flags: 0x2fffc0000000000()
raw: 02fffc0000000000 0000000000000000 0000000000000000 00000000ffffff80
raw: ffffea0006499620 ffffea0006541c20 0000000000000003 0000000000000000
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: 1 PID: 30892 Comm: syz-executor6 Not tainted 4.17.0-rc7+ #81
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:ffff8801b41feb30 EFLAGS: 00010206
RAX: 0000000000000000 RBX: ffff88018daf3580 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff81a65d85 RDI: ffffed003683fd58
RBP: ffff8801b41fed90 R08: ffff8801d2722140 R09: 0000000000000006
R10: ffff8801d2722140 R11: 0000000000000000 R12: 000000000000301d
R13: ffffea000644f21c R14: ffff8801aa57ed80 R15: dffffc0000000000
FS:  00007fa0bfcd8700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000202f7ff0 CR3: 0000000197844000 CR4: 00000000001406e0
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+0xae5/0x13e0 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+0x70e/0xa70 net/tls/tls_main.c:264
 inet_release+0x104/0x1f0 net/ipv4/af_inet.c:427
 inet6_release+0x50/0x70 net/ipv6/af_inet6.c:459
 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:00007fa0bfcd7ce8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 000000000072bec8 RCX: 0000000000455a09
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000000072bec8
RBP: 000000000072bec8 R08: 0000000000000031 R09: 000000000072bea0
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000a3e81f R14: 00007fa0bfcd89c0 R15: 0000000000000000
Code: ff ff 41 89 86 c4 08 00 00 e8 04 06 05 00 e9 2c eb ff ff e8 2a d7 2b fb 48 8b bd b8 fd ff ff 48 c7 c6 20 09 53 88 e8 b7 e5 58 fb <0f> 0b 48 89 85 b8 fd ff ff e8 09 d7 2b fb 48 8b 85 b8 fd ff ff 
RIP: get_page include/linux/mm.h:853 [inline] RSP: ffff8801b41feb30
RIP: do_tcp_sendpages+0x1879/0x1e60 net/ipv4/tcp.c:1002 RSP: ffff8801b41feb30
---[ end trace 58259f5239d1837c ]---