[PATCH] fix 32bit overflow in timespec_to_sample()

fix 32bit overflow in timespec_to_sample()

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/kernel/posix-cpu-timers.c b/kernel/posix-cpu-timers.c
index 84af54c39e1b..cae4f5728997 100644
--- a/kernel/posix-cpu-timers.c
+++ b/kernel/posix-cpu-timers.c
@@ -36,7 +36,7 @@ timespec_to_sample(clockid_t which_clock, const struct timespec *tp)
         union cpu_time_count ret;
         ret.sched = 0;          /* high half always zero when .cpu used */
         if (CPUCLOCK_WHICH(which_clock) == CPUCLOCK_SCHED) {
-                ret.sched = tp->tv_sec * NSEC_PER_SEC + tp->tv_nsec;
+                ret.sched = (unsigned long long)tp->tv_sec * NSEC_PER_SEC + tp->tv_nsec;
         } else {
                 ret.cpu = timespec_to_cputime(tp);
         }