[PATCH] fix 32bit overflow in timespec_to_sample()
authorOleg Nesterov <oleg@tv-sign.ru>
Mon, 28 Nov 2005 21:43:55 +0000 (13:43 -0800)
committerLinus Torvalds <torvalds@g5.osdl.org>
Mon, 28 Nov 2005 22:42:23 +0000 (14:42 -0800)
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>
kernel/posix-cpu-timers.c

index 84af54c39e1b0c31ff32854b45cbb15a512a4ba5..cae4f572899714369bcd8d5d18dad16f84d690a4 100644 (file)
@@ -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);
        }