/read_write.c:1273
 do_compat_writev+0x119/0x250 fs/read_write.c:1294