output strace skypeforlinux

strace.out (text/plain), 16.17 KB, created by Didier Colle on 2019-08-04 19:48:28 UTC

execve("/usr/bin/skypeforlinux", ["skypeforlinux"], 0x7ffd4a58fd80 /* 57 vars */) = 0
brk(NULL)                               = 0x56334f3e1000
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
fstat(3, {st_mode=S_IFREG|0644, st_size=169996, ...}) = 0
mmap(NULL, 169996, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7f97c3d14000
close(3)                                = 0
openat(AT_FDCWD, "/lib64/libreadline.so.7", 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@x\1\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0555, st_size=317080, ...}) = 0
mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f97c3d12000
mmap(NULL, 324840, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f97c3cc2000
mprotect(0x7f97c3cd8000, 196608, PROT_NONE) = 0
mmap(0x7f97c3cd8000, 155648, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x16000) = 0x7f97c3cd8000
mmap(0x7f97c3cfe000, 36864, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x3c000) = 0x7f97c3cfe000
mmap(0x7f97c3d08000, 32768, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x45000) = 0x7f97c3d08000
mmap(0x7f97c3d10000, 5352, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f97c3d10000
close(3)                                = 0
openat(AT_FDCWD, "/lib64/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
fstat(3, {st_mode=S_IFREG|0755, st_size=1885656, ...}) = 0
mmap(NULL, 1898344, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f97c3af2000
mprotect(0x7f97c3b14000, 1720320, PROT_NONE) = 0
mmap(0x7f97c3b14000, 1417216, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x22000) = 0x7f97c3b14000
mmap(0x7f97c3c6e000, 299008, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x17c000) = 0x7f97c3c6e000
mmap(0x7f97c3cb8000, 24576, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1c5000) = 0x7f97c3cb8000
mmap(0x7f97c3cbe000, 14184, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f97c3cbe000
close(3)                                = 0
openat(AT_FDCWD, "/lib64/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\0p\374\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=234096, ...}) = 0
mmap(NULL, 237880, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f97c3ab7000
mmap(0x7f97c3ac6000, 94208, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0xf000) = 0x7f97c3ac6000
mmap(0x7f97c3add000, 61440, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x26000) = 0x7f97c3add000
mmap(0x7f97c3aec000, 20480, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x34000) = 0x7f97c3aec000
mmap(0x7f97c3af1000, 312, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f97c3af1000
close(3)                                = 0
mmap(NULL, 12288, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f97c3ab4000
arch_prctl(ARCH_SET_FS, 0x7f97c3ab4740) = 0
mprotect(0x7f97c3cb8000, 16384, PROT_READ) = 0
mprotect(0x7f97c3aec000, 16384, PROT_READ) = 0
mprotect(0x7f97c3d08000, 8192, PROT_READ) = 0
mprotect(0x56334f3cd000, 8192, PROT_READ) = 0
mprotect(0x7f97c3d65000, 4096, PROT_READ) = 0
munmap(0x7f97c3d14000, 169996)          = 0
openat(AT_FDCWD, "/dev/tty", O_RDWR|O_NONBLOCK) = 3
close(3)                                = 0
brk(NULL)                               = 0x56334f3e1000
brk(0x56334f402000)                     = 0x56334f402000
openat(AT_FDCWD, "/usr/lib64/locale/locale-archive", O_RDONLY|O_CLOEXEC) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=4554576, ...}) = 0
mmap(NULL, 4554576, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7f97c365c000
close(3)                                = 0
getuid()                                = 1000
getgid()                                = 1000
geteuid()                               = 1000
getegid()                               = 1000
rt_sigprocmask(SIG_BLOCK, NULL, [], 8)  = 0
ioctl(-1, TIOCGPGRP, 0x7ffd83d630b4)    = -1 EBADF (Bad file descriptor)
sysinfo({uptime=23700, loads=[99328, 98944, 84256], totalram=4029984768, freeram=1815252992, sharedram=251973632, bufferram=238538752, totalswap=34359734272, freeswap=34359734272, procs=450, totalhigh=0, freehigh=0, mem_unit=1}) = 0
rt_sigaction(SIGCHLD, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7f97c3b2b0d0}, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGCHLD, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7f97c3b2b0d0}, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7f97c3b2b0d0}, 8) = 0
rt_sigaction(SIGINT, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0x7f97c3b2b0d0}, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGINT, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0x7f97c3b2b0d0}, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0x7f97c3b2b0d0}, 8) = 0
rt_sigaction(SIGQUIT, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0x7f97c3b2b0d0}, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGQUIT, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0x7f97c3b2b0d0}, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0x7f97c3b2b0d0}, 8) = 0
rt_sigaction(SIGTSTP, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0x7f97c3b2b0d0}, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGTSTP, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0x7f97c3b2b0d0}, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0x7f97c3b2b0d0}, 8) = 0
rt_sigaction(SIGTTIN, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0x7f97c3b2b0d0}, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGTTIN, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0x7f97c3b2b0d0}, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0x7f97c3b2b0d0}, 8) = 0
rt_sigaction(SIGTTOU, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0x7f97c3b2b0d0}, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGTTOU, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0x7f97c3b2b0d0}, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0x7f97c3b2b0d0}, 8) = 0
rt_sigprocmask(SIG_BLOCK, NULL, [], 8)  = 0
rt_sigaction(SIGQUIT, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0x7f97c3b2b0d0}, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0x7f97c3b2b0d0}, 8) = 0
uname({sysname="Linux", nodename="localhost", ...}) = 0
stat("/home/dcolle/tmp", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
stat(".", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
stat("/home", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
stat("/home/dcolle", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
stat("/home/dcolle/tmp", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
stat("/home/dcolle", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
getpid()                                = 848
openat(AT_FDCWD, "/usr/lib64/gconv/gconv-modules.cache", O_RDONLY) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=26388, ...}) = 0
mmap(NULL, 26388, PROT_READ, MAP_SHARED, 3, 0) = 0x7f97c3d37000
close(3)                                = 0
getppid()                               = 845
getpid()                                = 848
getpgrp()                               = 845
ioctl(2, TIOCGPGRP, 0x7ffd83d62f84)     = -1 ENOTTY (Inappropriate ioctl for device)
rt_sigaction(SIGCHLD, {sa_handler=0x56334f349ac0, sa_mask=[], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7f97c3b2b0d0}, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7f97c3b2b0d0}, 8) = 0
ioctl(2, TIOCGPGRP, 0x7ffd83d62f64)     = -1 ENOTTY (Inappropriate ioctl for device)
prlimit64(0, RLIMIT_NPROC, NULL, {rlim_cur=15106, rlim_max=15106}) = 0
rt_sigprocmask(SIG_BLOCK, NULL, [], 8)  = 0
openat(AT_FDCWD, "/usr/bin/skypeforlinux", O_RDONLY) = 3
stat("/usr/bin/skypeforlinux", {st_mode=S_IFREG|0755, st_size=304, ...}) = 0
ioctl(3, TCGETS, 0x7ffd83d63040)        = -1 ENOTTY (Inappropriate ioctl for device)
lseek(3, 0, SEEK_CUR)                   = 0
read(3, "#!/bin/sh\n\nSCRIPT=$(readlink -f "..., 80) = 80
lseek(3, 0, SEEK_SET)                   = 0
prlimit64(0, RLIMIT_NOFILE, NULL, {rlim_cur=1024, rlim_max=512*1024}) = 0
fcntl(255, F_GETFD)                     = -1 EBADF (Bad file descriptor)
dup2(3, 255)                            = 255
close(3)                                = 0
fcntl(255, F_SETFD, FD_CLOEXEC)         = 0
fcntl(255, F_GETFL)                     = 0x8000 (flags O_RDONLY|O_LARGEFILE)
fstat(255, {st_mode=S_IFREG|0755, st_size=304, ...}) = 0
lseek(255, 0, SEEK_CUR)                 = 0
read(255, "#!/bin/sh\n\nSCRIPT=$(readlink -f "..., 304) = 304
rt_sigprocmask(SIG_BLOCK, NULL, [], 8)  = 0
pipe([3, 4])                            = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigprocmask(SIG_BLOCK, [INT CHLD], [], 8) = 0
lseek(255, -266, SEEK_CUR)              = 38
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x7f97c3ab4a10) = 849
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigaction(SIGCHLD, {sa_handler=0x56334f349ac0, sa_mask=[], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7f97c3b2b0d0}, {sa_handler=0x56334f349ac0, sa_mask=[], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7f97c3b2b0d0}, 8) = 0
close(4)                                = 0
read(3, "/usr/bin/skypeforlinux\n", 128) = 23
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=849, si_uid=1000, si_status=0, si_utime=0, si_stime=0} ---
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], WNOHANG, NULL) = 849
wait4(-1, 0x7ffd83d624d0, WNOHANG, NULL) = -1 ECHILD (No child processes)
rt_sigreturn({mask=[]})                 = 23
read(3, "", 128)                        = 0
close(3)                                = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigaction(SIGINT, {sa_handler=0x56334f346480, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0x7f97c3b2b0d0}, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0x7f97c3b2b0d0}, 8) = 0
rt_sigaction(SIGINT, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0x7f97c3b2b0d0}, {sa_handler=0x56334f346480, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0x7f97c3b2b0d0}, 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
read(255, "USR_DIRECTORY=$(readlink -f $(di"..., 304) = 266
rt_sigprocmask(SIG_BLOCK, NULL, [], 8)  = 0
pipe([3, 4])                            = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigprocmask(SIG_BLOCK, [INT CHLD], [], 8) = 0
lseek(255, -215, SEEK_CUR)              = 89
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x7f97c3ab4a10) = 850
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigaction(SIGCHLD, {sa_handler=0x56334f349ac0, sa_mask=[], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7f97c3b2b0d0}, {sa_handler=0x56334f349ac0, sa_mask=[], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0x7f97c3b2b0d0}, 8) = 0
close(4)                                = 0
read(3, "/usr\n", 128)                  = 5
read(3, "", 128)                        = 0
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=850, si_uid=1000, si_status=0, si_utime=0, si_stime=0} ---
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], WNOHANG, NULL) = 850
wait4(-1, 0x7ffd83d624d0, WNOHANG, NULL) = -1 ECHILD (No child processes)
rt_sigreturn({mask=[]})                 = 0
close(3)                                = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigaction(SIGINT, {sa_handler=0x56334f346480, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0x7f97c3b2b0d0}, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0x7f97c3b2b0d0}, 8) = 0
rt_sigaction(SIGINT, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0x7f97c3b2b0d0}, {sa_handler=0x56334f346480, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0x7f97c3b2b0d0}, 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
read(255, "\nSKYPE_PATH=/opt/skypeforlinux/s"..., 304) = 215
stat(".", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
stat("/usr/lib/llvm/7/bin/mkdir", 0x7ffd83d62cd0) = -1 ENOENT (No such file or directory)
stat("/usr/local/sbin/mkdir", 0x7ffd83d62cd0) = -1 ENOENT (No such file or directory)
stat("/usr/local/bin/mkdir", 0x7ffd83d62cd0) = -1 ENOENT (No such file or directory)
stat("/usr/sbin/mkdir", 0x7ffd83d62cd0) = -1 ENOENT (No such file or directory)
stat("/usr/bin/mkdir", 0x7ffd83d62cd0)  = -1 ENOENT (No such file or directory)
stat("/sbin/mkdir", 0x7ffd83d62cd0)     = -1 ENOENT (No such file or directory)
stat("/bin/mkdir", {st_mode=S_IFREG|0755, st_size=55848, ...}) = 0
stat("/bin/mkdir", {st_mode=S_IFREG|0755, st_size=55848, ...}) = 0
geteuid()                               = 1000
getegid()                               = 1000
getuid()                                = 1000
getgid()                                = 1000
access("/bin/mkdir", X_OK)              = 0
stat("/bin/mkdir", {st_mode=S_IFREG|0755, st_size=55848, ...}) = 0
geteuid()                               = 1000
getegid()                               = 1000
getuid()                                = 1000
getgid()                                = 1000
access("/bin/mkdir", R_OK)              = 0
stat("/bin/mkdir", {st_mode=S_IFREG|0755, st_size=55848, ...}) = 0
stat("/bin/mkdir", {st_mode=S_IFREG|0755, st_size=55848, ...}) = 0
geteuid()                               = 1000
getegid()                               = 1000
getuid()                                = 1000
getgid()                                = 1000
access("/bin/mkdir", X_OK)              = 0
stat("/bin/mkdir", {st_mode=S_IFREG|0755, st_size=55848, ...}) = 0
geteuid()                               = 1000
getegid()                               = 1000
getuid()                                = 1000
getgid()                                = 1000
access("/bin/mkdir", R_OK)              = 0
rt_sigprocmask(SIG_BLOCK, [INT CHLD], [], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [INT CHLD], 8) = 0
rt_sigprocmask(SIG_SETMASK, [INT CHLD], NULL, 8) = 0
lseek(255, -102, SEEK_CUR)              = 202
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x7f97c3ab4a10) = 853
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigaction(SIGINT, {sa_handler=0x56334f346480, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0x7f97c3b2b0d0}, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0x7f97c3b2b0d0}, 8) = 0
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], 0, NULL) = 853
rt_sigaction(SIGINT, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0x7f97c3b2b0d0}, {sa_handler=0x56334f346480, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0x7f97c3b2b0d0}, 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=853, si_uid=1000, si_status=0, si_utime=0, si_stime=0} ---
wait4(-1, 0x7ffd83d62950, WNOHANG, NULL) = -1 ECHILD (No child processes)
rt_sigreturn({mask=[]})                 = 0
read(255, "\nnohup \"$SKYPE_PATH\" --executed-"..., 304) = 102
rt_sigprocmask(SIG_BLOCK, [INT CHLD], [], 8) = 0
lseek(255, -1, SEEK_CUR)                = 303
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x7f97c3ab4a10) = 854
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD], 8) = 0
rt_sigprocmask(SIG_SETMASK, [CHLD], NULL, 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD], 8) = 0
rt_sigprocmask(SIG_SETMASK, [CHLD], NULL, 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [CHLD], 8) = 0
rt_sigprocmask(SIG_SETMASK, [CHLD], NULL, 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
read(255, "\n", 304)                    = 1
read(255, "", 304)                      = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
exit_group(0)                           = ?
+++ exited with 0 +++