EXT4-fs (loop4): mounted filesystem without journal. Opts: ,errors=continue
TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies.  Check SNMP counters.
EXT4-fs (loop4): Online resizing not supported with bigalloc
==================================================================
BUG: KASAN: slab-out-of-bounds in sg_mark_end include/linux/scatterlist.h:190 [inline]
BUG: KASAN: slab-out-of-bounds in tls_push_record+0x10cc/0x1270 net/tls/tls_sw.c:255
Read of size 8 at addr ffff888079924ab8 by task syz-executor.3/10610

CPU: 1 PID: 10610 Comm: syz-executor.3 Not tainted 4.14.262-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x1b2/0x281 lib/dump_stack.c:58
 print_address_description.cold+0x54/0x1d3 mm/kasan/report.c:252
 kasan_report_error.cold+0x8a/0x191 mm/kasan/report.c:351
 kasan_report mm/kasan/report.c:409 [inline]
 __asan_report_load8_noabort+0x68/0x70 mm/kasan/report.c:430
 sg_mark_end include/linux/scatterlist.h:190 [inline]
 tls_push_record+0x10cc/0x1270 net/tls/tls_sw.c:255
 tls_handle_open_record net/tls/tls_main.c:158 [inline]
 tls_sk_proto_close+0x6f0/0x8b0 net/tls/tls_main.c:270
 inet_release+0xdf/0x1b0 net/ipv4/af_inet.c:425
 inet6_release+0x4c/0x70 net/ipv6/af_inet6.c:450
 __sock_release+0xcd/0x2b0 net/socket.c:602
 sock_close+0x15/0x20 net/socket.c:1139
 __fput+0x25f/0x7a0 fs/file_table.c:210
 task_work_run+0x11f/0x190 kernel/task_work.c:113
 tracehook_notify_resume include/linux/tracehook.h:191 [inline]
 exit_to_usermode_loop+0x1ad/0x200 arch/x86/entry/common.c:164
 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:270 [inline]
 do_syscall_64+0x4a3/0x640 arch/x86/entry/common.c:297
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x7f1eb3d01afb
RSP: 002b:00007fff431c8fd0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000004 RCX: 00007f1eb3d01afb
RDX: 0000000000000000 RSI: 00007f1eb3cc6000 RDI: 0000000000000003
RBP: 00007f1eb3e63960 R08: 0000000000000000 R09: 00000000e0f0a99d
R10: 0000000000000000 R11: 0000000000000293 R12: 000000000001c0a3
R13: 00007fff431c90d0 R14: 00007fff431c90f0 R15: 0000000000000032

Allocated by task 7967:
 save_stack mm/kasan/kasan.c:447 [inline]
 set_track mm/kasan/kasan.c:459 [inline]
 kasan_kmalloc+0xeb/0x160 mm/kasan/kasan.c:551
 __do_kmalloc_node mm/slab.c:3682 [inline]
 __kmalloc_node_track_caller+0x4c/0x70 mm/slab.c:3696
 __kmalloc_reserve net/core/skbuff.c:137 [inline]
 __alloc_skb+0x96/0x510 net/core/skbuff.c:205
 alloc_skb_fclone include/linux/skbuff.h:1022 [inline]
 sk_stream_alloc_skb+0xb1/0x760 net/ipv4/tcp.c:855
 tcp_sendmsg_locked+0xed8/0x2ef0 net/ipv4/tcp.c:1301
 tcp_sendmsg+0x2b/0x40 net/ipv4/tcp.c:1457
 inet_sendmsg+0x11a/0x4e0 net/ipv4/af_inet.c:762
 sock_sendmsg_nosec net/socket.c:646 [inline]
 sock_sendmsg+0xb5/0x100 net/socket.c:656
 sock_write_iter+0x22c/0x370 net/socket.c:925
 call_write_iter include/linux/fs.h:1780 [inline]
 new_sync_write fs/read_write.c:469 [inline]
 __vfs_write+0x44c/0x630 fs/read_write.c:482
 vfs_write+0x17f/0x4d0 fs/read_write.c:544
 SYSC_write fs/read_write.c:590 [inline]
 SyS_write+0xf2/0x210 fs/read_write.c:582
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb

Freed by task 7967:
 save_stack mm/kasan/kasan.c:447 [inline]
 set_track mm/kasan/kasan.c:459 [inline]
 kasan_slab_free+0xc3/0x1a0 mm/kasan/kasan.c:524
------------[ cut here ]------------
 __cache_free mm/slab.c:3496 [inline]
 kfree+0xc9/0x250 mm/slab.c:3815
 skb_free_head net/core/skbuff.c:563 [inline]
 skb_release_data+0x5f6/0x820 net/core/skbuff.c:583
kernel BUG at include/linux/scatterlist.h:190!
 skb_release_all net/core/skbuff.c:640 [inline]
 __kfree_skb+0x46/0x60 net/core/skbuff.c:654
 sk_wmem_free_skb include/net/sock.h:1427 [inline]
 tcp_clean_rtx_queue net/ipv4/tcp_input.c:3187 [inline]
 tcp_ack+0x187b/0x4580 net/ipv4/tcp_input.c:3687
 tcp_rcv_established+0xebb/0x1810 net/ipv4/tcp_input.c:5501
 tcp_v4_do_rcv+0x541/0x7d0 net/ipv4/tcp_ipv4.c:1476
 sk_backlog_rcv include/net/sock.h:923 [inline]
 __release_sock+0x12a/0x350 net/core/sock.c:2287
 release_sock+0x54/0x1b0 net/core/sock.c:2825
 tcp_sendmsg+0x36/0x40 net/ipv4/tcp.c:1458
 inet_sendmsg+0x11a/0x4e0 net/ipv4/af_inet.c:762
 sock_sendmsg_nosec net/socket.c:646 [inline]
 sock_sendmsg+0xb5/0x100 net/socket.c:656
 sock_write_iter+0x22c/0x370 net/socket.c:925
 call_write_iter include/linux/fs.h:1780 [inline]
 new_sync_write fs/read_write.c:469 [inline]
 __vfs_write+0x44c/0x630 fs/read_write.c:482
 vfs_write+0x17f/0x4d0 fs/read_write.c:544
 SYSC_write fs/read_write.c:590 [inline]
 SyS_write+0xf2/0x210 fs/read_write.c:582
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb

The buggy address belongs to the object at ffff888079924240
 which belongs to the cache kmalloc-2048 of size 2048
The buggy address is located 120 bytes to the right of
 2048-byte region [ffff888079924240, ffff888079924a40)
The buggy address belongs to the page:
page:ffffea0001e64900 count:1 mapcount:0 mapping:ffff888079924240 index:0x0 compound_mapcount: 0
flags: 0xfff00000008100(slab|head)
raw: 00fff00000008100 ffff888079924240 0000000000000000 0000000100000003
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
raw: ffffea000285eca0 ffffea0001e66420 ffff88813fe74c40 0000000000000000
Modules linked in:
page dumped because: kasan: bad access detected

CPU: 0 PID: 10598 Comm: syz-executor.0 Not tainted 4.14.262-syzkaller #0
Memory state around the buggy address:
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff888079924980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
task: ffff88809e8ac4c0 task.stack: ffff8880b3a90000
 ffff888079924a00: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
RIP: 0010:sg_mark_end include/linux/scatterlist.h:190 [inline]
RIP: 0010:tls_push_record+0xd41/0x1270 net/tls/tls_sw.c:255
>ffff888079924a80: fc fc fc fc fc fc fc fc 00 00 00 00 00 00 00 00
RSP: 0018:ffff8880b3a97c28 EFLAGS: 00010297
                                        ^
 ffff888079924b00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff888079924b80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
RAX: ffff88809e8ac4c0 RBX: ffff8880a9a15600 RCX: 0000000000000000
==================================================================
RDX: 0000000000000000 RSI: ffff8880a51a1120 RDI: ffff8880a51a10f8
RBP: ffff8880a3502000 R08: 0000000000000000 R09: 0000000000000002
R10: 0000000000000000 R11: ffff88809e8ac4c0 R12: ffff88809af3ec80
R13: 0000000000000017 R14: ffff8880a51a1100 R15: ffff8880a51a10f8
FS:  0000555555ab5400(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033