Attaching an strace as well, created via:
$ zsh -c "unlimit; strace screen 2> /tmp/screen-strace.txt"
It keeps busy looping around a poll().
execve("/usr/bin/screen", ["screen"], 0x7fffb31018a0 /* 41 vars */) = 0
brk(NULL) = 0x5639e1ba9000
mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x152dc0d42000
access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/etc/ld.so.cache", O_RDONLY|O_CLOEXEC) = 3
newfstatat(3, "", {st_mode=S_IFREG|0644, st_size=242055, ...}, AT_EMPTY_PATH) = 0
mmap(NULL, 242055, PROT_READ, MAP_PRIVATE, 3, 0) = 0x152dc0d06000
close(3) = 0
openat(AT_FDCWD, "/lib/x86_64-linux-gnu/libtinfo.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\0\0\0\0\0\0\0\0"...,
832) = 832
newfstatat(3, "", {st_mode=S_IFREG|0644, st_size=216368, ...}, AT_EMPTY_PATH) = 0
mmap(NULL, 215360, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x152dc0cd1000
mmap(0x152dc0ce0000, 77824, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0xf000) = 0x152dc0ce0000
mmap(0x152dc0cf3000, 57344, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3,
0x22000) = 0x152dc0cf3000
mmap(0x152dc0d01000, 20480, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x30000) = 0x152dc0d01000
close(3) = 0
openat(AT_FDCWD, "/lib/x86_64-linux-gnu/libutempter.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\0\0\0\0\0\0\0\0"...,
832) = 832
newfstatat(3, "", {st_mode=S_IFREG|0644, st_size=14256, ...}, AT_EMPTY_PATH) = 0
mmap(NULL, 16416, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x152dc0ccc000
mmap(0x152dc0ccd000, 4096, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1000) = 0x152dc0ccd000
mmap(0x152dc0cce000, 4096, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3,
0x2000) = 0x152dc0cce000
mmap(0x152dc0ccf000, 8192, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x2000) = 0x152dc0ccf000
close(3) = 0
openat(AT_FDCWD, "/lib/x86_64-linux-gnu/libcrypt.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\0"...,
832) = 832
newfstatat(3, "", {st_mode=S_IFREG|0644, st_size=206776, ...}, AT_EMPTY_PATH) = 0
mmap(NULL, 242344, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x152dc0c90000
mmap(0x152dc0c92000, 90112, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x2000) = 0x152dc0c92000
mmap(0x152dc0ca8000, 106496, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3,
0x18000) = 0x152dc0ca8000
mmap(0x152dc0cc2000, 8192, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x31000) = 0x152dc0cc2000
mmap(0x152dc0cc4000, 29352, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x152dc0cc4000
close(3) = 0
openat(AT_FDCWD, "/lib/x86_64-linux-gnu/libpam.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\0\0\0\0\0\0\0\0"...,
832) = 832
newfstatat(3, "", {st_mode=S_IFREG|0644, st_size=67584, ...}, AT_EMPTY_PATH) = 0
mmap(NULL, 69648, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x152dc0c7e000
mmap(0x152dc0c81000, 36864, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x3000) = 0x152dc0c81000
mmap(0x152dc0c8a000, 16384, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3,
0xc000) = 0x152dc0c8a000
mmap(0x152dc0c8e000, 8192, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0xf000) = 0x152dc0c8e000
close(3) = 0
openat(AT_FDCWD, "/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~\2\0\0\0\0\0"..., 832)
= 832
pread64(3, "\6\0\0\0\4\0\0\0@\0\0\0\0\0\0\0@\0\0\0\0\0\0\0@\0\0\0\0\0\0\0"...,
784, 64) = 784
newfstatat(3, "", {st_mode=S_IFREG|0755, st_size=1933688, ...}, AT_EMPTY_PATH)
= 0
pread64(3, "\6\0\0\0\4\0\0\0@\0\0\0\0\0\0\0@\0\0\0\0\0\0\0@\0\0\0\0\0\0\0"...,
784, 64) = 784
mmap(NULL, 1985936, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x152dc0a99000
mmap(0x152dc0abf000, 1404928, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x26000) = 0x152dc0abf000
mmap(0x152dc0c16000, 348160, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3,
0x17d000) = 0x152dc0c16000
mmap(0x152dc0c6b000, 24576, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1d1000) = 0x152dc0c6b000
mmap(0x152dc0c71000, 52624, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x152dc0c71000
close(3) = 0
openat(AT_FDCWD, "/lib/x86_64-linux-gnu/libaudit.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\0"...,
832) = 832
newfstatat(3, "", {st_mode=S_IFREG|0644, st_size=137144, ...}, AT_EMPTY_PATH) = 0
mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x152dc0a97000
mmap(NULL, 200912, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x152dc0a65000
mmap(0x152dc0a68000, 32768, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x3000) = 0x152dc0a68000
mmap(0x152dc0a70000, 86016, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3,
0xb000) = 0x152dc0a70000
mmap(0x152dc0a85000, 8192, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x20000) = 0x152dc0a85000
mmap(0x152dc0a87000, 61648, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x152dc0a87000
close(3) = 0
openat(AT_FDCWD, "/lib/x86_64-linux-gnu/libcap-ng.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\0\0\0\0\0\0\0\0"...,
832) = 832
newfstatat(3, "", {st_mode=S_IFREG|0644, st_size=30632, ...}, AT_EMPTY_PATH) = 0
mmap(NULL, 28720, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x152dc0a5d000
mmap(0x152dc0a5f000, 12288, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x2000) = 0x152dc0a5f000
mmap(0x152dc0a62000, 4096, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3,
0x5000) = 0x152dc0a62000
mmap(0x152dc0a63000, 8192, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x6000) = 0x152dc0a63000
close(3) = 0
mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x152dc0a5b000
arch_prctl(ARCH_SET_FS, 0x152dc0a5bbc0) = 0
set_tid_address(0x152dc0a5be90) = 1196747
set_robust_list(0x152dc0a5bea0, 24) = 0
rseq(0x152dc0a5c4e0, 0x20, 0, 0x53053053) = 0
mprotect(0x152dc0c6b000, 16384, PROT_READ) = 0
mprotect(0x152dc0a63000, 4096, PROT_READ) = 0
mprotect(0x152dc0a85000, 4096, PROT_READ) = 0
mprotect(0x152dc0c8e000, 4096, PROT_READ) = 0
mprotect(0x152dc0cc2000, 4096, PROT_READ) = 0
mprotect(0x152dc0ccf000, 4096, PROT_READ) = 0
mprotect(0x152dc0d01000, 16384, PROT_READ) = 0
mprotect(0x5639a8df3000, 4096, PROT_READ) = 0
mprotect(0x152dc0d7a000, 8192, PROT_READ) = 0
prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=RLIM64_INFINITY,
rlim_max=RLIM64_INFINITY}) = 0
munmap(0x152dc0d06000, 242055) = 0
openat(AT_FDCWD, "/proc/sys/kernel/cap_last_cap", O_RDONLY) = 3
fstatfs(3, {f_type=PROC_SUPER_MAGIC, f_bsize=4096, f_blocks=0, f_bfree=0,
f_bavail=0, f_files=0, f_ffree=0, f_fsid={val=[0x17, 0]}, f_namelen=255,
f_frsize=4096, f_flags=ST_VALID|ST_NOSUID|ST_NODEV|ST_NOEXEC|ST_RELATIME}) = 0
read(3, "40\n", 7) = 3
close(3) = 0
prctl(PR_CAPBSET_READ, CAP_CHOWN) = 1
prctl(PR_GET_SECUREBITS) = 0
prctl(PR_GET_NO_NEW_PRIVS, 0, 0, 0, 0) = 0
prctl(PR_CAP_AMBIENT, PR_CAP_AMBIENT_IS_SET, CAP_CHOWN, 0, 0) = 0
prlimit64(0, RLIMIT_NOFILE, NULL, {rlim_cur=1073741816, rlim_max=1073741816}) = 0
poll([{fd=3, events=0}, {fd=4, events=0}, {fd=5, events=0}, {fd=6, events=0},
{fd=7, events=0}, {fd=8, events=0}, {fd=9, events=0}, {fd=10, events=0},
{fd=11, events=0}, {fd=12, events=0}, {fd=13, events=0}, {fd=14, events=0},
{fd=15, events=0}, {fd=16, events=0}, {fd=17, events=0}, {fd=18, events=0},
{fd=19, events=0}, {fd=20, events=0}, {fd=21, events=0}, {fd=22, events=0},
{fd=23, events=0}, {fd=24, events=0}, {fd=25, events=0}, {fd=26, events=0},
{fd=27, events=0}, {fd=28, events=0}, {fd=29, events=0}, {fd=30, events=0},
{fd=31, events=0}, {fd=32, events=0}, {fd=33, events=0}, {fd=34, events=0},
...], 1024, 0) = 1024 ([{fd=3, revents=POLLNVAL}, {fd=4, revents=POLLNVAL},
{fd=5, revents=POLLNVAL}, {fd=6, revents=POLLNVAL}, {fd=7, revents=POLLNVAL},
{fd=8, revents=POLLNVAL}, {fd=9, revents=POLLNVAL}, {fd=10, revents=POLLNVAL},
{fd=11, revents=POLLNVAL}, {fd=12, revents=POLLNVAL}, {fd=13,
revents=POLLNVAL}, {fd=14, revents=POLLNVAL}, {fd=15, revents=POLLNVAL},
{fd=16, revents=POLLNVAL}, {fd=17, revents=POLLNVAL}, {fd=18,
revents=POLLNVAL}, {fd=19, revents=POLLNVAL}, {fd=20, revents=POLLNVAL},
{fd=21, revents=POLLNVAL}, {fd=22, revents=POLLNVAL}, {fd=23,
revents=POLLNVAL}, {fd=24, revents=POLLNVAL}, {fd=25, revents=POLLNVAL},
{fd=26, revents=POLLNVAL}, {fd=27, revents=POLLNVAL}, {fd=28,
revents=POLLNVAL}, {fd=29, revents=POLLNVAL}, {fd=30, revents=POLLNVAL},
{fd=31, revents=POLLNVAL}, {fd=32, revents=POLLNVAL}, {fd=33,
revents=POLLNVAL}, {fd=34, revents=POLLNVAL}, ...])
poll([{fd=1027, events=0}, {fd=1028, events=0}, {fd=1029, events=0}, {fd=1030,
events=0}, {fd=1031, events=0}, {fd=1032, events=0}, {fd=1033, events=0},
{fd=1034, events=0}, {fd=1035, events=0}, {fd=1036, events=0}, {fd=1037,
events=0}, {fd=1038, events=0}, {fd=1039, events=0}, {fd=1040, events=0},
{fd=1041, events=0}, {fd=1042, events=0}, {fd=1043, events=0}, {fd=1044,
events=0}, {fd=1045, events=0}, {fd=1046, events=0}, {fd=1047, events=0},
{fd=1048, events=0}, {fd=1049, events=0}, {fd=1050, events=0}, {fd=1051,
events=0}, {fd=1052, events=0}, {fd=1053, events=0}, {fd=1054, events=0},
{fd=1055, events=0}, {fd=1056, events=0}, {fd=1057, events=0}, {fd=1058,
events=0}, ...], 1024, 0) = 1024 ([{fd=1027, revents=POLLNVAL}, {fd=1028,
revents=POLLNVAL}, {fd=1029, revents=POLLNVAL}, {fd=1030, revents=POLLNVAL},
{fd=1031, revents=POLLNVAL}, {fd=1032, revents=POLLNVAL}, {fd=1033,
revents=POLLNVAL}, {fd=1034, revents=POLLNVAL}, {fd=1035, revents=POLLNVAL},
{fd=1036, revents=POLLNVAL}, {fd=1037, revents=POLLNVAL}, {fd=1038,
revents=POLLNVAL}, {fd=1039, revents=POLLNVAL}, {fd=1040, revents=POLLNVAL},
{fd=1041, revents=POLLNVAL}, {fd=1042, revents=POLLNVAL}, {fd=1043,
revents=POLLNVAL}, {fd=1044, revents=POLLNVAL}, {fd=1045, revents=POLLNVAL},
{fd=1046, revents=POLLNVAL}, {fd=1047, revents=POLLNVAL}, {fd=1048,
revents=POLLNVAL}, {fd=1049, revents=POLLNVAL}, {fd=1050, revents=POLLNVAL},
{fd=1051, revents=POLLNVAL}, {fd=1052, revents=POLLNVAL}, {fd=1053,
revents=POLLNVAL}, {fd=1054, revents=POLLNVAL}, {fd=1055, revents=POLLNVAL},
{fd=1056, revents=POLLNVAL}, {fd=1057, revents=POLLNVAL}, {fd=1058,
revents=POLLNVAL}, ...])
poll([{fd=2051, events=0}, {fd=2052, events=0}, {fd=2053, events=0}, {fd=2054,
events=0}, {fd=2055, events=0}, {fd=2056, events=0}, {fd=2057, events=0},
{fd=2058, events=0}, {fd=2059, events=0}, {fd=2060, events=0}, {fd=2061,
events=0}, {fd=2062, events=0}, {fd=2063, events=0}, {fd=2064, events=0},
{fd=2065, events=0}, {fd=2066, events=0}, {fd=2067, events=0}, {fd=2068,
events=0}, {fd=2069, events=0}, {fd=2070, events=0}, {fd=2071, events=0},
{fd=2072, events=0}, {fd=2073, events=0}, {fd=2074, events=0}, {fd=2075,
events=0}, {fd=2076, events=0}, {fd=2077, events=0}, {fd=2078, events=0},
{fd=2079, events=0}, {fd=2080, events=0}, {fd=2081, events=0}, {fd=2082,
events=0}, ...], 1024, 0) = 1024 ([{fd=2051, revents=POLLNVAL}, {fd=2052,
revents=POLLNVAL}, {fd=2053, revents=POLLNVAL}, {fd=2054, revents=POLLNVAL},
{fd=2055, revents=POLLNVAL}, {fd=2056, revents=POLLNVAL}, {fd=2057,
revents=POLLNVAL}, {fd=2058, revents=POLLNVAL}, {fd=2059, revents=POLLNVAL},
{fd=2060, revents=POLLNVAL}, {fd=2061, revents=POLLNVAL}, {fd=2062,
revents=POLLNVAL}, {fd=2063, revents=POLLNVAL}, {fd=2064, revents=POLLNVAL},
{fd=2065, revents=POLLNVAL}, {fd=2066, revents=POLLNVAL}, {fd=2067,
revents=POLLNVAL}, {fd=2068, revents=POLLNVAL}, {fd=2069, revents=POLLNVAL},
{fd=2070, revents=POLLNVAL}, {fd=2071, revents=POLLNVAL}, {fd=2072,
revents=POLLNVAL}, {fd=2073, revents=POLLNVAL}, {fd=2074, revents=POLLNVAL},
{fd=2075, revents=POLLNVAL}, {fd=2076, revents=POLLNVAL}, {fd=2077,
revents=POLLNVAL}, {fd=2078, revents=POLLNVAL}, {fd=2079, revents=POLLNVAL},
{fd=2080, revents=POLLNVAL}, {fd=2081, revents=POLLNVAL}, {fd=2082,
revents=POLLNVAL}, ...])
poll([{fd=3075, events=0}, {fd=3076, events=0}, {fd=3077, events=0}, {fd=3078,
events=0}, {fd=3079, events=0}, {fd=3080, events=0}, {fd=3081, events=0},
{fd=3082, events=0}, {fd=3083, events=0}, {fd=3084, events=0}, {fd=3085,
events=0}, {fd=3086, events=0}, {fd=3087, events=0}, {fd=3088, events=0},
{fd=3089, events=0}, {fd=3090, events=0}, {fd=3091, events=0}, {fd=3092,
events=0}, {fd=3093, events=0}, {fd=3094, events=0}, {fd=3095, events=0},
{fd=3096, events=0}, {fd=3097, events=0}, {fd=3098, events=0}, {fd=3099,
events=0}, {fd=3100, events=0}, {fd=3101, events=0}, {fd=3102, events=0},
{fd=3103, events=0}, {fd=3104, events=0}, {fd=3105, events=0}, {fd=3106,
events=0}, ...], 1024, 0) = 1024 ([{fd=3075, revents=POLLNVAL}, {fd=3076,
revents=POLLNVAL}, {fd=3077, revents=POLLNVAL}, {fd=3078, revents=POLLNVAL},
{fd=3079, revents=POLLNVAL}, {fd=3080, revents=POLLNVAL}, {fd=3081,
revents=POLLNVAL}, {fd=3082, revents=POLLNVAL}, {fd=3083, revents=POLLNVAL},
{fd=3084, revents=POLLNVAL}, {fd=3085, revents=POLLNVAL}, {fd=3086,
revents=POLLNVAL}, {fd=3087, revents=POLLNVAL}, {fd=3088, revents=POLLNVAL},
{fd=3089, revents=POLLNVAL}, {fd=3090, revents=POLLNVAL}, {fd=3091,
revents=POLLNVAL}, {fd=3092, revents=POLLNVAL}, {fd=3093, revents=POLLNVAL},
{fd=3094, revents=POLLNVAL}, {fd=3095, revents=POLLNVAL}, {fd=3096,
revents=POLLNVAL}, {fd=3097, revents=POLLNVAL}, {fd=3098, revents=POLLNVAL},
{fd=3099, revents=POLLNVAL}, {fd=3100, revents=POLLNVAL}, {fd=3101,
revents=POLLNVAL}, {fd=3102, revents=POLLNVAL}, {fd=3103, revents=POLLNVAL},
{fd=3104, revents=POLLNVAL}, {fd=3105, revents=POLLNVAL}, {fd=3106,
revents=POLLNVAL}, ...])
poll([{fd=4099, events=0}, {fd=4100, events=0}, {fd=4101, events=0}, {fd=4102,
events=0}, {fd=4103, events=0}, {fd=4104, events=0}, {fd=4105, events=0},
{fd=4106, events=0}, {fd=4107, events=0}, {fd=4108, events=0}, {fd=4109,
events=0}, {fd=4110, events=0}, {fd=4111, events=0}, {fd=4112, events=0},
{fd=4113, events=0}, {fd=4114, events=0}, {fd=4115, events=0}, {fd=4116,
events=0}, {fd=4117, events=0}, {fd=4118, events=0}, {fd=4119, events=0},
{fd=4120, events=0}, {fd=4121, events=0}, {fd=4122, events=0}, {fd=4123,
events=0}, {fd=4124, events=0}, {fd=4125, events=0}, {fd=4126, events=0},
{fd=4127, events=0}, {fd=4128, events=0}, {fd=4129, events=0}, {fd=4130,
events=0}, ...], 1024, 0) = 1024 ([{fd=4099, revents=POLLNVAL}, {fd=4100,
revents=POLLNVAL}, {fd=4101, revents=POLLNVAL}, {fd=4102, revents=POLLNVAL},
{fd=4103, revents=POLLNVAL}, {fd=4104, revents=POLLNVAL}, {fd=4105,
revents=POLLNVAL}, {fd=4106, revents=POLLNVAL}, {fd=4107, revents=POLLNVAL},
{fd=4108, revents=POLLNVAL}, {fd=4109, revents=POLLNVAL}, {fd=4110,
revents=POLLNVAL}, {fd=4111, revents=POLLNVAL}, {fd=4112, revents=POLLNVAL},
{fd=4113, revents=POLLNVAL}, {fd=4114, revents=POLLNVAL}, {fd=4115,
revents=POLLNVAL}, {fd=4116, revents=POLLNVAL}, {fd=4117, revents=POLLNVAL},
{fd=4118, revents=POLLNVAL}, {fd=4119, revents=POLLNVAL}, {fd=4120,
revents=POLLNVAL}, {fd=4121, revents=POLLNVAL}, {fd=4122, revents=POLLNVAL},
{fd=4123, revents=POLLNVAL}, {fd=4124, revents=POLLNVAL}, {fd=4125,
revents=POLLNVAL}, {fd=4126, revents=POLLNVAL}, {fd=4127, revents=POLLNVAL},
{fd=4128, revents=POLLNVAL}, {fd=4129, revents=POLLNVAL}, {fd=4130,
revents=POLLNVAL}, ...])
...
