[S390] early: limit savesys cmd string handling

Use snprintf() here as well so we won't have to deal with this again.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/arch/s390/kernel/early.c b/arch/s390/kernel/early.c
index 668138ee85d9..068f8465c4ee 100644
--- a/arch/s390/kernel/early.c
+++ b/arch/s390/kernel/early.c
@@ -143,8 +143,9 @@ static noinline __init void create_kernel_nss(void)
         snprintf(defsys_cmd + hlen, DEFSYS_CMD_SIZE - hlen,
                  " EW MINSIZE=%.7iK PARMREGS=0-13", min_size);
         defsys_cmd[DEFSYS_CMD_SIZE - 1] = '\0';
-        sprintf(savesys_cmd, "SAVESYS %s \n IPL %s",
-                kernel_nss_name, kernel_nss_name);
+        snprintf(savesys_cmd, SAVESYS_CMD_SIZE, "SAVESYS %s \n IPL %s",
+                 kernel_nss_name, kernel_nss_name);
+        savesys_cmd[SAVESYS_CMD_SIZE - 1] = '\0';
 
         __cpcmd(defsys_cmd, NULL, 0, &response);