__NR_sigaltstack  607 sandbox/linux/services/arm_linux_syscalls.h #define __NR_sigaltstack (__NR_SYSCALL_BASE+186)
__NR_sigaltstack  758 sandbox/linux/services/x86_32_linux_syscalls.h #define __NR_sigaltstack 186
__NR_sigaltstack  538 sandbox/linux/services/x86_64_linux_syscalls.h #define __NR_sigaltstack 131