diff --git a/lib/libkse/thread/thr_execve.c b/lib/libkse/thread/thr_execve.c
index db5b8587e123..2904a2f95105 100644
--- a/lib/libkse/thread/thr_execve.c
+++ b/lib/libkse/thread/thr_execve.c
@@ -39,30 +39,26 @@ __weak_reference(_execve, execve);
 int 
 _execve(const char *name, char *const *argv, char *const *envp)
 {
-	sigset_t omask;
+	struct kse_execve_args args;
 	struct pthread *curthread;
-	kse_critical_t crit;
-	int saved_errno;
 	int ret;
 
-	/*
-	 * When exec'ing, set the kernel signal mask to the thread's
-	 * signal mask to satisfy POSIX requirements.  We have to enter
-	 * a critical region so that the kernel thread doesn't get
-	 * changed out from under us after setting the signal mask.
-	 */
-	curthread = _get_curthread();
-	crit = _kse_critical_enter();
-	__sys_sigprocmask(SIG_SETMASK, &curthread->sigmask, &omask);
-	 ret = __sys_execve(name, argv, envp);
+	if (!_kse_isthreaded())
+		ret = __sys_execve(name, argv, envp);
+	else {
+		/*
+		 * When exec'ing, set the kernel signal mask to the thread's
+	 	 * signal mask to satisfy POSIX requirements.
+		 */
+		curthread = _get_curthread();
+		args.sigmask = curthread->sigmask;
+		args.sigpend = curthread->sigpend;
+		args.path = (char *)name;
+		args.argv = (char **)argv;
+		args.envp = (char **)envp;
+		args.reserved = NULL;
+		ret = kse_thr_interrupt(NULL, KSE_INTR_EXECVE, (long)&args);
+	}
 
-	/*
-	 * If something went wrong, set the signal mask back but don't
-	 * destroy errno.
-	 */
-	saved_errno = errno;
-	__sys_sigprocmask(SIG_SETMASK, &omask, NULL);
-	errno = saved_errno;
-	_kse_critical_leave(crit);
 	return (ret);
 }
diff --git a/lib/libpthread/thread/thr_execve.c b/lib/libpthread/thread/thr_execve.c
index db5b8587e123..2904a2f95105 100644
--- a/lib/libpthread/thread/thr_execve.c
+++ b/lib/libpthread/thread/thr_execve.c
@@ -39,30 +39,26 @@ __weak_reference(_execve, execve);
 int 
 _execve(const char *name, char *const *argv, char *const *envp)
 {
-	sigset_t omask;
+	struct kse_execve_args args;
 	struct pthread *curthread;
-	kse_critical_t crit;
-	int saved_errno;
 	int ret;
 
-	/*
-	 * When exec'ing, set the kernel signal mask to the thread's
-	 * signal mask to satisfy POSIX requirements.  We have to enter
-	 * a critical region so that the kernel thread doesn't get
-	 * changed out from under us after setting the signal mask.
-	 */
-	curthread = _get_curthread();
-	crit = _kse_critical_enter();
-	__sys_sigprocmask(SIG_SETMASK, &curthread->sigmask, &omask);
-	 ret = __sys_execve(name, argv, envp);
+	if (!_kse_isthreaded())
+		ret = __sys_execve(name, argv, envp);
+	else {
+		/*
+		 * When exec'ing, set the kernel signal mask to the thread's
+	 	 * signal mask to satisfy POSIX requirements.
+		 */
+		curthread = _get_curthread();
+		args.sigmask = curthread->sigmask;
+		args.sigpend = curthread->sigpend;
+		args.path = (char *)name;
+		args.argv = (char **)argv;
+		args.envp = (char **)envp;
+		args.reserved = NULL;
+		ret = kse_thr_interrupt(NULL, KSE_INTR_EXECVE, (long)&args);
+	}
 
-	/*
-	 * If something went wrong, set the signal mask back but don't
-	 * destroy errno.
-	 */
-	saved_errno = errno;
-	__sys_sigprocmask(SIG_SETMASK, &omask, NULL);
-	errno = saved_errno;
-	_kse_critical_leave(crit);
 	return (ret);
 }