flags: 0x2fffc0000000000()
raw: 02fffc0000000000 0000000000000000 0000000000000000 00000001fffffe00
raw: dead000000000100 dead000000000200 0000000000000000 ffff8801cfa96980
page dumped because: VM_BUG_ON_PAGE(page_ref_count(page) <= 0)
------------[ cut here ]------------
kernel BUG at include/linux/mm.h:853!
invalid opcode: 0000 [#1] SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 0 PID: 7884 Comm: syz-executor5 Not tainted 4.17.0-rc6+ #63
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:get_page include/linux/mm.h:853 [inline]
RIP: 0010:do_tcp_sendpages+0x1879/0x1e60 net/ipv4/tcp.c:1002
RSP: 0018:ffff88017c916b30 EFLAGS: 00010206
RAX: 0000000000000000 RBX: ffff8801adeab500 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff81a5c1d5 RDI: ffffed002f922d58
RBP: ffff88017c916d90 R08: ffff88017c876440 R09: 0000000000000006
R10: ffff88017c876440 R11: 0000000000000000 R12: 0000000000003c3d
R13: ffffea0005f3aa1c R14: ffff880180470e80 R15: dffffc0000000000
FS:  00007ff9ecf56700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2091cdf000 CR3: 0000000183adb000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 tls_push_sg+0x25b/0x860 net/tls/tls_main.c:126
 tls_push_record+0xaf1/0x13e0 net/tls/tls_sw.c:266
 tls_sw_push_pending_record+0x22/0x30 net/tls/tls_sw.c:276
 tls_handle_open_record net/tls/tls_main.c:164 [inline]
 tls_sk_proto_close+0x7b4/0xa00 net/tls/tls_main.c:263
 inet_release+0x104/0x1f0 net/ipv4/af_inet.c:427
 inet6_release+0x50/0x70 net/ipv6/af_inet6.c:460
 sock_release+0x96/0x1b0 net/socket.c:594
 sock_close+0x16/0x20 net/socket.c:1149
 __fput+0x34d/0x890 fs/file_table.c:209
 ____fput+0x15/0x20 fs/file_table.c:243
 task_work_run+0x1e4/0x290 kernel/task_work.c:113
 exit_task_work include/linux/task_work.h:22 [inline]
 do_exit+0x1aee/0x2730 kernel/exit.c:865
 do_group_exit+0x16f/0x430 kernel/exit.c:968
 get_signal+0x886/0x1960 kernel/signal.c:2482
 do_signal+0x98/0x2040 arch/x86/kernel/signal.c:810
 exit_to_usermode_loop+0x28a/0x310 arch/x86/entry/common.c:162
 prepare_exit_to_usermode arch/x86/entry/common.c:196 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:265 [inline]
 do_syscall_64+0x6ac/0x800 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x455a09
RSP: 002b:00007ff9ecf55ce8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 000000000072bf78 RCX: 0000000000455a09
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000000072bf78
RBP: 000000000072bf78 R08: 0000000000000000 R09: 000000000072bf50
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffdd72ea01f R14: 00007ff9ecf569c0 R15: 0000000000000001
Code: ff ff 41 89 86 b4 08 00 00 e8 84 f7 04 00 e9 2c eb ff ff e8 8a 36 30 fb 48 8b bd b8 fd ff ff 48 c7 c6 e0 8b 52 88 e8 07 a5 5c fb <0f> 0b 48 89 85 b8 fd ff ff e8 69 36 30 fb 48 8b 85 b8 fd ff ff 
RIP: get_page include/linux/mm.h:853 [inline] RSP: ffff88017c916b30
RIP: do_tcp_sendpages+0x1879/0x1e60 net/ipv4/tcp.c:1002 RSP: ffff88017c916b30
---[ end trace e7b4f8ce72d11c5a ]---