[patch 5/5] x86: e820 memmap - add checking for NULL early param

[Cyrill Gorcunov]

Signed-off-by: Cyrill Gorcunov <gorcunov@xxxxxxxxx>
---

Index: linux-2.6.git/arch/x86/kernel/e820.c
====================================================================
--- linux-2.6.git.orig/arch/x86/kernel/e820.c	2008-06-28 21:15:44.000000000 +0400
+++ linux-2.6.git/arch/x86/kernel/e820.c	2008-07-05 12:55:55.000000000 +0400
@@ -1131,6 +1131,9 @@ static int __init parse_memmap_opt(char 
 	char *oldp;
 	u64 start_at, mem_size;
 
+	if (!p)
+		return -EINVAL;
+
 	if (!strcmp(p, "exactmap")) {
 #ifdef CONFIG_CRASH_DUMP
 		/*

-- 
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