PT_SYSCALL
LINUX_PTRACE_SYSCALL, PT_SYSCALL,
case PT_SYSCALL:
if (req == PT_SYSCALL) {
case PT_SYSCALL:
case PT_SYSCALL:
case PT_SYSCALL:
USER_VA0_DISABLE(user_va0_disable_pt_syscall, PT_SYSCALL)
ptrace(PT_SYSCALL, child, (void *)1, 0) != -1);
SYSCALL_REQUIRE(ptrace(PT_SYSCALL, child, (void *)1, 0) != -1);
SYSCALL_REQUIRE(ptrace(PT_SYSCALL, child, (void *)1, 0) != -1);
SYSCALL_REQUIRE(ptrace(PT_SYSCALL, child, (void *)1, 0) != -1);