...
mmap(NULL, 16384, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f421634a000
rt_sigprocmask(SIG_BLOCK, [CHLD], [WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD WINCH], 8) = 0
mmap(NULL, 16384, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4216346000
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD WINCH], 8) = 0
openat(AT_FDCWD, "/dev/null", O_WRONLY|O_CREAT|O_NOCTTY|O_TRUNC, 0666) = 3
fcntl(2, F_DUPFD, 10)                   = 11
close(2)                                = 0
dup2(3, 2)                              = 2
close(3)                                = 0
dup2(11, 2)                             = 2
close(11)                               = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [WINCH], 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], [CHLD WINCH], 8) = 0
munmap(0x7f4216346000, 16384)           = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [WINCH], 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], [CHLD WINCH], 8) = 0
munmap(0x7f421634a000, 16384)           = 0
rt_sigprocmask(SIG_UNBLOCK, [WINCH], [WINCH], 8) = 0
poll([{fd=10, events=POLLIN}, {fd=11, events=0}], 2, -1) = 1 ([{fd=11, revents=POLLNVAL}])
rt_sigprocmask(SIG_BLOCK, [WINCH], [], 8) = 0
mmap(NULL, 16384, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f421634a000
rt_sigprocmask(SIG_BLOCK, [CHLD], [WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD WINCH], 8) = 0
mmap(NULL, 16384, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4216346000
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD WINCH], 8) = 0
openat(AT_FDCWD, "/dev/null", O_WRONLY|O_CREAT|O_NOCTTY|O_TRUNC, 0666) = 3
fcntl(2, F_DUPFD, 10)                   = 11
close(2)                                = 0
dup2(3, 2)                              = 2
close(3)                                = 0
dup2(11, 2)                             = 2
close(11)                               = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [WINCH], 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], [CHLD WINCH], 8) = 0
munmap(0x7f4216346000, 16384)           = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [WINCH], 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], [CHLD WINCH], 8) = 0
munmap(0x7f421634a000, 16384)           = 0
rt_sigprocmask(SIG_UNBLOCK, [WINCH], [WINCH], 8) = 0
poll([{fd=10, events=POLLIN}, {fd=11, events=0}], 2, -1) = 1 ([{fd=11, revents=POLLNVAL}])
rt_sigprocmask(SIG_BLOCK, [WINCH], [], 8) = 0
mmap(NULL, 16384, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f421634a000
rt_sigprocmask(SIG_BLOCK, [CHLD], [WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD WINCH], 8) = 0
mmap(NULL, 16384, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4216346000
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD WINCH], 8) = 0
openat(AT_FDCWD, "/dev/null", O_WRONLY|O_CREAT|O_NOCTTY|O_TRUNC, 0666) = 3
fcntl(2, F_DUPFD, 10)                   = 11
close(2)                                = 0
dup2(3, 2)                              = 2
close(3)                                = 0
dup2(11, 2)                             = 2
close(11)                               = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [WINCH], 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], [CHLD WINCH], 8) = 0
munmap(0x7f4216346000, 16384)           = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [WINCH], 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], [CHLD WINCH], 8) = 0
munmap(0x7f421634a000, 16384)           = 0
rt_sigprocmask(SIG_UNBLOCK, [WINCH], [WINCH], 8) = 0
poll([{fd=10, events=POLLIN}, {fd=11, events=0}], 2, -1) = 1 ([{fd=11, revents=POLLNVAL}])
rt_sigprocmask(SIG_BLOCK, [WINCH], [], 8) = 0
mmap(NULL, 16384, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f421634a000
rt_sigprocmask(SIG_BLOCK, [CHLD], [WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD WINCH], 8) = 0
mmap(NULL, 16384, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4216346000
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD WINCH], 8) = 0
openat(AT_FDCWD, "/dev/null", O_WRONLY|O_CREAT|O_NOCTTY|O_TRUNC, 0666) = 3
fcntl(2, F_DUPFD, 10)                   = 11
close(2)                                = 0
dup2(3, 2)                              = 2
close(3)                                = 0
dup2(11, 2)                             = 2
close(11)                               = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [WINCH], 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], [CHLD WINCH], 8) = 0
munmap(0x7f4216346000, 16384)           = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [WINCH], 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], [CHLD WINCH], 8) = 0
munmap(0x7f421634a000, 16384)           = 0
rt_sigprocmask(SIG_UNBLOCK, [WINCH], [WINCH], 8) = 0
poll([{fd=10, events=POLLIN}, {fd=11, events=0}], 2, -1) = 1 ([{fd=11, revents=POLLNVAL}])
rt_sigprocmask(SIG_BLOCK, [WINCH], [], 8) = 0
mmap(NULL, 16384, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f421634a000
rt_sigprocmask(SIG_BLOCK, [CHLD], [WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [WINCH], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD WINCH], 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [CHLD], [CHLD WINCH], 8) = 0