[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>

1 files changed, 1 insertions, 1 deletions

diff --git a/arch/ia64/kernel/efi.c b/arch/ia64/kernel/efi.c
index c485a3b32ba8..d51c2f214875 100644
--- a/arch/ia64/kernel/efi.c
+++ b/arch/ia64/kernel/efi.c
@@ -458,7 +458,7 @@ efi_init (void)
         /* 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';
         }