From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:52161) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WiTLb-0000YX-PO for qemu-devel@nongnu.org; Thu, 08 May 2014 14:47:16 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1WiTLU-0006FW-73 for qemu-devel@nongnu.org; Thu, 08 May 2014 14:47:11 -0400 Received: from mnementh.archaic.org.uk ([2001:8b0:1d0::1]:48064) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1WiTLU-0006Dw-0I for qemu-devel@nongnu.org; Thu, 08 May 2014 14:47:04 -0400 From: Peter Maydell Date: Thu, 8 May 2014 19:46:56 +0100 Message-Id: <1399574818-19349-7-git-send-email-peter.maydell@linaro.org> In-Reply-To: <1399574818-19349-1-git-send-email-peter.maydell@linaro.org> References: <1399574818-19349-1-git-send-email-peter.maydell@linaro.org> Subject: [Qemu-devel] [PATCH 6/8] hw/timer/exynos4210_mct: Avoid overflow in exynos4210_ltick_recalc_count List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: Peter Crosthwaite , patches@linaro.org Add casts to avoid potentially overflowing the multiplications of 32 bit quantities in exynos4210_ltick_recalc_count(). Signed-off-by: Peter Maydell --- hw/timer/exynos4210_mct.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/hw/timer/exynos4210_mct.c b/hw/timer/exynos4210_mct.c index 86f4fcd..69dbecd 100644 --- a/hw/timer/exynos4210_mct.c +++ b/hw/timer/exynos4210_mct.c @@ -824,14 +824,14 @@ static void exynos4210_ltick_recalc_count(struct tick_timer *s) */ if (s->last_tcnto) { - to_count = s->last_tcnto * s->last_icnto; + to_count = (uint64_t)s->last_tcnto * s->last_icnto; } else { to_count = s->last_icnto; } } else { /* distance is passed, recalculate with tcnto * icnto */ if (s->icntb) { - s->distance = s->tcntb * s->icntb; + s->distance = (uint64_t)s->tcntb * s->icntb; } else { s->distance = s->tcntb; } -- 1.9.2