diff --git a/linux/linux.mk b/linux/linux.mk
index 7f4c916671..7527b11673 100644
--- a/linux/linux.mk
+++ b/linux/linux.mk
@@ -121,6 +121,16 @@ LINUX_MAKE_ENV += \
 	KBUILD_BUILD_TIMESTAMP="$(shell LC_ALL=C date -d @$(SOURCE_DATE_EPOCH))"
 endif
 
+# gcc-8 started warning about function aliases that have a
+# non-matching prototype.  This seems rather useful in general, but it
+# causes tons of warnings in the Linux kernel, where we rely on
+# abusing those aliases for system call entry points, in order to
+# sanitize the arguments passed from user space in registers.
+# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82435
+ifeq ($(BR2_TOOLCHAIN_GCC_AT_LEAST_8),y)
+LINUX_MAKE_ENV += KCFLAGS=-Wno-attribute-alias
+endif
+
 # Get the real Linux version, which tells us where kernel modules are
 # going to be installed in the target filesystem.
 LINUX_VERSION_PROBED = `$(MAKE) $(LINUX_MAKE_FLAGS) -C $(LINUX_DIR) --no-print-directory -s kernelrelease 2>/dev/null`