--- zzzz-none-000/linux-3.10.107/arch/mips/fw/sni/sniprom.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/arch/mips/fw/sni/sniprom.c	2021-02-04 17:41:59.000000000 +0000
@@ -40,7 +40,8 @@
 
 #ifdef CONFIG_64BIT
 
-static u8 o32_stk[16384];
+/* O32 stack has to be 8-byte aligned. */
+static u64 o32_stk[4096];
 #define O32_STK	  &o32_stk[sizeof(o32_stk)]
 
 #define __PROM_O32(fun, arg) fun arg __asm__(#fun); \