EXT4-fs (loop5): VFS: Can't find ext4 filesystem
TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies.  Check SNMP counters.
==================================================================
BUG: KASAN: use-after-free in tls_write_space+0x2b2/0x310 net/tls/tls_main.c:220
Read of size 1 at addr ffff888099ad3660 by task syz-executor.1/2159

CPU: 1 PID: 2159 Comm: syz-executor.1 Not tainted 4.19.69 #43
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+0x172/0x1f0 lib/dump_stack.c:113
 print_address_description.cold+0x7c/0x20d 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+0x8c/0x2ba mm/kasan/report.c:396
 __asan_report_load1_noabort+0x14/0x20 mm/kasan/report.c:430
 tls_write_space+0x2b2/0x310 net/tls/tls_main.c:220
 tcp_new_space net/ipv4/tcp_input.c:5155 [inline]
 tcp_check_space+0x430/0x720 net/ipv4/tcp_input.c:5166
 tcp_data_snd_check net/ipv4/tcp_input.c:5176 [inline]
 tcp_rcv_established+0x9e9/0x1f10 net/ipv4/tcp_input.c:5667
 tcp_v6_do_rcv+0x4b0/0x13c0 net/ipv6/tcp_ipv6.c:1326
 sk_backlog_rcv include/net/sock.h:941 [inline]
 __release_sock+0x129/0x390 net/core/sock.c:2334
 release_sock+0x59/0x1c0 net/core/sock.c:2850
 tls_sk_proto_close+0x691/0xa20 net/tls/tls_main.c:309
 inet_release+0xff/0x1e0 net/ipv4/af_inet.c:428
 inet6_release+0x53/0x80 net/ipv6/af_inet6.c:472
 __sock_release+0xce/0x2a0 net/socket.c:579
 sock_close+0x1b/0x30 net/socket.c:1140
 __fput+0x2dd/0x8b0 fs/file_table.c:278
 ____fput+0x16/0x20 fs/file_table.c:309
 task_work_run+0x145/0x1c0 kernel/task_work.c:113
 tracehook_notify_resume include/linux/tracehook.h:193 [inline]
 exit_to_usermode_loop+0x273/0x2c0 arch/x86/entry/common.c:167
 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:271 [inline]
 do_syscall_64+0x53d/0x620 arch/x86/entry/common.c:296
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x413561
Code: 75 14 b8 03 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 04 1b 00 00 c3 48 83 ec 08 e8 0a fc ff ff 48 89 04 24 b8 03 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 53 fc ff ff 48 89 d0 48 83 c4 08 48 3d 01
RSP: 002b:00007ffeaa7d5300 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000413561
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 0000000000000001 R08: 0000000096c2562a R09: 0000000096c2562e
R10: 00007ffeaa7d53e0 R11: 0000000000000293 R12: 000000000075c9a0
R13: 000000000075c9a0 R14: 0000000000761308 R15: ffffffffffffffff

Allocated by task 2167:
 save_stack+0x45/0xd0 mm/kasan/kasan.c:448
 set_track mm/kasan/kasan.c:460 [inline]
 kasan_kmalloc mm/kasan/kasan.c:553 [inline]
 kasan_kmalloc+0xce/0xf0 mm/kasan/kasan.c:531
 kmem_cache_alloc_trace+0x152/0x760 mm/slab.c:3625
 kmalloc include/linux/slab.h:515 [inline]
 kzalloc include/linux/slab.h:709 [inline]
 create_ctx+0x46/0x1f0 net/tls/tls_main.c:550
 tls_init+0x158/0x7a0 net/tls/tls_main.c:683
 tcp_set_ulp+0x216/0x5f0 net/ipv4/tcp_ulp.c:155
 do_tcp_setsockopt.isra.0+0x321/0x2390 net/ipv4/tcp.c:2754
 tcp_setsockopt+0xbe/0xe0 net/ipv4/tcp.c:3068
 sock_common_setsockopt+0x94/0xd0 net/core/sock.c:3041
 __sys_setsockopt+0x17a/0x280 net/socket.c:1901
 __do_sys_setsockopt net/socket.c:1912 [inline]
 __se_sys_setsockopt net/socket.c:1909 [inline]
 __x64_sys_setsockopt+0xbe/0x150 net/socket.c:1909
 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe

Freed by task 2159:
 save_stack+0x45/0xd0 mm/kasan/kasan.c:448
 set_track mm/kasan/kasan.c:460 [inline]
 __kasan_slab_free+0x102/0x150 mm/kasan/kasan.c:521
 kasan_slab_free+0xe/0x10 mm/kasan/kasan.c:528
 __cache_free mm/slab.c:3503 [inline]
 kfree+0xcf/0x220 mm/slab.c:3822
 tls_ctx_free.part.0+0x32/0x40 net/tls/tls_main.c:251
 tls_ctx_free net/tls/tls_main.c:246 [inline]
 tls_sk_proto_close+0x684/0xa20 net/tls/tls_main.c:304
 inet_release+0xff/0x1e0 net/ipv4/af_inet.c:428
 inet6_release+0x53/0x80 net/ipv6/af_inet6.c:472
 __sock_release+0xce/0x2a0 net/socket.c:579
 sock_close+0x1b/0x30 net/socket.c:1140
 __fput+0x2dd/0x8b0 fs/file_table.c:278
 ____fput+0x16/0x20 fs/file_table.c:309
 task_work_run+0x145/0x1c0 kernel/task_work.c:113
 tracehook_notify_resume include/linux/tracehook.h:193 [inline]
 exit_to_usermode_loop+0x273/0x2c0 arch/x86/entry/common.c:167
 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:271 [inline]
 do_syscall_64+0x53d/0x620 arch/x86/entry/common.c:296
 entry_SYSCALL_64_after_hwframe+0x49/0xbe

The buggy address belongs to the object at ffff888099ad3580
 which belongs to the cache kmalloc-512 of size 512
The buggy address is located 224 bytes inside of
 512-byte region [ffff888099ad3580, ffff888099ad3780)
The buggy address belongs to the page:
page:ffffea000266b4c0 count:1 mapcount:0 mapping:ffff88812c3f0940 index:0x0
flags: 0x1fffc0000000100(slab)
raw: 01fffc0000000100 ffffea000152e908 ffffea000228a6c8 ffff88812c3f0940
raw: 0000000000000000 ffff888099ad3080 0000000100000006 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff888099ad3500: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff888099ad3580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888099ad3600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                                       ^
 ffff888099ad3680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888099ad3700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies.  Check SNMP counters.