擦擦擦

set_robust_list(0x7f0f49370b60, 24)     = 0
mmap(NULL, 2097248, PROT_READ|PROT_WRITE, MAP_SHARED|MAP_ANONYMOUS, -1, 0) = 0x7f0f31ed3000
nanosleep({0, 100000000}, NULL)         = 0
close(3)                                = 0
clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x7f0f49370b50) = 12771
rt_sigaction(SIGHUP, {0x7f0f3deb6780, [], SA_RESTORER, 0x7f0f4589c5f0}, {0x7f0f496930c0, ~[ILL TRAP ABRT BUS FPE KILL SEGV CONT STOP TSTP TTIN TTOU SYS RTMIN RT_1], SA_RESTORER|SA_SIGINFO, 0x7f0f45ce23b0}, 8) = 0
rt_sigaction(SIGCHLD, {0x7f0f3deb6780, [], SA_RESTORER, 0x7f0f4589c5f0}, {SIG_DFL, [], 0}, 8) = 0
rt_sigaction(SIGTERM, {0x7f0f3deb6780, [], SA_RESTORER, 0x7f0f4589c5f0}, {0x7f0f496930c0, ~[ILL TRAP ABRT BUS FPE KILL SEGV CONT STOP TSTP TTIN TTOU SYS RTMIN RT_1], SA_RESTORER|SA_SIGINFO, 0x7f0f45ce23b0}, 8) = 0
rt_sigaction(SIGUSR1, {0x7f0f3deb6780, [], SA_RESTORER, 0x7f0f4589c5f0}, {0x7f0f496930c0, ~[ILL TRAP ABRT BUS FPE KILL SEGV CONT STOP TSTP TTIN TTOU SYS RTMIN RT_1], SA_RESTORER|SA_SIGINFO, 0x7f0f45ce23b0}, 8) = 0
rt_sigaction(SIGUSR2, {0x7f0f3deb6780, [], SA_RESTORER, 0x7f0f4589c5f0}, {0x7f0f496930c0, ~[ILL TRAP ABRT BUS FPE KILL SEGV CONT STOP TSTP TTIN TTOU SYS RTMIN RT_1], SA_RESTORER|SA_SIGINFO, 0x7f0f45ce23b0}, 8) = 0
rt_sigaction(SIGIO, {0x7f0f3deb6780, [], SA_RESTORER, 0x7f0f4589c5f0}, {SIG_DFL, [], 0}, 8) = 0
rt_sigaction(SIGALRM, {0x7f0f3deb6780, [], SA_RESTORER, 0x7f0f4589c5f0}, {SIG_DFL, [], 0}, 8) = 0
rt_sigaction(SIGRT_2, {0x7f0f3deb6780, [], SA_RESTORER, 0x7f0f4589c5f0}, {SIG_DFL, [], 0}, 8) = 0
prctl(PR_SET_PDEATHSIG, SIGTERM)        = 0
wait4(-1, 0x7fff7b6d5acc, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGIO {si_signo=SIGIO, si_code=SI_USER, si_pid=12771, si_uid=0} ---
rt_sigreturn({mask=[]})                 = -1 EINTR (Interrupted system call)
clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x7f0f49370b50) = 12850
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], 0, NULL) = 12771
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12771, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
rt_sigreturn({mask=[]})                 = 12771
wait4(-1, 0x7fff7b6d5acc, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGIO {si_signo=SIGIO, si_code=SI_USER, si_pid=12850, si_uid=0} ---
rt_sigreturn({mask=[]})                 = -1 EINTR (Interrupted system call)
clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x7f0f49370b50) = 12905
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], 0, NULL) = 12850
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12850, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
rt_sigreturn({mask=[]})                 = 12850
wait4(-1, 0x7fff7b6d5acc, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGIO {si_signo=SIGIO, si_code=SI_USER, si_pid=12905, si_uid=0} ---
rt_sigreturn({mask=[]})                 = -1 EINTR (Interrupted system call)
clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x7f0f49370b50) = 12925
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], 0, NULL) = 12905
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12905, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
rt_sigreturn({mask=[]})                 = 12905
wait4(-1, 0x7fff7b6d5acc, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGIO {si_signo=SIGIO, si_code=SI_USER, si_pid=12925, si_uid=0} ---
rt_sigreturn({mask=[]})                 = -1 EINTR (Interrupted system call)
clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x7f0f49370b50) = 12956
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], 0, NULL) = 12925
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12925, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
rt_sigreturn({mask=[]})                 = 12925
wait4(-1, 0x7fff7b6d5acc, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGIO {si_signo=SIGIO, si_code=SI_USER, si_pid=12956, si_uid=0} ---
rt_sigreturn({mask=[]})                 = -1 EINTR (Interrupted system call)
clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x7f0f49370b50) = 12984
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], 0, NULL) = 12956
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12956, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
rt_sigreturn({mask=[]})                 = 12956
wait4(-1, 0x7fff7b6d5acc, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGIO {si_signo=SIGIO, si_code=SI_USER, si_pid=12984, si_uid=0} ---
rt_sigreturn({mask=[]})                 = -1 EINTR (Interrupted system call)
clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x7f0f49370b50) = 13006
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12984, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
rt_sigreturn({mask=[]})                 = 13006
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], 0, NULL) = 12984
wait4(-1, 0x7fff7b6d5acc, 0, NULL)      = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
--- SIGIO {si_signo=SIGIO, si_code=SI_USER, si_pid=13006, si_uid=0} ---
rt_sigreturn({mask=[]})                 = -1 EINTR (Interrupted system call)
clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x7f0f49370b50) = 13009
wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], 0, NULL) = 13006
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=13006, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
rt_sigreturn({mask=[]})                 = 13006
wait4(-1,