--- zzzz-none-000/linux-3.10.107/arch/sh/mm/kmap.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/arch/sh/mm/kmap.c	2021-02-04 17:41:59.000000000 +0000
@@ -36,6 +36,7 @@
 
 	BUG_ON(!test_bit(PG_dcache_clean, &page->flags));
 
+	preempt_disable();
 	pagefault_disable();
 
 	idx = FIX_CMAP_END -
@@ -64,4 +65,5 @@
 	}
 
 	pagefault_enable();
+	preempt_enable();
 }