rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
--- SIGCHLD (Child exited) @ 0 (0) ---
--- SIGCHLD (Child exited) @ 0 (0) ---
rt_sigaction(SIGCHLD, NULL, {0x49ff50, [], SA_RESTORER|SA_NODEFER, 0x7efbfde8a0a0}, 8) = 0
rt_sigreturn(0x7efbfd39ee40)            = 136
--- SIGSEGV (Segmentation fault) @ 0 (0) ---
+++ killed by SIGSEGV +++