[IA64] Fix a possible buffer overflow in efi.c
Make sure to save space for the trailing '\0'.
Signed-off-by: Zou Nan hai <nanhai.zou@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
diff --git a/arch/ia64/kernel/efi.c b/arch/ia64/kernel/efi.c
index c485a3b..d51c2f2 100644
--- a/arch/ia64/kernel/efi.c
+++ b/arch/ia64/kernel/efi.c
@@ -458,7 +458,7 @@
/* Show what we know for posterity */
c16 = __va(efi.systab->fw_vendor);
if (c16) {
- for (i = 0;i < (int) sizeof(vendor) && *c16; ++i)
+ for (i = 0;i < (int) sizeof(vendor) - 1 && *c16; ++i)
vendor[i] = *c16++;
vendor[i] = '\0';
}