diff --git a/target/linux/ramips/patches-4.14/110-mt7621-perfctr-fix.patch b/target/linux/ramips/patches-4.14/110-mt7621-perfctr-fix.patch
new file mode 100644
index 0000000000..4c40e65ab9
--- /dev/null
+++ b/target/linux/ramips/patches-4.14/110-mt7621-perfctr-fix.patch
@@ -0,0 +1,15 @@
+--- a/arch/mips/ralink/irq-gic.c
++++ b/arch/mips/ralink/irq-gic.c
+@@ -15,6 +15,12 @@
+ 
+ int get_c0_perfcount_int(void)
+ {
++	/*
++	 * Performance counter events are routed through GIC.
++	 * Prevent them from firing on CPU IRQ7 as well
++	 */
++	clear_c0_status(IE_SW0 << 7);
++
+ 	return gic_get_c0_perfcount_int();
+ }
+ EXPORT_SYMBOL_GPL(get_c0_perfcount_int);