Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757389Ab2J1XfP (ORCPT ); Sun, 28 Oct 2012 19:35:15 -0400 Received: from shadbolt.e.decadent.org.uk ([88.96.1.126]:42149 "EHLO shadbolt.e.decadent.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756927Ab2J1X2M (ORCPT ); Sun, 28 Oct 2012 19:28:12 -0400 Message-Id: <20121028231551.244992820@decadent.org.uk> User-Agent: quilt/0.60-1 Date: Sun, 28 Oct 2012 23:16:22 +0000 From: Ben Hutchings To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: akpm@linux-foundation.org, alan@lxorguk.ukuu.org.uk, Dan Carpenter , Robert Richter Subject: [ 046/105] oprofile, x86: Fix wrapping bug in op_x86_get_ctrl() In-Reply-To: <20121028231536.970033833@decadent.org.uk> X-SA-Exim-Connect-IP: 2001:470:1f08:1539:21c:bfff:fe03:f805 X-SA-Exim-Mail-From: ben@decadent.org.uk X-SA-Exim-Scanned: No (on shadbolt.decadent.org.uk); SAEximRunCond expanded to false Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1246 Lines: 38 3.2-stable review patch. If anyone has any objections, please let me know. ------------------ From: Dan Carpenter commit 44009105081b51417f311f4c3be0061870b6b8ed upstream. The "event" variable is a u16 so the shift will always wrap to zero making the line a no-op. Signed-off-by: Dan Carpenter Signed-off-by: Robert Richter Signed-off-by: Ben Hutchings --- arch/x86/oprofile/nmi_int.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/oprofile/nmi_int.c b/arch/x86/oprofile/nmi_int.c index 26b8a85..48768df 100644 --- a/arch/x86/oprofile/nmi_int.c +++ b/arch/x86/oprofile/nmi_int.c @@ -55,7 +55,7 @@ u64 op_x86_get_ctrl(struct op_x86_model_spec const *model, val |= counter_config->extra; event &= model->event_mask ? model->event_mask : 0xFF; val |= event & 0xFF; - val |= (event & 0x0F00) << 24; + val |= (u64)(event & 0x0F00) << 24; return val; } -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/