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authorCyrill Gorcunov <gorcunov@gmail.com>2008-07-05 15:53:39 +0400
committerIngo Molnar <mingo@elte.hu>2008-07-09 13:58:07 +0200
commita737abd11ac4eb9f4226fa8c9f1d9b5be12a96c1 (patch)
tree79a2e5264d9d6990adf8d7ced944cca112df96d6
parentc22d4c1885130db9c07f6441ab461208a1ba16b2 (diff)
x86: e820 memmap - add checking for NULL early param
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com> Cc: Cyrill Gorcunov <gorcunov@gmail.com> Cc: akpm@linux-foundation.org Cc: andi@firstfloor.org Signed-off-by: Ingo Molnar <mingo@elte.hu>
-rw-r--r--arch/x86/kernel/e820.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c
index 292ebc7fe4d..66fd5bd7831 100644
--- a/arch/x86/kernel/e820.c
+++ b/arch/x86/kernel/e820.c
@@ -1198,6 +1198,9 @@ static int __init parse_memmap_opt(char *p)
char *oldp;
u64 start_at, mem_size;
+ if (!p)
+ return -EINVAL;
+
if (!strcmp(p, "exactmap")) {
#ifdef CONFIG_CRASH_DUMP
/*