diff --git a/sysdeps/mach/hurd/Makefile b/sysdeps/mach/hurd/Makefile
index d0e3da03ca..d0f759afdd 100644
--- a/sysdeps/mach/hurd/Makefile
+++ b/sysdeps/mach/hurd/Makefile
@@ -289,3 +289,14 @@ check-execstack-xfail += ld.so libc.so libpthread.so
 # We always create a thread for signals
 test-xfail-tst-single_threaded-pthread-static = yes
 endif
+
+# For bug 30166
+# (missing RLIMIT_AS support)
+ifeq ($(subdir),malloc)
+tests-unsupported += tst-malloc-thread-fail
+tests-unsupported += tst-malloc-thread-fail-malloc-check
+tests-unsupported += tst-malloc-thread-fail-mcheck
+tests-unsupported += tst-malloc-thread-fail-malloc-hugetlb1
+tests-unsupported += tst-malloc-thread-fail-malloc-hugetlb2
+tests-unsupported += tst-dynarray-fail
+endif