bash don't start port on 1703

when i start redis or nginx in bash,it seems success,but when i test it for telnet ,it do not open,and then i go to cmd , use netstat,i can't find the port.i tried to reinstall the bash and the windows,it don't work either

Your Windows build number
15063.11

Bash can not connect to Internet

@andmeics no, i can use apt install the program ,can ping also,just can't open port

Is it possible that you have a firewall that's blocking these ports?
What IP address are you listening on?  And what IP address are you connecting to?  (Note that localhost is not an IP address; it is valid for applications to resolve it to either <IP_ADDRESS> (IPv4) or ::1 (IPv6), and clients that only try to connect to one of those two will miss servers that are only listening on the other.)

@aseering start nginx and redis use the default conf ,and in 1607,it works well,when i update to 1703,it has the problem
i go to the cmd ,the netstat can't find the port for nginx or redis
i tried reinstall the win10 1703,it don't work either

@zuohl -- could you please answer my questions?

@aseering where can i find log for bash ,may be i can find the reason for this

@aseering sorry , now you can see ,i close the firewall,and i use the ipv4 ,it can't connet

@aseering

i tried change the port for nginx and disabled the ipv6,it also does't work

@zuohl -- thanks for posting the additional information.
Hm...  So, nginx works just fine for me in 1703.  I ran the following commands:
sudo apt install -y nginx
sudo service nginx start

No errors were printed, just progress messages.  (I can paste those messages here if they would be useful; let me know.)  Then, I tried the following, at a separate bash prompt on the same machine:
$ telnet <IP_ADDRESS> 80
Trying <IP_ADDRESS>...
Connected to <IP_ADDRESS>.
Escape character is '^]'.

I was also able to navigate to http://localhost in a Windows Web browser (Google Chrome); I got the default "Welcome to nginx!" page.
So, it works for me.  Are you doing anything different than the steps above?
(I haven't tried redis.  If you manage to get nginx working and you still can't get redis working, let me know and I can give it a try.)

Regarding logging:  As far as I know (?), WSL doesn't log much by default.  If you want a detailed log of an application's activity, you can use Linux strace command.  strace must be run directly on the program that you want to log (not on an init script), and the command must be configured to run in the foreground (not as a daemon).  So, for example:
$ sudo strace -ff nginx -g 'daemon off;'

strace produces one line of output every time the application being traced calls into WSL, with the arguments and the return value of the call.  For most applications, this is a lot of output.  There are a lot of options to control this output; see man strace for details.
You might also want to look in /var/log/nginx/, to see if nginx's log contains any useful information.

@zuohl - You might also have to open these ports up in the Windows Firewall. And, as @aseering suggests, take a look at the nginx log file to see if there is anything interesting there.

execve("/usr/sbin/nginx", ["nginx", "-g", "daemon off;"], [/* 15 vars /]) = 0
brk(NULL)                               = 0x7fffbb5dc000
access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory)
mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7a1e8d0000
access("/etc/ld.so.preload", R_OK)      = -1 ENOENT (No such file or directory)
open("/etc/ld.so.cache", O_RDONLY|O_CLOEXEC) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=21493, ...}) = 0
mmap(NULL, 21493, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7f7a1e8ca000
close(3)                                = 0
access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory)
open("/lib/x86_64-linux-gnu/libdl.so.2", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\240\r\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0644, st_size=14608, ...}) = 0
mmap(NULL, 2109680, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f7a1e3f0000
mprotect(0x7f7a1e3f3000, 2093056, PROT_NONE) = 0
mmap(0x7f7a1e5f2000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x2000) = 0x7f7a1e5f2000
close(3)                                = 0
access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory)
open("/lib/x86_64-linux-gnu/libpthread.so.0", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\260\0\0\0\0\0\0"..., 832) = 832 fstat(3, {st_mode=S_IFREG|0755, st_size=138696, ...}) = 0 mmap(NULL, 2212904, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f7a1e1d0000 mprotect(0x7f7a1e1e8000, 2093056, PROT_NONE) = 0 mmap(0x7f7a1e3e7000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x17000) = 0x7f7a1e3e7000 mmap(0x7f7a1e3e9000, 13352, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f7a1e3e9000 close(3)                                = 0 access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory) open("/lib/x86_64-linux-gnu/libcrypt.so.1", O_RDONLY|O_CLOEXEC) = 3 read(3<EMAIL_ADDRESS>832) = 832 fstat(3, {st_mode=S_IFREG|0644, st_size=39224, ...}) = 0 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7a1e8c0000 mmap(NULL, 2322912, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f7a1df90000 mprotect(0x7f7a1df99000, 2093056, PROT_NONE) = 0 mmap(0x7f7a1e198000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x8000) = 0x7f7a1e198000 mmap(0x7f7a1e19a000, 184800, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f7a1e19a000 close(3)                                = 0 access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory) open("/lib/x86_64-linux-gnu/libpcre.so.3", O_RDONLY|O_CLOEXEC) = 3 read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0000\25\0\0\0\0\0\0"..., 832) = 832 fstat(3, {st_mode=S_IFREG|0644, st_size=456632, ...}) = 0 mmap(NULL, 2552072, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f7a1dd20000 mprotect(0x7f7a1dd8e000, 2097152, PROT_NONE) = 0 mmap(0x7f7a1df8e000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x6e000) = 0x7f7a1df8e000 close(3)                                = 0 access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory) open("/lib/x86_64-linux-gnu/libssl.so.1.0.0", O_RDONLY|O_CLOEXEC) = 3 read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\320^\1\0\0\0\0\0"..., 832) = 832 fstat(3, {st_mode=S_IFREG|0644, st_size=428384, ...}) = 0 mmap(NULL, 2523600, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f7a1dab0000 mprotect(0x7f7a1db0e000, 2097152, PROT_NONE) = 0 mmap(0x7f7a1dd0e000, 45056, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x5e000) = 0x7f7a1dd0e000 close(3)                                = 0 access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory) open("/lib/x86_64-linux-gnu/libcrypto.so.1.0.0", O_RDONLY|O_CLOEXEC) = 3 read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\0\36\6\0\0\0\0\0"..., 832) = 832 fstat(3, {st_mode=S_IFREG|0644, st_size=2361856, ...}) = 0 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7a1e8b0000 mmap(NULL, 4471680, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f7a1d660000 mprotect(0x7f7a1d87a000, 2093056, PROT_NONE) = 0 mmap(0x7f7a1da79000, 163840, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x219000) = 0x7f7a1da79000 mmap(0x7f7a1daa1000, 11136, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f7a1daa1000 close(3)                                = 0 access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory) open("/lib/x86_64-linux-gnu/libz.so.1", O_RDONLY|O_CLOEXEC) = 3 read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\360\35\0\0\0\0\0\0"..., 832) = 832 fstat(3, {st_mode=S_IFREG|0644, st_size=104824, ...}) = 0 mmap(NULL, 2199880, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f7a1d440000 mprotect(0x7f7a1d459000, 2093056, PROT_NONE) = 0 mmap(0x7f7a1d658000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x18000) = 0x7f7a1d658000 close(3)                                = 0 access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory) open("/usr/lib/x86_64-linux-gnu/libxml2.so.2", O_RDONLY|O_CLOEXEC) = 3 read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\300\326\2\0\0\0\0\0"..., 832) = 832 fstat(3, {st_mode=S_IFREG|0644, st_size=1805560, ...}) = 0 mmap(NULL, 3905976, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f7a1d080000 mprotect(0x7f7a1d22f000, 2097152, PROT_NONE) = 0 mmap(0x7f7a1d42f000, 40960, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1af000) = 0x7f7a1d42f000 mmap(0x7f7a1d439000, 2488, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f7a1d439000 close(3)                                = 0 access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory) open("/usr/lib/x86_64-linux-gnu/libxslt.so.1", O_RDONLY|O_CLOEXEC) = 3 read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0000\213\0\0\0\0\0\0"..., 832) = 832 fstat(3, {st_mode=S_IFREG|0644, st_size=247952, ...}) = 0 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7a1e8a0000 mmap(NULL, 2344296, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f7a1ce40000 mprotect(0x7f7a1ce7b000, 2097152, PROT_NONE) = 0 mmap(0x7f7a1d07b000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x3b000) = 0x7f7a1d07b000 close(3)                                = 0 access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory) open("/usr/lib/x86_64-linux-gnu/libexslt.so.0", O_RDONLY|O_CLOEXEC) = 3 read(3<EMAIL_ADDRESS>832) = 832 fstat(3, {st_mode=S_IFREG|0644, st_size=83816, ...}) = 0 mmap(NULL, 2179096, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f7a1cc20000 mprotect(0x7f7a1cc34000, 2093056, PROT_NONE) = 0 mmap(0x7f7a1ce33000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x13000) = 0x7f7a1ce33000 close(3)                                = 0 access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory) open("/usr/lib/x86_64-linux-gnu/libgd.so.3", O_RDONLY|O_CLOEXEC) = 3 read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0P\325\0\0\0\0\0\0"..., 832) = 832 fstat(3, {st_mode=S_IFREG|0644, st_size=422592, ...}) = 0 mmap(NULL, 2538096, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f7a1c9b0000 mprotect(0x7f7a1c9f3000, 2093056, PROT_NONE) = 0 mmap(0x7f7a1cbf2000, 151552, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x42000) = 0x7f7a1cbf2000 mmap(0x7f7a1cc17000, 19056, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f7a1cc17000 close(3)                                = 0 access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory) open("/usr/lib/x86_64-linux-gnu/libGeoIP.so.1", O_RDONLY|O_CLOEXEC) = 3 read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\260e\0\0\0\0\0\0"..., 832) = 832 fstat(3, {st_mode=S_IFREG|0644, st_size=199264, ...}) = 0 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7a1e890000 mmap(NULL, 2294448, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f7a1c770000 mprotect(0x7f7a1c79f000, 2093056, PROT_NONE) = 0 mmap(0x7f7a1c99e000, 12288, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x2e000) = 0x7f7a1c99e000 close(3)                                = 0 access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory) open("/lib/x86_64-linux-gnu/libc.so.6", O_RDONLY|O_CLOEXEC) = 3 read(3, "\177ELF\2\1\1\3\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0P\t\2\0\0\0\0\0"..., 832) = 832 fstat(3, {st_mode=S_IFREG|0755, st_size=1864888, ...}) = 0 mmap(NULL, 3967392, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f7a1c3a0000 mprotect(0x7f7a1c55f000, 2097152, PROT_NONE) = 0 mmap(0x7f7a1c75f000, 24576, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1bf000) = 0x7f7a1c75f000 mmap(0x7f7a1c765000, 14752, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f7a1c765000 close(3)                                = 0 access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory) open("/usr/lib/x86_64-linux-gnu/libicuuc.so.55", O_RDONLY|O_CLOEXEC) = 3 read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0PT\5\0\0\0\0\0"..., 832) = 832 fstat(3, {st_mode=S_IFREG|0644, st_size=1636360, ...}) = 0 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7a1e880000 mmap(NULL, 3750688, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f7a1c000000 mprotect(0x7f7a1c17f000, 2097152, PROT_NONE) = 0 mmap(0x7f7a1c37f000, 69632, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x17f000) = 0x7f7a1c37f000 mmap(0x7f7a1c390000, 15136, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f7a1c390000 close(3)                                = 0 access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory) open("/lib/x86_64-linux-gnu/liblzma.so.5", O_RDONLY|O_CLOEXEC) = 3 read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\320 \0\0\0\0\0\0"..., 832) = 832 fstat(3, {st_mode=S_IFREG|0644, st_size=137400, ...}) = 0 mmap(NULL, 2232456, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f7a1bdd0000 mprotect(0x7f7a1bdf1000, 2093056, PROT_NONE) = 0 mmap(0x7f7a1bff0000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x20000) = 0x7f7a1bff0000 close(3)                                = 0 access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory) open("/lib/x86_64-linux-gnu/libm.so.6", O_RDONLY|O_CLOEXEC) = 3 read(3, "\177ELF\2\1\1\3\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\0V\0\0\0\0\0\0"..., 832) = 832 fstat(3, {st_mode=S_IFREG|0644, st_size=1088952, ...}) = 0 mmap(NULL, 3178744, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f7a1bac0000 mprotect(0x7f7a1bbc8000, 2093056, PROT_NONE) = 0 mmap(0x7f7a1bdc7000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x107000) = 0x7f7a1bdc7000 close(3)                                = 0 access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory) open("/lib/x86_64-linux-gnu/libgcrypt.so.20", O_RDONLY|O_CLOEXEC) = 3 read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\0\215\0\0\0\0\0\0"..., 832) = 832 fstat(3, {st_mode=S_IFREG|0644, st_size=919168, ...}) = 0 mmap(NULL, 3015360, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f7a1b7d0000 mprotect(0x7f7a1b8a8000, 2093056, PROT_NONE) = 0 mmap(0x7f7a1baa7000, 36864, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0xd7000) = 0x7f7a1baa7000 mmap(0x7f7a1bab0000, 704, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f7a1bab0000 close(3)                                = 0 access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory) mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7a1e870000 open("/usr/lib/x86_64-linux-gnu/libjpeg.so.8", O_RDONLY|O_CLOEXEC) = 3 read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0P=\0\0\0\0\0\0"..., 832) = 832 fstat(3, {st_mode=S_IFREG|0644, st_size=363264, ...}) = 0 mmap(NULL, 2458248, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f7a1b570000 mprotect(0x7f7a1b5c7000, 2097152, PROT_NONE) = 0 mmap(0x7f7a1b7c7000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x57000) = 0x7f7a1b7c7000 close(3)                                = 0 access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory) open("/lib/x86_64-linux-gnu/libpng12.so.0", O_RDONLY|O_CLOEXEC) = 3 read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0p:\0\0\0\0\0\0"..., 832) = 832 fstat(3, {st_mode=S_IFREG|0644, st_size=149904, ...}) = 0 mmap(NULL, 2244992, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f7a1b340000 mprotect(0x7f7a1b364000, 2093056, PROT_NONE) = 0 mmap(0x7f7a1b563000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x23000) = 0x7f7a1b563000 close(3)                                = 0 access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory) open("/usr/lib/x86_64-linux-gnu/libfreetype.so.6", O_RDONLY|O_CLOEXEC) = 3 read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\334\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0644, st_size=694800, ...}) = 0
mmap(NULL, 2789864, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f7a1b090000
mprotect(0x7f7a1b134000, 2093056, PROT_NONE) = 0
mmap(0x7f7a1b333000, 28672, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0xa3000) = 0x7f7a1b333000
close(3)                                = 0
access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory)
open("/usr/lib/x86_64-linux-gnu/libfontconfig.so.1", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0`m\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0644, st_size=273832, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7a1e860000
mmap(NULL, 2369512, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f7a1ae40000
mprotect(0x7f7a1ae7d000, 2093056, PROT_NONE) = 0
mmap(0x7f7a1b07c000, 28672, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x3c000) = 0x7f7a1b07c000
close(3)                                = 0
access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory)
open("/usr/lib/x86_64-linux-gnu/libXpm.so.4", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0@)\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0644, st_size=72520, ...}) = 0
mmap(NULL, 2167664, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f7a1ac20000
mprotect(0x7f7a1ac30000, 2097152, PROT_NONE) = 0
mmap(0x7f7a1ae30000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x10000) = 0x7f7a1ae30000
close(3)                                = 0
access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory)
open("/usr/lib/x86_64-linux-gnu/libvpx.so.3", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0P7\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0644, st_size=2230840, ...}) = 0
mmap(NULL, 4338120, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f7a1a7f0000
mprotect(0x7f7a1aa0f000, 2093056, PROT_NONE) = 0
mmap(0x7f7a1ac0e000, 12288, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x21e000) = 0x7f7a1ac0e000
mmap(0x7f7a1ac11000, 8648, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f7a1ac11000
close(3)                                = 0
access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory)
open("/usr/lib/x86_64-linux-gnu/libtiff.so.5", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\220m\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0644, st_size=475496, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7a1e850000
mmap(NULL, 2571120, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f7a1a570000
mprotect(0x7f7a1a5e0000, 2097152, PROT_NONE) = 0
mmap(0x7f7a1a7e0000, 16384, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x70000) = 0x7f7a1a7e0000
close(3)                                = 0
access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory)
open("/usr/lib/x86_64-linux-gnu/libicudata.so.55", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0000\5\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0644, st_size=25913104, ...}) = 0
mmap(NULL, 28008464, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f7a18ab0000
mprotect(0x7f7a1a366000, 2093056, PROT_NONE) = 0
mmap(0x7f7a1a565000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x18b5000) = 0x7f7a1a565000
close(3)                                = 0
access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory)
open("/usr/lib/x86_64-linux-gnu/libstdc++.so.6", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\3\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0 \235\10\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0644, st_size=1566440, ...}) = 0
mmap(NULL, 3675136, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f7a18720000
mprotect(0x7f7a18892000, 2097152, PROT_NONE) = 0
mmap(0x7f7a18a92000, 49152, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x172000) = 0x7f7a18a92000
mmap(0x7f7a18a9e000, 13312, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f7a18a9e000
close(3)                                = 0
access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory)
open("/lib/x86_64-linux-gnu/libgcc_s.so.1", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0p\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0644, st_size=89696, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7a1e840000
mmap(NULL, 2185488, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f7a18500000
mprotect(0x7f7a18516000, 2093056, PROT_NONE) = 0
mmap(0x7f7a18715000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x15000) = 0x7f7a18715000
close(3)                                = 0
access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory)
open("/lib/x86_64-linux-gnu/libgpg-error.so.0", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\320(\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0644, st_size=80496, ...}) = 0
mmap(NULL, 2175544, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f7a182e0000
mprotect(0x7f7a182f2000, 2097152, PROT_NONE) = 0
mmap(0x7f7a184f2000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x12000) = 0x7f7a184f2000
close(3)                                = 0
access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory)
open("/lib/x86_64-linux-gnu/libexpat.so.1", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\0;\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0644, st_size=166032, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7a1e830000
mmap(NULL, 2261096, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f7a180b0000
mprotect(0x7f7a180d6000, 2097152, PROT_NONE) = 0
mmap(0x7f7a182d6000, 12288, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x26000) = 0x7f7a182d6000
close(3)                                = 0
access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory)
open("/usr/lib/x86_64-linux-gnu/libX11.so.6", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0p\210\1\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0644, st_size=1285552, ...}) = 0
mmap(NULL, 3382584, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f7a17d70000
mprotect(0x7f7a17ea5000, 2097152, PROT_NONE) = 0
mmap(0x7f7a180a5000, 20480, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x135000) = 0x7f7a180a5000
close(3)                                = 0
access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory)
open("/usr/lib/x86_64-linux-gnu/libjbig.so.0", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0P\21\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0644, st_size=58256, ...}) = 0
mmap(NULL, 2153416, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f7a17b60000
mprotect(0x7f7a17b6b000, 2093056, PROT_NONE) = 0
mmap(0x7f7a17d6a000, 16384, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0xa000) = 0x7f7a17d6a000
close(3)                                = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7a1e820000
access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory)
open("/usr/lib/x86_64-linux-gnu/libxcb.so.1", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\260\226\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0644, st_size=137728, ...}) = 0
mmap(NULL, 2233000, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f7a17930000
mprotect(0x7f7a17951000, 2093056, PROT_NONE) = 0
mmap(0x7f7a17b50000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x20000) = 0x7f7a17b50000
close(3)                                = 0
access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory)
open("/usr/lib/x86_64-linux-gnu/libXau.so.6", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0P\16\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0644, st_size=14456, ...}) = 0
mmap(NULL, 2109720, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f7a17720000
mprotect(0x7f7a17722000, 2097152, PROT_NONE) = 0
mmap(0x7f7a17922000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x2000) = 0x7f7a17922000
close(3)                                = 0
access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory)
open("/usr/lib/x86_64-linux-gnu/libXdmcp.so.6", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\320\21\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0644, st_size=22640, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7a1e810000
mmap(NULL, 2117784, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f7a17510000
mprotect(0x7f7a17515000, 2093056, PROT_NONE) = 0
mmap(0x7f7a17714000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x4000) = 0x7f7a17714000
close(3)                                = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7a1e800000
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7a1e7f0000
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7a1e7e0000
mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7a1e7d0000
arch_prctl(ARCH_SET_FS, 0x7f7a1e7d0740) = 0
mprotect(0x7f7a1c75f000, 16384, PROT_READ) = 0
mprotect(0x7f7a17714000, 4096, PROT_READ) = 0
mprotect(0x7f7a17922000, 4096, PROT_READ) = 0
mprotect(0x7f7a17b50000, 4096, PROT_READ) = 0
mprotect(0x7f7a17d6a000, 4096, PROT_READ) = 0
mprotect(0x7f7a1e5f2000, 4096, PROT_READ) = 0
mprotect(0x7f7a180a5000, 4096, PROT_READ) = 0
mprotect(0x7f7a182d6000, 8192, PROT_READ) = 0
mprotect(0x7f7a184f2000, 4096, PROT_READ) = 0
mprotect(0x7f7a1bdc7000, 4096, PROT_READ) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7a1e7c0000
mprotect(0x7f7a18a92000, 40960, PROT_READ) = 0
mprotect(0x7f7a1a565000, 4096, PROT_READ) = 0
mprotect(0x7f7a1d658000, 4096, PROT_READ) = 0
mprotect(0x7f7a1bff0000, 4096, PROT_READ) = 0
mprotect(0x7f7a1b7c7000, 4096, PROT_READ) = 0
mprotect(0x7f7a1a7e0000, 4096, PROT_READ) = 0
mprotect(0x7f7a1e3e7000, 4096, PROT_READ) = 0
mprotect(0x7f7a1ac0e000, 8192, PROT_READ) = 0
mprotect(0x7f7a1ae30000, 4096, PROT_READ) = 0
mprotect(0x7f7a1b563000, 4096, PROT_READ) = 0
mprotect(0x7f7a1b333000, 24576, PROT_READ) = 0
mprotect(0x7f7a1b07c000, 8192, PROT_READ) = 0
mprotect(0x7f7a1baa7000, 4096, PROT_READ) = 0
mprotect(0x7f7a1c37f000, 65536, PROT_READ) = 0
mprotect(0x7f7a1c99e000, 4096, PROT_READ) = 0
mprotect(0x7f7a1cbf2000, 24576, PROT_READ) = 0
mprotect(0x7f7a1d42f000, 32768, PROT_READ) = 0
mprotect(0x7f7a1d07b000, 4096, PROT_READ) = 0
mprotect(0x7f7a1ce33000, 4096, PROT_READ) = 0
mprotect(0x7f7a1da79000, 114688, PROT_READ) = 0
mprotect(0x7f7a1dd0e000, 16384, PROT_READ) = 0
mprotect(0x7f7a1df8e000, 4096, PROT_READ) = 0
mprotect(0x7f7a1e198000, 4096, PROT_READ) = 0
mprotect(0x7f7a1ed0e000, 8192, PROT_READ) = 0
mprotect(0x7f7a1e825000, 4096, PROT_READ) = 0
munmap(0x7f7a1e8ca000, 21493)           = 0
set_tid_address(0x7f7a1e7d0a10)         = 14
set_robust_list(0x7f7a1e7d0a20, 24)     = 0
rt_sigaction(SIGRTMIN, {0x7f7a1e1d5b50, [], SA_RESTORER|SA_SIGINFO, 0x7f7a1e1e1390}, NULL, 8) = 0
rt_sigaction(SIGRT_1, {0x7f7a1e1d5be0, [], SA_RESTORER|SA_RESTART|SA_SIGINFO, 0x7f7a1e1e1390}, NULL, 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
getrlimit(RLIMIT_STACK, {rlim_cur=81921024, rlim_max=81921024}) = 0
brk(NULL)                               = 0x7fffbb5dc000
brk(0x7fffbb5fd000)                     = 0x7fffbb5fd000
gettimeofday({1491278990, 661032}, NULL) = 0
open("/etc/localtime", O_RDONLY|O_CLOEXEC) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=127, ...}) = 0
fstat(3, {st_mode=S_IFREG|0644, st_size=127, ...}) = 0
read(3, "TZif2\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\1\0\0\0\1\0\0\0\0"..., 512) = 127
lseek(3, -67, SEEK_CUR)                 = 60
read(3, "TZif2\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\1\0\0\0\1\0\0\0\0"..., 512) = 67
close(3)                                = 0
open("/var/log/nginx/error.log", O_WRONLY|O_CREAT|O_APPEND, 0644) = 3
open("/usr/lib/ssl/openssl.cnf", O_RDONLY) = 4
fstat(4, {st_mode=S_IFREG|0644, st_size=10835, ...}) = 0
read(4, "#\n# OpenSSL example configuratio"..., 512) = 512
read(4, "a configuration file that has on"..., 512) = 512
read(4, "efault ca section\n\n#############"..., 512) = 512
read(4, "ertificate\nserial\t\t= $dir/serial"..., 512) = 512
read(4, "tions\ncert_opt \t= ca_default\t\t# "..., 512) = 512
read(4, "\t# keep passed DN ordering\n\n# A "..., 512) = 512
read(4, " 'object'\n# types.\n[ policy_anyt"..., 512) = 512
read(4, "ords for private keys if not pre"..., 512) = 512
read(4, "Netscape crash on BMPStrings or "..., 512) = 512
read(4, "= Internet Widgits Pty Ltd\n\n# we"..., 512) = 512
read(4, "challenge password\nchallengePass"..., 512) = 512
read(4, " OK for an SSL server.\n# nsCertT"..., 512) = 512
read(4, "X recommendations harmless if in"..., 512) = 512
read(4, "nsSslServerName\n\n# This is requi"..., 512) = 512
read(4, "ue\n# So we do this instead.\nbasi"..., 512) = 512
read(4, "xperts only!\n# obj=DER:02:03\n# W"..., 512) = 512
read(4, " this to avoid interpreting an e"..., 512) = 512
read(4, "objsign\n\n# This is typical in ke"..., 512) = 512
read(4, "hat aren't\n# deprecated accordin"..., 512) = 512
read(4, "t TSA section\n\n[ tsa_config1 ]\n\n"..., 512) = 512
read(4, " Policy if request did not speci"..., 512) = 512
read(4, "chain\t= no\t# Must the ESS cert i"..., 512) = 83
read(4, "", 512)                        = 0
close(4)                                = 0
brk(0x7fffbb61e000)                     = 0x7fffbb61e000
uname({sysname="Linux", nodename="DESKTOP-J9ETONP", ...}) = 0
time(NULL)                              =<PHONE_NUMBER>
open("/sys/devices/system/cpu/online", O_RDONLY|O_CLOEXEC) = 4
read(4, "0-7\n", 8192)                  = 4
close(4)                                = 0
getrlimit(RLIMIT_NOFILE, {rlim_cur=21024, rlim_max=21024}) = 0
time(NULL)                              =<PHONE_NUMBER>
stat("/etc/localtime", {st_mode=S_IFREG|0644, st_size=127, ...}) = 0
gettimeofday({1491278990, 693198}, NULL) = 0
uname({sysname="Linux", nodename="DESKTOP-J9ETONP", ...}) = 0
open("/etc/nginx/nginx.conf", O_RDONLY) = 4
fstat(4, {st_mode=S_IFREG|0644, st_size=1462, ...}) = 0
pread64(4, "user www-data;\nworker_processes "..., 1462, 0) = 1462
geteuid()                               = 0
socket(PF_LOCAL, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0) = 5
connect(5, {sa_family=AF_LOCAL, sun_path="/var/run/nscd/socket"}, 110) = -1 ENOENT (No such file or directory)
close(5)                                = 0
socket(PF_LOCAL, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0) = 5
connect(5, {sa_family=AF_LOCAL, sun_path="/var/run/nscd/socket"}, 110) = -1 ENOENT (No such file or directory)
close(5)                                = 0
open("/etc/nsswitch.conf", O_RDONLY|O_CLOEXEC) = 5
fstat(5, {st_mode=S_IFREG|0644, st_size=497, ...}) = 0
read(5, "# /etc/nsswitch.conf\n#\n# Example"..., 512) = 497
read(5, "", 512)                        = 0
close(5)                                = 0
open("/etc/ld.so.cache", O_RDONLY|O_CLOEXEC) = 5
fstat(5, {st_mode=S_IFREG|0644, st_size=21493, ...}) = 0
mmap(NULL, 21493, PROT_READ, MAP_PRIVATE, 5, 0) = 0x7f7a1e8ca000
close(5)                                = 0
access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory)
open("/lib/x86_64-linux-gnu/libnss_compat.so.2", O_RDONLY|O_CLOEXEC) = 5
read(5, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\320\22\0\0\0\0\0\0"..., 832) = 832
fstat(5, {st_mode=S_IFREG|0644, st_size=35688, ...}) = 0
mmap(NULL, 2131040, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 5, 0) = 0x7f7a17300000
mprotect(0x7f7a17308000, 2093056, PROT_NONE) = 0
mmap(0x7f7a17507000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 5, 0x7000) = 0x7f7a17507000
close(5)                                = 0
access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory)
open("/lib/x86_64-linux-gnu/libnsl.so.1", O_RDONLY|O_CLOEXEC) = 5
read(5, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\360?\0\0\0\0\0\0"..., 832) = 832
fstat(5, {st_mode=S_IFREG|0644, st_size=93128, ...}) = 0
mmap(NULL, 2198104, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 5, 0) = 0x7f7a170e0000
mprotect(0x7f7a170f6000, 2093056, PROT_NONE) = 0
mmap(0x7f7a172f5000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 5, 0x15000) = 0x7f7a172f5000
mmap(0x7f7a172f7000, 6744, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f7a172f7000
close(5)                                = 0
mprotect(0x7f7a172f5000, 4096, PROT_READ) = 0
mprotect(0x7f7a17507000, 4096, PROT_READ) = 0
munmap(0x7f7a1e8ca000, 21493)           = 0
open("/etc/ld.so.cache", O_RDONLY|O_CLOEXEC) = 5
fstat(5, {st_mode=S_IFREG|0644, st_size=21493, ...}) = 0
mmap(NULL, 21493, PROT_READ, MAP_PRIVATE, 5, 0) = 0x7f7a1e8ca000
close(5)                                = 0
access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory)
open("/lib/x86_64-linux-gnu/libnss_nis.so.2", O_RDONLY|O_CLOEXEC) = 5
read(5, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\260 \0\0\0\0\0\0"..., 832) = 832
fstat(5, {st_mode=S_IFREG|0644, st_size=47648, ...}) = 0
mmap(NULL, 2143624, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 5, 0) = 0x7f7a16ed0000
mprotect(0x7f7a16edb000, 2093056, PROT_NONE) = 0
mmap(0x7f7a170da000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 5, 0xa000) = 0x7f7a170da000
close(5)                                = 0
access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory)
open("/lib/x86_64-linux-gnu/libnss_files.so.2", O_RDONLY|O_CLOEXEC) = 5
read(5, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\260!\0\0\0\0\0\0"..., 832) = 832
fstat(5, {st_mode=S_IFREG|0644, st_size=47600, ...}) = 0
mmap(NULL, 2168600, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 5, 0) = 0x7f7a16cb0000
mprotect(0x7f7a16cbb000, 2093056, PROT_NONE) = 0
mmap(0x7f7a16eba000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 5, 0xa000) = 0x7f7a16eba000
mmap(0x7f7a16ebc000, 22296, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f7a16ebc000
close(5)                                = 0
mprotect(0x7f7a16eba000, 4096, PROT_READ) = 0
mprotect(0x7f7a170da000, 4096, PROT_READ) = 0
munmap(0x7f7a1e8ca000, 21493)           = 0
open("/etc/passwd", O_RDONLY|O_CLOEXEC) = 5
lseek(5, 0, SEEK_CUR)                   = 0
fstat(5, {st_mode=S_IFREG|0644, st_size=1566, ...}) = 0
mmap(NULL, 1566, PROT_READ, MAP_SHARED, 5, 0) = 0x7f7a1e8cf000
lseek(5, 1566, SEEK_SET)                = 1566
munmap(0x7f7a1e8cf000, 1566)            = 0
close(5)                                = 0
socket(PF_LOCAL, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0) = 5
connect(5, {sa_family=AF_LOCAL, sun_path="/var/run/nscd/socket"}, 110) = -1 ENOENT (No such file or directory)
close(5)                                = 0
socket(PF_LOCAL, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0) = 5
connect(5, {sa_family=AF_LOCAL, sun_path="/var/run/nscd/socket"}, 110) = -1 ENOENT (No such file or directory)
close(5)                                = 0
open("/etc/group", O_RDONLY|O_CLOEXEC)  = 5
lseek(5, 0, SEEK_CUR)                   = 0
fstat(5, {st_mode=S_IFREG|0644, st_size=707, ...}) = 0
mmap(NULL, 707, PROT_READ, MAP_SHARED, 5, 0) = 0x7f7a1e8cf000
lseek(5, 707, SEEK_SET)                 = 707
munmap(0x7f7a1e8cf000, 707)             = 0
close(5)                                = 0
epoll_create(100)                       = 5
close(5)                                = 0
brk(0x7fffbb63f000)                     = 0x7fffbb63f000
time(NULL)                              =<PHONE_NUMBER>
futex(0x7f7a1d4396a8, FUTEX_WAKE_PRIVATE,<PHONE_NUMBER>) = 0
open("/etc/nginx/mime.types", O_RDONLY) = 5
fstat(5, {st_mode=S_IFREG|0644, st_size=3957, ...}) = 0
pread64(5, "\ntypes {\n    text/html          "..., 3957, 0) = 3957
close(5)                                = 0
open("/etc/nginx/conf.d", O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC) = 5
fstat(5, {st_mode=S_IFDIR|0755, st_size=512, ...}) = 0
getdents(5, /* d_reclen < sizeof(struct dirent) // 1 entries /, 32768) = 43
getdents(5, / 0 entries /, 32768)     = 0
close(5)                                = 0
open("/etc/nginx/sites-enabled", O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC) = 5
fstat(5, {st_mode=S_IFDIR|0755, st_size=512, ...}) = 0
getdents(5, / d_reclen < sizeof(struct dirent) // 1 entries /, 32768) = 70
newfstatat(5, "default", {st_mode=S_IFREG|0644, st_size=2074, ...}, 0) = 0
getdents(5, / 0 entries /, 32768)     = 0
close(5)                                = 0
open("/etc/nginx/sites-enabled/default", O_RDONLY) = 5
fstat(5, {st_mode=S_IFREG|0644, st_size=2074, ...}) = 0
pread64(5, "##\n# You should look at the foll"..., 2074, 0) = 2074
close(5)                                = 0
close(4)                                = 0
mkdir("/var/lib/nginx/body", 0700)      = -1 EEXIST (File exists)
stat("/var/lib/nginx/body", {st_mode=S_IFDIR|0700, st_size=512, ...}) = 0
mkdir("/var/lib/nginx/proxy", 0700)     = -1 EEXIST (File exists)
stat("/var/lib/nginx/proxy", {st_mode=S_IFDIR|0700, st_size=512, ...}) = 0
mkdir("/var/lib/nginx/fastcgi", 0700)   = -1 EEXIST (File exists)
stat("/var/lib/nginx/fastcgi", {st_mode=S_IFDIR|0700, st_size=512, ...}) = 0
mkdir("/var/lib/nginx/uwsgi", 0700)     = -1 EEXIST (File exists)
stat("/var/lib/nginx/uwsgi", {st_mode=S_IFDIR|0700, st_size=512, ...}) = 0
mkdir("/var/lib/nginx/scgi", 0700)      = -1 EEXIST (File exists)
stat("/var/lib/nginx/scgi", {st_mode=S_IFDIR|0700, st_size=512, ...}) = 0
open("/var/log/nginx/access.log", O_WRONLY|O_CREAT|O_APPEND, 0644) = 4
fcntl(4, F_SETFD, FD_CLOEXEC)           = 0
open("/var/log/nginx/error.log", O_WRONLY|O_CREAT|O_APPEND, 0644) = 5
fcntl(5, F_SETFD, FD_CLOEXEC)           = 0
socket(PF_INET, SOCK_STREAM, IPPROTO_IP) = 6
setsockopt(6, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0
ioctl(6, FIONBIO, [1])                  = 0
bind(6, {sa_family=AF_INET, sin_port=htons(80), sin_addr=inet_addr("<IP_ADDRESS>")}, 16) = 0
listen(6, 511)                          = 0
socket(PF_INET6, SOCK_STREAM, IPPROTO_IP) = 7
setsockopt(7, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0
setsockopt(7, SOL_IPV6, IPV6_V6ONLY, [1], 4) = 0
ioctl(7, FIONBIO, [1])                  = 0
bind(7, {sa_family=AF_INET6, sin6_port=htons(80), inet_pton(AF_INET6, "::", &sin6_addr), sin6_flowinfo=0, sin6_scope_id=0}, 28) = 0
listen(7, 511)                          = 0
listen(6, 511)                          = 0
listen(7, 511)                          = 0
getrlimit(RLIMIT_NOFILE, {rlim_cur=21024, rlim_max=2*1024}) = 0
mmap(NULL, 1280, PROT_READ|PROT_WRITE, MAP_SHARED|MAP_ANONYMOUS, -1, 0) = 0x7f7a1e8cf000
rt_sigaction(SIGHUP, {0x7f7a1ea49eb0, [], SA_RESTORER, 0x7f7a1e1e1390}, NULL, 8) = 0
rt_sigaction(SIGUSR1, {0x7f7a1ea49eb0, [], SA_RESTORER, 0x7f7a1e1e1390}, NULL, 8) = 0
rt_sigaction(SIGWINCH, {0x7f7a1ea49eb0, [], SA_RESTORER, 0x7f7a1e1e1390}, NULL, 8) = 0
rt_sigaction(SIGTERM, {0x7f7a1ea49eb0, [], SA_RESTORER, 0x7f7a1e1e1390}, NULL, 8) = 0
rt_sigaction(SIGQUIT, {0x7f7a1ea49eb0, [], SA_RESTORER, 0x7f7a1e1e1390}, NULL, 8) = 0
rt_sigaction(SIGUSR2, {0x7f7a1ea49eb0, [], SA_RESTORER, 0x7f7a1e1e1390}, NULL, 8) = 0
rt_sigaction(SIGALRM, {0x7f7a1ea49eb0, [], SA_RESTORER, 0x7f7a1e1e1390}, NULL, 8) = 0
rt_sigaction(SIGINT, {0x7f7a1ea49eb0, [], SA_RESTORER, 0x7f7a1e1e1390}, NULL, 8) = 0
rt_sigaction(SIGIO, {0x7f7a1ea49eb0, [], SA_RESTORER, 0x7f7a1e1e1390}, NULL, 8) = 0
rt_sigaction(SIGCHLD, {0x7f7a1ea49eb0, [], SA_RESTORER, 0x7f7a1e1e1390}, NULL, 8) = 0
rt_sigaction(SIGSYS, {SIG_IGN, [], SA_RESTORER, 0x7f7a1e1e1390}, NULL, 8) = 0
rt_sigaction(SIGPIPE, {SIG_IGN, [], SA_RESTORER, 0x7f7a1e1e1390}, NULL, 8) = 0
open("/run/nginx.pid", O_RDWR|O_CREAT|O_TRUNC, 0644) = 8
pwrite64(8, "14\n", 3, 0)               = 3
close(8)                                = 0
dup2(5, 2)                              = 2
close(3)                                = 0
rt_sigprocmask(SIG_BLOCK, [HUP INT QUIT USR1 USR2 ALRM TERM CHLD WINCH IO], NULL, 8) = 0
socketpair(PF_LOCAL, SOCK_STREAM, 0, [3, 8]) = 0
ioctl(3, FIONBIO, [1])                  = 0
ioctl(8, FIONBIO, [1])                  = 0
ioctl(3, FIOASYNC, [1])                 = 0
fcntl(3, F_SETOWN, 14)                  = 0
fcntl(3, F_SETFD, FD_CLOEXEC)           = 0
fcntl(8, F_SETFD, FD_CLOEXEC)           = 0
clone(strace: Process 15 attached
child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x7f7a1e7d0a10) = 15
[pid    15] set_robust_list(0x7f7a1e7d0a20, 24 <unfinished ...>
[pid    14] socketpair(PF_LOCAL, SOCK_STREAM, 0 <unfinished ...>
[pid    15] <... set_robust_list resumed> ) = 0
[pid    14] <... socketpair resumed> , [9, 10]) = 0
[pid    14] ioctl(9, FIONBIO, [1] <unfinished ...>
[pid    15] geteuid( <unfinished ...>
[pid    14] <... ioctl resumed> )       = 0
[pid    14] ioctl(10, FIONBIO, [1] <unfinished ...>
[pid    15] <... geteuid resumed> )     = 0
[pid    14] <... ioctl resumed> )       = 0
[pid    15] setgid(33 <unfinished ...>
[pid    14] ioctl(9, FIOASYNC, [1])     = 0
[pid    14] fcntl(9, F_SETOWN, 14 <unfinished ...>
[pid    15] <... setgid resumed> )      = 0
[pid    14] <... fcntl resumed> )       = 0
[pid    15] open("/proc/sys/kernel/ngroups_max", O_RDONLY <unfinished ...>
[pid    14] fcntl(9, F_SETFD, FD_CLOEXEC) = 0
[pid    15] <... open resumed> )        = 9
[pid    14] fcntl(10, F_SETFD, FD_CLOEXEC) = 0
[pid    15] read(9,  <unfinished ...>
[pid    14] clone( <unfinished ...>
[pid    15] <... read resumed> "65536\n", 31) = 6
[pid    15] close(9)                    = 0
[pid    15] open("/etc/group", O_RDONLY|O_CLOEXEC) = 9
[pid    15] lseek(9, 0, SEEK_CUR)       = 0
[pid    15] fstat(9, {st_mode=S_IFREG|0644, st_size=707, ...}) = 0
[pid    15] mmap(NULL, 707, PROT_READ, MAP_SHARED, 9, 0) = 0x7f7a1e8ce000
[pid    15] lseek(9, 707, SEEK_SET)     = 707
[pid    15] fstat(9, {st_mode=S_IFREG|0644, st_size=707, ...}) = 0
[pid    15] munmap(0x7f7a1e8ce000, 707) = 0
[pid    15] close(9)                    = 0
[pid    15] setgroups(1, [33])          = 0
[pid    15] setuid(33)                  = 0
[pid    15] prctl(PR_SET_DUMPABLE, 1 <unfinished ...>
[pid    14] <... clone resumed> child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x7f7a1e7d0a10) = 16
[pid    15] <... prctl resumed> )       = 0
[pid    14] sendmsg(3, {msg_name(0)=NULL, msg_iov(1)=[{"\1\0\0\0\0\0\0\0\20\0\0\0\0\0\0\0\1\0\0\0\0\0\0\0\t\0\0\0\0\0\0\0", 32}], msg_controllen=24, [{cmsg_len=20, cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, [9]}], msg_flags=0}, 0 <unfinished ...>
[pid    15] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid    14] <... sendmsg resumed> )     = 32
[pid    15] <... rt_sigprocmask resumed> NULL, 8) = 0
[pid    14] socketpair(PF_LOCAL, SOCK_STREAM, 0 <unfinished ...>
[pid    15] epoll_create(384 <unfinished ...>
[pid    14] <... socketpair resumed> , [11, 12]) = 0
[pid    15] <... epoll_create resumed> ) = 9
[pid    14] ioctl(11, FIONBIO, [1])     = 0
[pid    15] eventfd2(0, 0 <unfinished ...>
[pid    14] ioctl(12, FIONBIO, [1] <unfinished ...>
[pid    15] <... eventfd2 resumed> )    = 10
[pid    14] <... ioctl resumed> )       = 0
[pid    15] epoll_ctl(9, EPOLL_CTL_ADD, 10, {EPOLLIN|EPOLLET, {u32=517204640, u64=140162479942304}} <unfinished ...>
[pid    14] ioctl(11, FIOASYNC, [1] <unfinished ...>
[pid    15] <... epoll_ctl resumed> )   = 0
[pid    14] <... ioctl resumed> )       = 0
[pid    14] fcntl(11, F_SETOWN, 14 <unfinished ...>
[pid    15] mmap(NULL, 180224, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 <unfinished ...>
[pid    14] <... fcntl resumed> )       = 0
[pid    15] <... mmap resumed> )        = 0x7f7a1e790000
[pid    14] fcntl(11, F_SETFD, FD_CLOEXEC <unfinished ...>
[pid    15] brk(0x7fffbb66e000 <unfinished ...>
[pid    14] <... fcntl resumed> )       = 0
[pid    15] <... brk resumed> )         = 0x7fffbb66e000
[pid    14] fcntl(12, F_SETFD, FD_CLOEXEC <unfinished ...>
[pid    15] gettimeofday( <unfinished ...>
[pid    14] <... fcntl resumed> )       = 0
[pid    15] <... gettimeofday resumed> {1491278990, 895294}, NULL) = 0
[pid    14] clone( <unfinished ...>
[pid    15] close(3strace: Process 16 attached
)                    = 0
[pid    16] set_robust_list(0x7f7a1e7d0a20, 24 <unfinished ...>
[pid    15] epoll_ctl(9, EPOLL_CTL_ADD, 8, {EPOLLIN|EPOLLRDHUP, {u32=511246816, u64=140162473984480}} <unfinished ...>
[pid    16] <... set_robust_list resumed> ) = 0
[pid    15] <... epoll_ctl resumed> )   = 0
[pid    16] geteuid( <unfinished ...>
[pid    15] epoll_ctl(9, EPOLL_CTL_ADD, 6, {EPOLLIN|EPOLLRDHUP, {u32=511246352, u64=140162473984016}} <unfinished ...>
[pid    16] <... geteuid resumed> )     = 0
[pid    15] <... epoll_ctl resumed> )   = 0
[pid    16] setgid(33 <unfinished ...>
[pid    15] epoll_ctl(9, EPOLL_CTL_ADD, 7, {EPOLLIN|EPOLLRDHUP, {u32=511246584, u64=140162473984248}} <unfinished ...>
[pid    16] <... setgid resumed> )      = 0
[pid    15] <... epoll_ctl resumed> )   = 0
[pid    14] <... clone resumed> child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x7f7a1e7d0a10) = 17
[pid    15] epoll_wait(9,  <unfinished ...>
[pid    14] sendmsg(3, {msg_name(0)=NULL, msg_iov(1)=[{"\1\0\0\0\0\0\0\0\21\0\0\0\0\0\0\0\2\0\0\0\0\0\0\0\v\0\0\0\0\0\0\0", 32}], msg_controllen=24, [{cmsg_len=20, cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, [11]}], msg_flags=0}, 0 <unfinished ...>
[pid    15] <... epoll_wait resumed> [{EPOLLIN, {u32=511246816, u64=140162473984480}}], 512, -1) = 1
[pid    14] <... sendmsg resumed> )     = 32
[pid    15] gettimeofday( <unfinished ...>
[pid    14] sendmsg(9, {msg_name(0)=NULL, msg_iov(1)=[{"\1\0\0\0\0\0\0\0\21\0\0\0\0\0\0\0\2\0\0\0\0\0\0\0\v\0\0\0\0\0\0\0", 32}], msg_controllen=24, [{cmsg_len=20, cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, [11]}], msg_flags=0}, 0 <unfinished ...>
[pid    15] <... gettimeofday resumed> {1491278990, 914020}, NULL) = 0
[pid    14] <... sendmsg resumed> )     = 32
[pid    15] recvmsg(8,  <unfinished ...>
[pid    14] socketpair(PF_LOCAL, SOCK_STREAM, 0 <unfinished ...>
[pid    15] <... recvmsg resumed> {msg_name(0)=NULL, msg_iov(1)=[{"\1\0\0\0\0\0\0\0\20\0\0\0\0\0\0\0\1\0\0\0\0\0\0\0\t\0\0\0\0\0\0\0", 32}], msg_controllen=24, [{cmsg_len=20, cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, [3]}], msg_flags=0}, 0) = 32
[pid    14] <... socketpair resumed> , [13, 14]) = 0
[pid    15] recvmsg(8,  <unfinished ...>
[pid    14] ioctl(13, FIONBIO, [1] <unfinished ...>
[pid    15] <... recvmsg resumed> {msg_name(0)=NULL, msg_iov(1)=[{"\1\0\0\0\0\0\0\0\21\0\0\0\0\0\0\0\2\0\0\0\0\0\0\0\v\0\0\0\0\0\0\0", 32}], msg_controllen=24, [{cmsg_len=20, cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, [11]}], msg_flags=0}, 0) = 32
[pid    14] <... ioctl resumed> )       = 0
[pid    15] recvmsg(8,  <unfinished ...>
[pid    14] ioctl(14, FIONBIO, [1] <unfinished ...>
[pid    15] <... recvmsg resumed> 0x7fffc23c5120, 0) = -1 EAGAIN (Resource temporarily unavailable)
[pid    14] <... ioctl resumed> )       = 0
[pid    14] ioctl(13, FIOASYNC, [1] <unfinished ...>
[pid    15] epoll_wait(9,  <unfinished ...>
[pid    14] <... ioctl resumed> )       = 0
[pid    14] fcntl(13, F_SETOWN, 14 <unfinished ...>
[pid    16] open("/proc/sys/kernel/ngroups_max", O_RDONLY <unfinished ...>
[pid    14] <... fcntl resumed> )       = 0
[pid    16] <... open resumed> )        = 11
[pid    14] fcntl(13, F_SETFD, FD_CLOEXEC <unfinished ...>
[pid    16] read(11,  <unfinished ...>
[pid    14] <... fcntl resumed> )       = 0
[pid    14] fcntl(14, F_SETFD, FD_CLOEXEC <unfinished ...>
[pid    16] <... read resumed> "65536\n", 31) = 6
[pid    14] <... fcntl resumed> )       = 0
[pid    14] clone( <unfinished ...>
[pid    16] close(11strace: Process 17 attached
)                   = 0
[pid    17] set_robust_list(0x7f7a1e7d0a20, 24 <unfinished ...>
[pid    16] open("/etc/group", O_RDONLY|O_CLOEXEC <unfinished ...>
[pid    17] <... set_robust_list resumed> ) = 0
[pid    16] <... open resumed> )        = 11
[pid    17] geteuid( <unfinished ...>
[pid    16] lseek(11, 0, SEEK_CUR <unfinished ...>
[pid    17] <... geteuid resumed> )     = 0
[pid    16] <... lseek resumed> )       = 0
[pid    17] setgid(33 <unfinished ...>
[pid    16] fstat(11, {st_mode=S_IFREG|0644, st_size=707, ...}) = 0
[pid    14] <... clone resumed> child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x7f7a1e7d0a10) = 18
[pid    16] mmap(NULL, 707, PROT_READ, MAP_SHARED, 11, 0 <unfinished ...>
[pid    14] sendmsg(3, {msg_name(0)=NULL, msg_iov(1)=[{"\1\0\0\0\0\0\0\0\22\0\0\0\0\0\0\0\3\0\0\0\0\0\0\0\r\0\0\0\0\0\0\0", 32}], msg_controllen=24, [{cmsg_len=20, cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, [13]}], msg_flags=0}, 0 <unfinished ...>
[pid    16] <... mmap resumed> )        = 0x7f7a1e8ce000
[pid    14] <... sendmsg resumed> )     = 32
[pid    15] <... epoll_wait resumed> [{EPOLLIN, {u32=511246816, u64=140162473984480}}], 512, -1) = 1
[pid    14] sendmsg(9, {msg_name(0)=NULL, msg_iov(1)=[{"\1\0\0\0\0\0\0\0\22\0\0\0\0\0\0\0\3\0\0\0\0\0\0\0\r\0\0\0\0\0\0\0", 32}], msg_controllen=24, [{cmsg_len=20, cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, [13]}], msg_flags=0}, 0 <unfinished ...>
[pid    15] gettimeofday( <unfinished ...>
[pid    14] <... sendmsg resumed> )     = 32
[pid    15] <... gettimeofday resumed> {1491278990, 954528}, NULL) = 0
[pid    14] sendmsg(11, {msg_name(0)=NULL, msg_iov(1)=[{"\1\0\0\0\0\0\0\0\22\0\0\0\0\0\0\0\3\0\0\0\0\0\0\0\r\0\0\0\0\0\0\0", 32}], msg_controllen=24, [{cmsg_len=20, cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, [13]}], msg_flags=0}, 0 <unfinished ...>
[pid    15] recvmsg(8,  <unfinished ...>
[pid    14] <... sendmsg resumed> )     = 32
[pid    15] <... recvmsg resumed> {msg_name(0)=NULL, msg_iov(1)=[{"\1\0\0\0\0\0\0\0\22\0\0\0\0\0\0\0\3\0\0\0\0\0\0\0\r\0\0\0\0\0\0\0", 32}], msg_controllen=24, [{cmsg_len=20, cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, [12]}], msg_flags=0}, 0) = 32
[pid    14] socketpair(PF_LOCAL, SOCK_STREAM, 0 <unfinished ...>
[pid    15] recvmsg(8,  <unfinished ...>
[pid    14] <... socketpair resumed> , [15, 16]) = 0
[pid    15] <... recvmsg resumed> 0x7fffc23c5120, 0) = -1 EAGAIN (Resource temporarily unavailable)
[pid    14] ioctl(15, FIONBIO, [1] <unfinished ...>
[pid    15] epoll_wait(9,  <unfinished ...>
[pid    14] <... ioctl resumed> )       = 0
[pid    14] ioctl(16, FIONBIO, [1] <unfinished ...>
[pid    16] lseek(11, 707, SEEK_SET <unfinished ...>
[pid    14] <... ioctl resumed> )       = 0
[pid    16] <... lseek resumed> )       = 707
[pid    14] ioctl(15, FIOASYNC, [1])    = 0
[pid    16] fstat(11,  <unfinished ...>
[pid    14] fcntl(15, F_SETOWN, 14 <unfinished ...>
[pid    16] <... fstat resumed> {st_mode=S_IFREG|0644, st_size=707, ...}) = 0
[pid    14] <... fcntl resumed> )       = 0
[pid    16] munmap(0x7f7a1e8ce000, 707 <unfinished ...>
[pid    14] fcntl(15, F_SETFD, FD_CLOEXEC) = 0
[pid    14] fcntl(16, F_SETFD, FD_CLOEXEC) = 0
[pid    16] <... munmap resumed> )      = 0
[pid    14] clone( <unfinished ...>
[pid    16] close(11 <unfinished ...>
[pid    17] <... setgid resumed> )      = 0
[pid    16] <... close resumed> )       = 0
[pid    17] open("/proc/sys/kernel/ngroups_max", O_RDONLY <unfinished ...>
[pid    16] setgroups(1, [33] <unfinished ...>
[pid    17] <... open resumed> )        = 13
[pid    16] <... setgroups resumed> )   = 0
[pid    17] read(13,  <unfinished ...>
[pid    16] setuid(33)                  = 0
[pid    17] <... read resumed> "65536\n", 31) = 6
[pid    16] prctl(PR_SET_DUMPABLE, 1 <unfinished ...>
[pid    17] close(13 <unfinished ...>
[pid    16] <... prctl resumed> )       = 0
[pid    16] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid    14] <... clone resumed> child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x7f7a1e7d0a10) = 19
[pid    16] <... rt_sigprocmask resumed> NULL, 8) = 0
[pid    14] sendmsg(3, {msg_name(0)=NULL, msg_iov(1)=[{"\1\0\0\0\0\0\0\0\23\0\0\0\0\0\0\0\4\0\0\0\0\0\0\0\17\0\0\0\0\0\0\0", 32}], msg_controllen=24, [{cmsg_len=20, cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, [15]}], msg_flags=0}, 0 <unfinished ...>
[pid    16] epoll_create(384 <unfinished ...>
[pid    14] <... sendmsg resumed> )     = 32
[pid    15] <... epoll_wait resumed> [{EPOLLIN, {u32=511246816, u64=140162473984480}}], 512, -1) = 1
[pid    14] sendmsg(9, {msg_name(0)=NULL, msg_iov(1)=[{"\1\0\0\0\0\0\0\0\23\0\0\0\0\0\0\0\4\0\0\0\0\0\0\0\17\0\0\0\0\0\0\0", 32}], msg_controllen=24, [{cmsg_len=20, cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, [15]}], msg_flags=0}, 0 <unfinished ...>
[pid    15] gettimeofday( <unfinished ...>
[pid    14] <... sendmsg resumed> )     = 32
[pid    15] <... gettimeofday resumed> {1491278990, 992832}, NULL) = 0
[pid    14] sendmsg(11, {msg_name(0)=NULL, msg_iov(1)=[{"\1\0\0\0\0\0\0\0\23\0\0\0\0\0\0\0\4\0\0\0\0\0\0\0\17\0\0\0\0\0\0\0", 32}], msg_controllen=24, [{cmsg_len=20, cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, [15]}], msg_flags=0}, 0 <unfinished ...>
[pid    15] recvmsg(8,  <unfinished ...>
[pid    14] <... sendmsg resumed> )     = 32
[pid    15] <... recvmsg resumed> {msg_name(0)=NULL, msg_iov(1)=[{"\1\0\0\0\0\0\0\0\23\0\0\0\0\0\0\0\4\0\0\0\0\0\0\0\17\0\0\0\0\0\0\0", 32}], msg_controllen=24, [{cmsg_len=20, cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, [13]}], msg_flags=0}, 0) = 32
[pid    14] sendmsg(13, {msg_name(0)=NULL, msg_iov(1)=[{"\1\0\0\0\0\0\0\0\23\0\0\0\0\0\0\0\4\0\0\0\0\0\0\0\17\0\0\0\0\0\0\0", 32}], msg_controllen=24, [{cmsg_len=20, cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, [15]}], msg_flags=0}, 0 <unfinished ...>
[pid    15] recvmsg(8,  <unfinished ...>
[pid    14] <... sendmsg resumed> )     = 32
[pid    15] <... recvmsg resumed> 0x7fffc23c5120, 0) = -1 EAGAIN (Resource temporarily unavailable)
[pid    14] socketpair(PF_LOCAL, SOCK_STREAM, 0 <unfinished ...>
[pid    15] epoll_wait(9,  <unfinished ...>
[pid    14] <... socketpair resumed> , [17, 18]) = 0
[pid    14] ioctl(17, FIONBIO, [1])     = 0
[pid    16] <... epoll_create resumed> ) = 11
[pid    14] ioctl(18, FIONBIO, [1] <unfinished ...>
[pid    16] eventfd2(0, 0 <unfinished ...>
[pid    14] <... ioctl resumed> )       = 0
[pid    16] <... eventfd2 resumed> )    = 12
[pid    14] ioctl(17, FIOASYNC, [1])    = 0
[pid    16] epoll_ctl(11, EPOLL_CTL_ADD, 12, {EPOLLIN|EPOLLET, {u32=517204640, u64=140162479942304}} <unfinished ...>
[pid    14] fcntl(17, F_SETOWN, 14 <unfinished ...>
[pid    16] <... epoll_ctl resumed> )   = 0
[pid    14] <... fcntl resumed> )       = 0
[pid    16] mmap(NULL, 180224, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 <unfinished ...>
[pid    14] fcntl(17, F_SETFD, FD_CLOEXEC <unfinished ...>
[pid    16] <... mmap resumed> )        = 0x7f7a1e790000
[pid    14] <... fcntl resumed> )       = 0
[pid    16] brk(0x7fffbb66e000 <unfinished ...>
[pid    14] fcntl(18, F_SETFD, FD_CLOEXEC) = 0
[pid    14] clone( <unfinished ...>
[pid    16] <... brk resumed> )         = 0x7fffbb66e000
[pid    17] <... close resumed> )       = 0
[pid    16] gettimeofday({1491278991, 19358}, NULL) = 0
[pid    17] open("/etc/group", O_RDONLY|O_CLOEXEC <unfinished ...>
[pid    16] close(8 <unfinished ...>
[pid    17] <... open resumed> )        = 13
[pid    16] <... close resumed> )       = 0
[pid    16] close(9 <unfinished ...>
[pid    17] lseek(13, 0, SEEK_CUR <unfinished ...>
[pid    16] <... close resumed> )       = 0
[pid    17] <... lseek resumed> )       = 0
[pid    16] epoll_ctl(11, EPOLL_CTL_ADD, 10, {EPOLLIN|EPOLLRDHUP, {u32=511246816, u64=140162473984480}} <unfinished ...>
[pid    17] fstat(13,  <unfinished ...>
[pid    16] <... epoll_ctl resumed> )   = 0
[pid    14] <... clone resumed> child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x7f7a1e7d0a10) = 20
[pid    16] epoll_wait(11,  <unfinished ...>
[pid    14] sendmsg(3, {msg_name(0)=NULL, msg_iov(1)=[{"\1\0\0\0\0\0\0\0\24\0\0\0\0\0\0\0\5\0\0\0\0\0\0\0\21\0\0\0\0\0\0\0", 32}], msg_controllen=24, [{cmsg_len=20, cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, [17]}], msg_flags=0}, 0 <unfinished ...>
[pid    16] <... epoll_wait resumed> [{EPOLLIN, {u32=511246816, u64=140162473984480}}], 512, 500) = 1
[pid    14] <... sendmsg resumed> )     = 32
[pid    15] <... epoll_wait resumed> [{EPOLLIN, {u32=511246816, u64=140162473984480}}], 512, -1) = 1
[pid    14] sendmsg(9, {msg_name(0)=NULL, msg_iov(1)=[{"\1\0\0\0\0\0\0\0\24\0\0\0\0\0\0\0\5\0\0\0\0\0\0\0\21\0\0\0\0\0\0\0", 32}], msg_controllen=24, [{cmsg_len=20, cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, [17]}], msg_flags=0}, 0 <unfinished ...>
[pid    15] gettimeofday( <unfinished ...>
[pid    14] <... sendmsg resumed> )     = 32
[pid    15] <... gettimeofday resumed> {1491278991, 38652}, NULL) = 0
[pid    14] sendmsg(11, {msg_name(0)=NULL, msg_iov(1)=[{"\1\0\0\0\0\0\0\0\24\0\0\0\0\0\0\0\5\0\0\0\0\0\0\0\21\0\0\0\0\0\0\0", 32}], msg_controllen=24, [{cmsg_len=20, cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, [17]}], msg_flags=0}, 0 <unfinished ...>
[pid    15] recvmsg(8,  <unfinished ...>
[pid    14] <... sendmsg resumed> )     = 32
[pid    15] <... recvmsg resumed> {msg_name(0)=NULL, msg_iov(1)=[{"\1\0\0\0\0\0\0\0\24\0\0\0\0\0\0\0\5\0\0\0\0\0\0\0\21\0\0\0\0\0\0\0", 32}], msg_controllen=24, [{cmsg_len=20, cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, [14]}], msg_flags=0}, 0) = 32
[pid    14] sendmsg(13, {msg_name(0)=NULL, msg_iov(1)=[{"\1\0\0\0\0\0\0\0\24\0\0\0\0\0\0\0\5\0\0\0\0\0\0\0\21\0\0\0\0\0\0\0", 32}], msg_controllen=24, [{cmsg_len=20, cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, [17]}], msg_flags=0}, 0 <unfinished ...>
[pid    15] recvmsg(8,  <unfinished ...>
[pid    14] <... sendmsg resumed> )     = 32
[pid    14] sendmsg(15, {msg_name(0)=NULL, msg_iov(1)=[{"\1\0\0\0\0\0\0\0\24\0\0\0\0\0\0\0\5\0\0\0\0\0\0\0\21\0\0\0\0\0\0\0", 32}], msg_controllen=24, [{cmsg_len=20, cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, [17]}], msg_flags=0}, 0 <unfinished ...>
[pid    15] <... recvmsg resumed> 0x7fffc23c5120, 0) = -1 EAGAIN (Resource temporarily unavailable)
[pid    14] <... sendmsg resumed> )     = 32
[pid    14] socketpair(PF_LOCAL, SOCK_STREAM, 0 <unfinished ...>
[pid    15] epoll_wait(9,  <unfinished ...>
[pid    14] <... socketpair resumed> , [19, 20]) = 0
[pid    14] ioctl(19, FIONBIO, [1])     = 0
[pid    14] ioctl(20, FIONBIO, [1])     = 0
[pid    14] ioctl(19, FIOASYNC, [1])    = 0
[pid    14] fcntl(19, F_SETOWN, 14 <unfinished ...>
[pid    16] gettimeofday( <unfinished ...>
[pid    14] <... fcntl resumed> )       = 0
[pid    16] <... gettimeofday resumed> {1491278991, 55407}, NULL) = 0
[pid    14] fcntl(19, F_SETFD, FD_CLOEXEC <unfinished ...>
[pid    16] recvmsg(10,  <unfinished ...>
[pid    14] <... fcntl resumed> )       = 0
[pid    16] <... recvmsg resumed> {msg_name(0)=NULL, msg_iov(1)=[{"\1\0\0\0\0\0\0\0\21\0\0\0\0\0\0\0\2\0\0\0\0\0\0\0\v\0\0\0\0\0\0\0", 32}], msg_controllen=24, [{cmsg_len=20, cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, [8]}], msg_flags=0}, 0) = 32
[pid    14] fcntl(20, F_SETFD, FD_CLOEXEC <unfinished ...>
[pid    16] recvmsg(10,  <unfinished ...>
[pid    14] <... fcntl resumed> )       = 0
[pid    16] <... recvmsg resumed> {msg_name(0)=NULL, msg_iov(1)=[{"\1\0\0\0\0\0\0\0\22\0\0\0\0\0\0\0\3\0\0\0\0\0\0\0\r\0\0\0\0\0\0\0", 32}], msg_controllen=24, [{cmsg_len=20, cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, [9]}], msg_flags=0}, 0) = 32
[pid    14] clone( <unfinished ...>
[pid    16] recvmsg(10,  <unfinished ...>
[pid    17] <... fstat resumed> {st_mode=S_IFREG|0644, st_size=707, ...}) = 0
[pid    16] <... recvmsg resumed> {msg_name(0)=NULL, msg_iov(1)=[{"\1\0\0\0\0\0\0\0\23\0\0\0\0\0\0\0\4\0\0\0\0\0\0\0\17\0\0\0\0\0\0\0", 32}], msg_controllen=24, [{cmsg_len=20, cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, [13]}], msg_flags=0}, 0) = 32
[pid    17] mmap(NULL, 707, PROT_READ, MAP_SHARED, 13, 0 <unfinished ...>
[pid    16] recvmsg(10,  <unfinished ...>
[pid    17] <... mmap resumed> )        = 0x7f7a1e8ce000
[pid    16] <... recvmsg resumed> {msg_name(0)=NULL, msg_iov(1)=[{"\1\0\0\0\0\0\0\0\24\0\0\0\0\0\0\0\5\0\0\0\0\0\0\0\21\0\0\0\0\0\0\0", 32}], msg_controllen=24, [{cmsg_len=20, cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, [14]}], msg_flags=0}, 0) = 32
[pid    17] lseek(13, 707, SEEK_SET <unfinished ...>
[pid    16] recvmsg(10,  <unfinished ...>
[pid    17] <... lseek resumed> )       = 707
[pid    16] <... recvmsg resumed> 0x7fffc23c50d0, 0) = -1 EAGAIN (Resource temporarily unavailable)
[pid    14] <... clone resumed> child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x7f7a1e7d0a10) = 21
[pid    16] epoll_wait(11,  <unfinished ...>
[pid    14] sendmsg(3, {msg_name(0)=NULL, msg_iov(1)=[{"\1\0\0\0\0\0\0\0\25\0\0\0\0\0\0\0\6\0\0\0\0\0\0\0\23\0\0\0\0\0\0\0", 32}], msg_controllen=24, [{cmsg_len=20, cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, [19]}], msg_flags=0}, 0 <unfinished ...>
[pid    17] fstat(13,  <unfinished ...>
[pid    14] <... sendmsg resumed> )     = 32
[pid    14] sendmsg(9, {msg_name(0)=NULL, msg_iov(1)=[{"\1\0\0\0\0\0\0\0\25\0\0\0\0\0\0\0\6\0\0\0\0\0\0\0\23\0\0\0\0\0\0\0", 32}], msg_controllen=24, [{cmsg_len=20, cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, [19]}], msg_flags=0}, 0 <unfinished ...>
[pid    15] <... epoll_wait resumed> [{EPOLLIN, {u32=511246816, u64=140162473984480}}], 512, -1) = 1
[pid    14] <... sendmsg resumed> )     = 32
[pid    14] sendmsg(11, {msg_name(0)=NULL, msg_iov(1)=[{"\1\0\0\0\0\0\0\0\25\0\0\0\0\0\0\0\6\0\0\0\0\0\0\0\23\0\0\0\0\0\0\0", 32}], msg_controllen=24, [{cmsg_len=20, cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, [19]}], msg_flags=0}, 0 <unfinished ...>
[pid    15] gettimeofday( <unfinished ...>
[pid    14] <... sendmsg resumed> )     = 32
[pid    14] sendmsg(13, {msg_name(0)=NULL, msg_iov(1)=[{"\1\0\0\0\0\0\0\0\25\0\0\0\0\0\0\0\6\0\0\0\0\0\0\0\23\0\0\0\0\0\0\0", 32}], msg_controllen=24, [{cmsg_len=20, cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, [19]}], msg_flags=0}, 0 <unfinished ...>
[pid    15] <... gettimeofday resumed> {1491278991, 85331}, NULL) = 0
[pid    14] <... sendmsg resumed> )     = 32
[pid    14] sendmsg(15, {msg_name(0)=NULL, msg_iov(1)=[{"\1\0\0\0\0\0\0\0\25\0\0\0\0\0\0\0\6\0\0\0\0\0\0\0\23\0\0\0\0\0\0\0", 32}], msg_controllen=24, [{cmsg_len=20, cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, [19]}], msg_flags=0}, 0 <unfinished ...>
[pid    15] recvmsg(8,  <unfinished ...>
[pid    14] <... sendmsg resumed> )     = 32
[pid    15] <... recvmsg resumed> {msg_name(0)=NULL, msg_iov(1)=[{"\1\0\0\0\0\0\0\0\25\0\0\0\0\0\0\0\6\0\0\0\0\0\0\0\23\0\0\0\0\0\0\0", 32}], msg_controllen=24, [{cmsg_len=20, cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, [15]}], msg_flags=0}, 0) = 32
[pid    14] sendmsg(17, {msg_name(0)=NULL, msg_iov(1)=[{"\1\0\0\0\0\0\0\0\25\0\0\0\0\0\0\0\6\0\0\0\0\0\0\0\23\0\0\0\0\0\0\0", 32}], msg_controllen=24, [{cmsg_len=20, cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, [19]}], msg_flags=0}, 0 <unfinished ...>
[pid    15] recvmsg(8,  <unfinished ...>
[pid    14] <... sendmsg resumed> )     = 32
[pid    15] <... recvmsg resumed> 0x7fffc23c5120, 0) = -1 EAGAIN (Resource temporarily unavailable)
[pid    14] socketpair(PF_LOCAL, SOCK_STREAM, 0 <unfinished ...>
[pid    15] epoll_wait(9,  <unfinished ...>
[pid    14] <... socketpair resumed> , [21, 22]) = 0
[pid    14] ioctl(21, FIONBIO, [1])     = 0
[pid    14] ioctl(22, FIONBIO, [1])     = 0
[pid    14] ioctl(21, FIOASYNC, [1])    = 0
[pid    16] <... epoll_wait resumed> [{EPOLLIN, {u32=511246816, u64=140162473984480}}], 512, 500) = 1
[pid    14] fcntl(21, F_SETOWN, 14 <unfinished ...>
[pid    16] gettimeofday( <unfinished ...>
[pid    14] <... fcntl resumed> )       = 0
[pid    16] <... gettimeofday resumed> {1491278991, 100206}, NULL) = 0
[pid    14] fcntl(21, F_SETFD, FD_CLOEXEC) = 0
[pid    16] recvmsg(10,  <unfinished ...>
[pid    14] fcntl(22, F_SETFD, FD_CLOEXEC <unfinished ...>
[pid    16] <... recvmsg resumed> {msg_name(0)=NULL, msg_iov(1)=[{"\1\0\0\0\0\0\0\0\25\0\0\0\0\0\0\0\6\0\0\0\0\0\0\0\23\0\0\0\0\0\0\0", 32}], msg_controllen=24, [{cmsg_len=20, cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, [15]}], msg_flags=0}, 0) = 32
[pid    14] <... fcntl resumed> )       = 0
[pid    16] recvmsg(10,  <unfinished ...>
[pid    14] clone( <unfinished ...>
[pid    16] <... recvmsg resumed> 0x7fffc23c50d0, 0) = -1 EAGAIN (Resource temporarily unavailable)
[pid    17] <... fstat resumed> {st_mode=S_IFREG|0644, st_size=707, ...}) = 0
[pid    16] epoll_wait(11,  <unfinished ...>
[pid    17] munmap(0x7f7a1e8ce000, 707strace: Process 18 attached
) = 0
[pid    17] close(13 <unfinished ...>
[pid    18] set_robust_list(0x7f7a1e7d0a20, 24 <unfinished ...>
[pid    17] <... close resumed> )       = 0
[pid    18] <... set_robust_list resumed> ) = 0
[pid    17] setgroups(1, [33] <unfinished ...>
[pid    18] geteuid( <unfinished ...>
[pid    17] <... setgroups resumed> )   = 0
[pid    18] <... geteuid resumed> )     = 0
[pid    17] setuid(33 <unfinished ...>
[pid    18] setgid(33 <unfinished ...>
[pid    14] <... clone resumed> child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x7f7a1e7d0a10) = 22
[pid    17] <... setuid resumed> )      = 0
[pid    14] sendmsg(3, {msg_name(0)=NULL, msg_iov(1)=[{"\1\0\0\0\0\0\0\0\26\0\0\0\0\0\0\0\7\0\0\0\0\0\0\0\25\0\0\0\0\0\0\0", 32}], msg_controllen=24, [{cmsg_len=20, cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, [21]}], msg_flags=0}, 0 <unfinished ...>
[pid    17] prctl(PR_SET_DUMPABLE, 1 <unfinished ...>
[pid    14] <... sendmsg resumed> )     = 32
[pid    14] sendmsg(9, {msg_name(0)=NULL, msg_iov(1)=[{"\1\0\0\0\0\0\0\0\26\0\0\0\0\0\0\0\7\0\0\0\0\0\0\0\25\0\0\0\0\0\0\0", 32}], msg_controllen=24, [{cmsg_len=20, cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, [21]}], msg_flags=0}, 0 <unfinished ...>
[pid    15] <... epoll_wait resumed> [{EPOLLIN, {u32=511246816, u64=140162473984480}}], 512, -1) = 1
[pid    14] <... sendmsg resumed> )     = 32
[pid    14] sendmsg(11, {msg_name(0)=NULL, msg_iov(1)=[{"\1\0\0\0\0\0\0\0\26\0\0\0\0\0\0\0\7\0\0\0\0\0\0\0\25\0\0\0\0\0\0\0", 32}], msg_controllen=24, [{cmsg_len=20, cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, [21]}], msg_flags=0}, 0 <unfinished ...>
[pid    15] gettimeofday( <unfinished ...>
[pid    14] <... sendmsg resumed> )     = 32
[pid    14] sendmsg(13, {msg_name(0)=NULL, msg_iov(1)=[{"\1\0\0\0\0\0\0\0\26\0\0\0\0\0\0\0\7\0\0\0\0\0\0\0\25\0\0\0\0\0\0\0", 32}], msg_controllen=24, [{cmsg_len=20, cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, [21]}], msg_flags=0}, 0 <unfinished ...>
[pid    15] <... gettimeofday resumed> {1491278991, 128902}, NULL) = 0
[pid    14] <... sendmsg resumed> )     = 32
[pid    14] sendmsg(15, {msg_name(0)=NULL, msg_iov(1)=[{"\1\0\0\0\0\0\0\0\26\0\0\0\0\0\0\0\7\0\0\0\0\0\0\0\25\0\0\0\0\0\0\0", 32}], msg_controllen=24, [{cmsg_len=20, cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, [21]}], msg_flags=0}, 0 <unfinished ...>
[pid    15] recvmsg(8,  <unfinished ...>
[pid    14] <... sendmsg resumed> )     = 32
[pid    14] sendmsg(17, {msg_name(0)=NULL, msg_iov(1)=[{"\1\0\0\0\0\0\0\0\26\0\0\0\0\0\0\0\7\0\0\0\0\0\0\0\25\0\0\0\0\0\0\0", 32}], msg_controllen=24, [{cmsg_len=20, cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, [21]}], msg_flags=0}, 0 <unfinished ...>
[pid    15] <... recvmsg resumed> {msg_name(0)=NULL, msg_iov(1)=[{"\1\0\0\0\0\0\0\0\26\0\0\0\0\0\0\0\7\0\0\0\0\0\0\0\25\0\0\0\0\0\0\0", 32}], msg_controllen=24, [{cmsg_len=20, cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, [16]}], msg_flags=0}, 0) = 32
[pid    14] <... sendmsg resumed> )     = 32
[pid    14] sendmsg(19, {msg_name(0)=NULL, msg_iov(1)=[{"\1\0\0\0\0\0\0\0\26\0\0\0\0\0\0\0\7\0\0\0\0\0\0\0\25\0\0\0\0\0\0\0", 32}], msg_controllen=24, [{cmsg_len=20, cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, [21]}], msg_flags=0}, 0 <unfinished ...>
[pid    15] recvmsg(8,  <unfinished ...>
[pid    14] <... sendmsg resumed> )     = 32
[pid    15] <... recvmsg resumed> 0x7fffc23c5120, 0) = -1 EAGAIN (Resource temporarily unavailable)
[pid    14] rt_sigsuspend([], 8 <unfinished ...>
[pid    15] epoll_wait(9,  <unfinished ...>
[pid    16] <... epoll_wait resumed> [{EPOLLIN, {u32=511246816, u64=140162473984480}}], 512, 500) = 1
[pid    17] <... prctl resumed> )       = 0
[pid    16] gettimeofday({1491278991, 144405}, NULL) = 0
[pid    17] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid    16] recvmsg(10,  <unfinished ...>
[pid    17] <... rt_sigprocmask resumed> NULL, 8) = 0
[pid    16] <... recvmsg resumed> {msg_name(0)=NULL, msg_iov(1)=[{"\1\0\0\0\0\0\0\0\26\0\0\0\0\0\0\0\7\0\0\0\0\0\0\0\25\0\0\0\0\0\0\0", 32}], msg_controllen=24, [{cmsg_len=20, cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, [16]}], msg_flags=0}, 0) = 32
[pid    16] recvmsg(10,  <unfinished ...>
[pid    17] epoll_create(384 <unfinished ...>
[pid    16] <... recvmsg resumed> 0x7fffc23c50d0, 0) = -1 EAGAIN (Resource temporarily unavailable)
[pid    17] <... epoll_create resumed> ) = 13
[pid    16] epoll_wait(11,  <unfinished ...>
[pid    17] eventfd2(0, 0 <unfinished ...>
[pid    18] <... setgid resumed> )      = 0
[pid    17] <... eventfd2 resumed> )    = 14
[pid    18] open("/proc/sys/kernel/ngroups_max", O_RDONLY <unfinished ...>
[pid    17] epoll_ctl(13, EPOLL_CTL_ADD, 14, {EPOLLIN|EPOLLET, {u32=517204640, u64=140162479942304}} <unfinished ...>
[pid    18] <... open resumed> )        = 15
[pid    17] <... epoll_ctl resumed> )   = 0
[pid    18] read(15,  <unfinished ...>
[pid    17] mmap(NULL, 180224, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 <unfinished ...>
[pid    18] <... read resumed> "65536\n", 31) = 6
[pid    17] <... mmap resumed> )        = 0x7f7a1e790000
[pid    18] close(15 <unfinished ...>
[pid    17] brk(0x7fffbb66e000 <unfinished ...>
[pid    18] <... close resumed> )       = 0
[pid    17] <... brk resumed> )         = 0x7fffbb66e000
[pid    18] open("/etc/group", O_RDONLY|O_CLOEXEC <unfinished ...>
[pid    17] gettimeofday( <unfinished ...>
[pid    18] <... open resumed> )        = 15
[pid    17] <... gettimeofday resumed> {1491278991, 163829}, NULL) = 0
[pid    18] lseek(15, 0, SEEK_CUR <unfinished ...>
[pid    17] close(8 <unfinished ...>
[pid    18] <... lseek resumed> )       = 0
[pid    17] <... close resumed> )       = 0
[pid    18] fstat(15,  <unfinished ...>
[pid    17] close(10 <unfinished ...>
[pid    18] <... fstat resumed> {st_mode=S_IFREG|0644, st_size=707, ...}) = 0
[pid    17] <... close resumed> )       = 0
[pid    18] mmap(NULL, 707, PROT_READ, MAP_SHARED, 15, 0 <unfinished ...>
[pid    17] close(11 <unfinished ...>
[pid    18] <... mmap resumed> )        = 0x7f7a1e8ce000
[pid    17] <... close resumed> )       = 0
[pid    18] lseek(15, 707, SEEK_SET <unfinished ...>
[pid    17] epoll_ctl(13, EPOLL_CTL_ADD, 12, {EPOLLIN|EPOLLRDHUP, {u32=511246816, u64=140162473984480}} <unfinished ...>
[pid    18] <... lseek resumed> )       = 707
[pid    17] <... epoll_ctl resumed> )   = 0
[pid    18] fstat(15,  <unfinished ...>
[pid    17] epoll_wait(13,  <unfinished ...>
[pid    18] <... fstat resumed> {st_mode=S_IFREG|0644, st_size=707, ...}) = 0
[pid    17] <... epoll_wait resumed> [{EPOLLIN, {u32=511246816, u64=140162473984480}}], 512, 500) = 1
[pid    18] munmap(0x7f7a1e8ce000, 707 <unfinished ...>
[pid    17] gettimeofday({1491278991, 186254}, NULL) = 0
[pid    18] <... munmap resumed> )      = 0
[pid    17] recvmsg(12,  <unfinished ...>
[pid    18] close(15 <unfinished ...>
[pid    17] <... recvmsg resumed> {msg_name(0)=NULL, msg_iov(1)=[{"\1\0\0\0\0\0\0\0\22\0\0\0\0\0\0\0\3\0\0\0\0\0\0\0\r\0\0\0\0\0\0\0", 32}], msg_controllen=24, [{cmsg_len=20, cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, [8]}], msg_flags=0}, 0) = 32
[pid    18] <... close resumed> )       = 0
[pid    17] recvmsg(12,  <unfinished ...>
[pid    18] setgroups(1, [33] <unfinished ...>
[pid    17] <... recvmsg resumed> {msg_name(0)=NULL, msg_iov(1)=[{"\1\0\0\0\0\0\0\0\23\0\0\0\0\0\0\0\4\0\0\0\0\0\0\0\17\0\0\0\0\0\0\0", 32}], msg_controllen=24, [{cmsg_len=20, cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, [10]}], msg_flags=0}, 0) = 32
[pid    18] <... setgroups resumed> )   = 0
[pid    17] recvmsg(12,  <unfinished ...>
[pid    18] setuid(33 <unfinished ...>
[pid    17] <... recvmsg resumed> {msg_name(0)=NULL, msg_iov(1)=[{"\1\0\0\0\0\0\0\0\24\0\0\0\0\0\0\0\5\0\0\0\0\0\0\0\21\0\0\0\0\0\0\0", 32}], msg_controllen=24, [{cmsg_len=20, cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, [11]}], msg_flags=0}, 0) = 32
[pid    18] <... setuid resumed> )      = 0
[pid    17] recvmsg(12,  <unfinished ...>
[pid    18] prctl(PR_SET_DUMPABLE, 1 <unfinished ...>
[pid    17] <... recvmsg resumed> {msg_name(0)=NULL, msg_iov(1)=[{"\1\0\0\0\0\0\0\0\25\0\0\0\0\0\0\0\6\0\0\0\0\0\0\0\23\0\0\0\0\0\0\0", 32}], msg_controllen=24, [{cmsg_len=20, cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, [15]}], msg_flags=0}, 0) = 32
[pid    17] recvmsg(12,  <unfinished ...>
[pid    18] <... prctl resumed> )       = 0
[pid    17] <... recvmsg resumed> {msg_name(0)=NULL, msg_iov(1)=[{"\1\0\0\0\0\0\0\0\26\0\0\0\0\0\0\0\7\0\0\0\0\0\0\0\25\0\0\0\0\0\0\0", 32}], msg_controllen=24, [{cmsg_len=20, cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, [16]}], msg_flags=0}, 0) = 32
[pid    17] recvmsg(12,  <unfinished ...>
[pid    18] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid    17] <... recvmsg resumed> 0x7fffc23c50d0, 0) = -1 EAGAIN (Resource temporarily unavailable)
[pid    18] <... rt_sigprocmask resumed> NULL, 8) = 0
[pid    17] epoll_wait(13,  <unfinished ...>
[pid    18] epoll_create(384strace: Process 19 attached
)           = 15
[pid    18] eventfd2(0, 0 <unfinished ...>
[pid    19] set_robust_list(0x7f7a1e7d0a20, 24 <unfinished ...>
[pid    18] <... eventfd2 resumed> )    = 16
[pid    19] <... set_robust_list resumed> ) = 0
[pid    18] epoll_ctl(15, EPOLL_CTL_ADD, 16, {EPOLLIN|EPOLLET, {u32=517204640, u64=140162479942304}} <unfinished ...>
[pid    19] geteuid( <unfinished ...>
[pid    18] <... epoll_ctl resumed> )   = 0
[pid    19] <... geteuid resumed> )     = 0
[pid    18] mmap(NULL, 180224, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 <unfinished ...>
[pid    19] setgid(33 <unfinished ...>
[pid    18] <... mmap resumed> )        = 0x7f7a1e790000
[pid    19] <... setgid resumed> )      = 0
[pid    18] brk(0x7fffbb66e000 <unfinished ...>
[pid    19] open("/proc/sys/kernel/ngroups_max", O_RDONLY <unfinished ...>
[pid    18] <... brk resumed> )         = 0x7fffbb66e000
[pid    19] <... open resumed> )        = 17
[pid    18] gettimeofday( <unfinished ...>
[pid    19] read(17,  <unfinished ...>
[pid    18] <... gettimeofday resumed> {1491278991, 217746}, NULL) = 0
[pid    19] <... read resumed> "65536\n", 31) = 6
[pid    18] close(8 <unfinished ...>
[pid    19] close(17 <unfinished ...>
[pid    18] <... close resumed> )       = 0
[pid    19] <... close resumed> )       = 0
[pid    18] close(10 <unfinished ...>
[pid    19] open("/etc/group", O_RDONLY|O_CLOEXEC <unfinished ...>
[pid    18] <... close resumed> )       = 0
[pid    19] <... open resumed> )        = 17
[pid    18] close(12 <unfinished ...>
[pid    19] lseek(17, 0, SEEK_CUR <unfinished ...>
[pid    18] <... close resumed> )       = 0
[pid    18] close(13 <unfinished ...>
[pid    19] <... lseek resumed> )       = 0
[pid    18] <... close resumed> )       = 0
[pid    19] fstat(17,  <unfinished ...>
[pid    18] epoll_ctl(15, EPOLL_CTL_ADD, 14, {EPOLLIN|EPOLLRDHUP, {u32=511246816, u64=140162473984480}} <unfinished ...>
[pid    19] <... fstat resumed> {st_mode=S_IFREG|0644, st_size=707, ...}) = 0
[pid    18] <... epoll_ctl resumed> )   = 0
[pid    19] mmap(NULL, 707, PROT_READ, MAP_SHARED, 17, 0 <unfinished ...>
[pid    18] epoll_wait(15,  <unfinished ...>
[pid    19] <... mmap resumed> )        = 0x7f7a1e8ce000
[pid    18] <... epoll_wait resumed> [{EPOLLIN, {u32=511246816, u64=140162473984480}}], 512, 500) = 1
[pid    19] lseek(17, 707, SEEK_SET <unfinished ...>
[pid    18] gettimeofday({1491278991, 248846}, NULL) = 0
[pid    19] <... lseek resumed> )       = 707
[pid    18] recvmsg(14,  <unfinished ...>
[pid    19] fstat(17,  <unfinished ...>
[pid    18] <... recvmsg resumed> {msg_name(0)=NULL, msg_iov(1)=[{"\1\0\0\0\0\0\0\0\23\0\0\0\0\0\0\0\4\0\0\0\0\0\0\0\17\0\0\0\0\0\0\0", 32}], msg_controllen=24, [{cmsg_len=20, cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, [8]}], msg_flags=0}, 0) = 32
[pid    18] recvmsg(14,  <unfinished ...>
[pid    19] <... fstat resumed> {st_mode=S_IFREG|0644, st_size=707, ...}) = 0
[pid    18] <... recvmsg resumed> {msg_name(0)=NULL, msg_iov(1)=[{"\1\0\0\0\0\0\0\0\24\0\0\0\0\0\0\0\5\0\0\0\0\0\0\0\21\0\0\0\0\0\0\0", 32}], msg_controllen=24, [{cmsg_len=20, cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, [10]}], msg_flags=0}, 0) = 32
[pid    18] recvmsg(14,  <unfinished ...>
[pid    19] munmap(0x7f7a1e8ce000, 707 <unfinished ...>
[pid    18] <... recvmsg resumed> {msg_name(0)=NULL, msg_iov(1)=[{"\1\0\0\0\0\0\0\0\25\0\0\0\0\0\0\0\6\0\0\0\0\0\0\0\23\0\0\0\0\0\0\0", 32}], msg_controllen=24, [{cmsg_len=20, cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, [12]}], msg_flags=0}, 0) = 32
[pid    18] recvmsg(14,  <unfinished ...>
[pid    19] <... munmap resumed> )      = 0
[pid    18] <... recvmsg resumed> {msg_name(0)=NULL, msg_iov(1)=[{"\1\0\0\0\0\0\0\0\26\0\0\0\0\0\0\0\7\0\0\0\0\0\0\0\25\0\0\0\0\0\0\0", 32}], msg_controllen=24, [{cmsg_len=20, cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, [13]}], msg_flags=0}, 0) = 32
[pid    19] close(17 <unfinished ...>
[pid    18] recvmsg(14,  <unfinished ...>
[pid    19] <... close resumed> )       = 0
[pid    18] <... recvmsg resumed> 0x7fffc23c50d0, 0) = -1 EAGAIN (Resource temporarily unavailable)
[pid    19] setgroups(1, [33] <unfinished ...>
[pid    18] epoll_wait(15,  <unfinished ...>
[pid    19] <... setgroups resumed> )   = 0
strace: Process 20 attached
[pid    19] setuid(33 <unfinished ...>
[pid    20] set_robust_list(0x7f7a1e7d0a20, 24 <unfinished ...>
[pid    19] <... setuid resumed> )      = 0
[pid    20] <... set_robust_list resumed> ) = 0
[pid    19] prctl(PR_SET_DUMPABLE, 1 <unfinished ...>
[pid    20] geteuid( <unfinished ...>
[pid    19] <... prctl resumed> )       = 0
[pid    20] <... geteuid resumed> )     = 0
[pid    19] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid    20] setgid(33 <unfinished ...>
[pid    19] epoll_create(384 <unfinished ...>
[pid    20] <... setgid resumed> )      = 0
[pid    19] <... epoll_create resumed> ) = 17
[pid    20] open("/proc/sys/kernel/ngroups_max", O_RDONLY <unfinished ...>
[pid    19] eventfd2(0, 0 <unfinished ...>
[pid    20] <... open resumed> )        = 19
[pid    19] <... eventfd2 resumed> )    = 18
[pid    20] read(19,  <unfinished ...>
[pid    19] epoll_ctl(17, EPOLL_CTL_ADD, 18, {EPOLLIN|EPOLLET, {u32=517204640, u64=140162479942304}} <unfinished ...>
[pid    20] <... read resumed> "65536\n", 31) = 6
[pid    19] <... epoll_ctl resumed> )   = 0
[pid    20] close(19 <unfinished ...>
[pid    19] mmap(NULL, 180224, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 <unfinished ...>
[pid    20] <... close resumed> )       = 0
[pid    19] <... mmap resumed> )        = 0x7f7a1e790000
[pid    20] open("/etc/group", O_RDONLY|O_CLOEXEC <unfinished ...>
[pid    19] brk(0x7fffbb66e000 <unfinished ...>
[pid    20] <... open resumed> )        = 19
[pid    19] <... brk resumed> )         = 0x7fffbb66e000
[pid    20] lseek(19, 0, SEEK_CUR <unfinished ...>
[pid    19] gettimeofday({1491278991, 292780}, NULL) = 0
[pid    20] <... lseek resumed> )       = 0
[pid    19] close(8 <unfinished ...>
[pid    20] fstat(19,  <unfinished ...>
[pid    19] <... close resumed> )       = 0
[pid    19] close(10 <unfinished ...>
[pid    20] <... fstat resumed> {st_mode=S_IFREG|0644, st_size=707, ...}) = 0
[pid    19] <... close resumed> )       = 0
[pid    20] mmap(NULL, 707, PROT_READ, MAP_SHARED, 19, 0 <unfinished ...>
[pid    19] close(12 <unfinished ...>
[pid    20] <... mmap resumed> )        = 0x7f7a1e8ce000
[pid    19] <... close resumed> )       = 0
[pid    20] lseek(19, 707, SEEK_SET <unfinished ...>
[pid    19] close(14 <unfinished ...>
[pid    20] <... lseek resumed> )       = 707
[pid    19] <... close resumed> )       = 0
[pid    19] close(15 <unfinished ...>
[pid    20] fstat(19,  <unfinished ...>
[pid    19] <... close resumed> )       = 0
[pid    20] <... fstat resumed> {st_mode=S_IFREG|0644, st_size=707, ...}) = 0
[pid    19] epoll_ctl(17, EPOLL_CTL_ADD, 16, {EPOLLIN|EPOLLRDHUP, {u32=511246816, u64=140162473984480}} <unfinished ...>
[pid    20] munmap(0x7f7a1e8ce000, 707 <unfinished ...>
[pid    19] <... epoll_ctl resumed> )   = 0
[pid    20] <... munmap resumed> )      = 0
[pid    19] epoll_wait(17,  <unfinished ...>
[pid    20] close(19 <unfinished ...>
[pid    19] <... epoll_wait resumed> [{EPOLLIN, {u32=511246816, u64=140162473984480}}], 512, 500) = 1
[pid    20] <... close resumed> )       = 0
[pid    19] gettimeofday( <unfinished ...>
[pid    20] setgroups(1, [33] <unfinished ...>
[pid    19] <... gettimeofday resumed> {1491278991, 313941}, NULL) = 0
[pid    20] <... setgroups resumed> )   = 0
[pid    19] recvmsg(16,  <unfinished ...>
[pid    20] setuid(33 <unfinished ...>
[pid    19] <... recvmsg resumed> {msg_name(0)=NULL, msg_iov(1)=[{"\1\0\0\0\0\0\0\0\24\0\0\0\0\0\0\0\5\0\0\0\0\0\0\0\21\0\0\0\0\0\0\0", 32}], msg_controllen=24, [{cmsg_len=20, cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, [8]}], msg_flags=0}, 0) = 32
[pid    19] recvmsg(16,  <unfinished ...>
[pid    20] <... setuid resumed> )      = 0
[pid    19] <... recvmsg resumed> {msg_name(0)=NULL, msg_iov(1)=[{"\1\0\0\0\0\0\0\0\25\0\0\0\0\0\0\0\6\0\0\0\0\0\0\0\23\0\0\0\0\0\0\0", 32}], msg_controllen=24, [{cmsg_len=20, cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, [10]}], msg_flags=0}, 0) = 32
[pid    20] prctl(PR_SET_DUMPABLE, 1 <unfinished ...>
[pid    19] recvmsg(16,  <unfinished ...>
[pid    20] <... prctl resumed> )       = 0
[pid    19] <... recvmsg resumed> {msg_name(0)=NULL, msg_iov(1)=[{"\1\0\0\0\0\0\0\0\26\0\0\0\0\0\0\0\7\0\0\0\0\0\0\0\25\0\0\0\0\0\0\0", 32}], msg_controllen=24, [{cmsg_len=20, cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, [12]}], msg_flags=0}, 0) = 32
[pid    20] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid    19] recvmsg(16,  <unfinished ...>
[pid    20] <... rt_sigprocmask resumed> NULL, 8) = 0
[pid    19] <... recvmsg resumed> 0x7fffc23c50d0, 0) = -1 EAGAIN (Resource temporarily unavailable)
[pid    20] epoll_create(384 <unfinished ...>
[pid    19] epoll_wait(17,  <unfinished ...>
[pid    20] <... epoll_create resumed> ) = 19
strace: Process 21 attached
[pid    20] eventfd2(0, 0 <unfinished ...>
[pid    21] set_robust_list(0x7f7a1e7d0a20, 24 <unfinished ...>
[pid    20] <... eventfd2 resumed> )    = 20
[pid    21] <... set_robust_list resumed> ) = 0
[pid    20] epoll_ctl(19, EPOLL_CTL_ADD, 20, {EPOLLIN|EPOLLET, {u32=517204640, u64=140162479942304}} <unfinished ...>
[pid    21] geteuid( <unfinished ...>
[pid    20] <... epoll_ctl resumed> )   = 0
[pid    21] <... geteuid resumed> )     = 0
[pid    20] mmap(NULL, 180224, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 <unfinished ...>
[pid    21] setgid(33 <unfinished ...>
[pid    20] <... mmap resumed> )        = 0x7f7a1e790000
[pid    21] <... setgid resumed> )      = 0
[pid    20] brk(0x7fffbb66e000 <unfinished ...>
[pid    21] open("/proc/sys/kernel/ngroups_max", O_RDONLY <unfinished ...>
[pid    20] <... brk resumed> )         = 0x7fffbb66e000
[pid    21] <... open resumed> )        = 21
[pid    20] gettimeofday( <unfinished ...>
[pid    21] read(21,  <unfinished ...>
[pid    20] <... gettimeofday resumed> {1491278991, 341466}, NULL) = 0
[pid    21] <... read resumed> "65536\n", 31) = 6
[pid    20] close(8 <unfinished ...>
[pid    21] close(21 <unfinished ...>
[pid    20] <... close resumed> )       = 0
[pid    21] <... close resumed> )       = 0
[pid    20] close(10 <unfinished ...>
[pid    21] open("/etc/group", O_RDONLY|O_CLOEXEC <unfinished ...>
[pid    20] <... close resumed> )       = 0
[pid    21] <... open resumed> )        = 21
[pid    20] close(12 <unfinished ...>
[pid    21] lseek(21, 0, SEEK_CUR <unfinished ...>
[pid    20] <... close resumed> )       = 0
[pid    21] <... lseek resumed> )       = 0
[pid    20] close(14 <unfinished ...>
[pid    21] fstat(21,  <unfinished ...>
[pid    20] <... close resumed> )       = 0
[pid    21] <... fstat resumed> {st_mode=S_IFREG|0644, st_size=707, ...}) = 0
[pid    20] close(16 <unfinished ...>
[pid    21] mmap(NULL, 707, PROT_READ, MAP_SHARED, 21, 0 <unfinished ...>
[pid    20] <... close resumed> )       = 0
[pid    21] <... mmap resumed> )        = 0x7f7a1e8ce000
[pid    20] close(17 <unfinished ...>
[pid    21] lseek(21, 707, SEEK_SET <unfinished ...>
[pid    20] <... close resumed> )       = 0
[pid    21] <... lseek resumed> )       = 707
[pid    20] epoll_ctl(19, EPOLL_CTL_ADD, 18, {EPOLLIN|EPOLLRDHUP, {u32=511246816, u64=140162473984480}} <unfinished ...>
[pid    21] fstat(21,  <unfinished ...>
[pid    20] <... epoll_ctl resumed> )   = 0
[pid    21] <... fstat resumed> {st_mode=S_IFREG|0644, st_size=707, ...}) = 0
[pid    20] epoll_wait(19,  <unfinished ...>
[pid    21] munmap(0x7f7a1e8ce000, 707 <unfinished ...>
[pid    20] <... epoll_wait resumed> [{EPOLLIN, {u32=511246816, u64=140162473984480}}], 512, 500) = 1
[pid    21] <... munmap resumed> )      = 0
[pid    20] gettimeofday( <unfinished ...>
[pid    21] close(21 <unfinished ...>
[pid    20] <... gettimeofday resumed> {1491278991, 363465}, NULL) = 0
[pid    21] <... close resumed> )       = 0
[pid    20] recvmsg(18,  <unfinished ...>
[pid    21] setgroups(1, [33] <unfinished ...>
[pid    20] <... recvmsg resumed> {msg_name(0)=NULL, msg_iov(1)=[{"\1\0\0\0\0\0\0\0\25\0\0\0\0\0\0\0\6\0\0\0\0\0\0\0\23\0\0\0\0\0\0\0", 32}], msg_controllen=24, [{cmsg_len=20, cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, [8]}], msg_flags=0}, 0) = 32
[pid    21] <... setgroups resumed> )   = 0
[pid    20] recvmsg(18,  <unfinished ...>
[pid    21] setuid(33 <unfinished ...>
[pid    20] <... recvmsg resumed> {msg_name(0)=NULL, msg_iov(1)=[{"\1\0\0\0\0\0\0\0\26\0\0\0\0\0\0\0\7\0\0\0\0\0\0\0\25\0\0\0\0\0\0\0", 32}], msg_controllen=24, [{cmsg_len=20, cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, [10]}], msg_flags=0}, 0) = 32
[pid    21] <... setuid resumed> )      = 0
[pid    20] recvmsg(18,  <unfinished ...>
[pid    21] prctl(PR_SET_DUMPABLE, 1 <unfinished ...>
[pid    20] <... recvmsg resumed> 0x7fffc23c50d0, 0) = -1 EAGAIN (Resource temporarily unavailable)
[pid    21] <... prctl resumed> )       = 0
[pid    20] epoll_wait(19,  <unfinished ...>
[pid    21] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
strace: Process 22 attached
[pid    21] epoll_create(384 <unfinished ...>
[pid    22] set_robust_list(0x7f7a1e7d0a20, 24 <unfinished ...>
[pid    21] <... epoll_create resumed> ) = 21
[pid    21] eventfd2(0, 0 <unfinished ...>
[pid    22] <... set_robust_list resumed> ) = 0
[pid    21] <... eventfd2 resumed> )    = 22
[pid    21] epoll_ctl(21, EPOLL_CTL_ADD, 22, {EPOLLIN|EPOLLET, {u32=517204640, u64=140162479942304}} <unfinished ...>
[pid    22] geteuid( <unfinished ...>
[pid    21] <... epoll_ctl resumed> )   = 0
[pid    22] <... geteuid resumed> )     = 0
[pid    21] mmap(NULL, 180224, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 <unfinished ...>
[pid    22] setgid(33 <unfinished ...>
[pid    21] <... mmap resumed> )        = 0x7f7a1e790000
[pid    22] <... setgid resumed> )      = 0
[pid    21] brk(0x7fffbb66e000 <unfinished ...>
[pid    22] open("/proc/sys/kernel/ngroups_max", O_RDONLY <unfinished ...>
[pid    21] <... brk resumed> )         = 0x7fffbb66e000
[pid    22] <... open resumed> )        = 23
[pid    21] gettimeofday({1491278991, 390806}, NULL) = 0
[pid    22] read(23,  <unfinished ...>
[pid    21] close(8 <unfinished ...>
[pid    22] <... read resumed> "65536\n", 31) = 6
[pid    21] <... close resumed> )       = 0
[pid    22] close(23 <unfinished ...>
[pid    21] close(10 <unfinished ...>
[pid    22] <... close resumed> )       = 0
[pid    21] <... close resumed> )       = 0
[pid    22] open("/etc/group", O_RDONLY|O_CLOEXEC <unfinished ...>
[pid    21] close(12 <unfinished ...>
[pid    22] <... open resumed> )        = 23
[pid    21] <... close resumed> )       = 0
[pid    22] lseek(23, 0, SEEK_CUR <unfinished ...>
[pid    21] close(14 <unfinished ...>
[pid    22] <... lseek resumed> )       = 0
[pid    21] <... close resumed> )       = 0
[pid    22] fstat(23,  <unfinished ...>
[pid    21] close(16 <unfinished ...>
[pid    22] <... fstat resumed> {st_mode=S_IFREG|0644, st_size=707, ...}) = 0
[pid    21] <... close resumed> )       = 0
[pid    21] close(18 <unfinished ...>
[pid    22] mmap(NULL, 707, PROT_READ, MAP_SHARED, 23, 0 <unfinished ...>
[pid    21] <... close resumed> )       = 0
[pid    21] close(19 <unfinished ...>
[pid    22] <... mmap resumed> )        = 0x7f7a1e8ce000
[pid    21] <... close resumed> )       = 0
[pid    22] lseek(23, 707, SEEK_SET <unfinished ...>
[pid    21] epoll_ctl(21, EPOLL_CTL_ADD, 20, {EPOLLIN|EPOLLRDHUP, {u32=511246816, u64=140162473984480}} <unfinished ...>
[pid    22] <... lseek resumed> )       = 707
[pid    21] <... epoll_ctl resumed> )   = 0
[pid    22] fstat(23,  <unfinished ...>
[pid    21] epoll_wait(21,  <unfinished ...>
[pid    22] <... fstat resumed> {st_mode=S_IFREG|0644, st_size=707, ...}) = 0
[pid    21] <... epoll_wait resumed> [{EPOLLIN, {u32=511246816, u64=140162473984480}}], 512, 500) = 1
[pid    22] munmap(0x7f7a1e8ce000, 707 <unfinished ...>
[pid    21] gettimeofday( <unfinished ...>
[pid    22] <... munmap resumed> )      = 0
[pid    21] <... gettimeofday resumed> {1491278991, 412258}, NULL) = 0
[pid    22] close(23 <unfinished ...>
[pid    21] recvmsg(20,  <unfinished ...>
[pid    22] <... close resumed> )       = 0
[pid    21] <... recvmsg resumed> {msg_name(0)=NULL, msg_iov(1)=[{"\1\0\0\0\0\0\0\0\26\0\0\0\0\0\0\0\7\0\0\0\0\0\0\0\25\0\0\0\0\0\0\0", 32}], msg_controllen=24, [{cmsg_len=20, cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, [8]}], msg_flags=0}, 0) = 32
[pid    22] setgroups(1, [33] <unfinished ...>
[pid    21] recvmsg(20,  <unfinished ...>
[pid    22] <... setgroups resumed> )   = 0
[pid    21] <... recvmsg resumed> 0x7fffc23c50d0, 0) = -1 EAGAIN (Resource temporarily unavailable)
[pid    22] setuid(33 <unfinished ...>
[pid    21] epoll_wait(21,  <unfinished ...>
[pid    22] <... setuid resumed> )      = 0
[pid    22] prctl(PR_SET_DUMPABLE, 1)   = 0
[pid    22] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
[pid    22] epoll_create(384)           = 23
[pid    22] eventfd2(0, 0)              = 24
[pid    22] epoll_ctl(23, EPOLL_CTL_ADD, 24, {EPOLLIN|EPOLLET, {u32=517204640, u64=140162479942304}}) = 0
[pid    22] mmap(NULL, 180224, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7a1e790000
[pid    22] brk(0x7fffbb66e000)         = 0x7fffbb66e000
[pid    22] gettimeofday({1491278991, 424818}, NULL) = 0
[pid    22] close(8)                    = 0
[pid    22] close(10)                   = 0
[pid    22] close(12)                   = 0
[pid    22] close(14)                   = 0
[pid    22] close(16)                   = 0
[pid    22] close(18)                   = 0
[pid    22] close(20)                   = 0
[pid    22] close(21)                   = 0
[pid    22] epoll_ctl(23, EPOLL_CTL_ADD, 22, {EPOLLIN|EPOLLRDHUP, {u32=511246816, u64=140162473984480}}) = 0
[pid    22] epoll_wait(23,  <unfinished ...>
[pid    16] <... epoll_wait resumed> [], 512, 500) = 0
[pid    16] gettimeofday({1491278991, 679301}, NULL) = 0
[pid    16] epoll_wait(11,  <unfinished ...>
[pid    17] <... epoll_wait resumed> [], 512, 500) = 0
[pid    17] gettimeofday({1491278991, 721196}, NULL) = 0
[pid    17] epoll_wait(13,  <unfinished ...>
[pid    18] <... epoll_wait resumed> [], 512, 500) = 0
[pid    18] gettimeofday({1491278991, 769041}, NULL) = 0
[pid    18] epoll_wait(15,  <unfinished ...>
[pid    19] <... epoll_wait resumed> [], 512, 500) = 0
[pid    19] gettimeofday({1491278991, 832026}, NULL) = 0
[pid    19] epoll_wait(17,  <unfinished ...>
[pid    20] <... epoll_wait resumed> [], 512, 500) = 0
[pid    20] gettimeofday({1491278991, 868792}, NULL) = 0
[pid    20] epoll_wait(19,  <unfinished ...>
[pid    21] <... epoll_wait resumed> [], 512, 500) = 0
[pid    21] gettimeofday({1491278991, 927383}, NULL) = 0
[pid    21] epoll_wait(21,  <unfinished ...>
[pid    22] <... epoll_wait resumed> [], 512, 500) = 0
[pid    22] gettimeofday({1491278991, 934513}, NULL) = 0
[pid    22] epoll_wait(23,  <unfinished ...>
[pid    16] <... epoll_wait resumed> [], 512, 500) = 0
[pid    16] gettimeofday({1491278992, 195076}, NULL) = 0
[pid    16] epoll_wait(11,  <unfinished ...>
[pid    17] <... epoll_wait resumed> [], 512, 500) = 0
[pid    17] gettimeofday({1491278992, 259819}, NULL) = 0
[pid    17] epoll_wait(13,  <unfinished ...>
[pid    18] <... epoll_wait resumed> [], 512, 500) = 0
[pid    18] gettimeofday({1491278992, 278207}, NULL) = 0
[pid    18] epoll_wait(15,  <unfinished ...>
[pid    19] <... epoll_wait resumed> [], 512, 500) = 0
[pid    19] gettimeofday({1491278992, 352821}, NULL) = 0
[pid    19] epoll_wait(17,  <unfinished ...>
[pid    20] <... epoll_wait resumed> [], 512, 500) = 0
[pid    20] gettimeofday({1491278992, 375160}, NULL) = 0
[pid    20] epoll_wait(19,  <unfinished ...>
[pid    21] <... epoll_wait resumed> [], 512, 500) = 0
[pid    21] gettimeofday({1491278992, 431266}, NULL) = 0
[pid    21] epoll_wait(21,  <unfinished ...>
[pid    22] <... epoll_wait resumed> [], 512, 500) = 0
[pid    22] gettimeofday({1491278992, 454951}, NULL) = 0
[pid    22] epoll_wait(23,  <unfinished ...>
[pid    16] <... epoll_wait resumed> [], 512, 500) = 0
[pid    16] gettimeofday({1491278992, 719744}, NULL) = 0
[pid    16] epoll_wait(11,  <unfinished ...>
[pid    17] <... epoll_wait resumed> [], 512, 500) = 0
[pid    18] <... epoll_wait resumed> [], 512, 500) = 0
[pid    17] gettimeofday({1491278992, 791845}, NULL) = 0
[pid    17] epoll_wait(13,  <unfinished ...>
[pid    18] gettimeofday({1491278992, 849488}, NULL) = 0
[pid    18] epoll_wait(15,  <unfinished ...>
[pid    19] <... epoll_wait resumed> [], 512, 500) = 0
[pid    19] gettimeofday({1491278992, 897330}, NULL) = 0
[pid    20] <... epoll_wait resumed> [], 512, 500) = 0
[pid    19] epoll_wait(17,  <unfinished ...>
[pid    20] gettimeofday( <unfinished ...>
[pid    21] <... epoll_wait resumed> [], 512, 500) = 0
[pid    20] <... gettimeofday resumed> {1491278992, 954986}, NULL) = 0
[pid    20] epoll_wait(19,  <unfinished ...>
[pid    21] gettimeofday({1491278992, 962064}, NULL) = 0
[pid    21] epoll_wait(21,  <unfinished ...>
[pid    22] <... epoll_wait resumed> [], 512, 500) = 0
[pid    22] gettimeofday({1491278992, 963844}, NULL) = 0
[pid    22] epoll_wait(23,  <unfinished ...>
[pid    16] <... epoll_wait resumed> [], 512, 500) = 0
[pid    16] gettimeofday({1491278993, 227519}, NULL) = 0
[pid    16] epoll_wait(11,  <unfinished ...>
[pid    17] <... epoll_wait resumed> [], 512, 500) = 0
[pid    17] gettimeofday({1491278993, 355562}, NULL) = 0
[pid    17] epoll_wait(13,  <unfinished ...>
[pid    18] <... epoll_wait resumed> [], 512, 500) = 0
[pid    18] gettimeofday({1491278993, 407077}, NULL) = 0
[pid    18] epoll_wait(15,  <unfinished ...>
[pid    19] <... epoll_wait resumed> [], 512, 500) = 0
[pid    19] gettimeofday({1491278993, 417115}, NULL) = 0
[pid    19] epoll_wait(17,  <unfinished ...>
[pid    20] <... epoll_wait resumed> [], 512, 500) = 0
[pid    21] <... epoll_wait resumed> [], 512, 500) = 0
[pid    20] gettimeofday( <unfinished ...>
[pid    21] gettimeofday( <unfinished ...>
[pid    20] <... gettimeofday resumed> {1491278993, 465909}, NULL) = 0
[pid    21] <... gettimeofday resumed> {1491278993, 470990}, NULL) = 0
[pid    20] epoll_wait(19,  <unfinished ...>
[pid    21] epoll_wait(21,  <unfinished ...>
[pid    22] <... epoll_wait resumed> [], 512, 500) = 0
[pid    22] gettimeofday({1491278993, 476122}, NULL) = 0
[pid    22] epoll_wait(23,  <unfinished ...>
[pid    16] <... epoll_wait resumed> [], 512, 500) = 0
[pid    16] gettimeofday({1491278993, 729914}, NULL) = 0
[pid    16] epoll_wait(11,  <unfinished ...>
[pid    17] <... epoll_wait resumed> [], 512, 500) = 0
[pid    17] gettimeofday({1491278993, 859653}, NULL) = 0
[pid    17] epoll_wait(13,  <unfinished ...>
[pid    18] <... epoll_wait resumed> [], 512, 500) = 0
[pid    18] gettimeofday({1491278993, 916687}, NULL) = 0
[pid    18] epoll_wait(15,  <unfinished ...>
[pid    19] <... epoll_wait resumed> [], 512, 500) = 0
[pid    19] gettimeofday({1491278993, 919980}, NULL) = 0
[pid    19] epoll_wait(17,  <unfinished ...>
[pid    20] <... epoll_wait resumed> [], 512, 500) = 0
[pid    21] <... epoll_wait resumed> [], 512, 500) = 0
[pid    20] gettimeofday( <unfinished ...>
[pid    21] gettimeofday( <unfinished ...>
[pid    20] <... gettimeofday resumed> {1491278993, 977673}, NULL) = 0
[pid    21] <... gettimeofday resumed> {1491278993, 978529}, NULL) = 0
[pid    20] epoll_wait(19,  <unfinished ...>
[pid    21] epoll_wait(21,  <unfinished ...>
[pid    22] <... epoll_wait resumed> [], 512, 500) = 0
[pid    22] gettimeofday({1491278993, 983878}, NULL) = 0
[pid    22] epoll_wait(23,  <unfinished ...>
[pid    16] <... epoll_wait resumed> [], 512, 500) = 0
[pid    16] gettimeofday({1491278994, 235898}, NULL) = 0
[pid    16] epoll_wait(11,  <unfinished ...>
[pid    17] <... epoll_wait resumed> [], 512, 500) = 0
[pid    17] gettimeofday({1491278994, 366078}, NULL) = 0
[pid    17] epoll_wait(13,  <unfinished ...>
[pid    18] <... epoll_wait resumed> [], 512, 500) = 0
[pid    18] gettimeofday({1491278994, 432403}, NULL) = 0
[pid    19] <... epoll_wait resumed> [], 512, 500) = 0
[pid    18] epoll_wait(15,  <unfinished ...>
[pid    19] gettimeofday({1491278994, 438218}, NULL) = 0
[pid    19] epoll_wait(17,  <unfinished ...>
[pid    20] <... epoll_wait resumed> [], 512, 500) = 0
[pid    20] gettimeofday( <unfinished ...>
[pid    21] <... epoll_wait resumed> [], 512, 500) = 0
[pid    20] <... gettimeofday resumed> {1491278994, 489059}, NULL) = 0
[pid    21] gettimeofday( <unfinished ...>
[pid    20] epoll_wait(19,  <unfinished ...>
[pid    21] <... gettimeofday resumed> {1491278994, 492082}, NULL) = 0
[pid    22] <... epoll_wait resumed> [], 512, 500) = 0
[pid    21] epoll_wait(21,  <unfinished ...>
[pid    22] gettimeofday({1491278994, 496194}, NULL) = 0
[pid    22] epoll_wait(23,  <unfinished ...>
[pid    16] <... epoll_wait resumed> [], 512, 500) = 0
[pid    16] gettimeofday({1491278994, 744121}, NULL) = 0
[pid    16] epoll_wait(11,  <unfinished ...>
[pid    17] <... epoll_wait resumed> [], 512, 500) = 0
[pid    17] gettimeofday({1491278994, 883176}, NULL) = 0
[pid    17] epoll_wait(13,  <unfinished ...>
[pid    18] <... epoll_wait resumed> [], 512, 500) = 0
[pid    18] gettimeofday({1491278994, 936782}, NULL) = 0
[pid    18] epoll_wait(15,  <unfinished ...>
[pid    19] <... epoll_wait resumed> [], 512, 500) = 0
[pid    19] gettimeofday({1491278994, 953215}, NULL) = 0
[pid    19] epoll_wait(17,  <unfinished ...>
[pid    20] <... epoll_wait resumed> [], 512, 500) = 0
[pid    20] gettimeofday( <unfinished ...>
[pid    21] <... epoll_wait resumed> [], 512, 500) = 0
[pid    20] <... gettimeofday resumed> {1491278994, 996352}, NULL) = 0
[pid    21] gettimeofday( <unfinished ...>
[pid    20] epoll_wait(19,  <unfinished ...>
[pid    21] <... gettimeofday resumed> {1491278995, 614}, NULL) = 0
[pid    22] <... epoll_wait resumed> [], 512, 500) = 0
[pid    21] epoll_wait(21,  <unfinished ...>
[pid    22] gettimeofday({1491278995, 8067}, NULL) = 0
[pid    22] epoll_wait(23,  <unfinished ...>
[pid    16] <... epoll_wait resumed> [], 512, 500) = 0
[pid    16] gettimeofday({1491278995, 246826}, NULL) = 0
[pid    16] epoll_wait(11,  <unfinished ...>
[pid    17] <... epoll_wait resumed> [], 512, 500) = 0
[pid    17] gettimeofday({1491278995, 387514}, NULL) = 0
[pid    17] epoll_wait(13,  <unfinished ...>
[pid    18] <... epoll_wait resumed> [], 512, 500) = 0
[pid    18] gettimeofday({1491278995, 440235}, NULL) = 0
[pid    18] epoll_wait(15,  <unfinished ...>
[pid    19] <... epoll_wait resumed> [], 512, 500) = 0
[pid    19] gettimeofday({1491278995, 457476}, NULL) = 0
[pid    19] epoll_wait(17,  <unfinished ...>
[pid    20] <... epoll_wait resumed> [], 512, 500) = 0
[pid    20] gettimeofday({1491278995, 504320}, NULL) = 0
[pid    21] <... epoll_wait resumed> [], 512, 500) = 0
[pid    20] epoll_wait(19,  <unfinished ...>
[pid    21] gettimeofday({1491278995, 515295}, NULL) = 0
[pid    22] <... epoll_wait resumed> [], 512, 500) = 0
[pid    21] epoll_wait(21,  <unfinished ...>
[pid    22] gettimeofday({1491278995, 523169}, NULL) = 0
[pid    22] epoll_wait(23,  <unfinished ...>
[pid    16] <... epoll_wait resumed> [], 512, 500) = 0
[pid    16] gettimeofday({1491278995, 753271}, NULL) = 0
[pid    16] epoll_wait(11,  <unfinished ...>
[pid    17] <... epoll_wait resumed> [], 512, 500) = 0
[pid    17] gettimeofday({1491278995, 890735}, NULL) = 0
[pid    17] epoll_wait(13,  <unfinished ...>
[pid    18] <... epoll_wait resumed> [], 512, 500) = 0
[pid    18] gettimeofday({1491278995, 945009}, NULL) = 0
[pid    18] epoll_wait(15,  <unfinished ...>
[pid    19] <... epoll_wait resumed> [], 512, 500) = 0
[pid    19] gettimeofday({1491278995, 965815}, NULL) = 0
[pid    19] epoll_wait(17,  <unfinished ...>
[pid    20] <... epoll_wait resumed> [], 512, 500) = 0
[pid    20] gettimeofday({1491278996, 18080}, NULL) = 0
[pid    20] epoll_wait(19,  <unfinished ...>
[pid    21] <... epoll_wait resumed> [], 512, 500) = 0
[pid    21] gettimeofday({1491278996, 23630}, NULL) = 0
[pid    22] <... epoll_wait resumed> [], 512, 500) = 0
[pid    21] epoll_wait(21,  <unfinished ...>
[pid    22] gettimeofday({1491278996, 27631}, NULL) = 0
[pid    22] epoll_wait(23,  <unfinished ...>
[pid    16] <... epoll_wait resumed> [], 512, 500) = 0
[pid    16] gettimeofday({1491278996, 257269}, NULL) = 0
[pid    16] epoll_wait(11,  <unfinished ...>
[pid    17] <... epoll_wait resumed> [], 512, 500) = 0
[pid    17] gettimeofday({1491278996, 395068}, NULL) = 0
[pid    17] epoll_wait(13,  <unfinished ...>
[pid    18] <... epoll_wait resumed> [], 512, 500) = 0
[pid    18] gettimeofday({1491278996, 449228}, NULL) = 0
[pid    18] epoll_wait(15,  <unfinished ...>
[pid    19] <... epoll_wait resumed> [], 512, 500) = 0
[pid    19] gettimeofday({1491278996, 471071}, NULL) = 0
[pid    19] epoll_wait(17,  <unfinished ...>
[pid    20] <... epoll_wait resumed> [], 512, 500) = 0
[pid    20] gettimeofday({1491278996, 523138}, NULL) = 0
[pid    20] epoll_wait(19,  <unfinished ...>
[pid    21] <... epoll_wait resumed> [], 512, 500) = 0
[pid    22] <... epoll_wait resumed> [], 512, 500) = 0
[pid    21] gettimeofday( <unfinished ...>
[pid    22] gettimeofday( <unfinished ...>
[pid    21] <... gettimeofday resumed> {1491278996, 541212}, NULL) = 0
[pid    22] <... gettimeofday resumed> {1491278996, 544451}, NULL) = 0
[pid    21] epoll_wait(21,  <unfinished ...>
[pid    22] epoll_wait(23,  <unfinished ...>
[pid    16] <... epoll_wait resumed> [], 512, 500) = 0
[pid    16] gettimeofday({1491278996, 760475}, NULL) = 0
[pid    16] epoll_wait(11,  <unfinished ...>
[pid    17] <... epoll_wait resumed> [], 512, 500) = 0
[pid    17] gettimeofday({1491278996, 897625}, NULL) = 0
[pid    17] epoll_wait(13,  <unfinished ...>
[pid    18] <... epoll_wait resumed> [], 512, 500) = 0
[pid    18] gettimeofday({1491278996, 953985}, NULL) = 0
[pid    18] epoll_wait(15,  <unfinished ...>
[pid    19] <... epoll_wait resumed> [], 512, 500) = 0
[pid    19] gettimeofday({1491278996, 975196}, NULL) = 0
[pid    19] epoll_wait(17,  <unfinished ...>
[pid    20] <... epoll_wait resumed> [], 512, 500) = 0
[pid    20] gettimeofday({1491278997, 27360}, NULL) = 0
[pid    20] epoll_wait(19,  <unfinished ...>
[pid    21] <... epoll_wait resumed> [], 512, 500) = 0
[pid    21] gettimeofday({1491278997, 56881}, NULL) = 0
[pid    21] epoll_wait(21,  <unfinished ...>
[pid    22] <... epoll_wait resumed> [], 512, 500) = 0
[pid    22] gettimeofday({1491278997, 62094}, NULL) = 0
[pid    22] epoll_wait(23,  <unfinished ...>
[pid    16] <... epoll_wait resumed> [], 512, 500) = 0
[pid    16] gettimeofday({1491278997, 266029}, NULL) = 0
[pid    16] epoll_wait(11,  <unfinished ...>
[pid    17] <... epoll_wait resumed> [], 512, 500) = 0
[pid    17] gettimeofday({1491278997, 400561}, NULL) = 0
[pid    17] epoll_wait(13,  <unfinished ...>
[pid    18] <... epoll_wait resumed> [], 512, 500) = 0
[pid    18] gettimeofday({1491278997, 458241}, NULL) = 0
[pid    18] epoll_wait(15,  <unfinished ...>
[pid    19] <... epoll_wait resumed> [], 512, 500) = 0
[pid    19] gettimeofday({1491278997, 477837}, NULL) = 0
[pid    19] epoll_wait(17,  <unfinished ...>
[pid    20] <... epoll_wait resumed> [], 512, 500) = 0
[pid    20] gettimeofday({1491278997, 537963}, NULL) = 0
[pid    20] epoll_wait(19,  <unfinished ...>
[pid    21] <... epoll_wait resumed> [], 512, 500) = 0
[pid    21] gettimeofday( <unfinished ...>
[pid    22] <... epoll_wait resumed> [], 512, 500) = 0
[pid    21] <... gettimeofday resumed> {1491278997, 565240}, NULL) = 0
[pid    21] epoll_wait(21,  <unfinished ...>
[pid    22] gettimeofday({1491278997, 585283}, NULL) = 0
[pid    22] epoll_wait(23,  <unfinished ...>
[pid    16] <... epoll_wait resumed> [], 512, 500) = 0
[pid    16] gettimeofday({1491278997, 770438}, NULL) = 0
[pid    16] epoll_wait(11,  <unfinished ...>
[pid    17] <... epoll_wait resumed> [], 512, 500) = 0
[pid    17] gettimeofday({1491278997, 903412}, NULL) = 0
[pid    17] epoll_wait(13,  <unfinished ...>
[pid    18] <... epoll_wait resumed> [], 512, 500) = 0
[pid    18] gettimeofday({1491278997, 961562}, NULL) = 0
[pid    18] epoll_wait(15,  <unfinished ...>
[pid    19] <... epoll_wait resumed> [], 512, 500) = 0
[pid    19] gettimeofday({1491278997, 981523}, NULL) = 0
[pid    19] epoll_wait(17,  <unfinished ...>
[pid    20] <... epoll_wait resumed> [], 512, 500) = 0
[pid    20] gettimeofday({1491278998, 42202}, NULL) = 0
[pid    20] epoll_wait(19,  <unfinished ...>
[pid    21] <... epoll_wait resumed> [], 512, 500) = 0
[pid    21] gettimeofday({1491278998, 81102}, NULL) = 0
[pid    21] epoll_wait(21,  <unfinished ...>
[pid    22] <... epoll_wait resumed> [], 512, 500) = 0
[pid    22] gettimeofday({1491278998, 102792}, NULL) = 0
[pid    22] epoll_wait(23,  <unfinished ...>
[pid    16] <... epoll_wait resumed> [], 512, 500) = 0
[pid    16] gettimeofday({1491278998, 273817}, NULL) = 0
[pid    16] epoll_wait(11,  <unfinished ...>
[pid    17] <... epoll_wait resumed> [], 512, 500) = 0
[pid    17] gettimeofday({1491278998, 409172}, NULL) = 0
[pid    17] epoll_wait(13,  <unfinished ...>
[pid    18] <... epoll_wait resumed> [], 512, 500) = 0
[pid    18] gettimeofday({1491278998, 465814}, NULL) = 0
[pid    18] epoll_wait(15,  <unfinished ...>
[pid    19] <... epoll_wait resumed> [], 512, 500) = 0
[pid    19] gettimeofday({1491278998, 486739}, NULL) = 0
[pid    19] epoll_wait(17,  <unfinished ...>
[pid    20] <... epoll_wait resumed> [], 512, 500) = 0
[pid    20] gettimeofday({1491278998, 551372}, NULL) = 0
[pid    20] epoll_wait(19,  <unfinished ...>
[pid    21] <... epoll_wait resumed> [], 512, 500) = 0
[pid    21] gettimeofday({1491278998, 592768}, NULL) = 0
[pid    21] epoll_wait(21,  <unfinished ...>
[pid    22] <... epoll_wait resumed> [], 512, 500) = 0
[pid    22] gettimeofday({1491278998, 606937}, NULL) = 0
[pid    22] epoll_wait(23,  <unfinished ...>
[pid    16] <... epoll_wait resumed> [], 512, 500) = 0
[pid    16] gettimeofday({1491278998, 778218}, NULL) = 0
[pid    16] epoll_wait(11,  <unfinished ...>
[pid    17] <... epoll_wait resumed> [], 512, 500) = 0
[pid    17] gettimeofday({1491278998, 912038}, NULL) = 0
[pid    17] epoll_wait(13,  <unfinished ...>
[pid    18] <... epoll_wait resumed> [], 512, 500) = 0
[pid    18] gettimeofday({1491278998, 969919}, NULL) = 0
[pid    18] epoll_wait(15,  <unfinished ...>
[pid    19] <... epoll_wait resumed> [], 512, 500) = 0
[pid    19] gettimeofday({1491278998, 990291}, NULL) = 0
[pid    19] epoll_wait(17,  <unfinished ...>
[pid    20] <... epoll_wait resumed> [], 512, 500) = 0
[pid    20] gettimeofday({1491278999, 60896}, NULL) = 0
[pid    20] epoll_wait(19,  <unfinished ...>
[pid    21] <... epoll_wait resumed> [], 512, 500) = 0
[pid    21] gettimeofday({1491278999, 96610}, NULL) = 0
[pid    21] epoll_wait(21,  <unfinished ...>
[pid    22] <... epoll_wait resumed> [], 512, 500) = 0
[pid    22] gettimeofday({1491278999, 110166}, NULL) = 0
[pid    22] epoll_wait(23,  <unfinished ...>
[pid    16] <... epoll_wait resumed> [], 512, 500) = 0
[pid    16] gettimeofday({1491278999, 282267}, NULL) = 0
[pid    16] epoll_wait(11,  <unfinished ...>
[pid    17] <... epoll_wait resumed> [], 512, 500) = 0
[pid    17] gettimeofday({1491278999, 418784}, NULL) = 0
[pid    17] epoll_wait(13,  <unfinished ...>
[pid    18] <... epoll_wait resumed> [], 512, 500) = 0
[pid    18] gettimeofday({1491278999, 473537}, NULL) = 0
[pid    18] epoll_wait(15,  <unfinished ...>
[pid    19] <... epoll_wait resumed> [], 512, 500) = 0
[pid    19] gettimeofday({1491278999, 493998}, NULL) = 0
[pid    19] epoll_wait(17,  <unfinished ...>
[pid    20] <... epoll_wait resumed> [], 512, 500) = 0
[pid    20] gettimeofday({1491278999, 568220}, NULL) = 0
[pid    20] epoll_wait(19,  <unfinished ...>
[pid    21] <... epoll_wait resumed> [], 512, 500) = 0
[pid    21] gettimeofday({1491278999, 602664}, NULL) = 0
[pid    21] epoll_wait(21,  <unfinished ...>
[pid    22] <... epoll_wait resumed> [], 512, 500) = 0
[pid    22] gettimeofday({1491278999, 612840}, NULL) = 0
[pid    22] epoll_wait(23,  <unfinished ...>
[pid    16] <... epoll_wait resumed> [], 512, 500) = 0

@aseering @sunilmut the firwall is close,and this is the log for nginx,can you find some useful info

Hm...  Well, here's the bit of the strace where nginx connects to the socket:
socket(PF_INET, SOCK_STREAM, IPPROTO_IP) = 6
setsockopt(6, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0
ioctl(6, FIONBIO, [1]) = 0
bind(6, {sa_family=AF_INET, sin_port=htons(80), sin_addr=inet_addr("<IP_ADDRESS>")}, 16) = 0
listen(6, 511) = 0
socket(PF_INET6, SOCK_STREAM, IPPROTO_IP) = 7
setsockopt(7, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0
setsockopt(7, SOL_IPV6, IPV6_V6ONLY, [1], 4) = 0
ioctl(7, FIONBIO, [1]) = 0
bind(7, {sa_family=AF_INET6, sin6_port=htons(80), inet_pton(AF_INET6, "::", &sin6_addr), sin6_flowinfo=0, sin6_scope_id=0}, 28) = 0
listen(7, 511) = 0
listen(6, 511) = 0
listen(7, 511) = 0

So, nginx is binding to <IP_ADDRESS>.  Is it possible that this is somehow related to #521 ?  Does it work any better if you configure nginx to listen on a specific IP address (for example,<IP_ADDRESS>)?

@aseering socket(PF_INET, SOCK_STREAM, IPPROTO_IP) = 6
setsockopt(6, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0
ioctl(6, FIONBIO, [1])                  = 0
bind(6, {sa_family=AF_INET, sin_port=htons(80), sin_addr=inet_addr("<IP_ADDRESS>")}, 16) = 0
listen(6, 511)                          = 0
listen(6, 511)                          = 0
getrlimit(RLIMIT_NOFILE, {rlim_cur=21024, rlim_max=21024}) = 0
mmap(NULL, 1280, PROT_READ|PROT_WRITE, MAP_SHARED|MAP_ANONYMOUS, -1, 0) = 0x7f1d99428000
rt_sigaction(SIGHUP, {0x7f1d99649eb0, [], SA_RESTORER, 0x7f1d98be1390}, NULL, 8) = 0
rt_sigaction(SIGUSR1, {0x7f1d99649eb0, [], SA_RESTORER, 0x7f1d98be1390}, NULL, 8) = 0
rt_sigaction(SIGWINCH, {0x7f1d99649eb0, [], SA_RESTORER, 0x7f1d98be1390}, NULL, 8) = 0
rt_sigaction(SIGTERM, {0x7f1d99649eb0, [], SA_RESTORER, 0x7f1d98be1390}, NULL, 8) = 0
rt_sigaction(SIGQUIT, {0x7f1d99649eb0, [], SA_RESTORER, 0x7f1d98be1390}, NULL, 8) = 0
rt_sigaction(SIGUSR2, {0x7f1d99649eb0, [], SA_RESTORER, 0x7f1d98be1390}, NULL, 8) = 0
rt_sigaction(SIGALRM, {0x7f1d99649eb0, [], SA_RESTORER, 0x7f1d98be1390}, NULL, 8) = 0
rt_sigaction(SIGINT, {0x7f1d99649eb0, [], SA_RESTORER, 0x7f1d98be1390}, NULL, 8) = 0
rt_sigaction(SIGIO, {0x7f1d99649eb0, [], SA_RESTORER, 0x7f1d98be1390}, NULL, 8) = 0
rt_sigaction(SIGCHLD, {0x7f1d99649eb0, [], SA_RESTORER, 0x7f1d98be1390}, NULL, 8) = 0
rt_sigaction(SIGSYS, {SIG_IGN, [], SA_RESTORER, 0x7f1d98be1390}, NULL, 8) = 0
rt_sigaction(SIGPIPE, {SIG_IGN, [], SA_RESTORER, 0x7f1d98be1390}, NULL, 8) = 0
open("/run/nginx.pid", O_RDWR|O_CREAT|O_TRUNC, 0644) = 7
pwrite64(7, "100\n", 4, 0)              = 4
close(7)                                = 0
dup2(5, 2)                              = 2
close(3)                                = 0
rt_sigprocmask(SIG_BLOCK, [HUP INT QUIT USR1 USR2 ALRM TERM CHLD WINCH IO], NULL, 8) = 0
socketpair(PF_LOCAL, SOCK_STREAM, 0, [3, 7]) = 0
ioctl(3, FIONBIO, [1])                  = 0
ioctl(7, FIONBIO, [1])                  = 0
ioctl(3, FIOASYNC, [1])                 = 0
fcntl(3, F_SETOWN, 100)                 = 0
fcntl(3, F_SETFD, FD_CLOEXEC)           = 0
fcntl(7, F_SETFD, FD_CLOEXEC)           = 0
clone(strace: Process 101 attached
child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x7f1d99320a10) = 101
[pid   101] set_robust_list(0x7f1d99320a20, 24 <unfinished ...>
[pid   100] socketpair(PF_LOCAL, SOCK_STREAM, 0 <unfinished ...>
[pid   101] <... set_robust_list resumed> ) = 0
[pid   100] <... socketpair resumed> , [8, 9]) = 0
[pid   101] geteuid( <unfinished ...>
[pid   100] ioctl(8, FIONBIO, [1] <unfinished ...>
[pid   101] <... geteuid resumed> )     = 0
[pid   100] <... ioctl resumed> )       = 0
[pid   101] setgid(33 <unfinished ...>
[pid   100] ioctl(9, FIONBIO, [1])      = 0
[pid   100] ioctl(8, FIOASYNC, [1])     = 0
[pid   101] <... setgid resumed> )      = 0
[pid   100] fcntl(8, F_SETOWN, 100 <unfinished ...>
[pid   101] open("/proc/sys/kernel/ngroups_max", O_RDONLY <unfinished ...>
[pid   100] <... fcntl resumed> )       = 0
[pid   101] <... open resumed> )        = 8
[pid   100] fcntl(8, F_SETFD, FD_CLOEXEC <unfinished ...>
[pid   101] read(8,  <unfinished ...>
[pid   100] <... fcntl resumed> )       = 0
[pid   101] <... read resumed> "65536\n", 31) = 6
[pid   100] fcntl(9, F_SETFD, FD_CLOEXEC) = 0
[pid   101] close(8 <unfinished ...>
[pid   100] clone( <unfinished ...>
[pid   101] <... close resumed> )       = 0
[pid   101] open("/etc/group", O_RDONLY|O_CLOEXEC) = 8
[pid   101] lseek(8, 0, SEEK_CUR)       = 0
[pid   101] fstat(8, {st_mode=S_IFREG|0644, st_size=707, ...}) = 0
[pid   101] mmap(NULL, 707, PROT_READ, MAP_SHARED, 8, 0) = 0x7f1d99427000
[pid   101] lseek(8, 707, SEEK_SET)     = 707
[pid   101] fstat(8, {st_mode=S_IFREG|0644, st_size=707, ...}) = 0
[pid   101] munmap(0x7f1d99427000, 707) = 0
[pid   101] close(8)                    = 0
[pid   101] setgroups(1, [33])          = 0
[pid   101] setuid(33)                  = 0
[pid   101] prctl(PR_SET_DUMPABLE, 1)   = 0
[pid   100] <... clone resumed> child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x7f1d99320a10) = 102
[pid   101] rt_sigprocmask(SIG_SETMASK, [],  <unfinished ...>
[pid   100] sendmsg(3, {msg_name(0)=NULL, msg_iov(1)=[{"\1\0\0\0\0\0\0\0f\0\0\0\0\0\0\0\1\0\0\0\0\0\0\0\10\0\0\0\0\0\0\0", 32}], msg_controllen=24, [{cmsg_len=20, cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, [8]}], msg_flags=0}, 0 <unfinished ...>
[pid   101] <... rt_sigprocmask resumed> NULL, 8) = 0
[pid   100] <... sendmsg resumed> )     = 32
[pid   101] epoll_create(384 <unfinished ...>
[pid   100] socketpair(PF_LOCAL, SOCK_STREAM, 0 <unfinished ...>
[pid   101] <... epoll_create resumed> ) = 8
[pid   100] <... socketpair resumed> , [10, 11]) = 0
[pid   101] eventfd2(0, 0 <unfinished ...>
[pid   100] ioctl(10, FIONBIO, [1] <unfinished ...>
[pid   101] <... eventfd2 resumed> )    = 9
[pid   100] <... ioctl resumed> )       = 0
[pid   101] epoll_ctl(8, EPOLL_CTL_ADD, 9, {EPOLLIN|EPOLLET, {u32=2576607904, u64=139765107387040}} <unfinished ...>
[pid   100] ioctl(11, FIONBIO, [1] <unfinished ...>
i disabled the ipv6 and bind to <IP_ADDRESS> ,but it is not work,the problem is the port open faild,

Hm...  Could you also post an strace of the telnet command that you use to try to connect?
We'll see what that strace says, but this really does feel to me like you have installed a firewall that's blocking these packets.  Is it possible that you have a third-party antivirus program installed?  (Those usually include firewalls that scan for and block some unknown and/or untrusted types of traffic.)  Or any other third-party Windows app that has anything to do with either networking or security?

@aseering execve("/usr/bin/telnet", ["telnet", "<IP_ADDRESS>", "80"], [/* 16 vars /]) = 0
brk(NULL)                               = 0x155f000
access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory)
mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fdc57800000
access("/etc/ld.so.preload", R_OK)      = -1 ENOENT (No such file or directory)
open("/etc/ld.so.cache", O_RDONLY|O_CLOEXEC) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=21493, ...}) = 0
mmap(NULL, 21493, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7fdc577fa000
close(3)                                = 0
access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory)
open("/usr/lib/x86_64-linux-gnu/libstdc++.so.6", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\3\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0 \235\10\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0644, st_size=1566440, ...}) = 0
mmap(NULL, 3675136, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7fdc57070000
mprotect(0x7fdc571e2000, 2097152, PROT_NONE) = 0
mmap(0x7fdc573e2000, 49152, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x172000) = 0x7fdc573e2000
mmap(0x7fdc573ee000, 13312, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7fdc573ee000
close(3)                                = 0
access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory)
open("/lib/x86_64-linux-gnu/libc.so.6", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\3\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0P\t\2\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=1864888, ...}) = 0
mmap(NULL, 3967392, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7fdc56ca0000
mprotect(0x7fdc56e5f000, 2097152, PROT_NONE) = 0
mmap(0x7fdc5705f000, 24576, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1bf000) = 0x7fdc5705f000
mmap(0x7fdc57065000, 14752, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7fdc57065000
close(3)                                = 0
access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory)
open("/lib/x86_64-linux-gnu/libm.so.6", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\3\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\0V\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0644, st_size=1088952, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fdc577f0000
mmap(NULL, 3178744, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7fdc56990000
mprotect(0x7fdc56a98000, 2093056, PROT_NONE) = 0
mmap(0x7fdc56c97000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x107000) = 0x7fdc56c97000
close(3)                                = 0
access("/etc/ld.so.nohwcap", F_OK)      = -1 ENOENT (No such file or directory)
open("/lib/x86_64-linux-gnu/libgcc_s.so.1", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0p\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0644, st_size=89696, ...}) = 0
mmap(NULL, 2185488, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7fdc56770000
mprotect(0x7fdc56786000, 2093056, PROT_NONE) = 0
mmap(0x7fdc56985000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x15000) = 0x7fdc56985000
close(3)                                = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fdc577e0000
mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fdc577d0000
arch_prctl(ARCH_SET_FS, 0x7fdc577d0740) = 0
mprotect(0x7fdc5705f000, 16384, PROT_READ) = 0
mprotect(0x7fdc56c97000, 4096, PROT_READ) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fdc577c0000
mprotect(0x7fdc573e2000, 40960, PROT_READ) = 0
mprotect(0x615000, 4096, PROT_READ)     = 0
mprotect(0x7fdc57625000, 4096, PROT_READ) = 0
munmap(0x7fdc577fa000, 21493)           = 0
brk(NULL)                               = 0x155f000
brk(0x1591000)                          = 0x1591000
rt_sigaction(SIGTSTP, {0x40c4b0, [TSTP], SA_RESTORER|SA_RESTART, 0x7fdc56cd54b0}, {SIG_DFL, [], SA_RESTORER, 0x7f8b0b6254b0}, 8) = 0
ioctl(0, TCGETS, {B38400 opost isig icanon echo ...}) = 0
rt_sigprocmask(SIG_BLOCK, NULL, [], 8)  = 0
fstat(1, {st_mode=S_IFCHR|0660, st_rdev=makedev(4, 2), ...}) = 0
ioctl(1, TCGETS, {B38400 opost isig icanon echo ...}) = 0
write(1, "Trying <IP_ADDRESS>...\n", 20Trying <IP_ADDRESS>...
)   = 20
close(-1)                               = -1 EBADF (Bad file descriptor)
socket(PF_INET, SOCK_STREAM, IPPROTO_IP) = 3
setsockopt(3, SOL_IP, IP_TOS, [16], 4)  = 0
connect(3, {sa_family=AF_INET, sin_port=htons(80), sin_addr=inet_addr("<IP_ADDRESS>")}, 16) = -1 ECONNREFUSED (Connection refused)
dup(2)                                  = 4
fcntl(4, F_GETFL)                       = 0x2 (flags O_RDWR)
fstat(4, {st_mode=S_IFCHR|0660, st_rdev=makedev(4, 2), ...}) = 0
ioctl(4, TCGETS, {B38400 opost isig icanon echo ...}) = 0
write(4, "telnet: Unable to connect to rem"..., 61telnet: Unable to connect to remote host: Connection refused
) = 61
close(4)                                = 0
close(3)                                = 0
exit_group(1)                           = ?
+++ exited with 1 +++
1.i'm not install any  third-party antivirus program,even i disabled the windows defender,
2.i lookup for the process and the services ,not found some firewall process
3.just bash program can't open port,other windows program can work well

Ok, based on that trace, I think it's very likely that you do in fact have some sort of third-party program (if not firewall or antivirus, maybe a network driver?) that is interfering with bash's network connectivity.  I can't tell you which program from this trace, though.
Note that the problem with firewalls and similar programs is not that they might block connections on port 80.  (That's also the case, but it's easy to fix.)  The real problem with that sort of program is that most of them are implemented by injecting themselves into the Windows network stack, so that they can intercept packets.  If they don't implement support for Linux sockets, then those sockets will simply error out, which is what you're seeing here.
Some other programs also inject themselves into the Windows network stack.  I don't know if there's a way in Windows to enumerate all loaded drivers that touch the network stack?  It's not a process so you won't see it in the process list (though you may see the process that loaded it).  If not a literal device driver, maybe you have some kind of nonstandard VPN client that works this way?, or maybe your machine has acquired some adware that's trying to sniff your network traffic by intercepting it with a bash-incompatible driver?  Are you running stock vanilla Windows, or Windows as provided by your PC vendor or by your company?  Maybe a third-party program that came bundled with your PC is doing something relevant?
Anyway, I'm afraid I'm at a loss...  I'm pretty confident that this is what's happening, but I don't know how to be more specific.

@aseering - Thanks for all your support to this community. Invaluable!
@zuohl - Apologize for the delay. Can you do this simple test (took from @aseering post) and dump the output of the netstat command?
$ mkdir tmp
$ cd tmp
$ python -m SimpleHTTPServer
From a windows cmd prompt
>netstat -a | findstr 8000

Same question.
All things work well in 1607. After upgrade to 1703 and Ubuntu 16.04, open port not working.
run test provided by @sunilmut , there is no output after running netstat -a | findstr 8000 in windows cmd.

same for me, i am 1703, ubuntu 16.04

Same issue here on public build 15063.138
Insider was previously working, but after updating to build 16176 the issue appeared.

may be it causeed by the finddle, @aseering @hansnow

same for me.can not connect by any port.

@zuohl Do you mean 'Fiddler'? I didn't use it at all. After re-installing Win1703 using ISO file, all things work well.

I am using 1703 @ 15063.250, creators update. Same problem, I could see sshd.exe is running but port is not listening. I tried disable firewall or change another port, but not work. Is this a bug?

In my case the problem was the tcpipbm.sys file (Bytemobile Optimization Client file) installed by the GPRS modem software. After uninstalling, the ports open correctly.

On 1703 on my desktop, my ports aren't listening. I've tried reinstalling the Creators Update and Bash multiple times with no success. However, today, I finally updated to 1703 on my laptop and my ports do get opened and I can access my local servers. Not sure how to approach debugging this.

I have the same problem, nginx start successfully, but port 80 not listening, I can't access localhost via bash or browser in windows

@namiltd - I am looking to install the Bytemobile Optimization Client or any other software so that I can repro this locally. Do you (or anyone else) has a reliable link to the software?

https://ufile.io/6e0gw

Please try this on a more recent Insiders Build and reopen if you still hit this issue