Don't try to "validate" a non-existing timeval.

settime() with a NULL timeval is silly but legal.

Noticed by Dave Jones <davej@redhat.com>

Signed-off-by: Linus Torvalds <torvalds@osdl.org>

2 files changed, 3 insertions, 3 deletions

diff --git a/kernel/time.c b/kernel/time.c
index 7477b1d2079e..1f23e683d6aa 100644
--- a/kernel/time.c
+++ b/kernel/time.c
@@ -155,7 +155,7 @@ int do_sys_settimeofday(struct timespec *tv, struct timezone *tz)
         static int firsttime = 1;
         int error = 0;
 
-        if (!timespec_valid(tv))
+        if (tv && !timespec_valid(tv))
                 return -EINVAL;
 
         error = security_settime(tv, tz);
diff --git a/security/seclvl.c b/security/seclvl.c
index 1caac0164643..8529ea6f7aa8 100644
--- a/security/seclvl.c
+++ b/security/seclvl.c
@@ -368,8 +368,8 @@ static int seclvl_capable(struct task_struct *tsk, int cap)
  */
 static int seclvl_settime(struct timespec *tv, struct timezone *tz)
 {
-        struct timespec now;
-        if (seclvl > 1) {
+        if (tv && seclvl > 1) {
+                struct timespec now;
                 now = current_kernel_time();
                 if (tv->tv_sec < now.tv_sec ||
                     (tv->tv_sec == now.tv_sec && tv->tv_nsec < now.tv_nsec)) {