diff --git a/arch/um/include/kern_util.h b/arch/um/include/kern_util.h
index 8d7f7c1cb9c64e40dd96cd17f8e65fe3b9a323da..6c2be26f1d7db94647ba856f8217b03b86e9e63b 100644
--- a/arch/um/include/kern_util.h
+++ b/arch/um/include/kern_util.h
@@ -117,7 +117,7 @@ extern void sigio_handler(int sig, union uml_pt_regs *regs);
 
 extern void copy_sc(union uml_pt_regs *regs, void *from);
 
-unsigned long to_irq_stack(int sig, unsigned long *mask_out);
+extern unsigned long to_irq_stack(unsigned long *mask_out);
 unsigned long from_irq_stack(int nested);
 
 #endif
diff --git a/arch/um/kernel/irq.c b/arch/um/kernel/irq.c
index 9870febdbead3897b2ed9257ba0548d7e0389159..cf0dd9cf8c430e5cb7578d1166277d74970859ae 100644
--- a/arch/um/kernel/irq.c
+++ b/arch/um/kernel/irq.c
@@ -518,13 +518,13 @@ int init_aio_irq(int irq, char *name, irq_handler_t handler)
 
 static unsigned long pending_mask;
 
-unsigned long to_irq_stack(int sig, unsigned long *mask_out)
+unsigned long to_irq_stack(unsigned long *mask_out)
 {
 	struct thread_info *ti;
 	unsigned long mask, old;
 	int nested;
 
-	mask = xchg(&pending_mask, 1 << sig);
+	mask = xchg(&pending_mask, *mask_out);
 	if(mask != 0){
 		/* If any interrupts come in at this point, we want to
 		 * make sure that their bits aren't lost by our
@@ -534,7 +534,7 @@ unsigned long to_irq_stack(int sig, unsigned long *mask_out)
 		 * and pending_mask contains a bit for each interrupt
 		 * that came in.
 		 */
-		old = 1 << sig;
+		old = *mask_out;
 		do {
 			old |= mask;
 			mask = xchg(&pending_mask, old);
@@ -550,6 +550,7 @@ unsigned long to_irq_stack(int sig, unsigned long *mask_out)
 
 		task = cpu_tasks[ti->cpu].task;
 		tti = task_thread_info(task);
+
 		*ti = *tti;
 		ti->real_thread = tti;
 		task->stack = ti;
diff --git a/arch/um/os-Linux/signal.c b/arch/um/os-Linux/signal.c
index 18e5c8b67eb8cebbe84db25bed7e64e623522dc9..b98f7ea2d2f6562ce894e4a4fe6f57b003af7768 100644
--- a/arch/um/os-Linux/signal.c
+++ b/arch/um/os-Linux/signal.c
@@ -119,7 +119,7 @@ void (*handlers[_NSIG])(int sig, struct sigcontext *sc);
 
 void handle_signal(int sig, struct sigcontext *sc)
 {
-	unsigned long pending = 0;
+	unsigned long pending = 1UL << sig;
 
 	do {
 		int nested, bail;
@@ -134,7 +134,7 @@ void handle_signal(int sig, struct sigcontext *sc)
 		 * have to return, and the upper handler will deal
 		 * with this interrupt.
 		 */
-		bail = to_irq_stack(sig, &pending);
+		bail = to_irq_stack(&pending);
 		if(bail)
 			return;