net_ratelimit: 19 callbacks suppressed
TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies.  Check SNMP counters.
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BUG: KASAN: use-after-free in tls_fill_prepend include/net/tls.h:368 [inline]
BUG: KASAN: use-after-free in tls_push_record+0x10b9/0x1480 net/tls/tls_sw.c:220
Write of size 1 at addr ffff88019b85001f by task syz-executor0/9494

CPU: 0 PID: 9494 Comm: syz-executor0 Not tainted 4.19.0-rc7+ #144
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+0x1c4/0x2b4 lib/dump_stack.c:113
 print_address_description.cold.8+0x9/0x1ff mm/kasan/report.c:256
 kasan_report_error mm/kasan/report.c:354 [inline]
 kasan_report.cold.9+0x242/0x309 mm/kasan/report.c:412
 __asan_report_store1_noabort+0x17/0x20 mm/kasan/report.c:435
 tls_fill_prepend include/net/tls.h:368 [inline]
 tls_push_record+0x10b9/0x1480 net/tls/tls_sw.c:220
 tls_sw_push_pending_record+0x22/0x30 net/tls/tls_sw.c:257
 tls_push_pending_closed_record+0x10c/0x150 net/tls/tls_main.c:203
 tls_complete_pending_work include/net/tls.h:298 [inline]
 tls_sk_proto_close+0x7c2/0xbb0 net/tls/tls_main.c:270
 inet_release+0x104/0x1f0 net/ipv4/af_inet.c:428
 inet6_release+0x50/0x70 net/ipv6/af_inet6.c:457
 __sock_release+0xd7/0x250 net/socket.c:579
 sock_close+0x19/0x20 net/socket.c:1141
 __fput+0x385/0xa30 fs/file_table.c:278
 ____fput+0x15/0x20 fs/file_table.c:309
 task_work_run+0x1e8/0x2a0 kernel/task_work.c:113
 tracehook_notify_resume include/linux/tracehook.h:193 [inline]
 exit_to_usermode_loop+0x318/0x380 arch/x86/entry/common.c:166
 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:268 [inline]
 do_syscall_64+0x6be/0x820 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x457569
Code: fd b3 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 cb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f8d100eec78 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: 0000000000004000 RBX: 00007f8d100eec90 RCX: 0000000000457569
RDX: 000000000039a191 RSI: 00000000200005c0 RDI: 0000000000000003
RBP: 000000000072bf00 R08: 0000000020000000 R09: 000000000000001c
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f8d100ef6d4
R13: 00000000004c3921 R14: 00000000004d57d8 R15: 0000000000000006

The buggy address belongs to the page:
page:ffffea00066e1400 count:0 mapcount:-128 mapping:0000000000000000 index:0x0
flags: 0x2fffc0000000000()
raw: 02fffc0000000000 ffffea000633fa08 ffffea000659da08 0000000000000000
raw: 0000000000000000 0000000000000003 00000000ffffff7f 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff88019b84ff00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff88019b84ff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff88019b850000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
                            ^
 ffff88019b850080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff88019b850100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
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