IPv6: ADDRCONF(NETDEV_UP): batadv_slave_1: link is not ready
batman_adv: batadv0: Interface activated: batadv_slave_1
IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready
------------[ cut here ]------------
kernel BUG at include/linux/scatterlist.h:199!
TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies.  Check SNMP counters.
TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies.  Check SNMP counters.
==================================================================
BUG: KASAN: use-after-free in tls_sk_proto_close+0x828/0x900 net/tls/tls_main.c:290
Read of size 1 at addr ffff8800a503d458 by task syz-executor.2/7050

CPU: 1 PID: 7050 Comm: syz-executor.2 Not tainted 4.17.0-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+0x109/0x15a 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+0x242/0x2fe mm/kasan/report.c:412
 __asan_report_load1_noabort+0x14/0x20 mm/kasan/report.c:430
 tls_sk_proto_close+0x828/0x900 net/tls/tls_main.c:290
TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies.  Check SNMP counters.
 inet_release+0xd9/0x1c0 net/ipv4/af_inet.c:427
 inet6_release+0x46/0x60 net/ipv6/af_inet6.c:460
 sock_release+0x83/0x190 net/socket.c:594
 sock_close+0xd/0x20 net/socket.c:1149
 __fput+0x232/0x780 fs/file_table.c:209
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
 ____fput+0x9/0x10 fs/file_table.c:243
 task_work_run+0x111/0x180 kernel/task_work.c:113
CPU: 0 PID: 7051 Comm: syz-executor.2 Not tainted 4.17.0-rc3-syzkaller #0
 tracehook_notify_resume include/linux/tracehook.h:191 [inline]
 exit_to_usermode_loop+0x16a/0x1b0 arch/x86/entry/common.c:166
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 prepare_exit_to_usermode arch/x86/entry/common.c:196 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:265 [inline]
 do_syscall_64+0x407/0x4d0 arch/x86/entry/common.c:290
RIP: 0010:sg_mark_end include/linux/scatterlist.h:199 [inline]
RIP: 0010:tls_push_record+0xef0/0x1660 net/tls/tls_sw.c:234
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RSP: 0018:ffff880082d5f9b0 EFLAGS: 00010287
RIP: 0033:0x414f31
RSP: 002b:00007ffe6d4dc420 EFLAGS: 00000293
RAX: 0000000087654321 RBX: ffff88009a82e980 RCX: ffff88009a82ee20
 ORIG_RAX: 0000000000000003
RDX: 1ffff10013505dbf RSI: ffff88009a82eb70 RDI: ffff88009a82eb78
RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000414f31
RBP: ffff880082d5fa60 R08: ffff880082d5fd28 R09: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000081 RDI: 0000000000000004
R10: ffffed00150cac38 R11: ffff8800a86561c1 R12: ffff8800a561db80
RBP: 0000000000000000 R08: 0000000000760928 R09: ffffffffffffffff
R10: 00007ffe6d4dc4f0 R11: 0000000000000293 R12: 000000000075bfc8
R13: ffff88009a82edf8 R14: ffff88008cb20040 R15: 0000000000000017
R13: 0000000000000006 R14: 0000000000760930 R15: 000000000075bfd4
FS:  00007f5ded3df700(0000) GS:ffff8800aec00000(0000) knlGS:0000000000000000

CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Allocated by task 7105:
CR2: 00007f0c2069e000 CR3: 000000009f603000 CR4: 00000000001406f0
 save_stack+0x43/0xd0 mm/kasan/kasan.c:448
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
 set_track mm/kasan/kasan.c:460 [inline]
 kasan_kmalloc+0xc7/0xe0 mm/kasan/kasan.c:553
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
 kmem_cache_alloc_trace+0x152/0x790 mm/slab.c:3620
Call Trace:
 kmalloc include/linux/slab.h:512 [inline]
 kzalloc include/linux/slab.h:701 [inline]
 create_ctx net/tls/tls_main.c:514 [inline]
 tls_init+0x13a/0x910 net/tls/tls_main.c:626
 tcp_set_ulp+0x197/0x480 net/ipv4/tcp_ulp.c:153
 tls_sw_sendmsg+0xc5c/0x1110 net/tls/tls_sw.c:484
 do_tcp_setsockopt.isra.37+0x2ab/0x2210 net/ipv4/tcp.c:2587
 tcp_setsockopt+0x80/0xd0 net/ipv4/tcp.c:2892
 sock_common_setsockopt+0x73/0xf0 net/core/sock.c:3039
 __sys_setsockopt+0x13e/0x210 net/socket.c:1903
 inet_sendmsg+0x108/0x440 net/ipv4/af_inet.c:798
 __do_sys_setsockopt net/socket.c:1914 [inline]
 __se_sys_setsockopt net/socket.c:1911 [inline]
 __x64_sys_setsockopt+0xb9/0x150 net/socket.c:1911
 do_syscall_64+0xd0/0x4d0 arch/x86/entry/common.c:287
 sock_sendmsg_nosec net/socket.c:629 [inline]
 sock_sendmsg+0xb5/0xf0 net/socket.c:639
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
 __sys_sendto+0x1f2/0x2e0 net/socket.c:1789

Freed by task 7050:
 save_stack+0x43/0xd0 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:3498 [inline]
 kfree+0xcf/0x270 mm/slab.c:3813
 tls_sw_free_resources+0x277/0x340 net/tls/tls_sw.c:1037
 tls_sk_proto_close+0x558/0x900 net/tls/tls_main.c:281
 inet_release+0xd9/0x1c0 net/ipv4/af_inet.c:427
 inet6_release+0x46/0x60 net/ipv6/af_inet6.c:460
 sock_release+0x83/0x190 net/socket.c:594
 __do_sys_sendto net/socket.c:1801 [inline]
 __se_sys_sendto net/socket.c:1797 [inline]
 __x64_sys_sendto+0xdc/0x1a0 net/socket.c:1797
 sock_close+0xd/0x20 net/socket.c:1149
 __fput+0x232/0x780 fs/file_table.c:209
 do_syscall_64+0xd0/0x4d0 arch/x86/entry/common.c:287
 ____fput+0x9/0x10 fs/file_table.c:243
 task_work_run+0x111/0x180 kernel/task_work.c:113
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
 tracehook_notify_resume include/linux/tracehook.h:191 [inline]
 exit_to_usermode_loop+0x16a/0x1b0 arch/x86/entry/common.c:166
RIP: 0033:0x45b399
 prepare_exit_to_usermode arch/x86/entry/common.c:196 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:265 [inline]
 do_syscall_64+0x407/0x4d0 arch/x86/entry/common.c:290
RSP: 002b:00007f5ded3dec78 EFLAGS: 00000246
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
 ORIG_RAX: 000000000000002c

RAX: ffffffffffffffda RBX: 00007f5ded3df6d4 RCX: 000000000045b399
The buggy address belongs to the object at ffff8800a503d400
 which belongs to the cache kmalloc-256 of size 256
The buggy address is located 88 bytes inside of
 256-byte region [ffff8800a503d400, ffff8800a503d500)
RDX: 00000000e0ffffff RSI: 00000000200005c0 RDI: 0000000000000004
The buggy address belongs to the page:
RBP: 000000000075bf20 R08: 0000000000000000 R09: 00000000000000d8
page:ffffea0002940f40 count:1 mapcount:0 mapping:ffff8800a503d040 index:0x0
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
flags: 0xfffe0000000100(slab)
R13: 00000000000009d6 R14: 00000000004cb45d R15: 000000000075bf2c
raw: 00fffe0000000100 ffff8800a503d040 0000000000000000 000000010000000c
Code: 
raw: ffffea0002940e60 ffffea0002941020 ffff8800aa8007c0 0000000000000000
48 
page dumped because: kasan: bad access detected
b8 

00 
Memory state around the buggy address:
 ffff8800a503d300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
00 
 ffff8800a503d380: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
00 
>ffff8800a503d400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
00 
                                                    ^
00 
 ffff8800a503d480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
fc 
 ffff8800a503d500: fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb fb
ff 
==================================================================
df