diff --git a/[refs] b/[refs]
index f7ab3943af9e..6291c0ac5aa0 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: bda62633983f9db49ce0b1a9235b3709c1cda5f0
+refs/heads/master: 53b5650273fea486ac8ac6c1d1e9a6cd17aa31ca
diff --git a/trunk/arch/x86/kernel/irq_32.c b/trunk/arch/x86/kernel/irq_32.c
index e16e99ebd7ad..40fc86161d92 100644
--- a/trunk/arch/x86/kernel/irq_32.c
+++ b/trunk/arch/x86/kernel/irq_32.c
@@ -28,6 +28,9 @@ DEFINE_PER_CPU(struct pt_regs *, irq_regs);
 EXPORT_PER_CPU_SYMBOL(irq_regs);
 
 #ifdef CONFIG_DEBUG_STACKOVERFLOW
+
+int sysctl_panic_on_stackoverflow __read_mostly;
+
 /* Debugging check for stack overflow: is there less than 1KB free? */
 static int check_stack_overflow(void)
 {