From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D0342C433DF for ; Mon, 8 Jun 2020 23:45:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A1619204EF for ; Mon, 8 Jun 2020 23:45:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1591659956; bh=b+1XwEzr+DhqZxYeCU1uBZSVUHjkJ8suceoDvYlayho=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=kI9q/9fR61IiVOPDuDK61QgK87bnPSWrdi7d+72QUvJhIVLHTKJGwjNsaOsnRvnal 3lH6cFb89B8OyaNwiyg3WPtH0BH/gLmuvBETHtZ073M4tz8K31cDnq96KPKID/7tnt tqYj4wXdVX2/Khsl+vBTJeV2L2IBhMOlEEdN8KBE= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731978AbgFHX0d (ORCPT ); Mon, 8 Jun 2020 19:26:33 -0400 Received: from mail.kernel.org ([198.145.29.99]:54100 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731976AbgFHX0b (ORCPT ); Mon, 8 Jun 2020 19:26:31 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 49DA32068D; Mon, 8 Jun 2020 23:26:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1591658791; bh=b+1XwEzr+DhqZxYeCU1uBZSVUHjkJ8suceoDvYlayho=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=KsbycBKbM1HBeGxRNrEYWW+kWtmBiFIuD5N6bi9Q6Wol04XPTmXgi/0AxCdfXl1M7 xj3shZazXRxCTQbmT/pDhtGGo//4R8OscL8ddyxgEwlL+bh6Gpot9kWUKQZjYxR71c fUd3xhGpJA8gGeZlhy9LZpeuvZlIoO8qDptfPfdg= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Xie XiuQi , Hulk Robot , Andrew Bowers , Jeff Kirsher , Sasha Levin , intel-wired-lan@lists.osuosl.org, netdev@vger.kernel.org Subject: [PATCH AUTOSEL 4.14 66/72] ixgbe: fix signed-integer-overflow warning Date: Mon, 8 Jun 2020 19:24:54 -0400 Message-Id: <20200608232500.3369581-66-sashal@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200608232500.3369581-1-sashal@kernel.org> References: <20200608232500.3369581-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Xie XiuQi [ Upstream commit 3b70683fc4d68f5d915d9dc7e5ba72c732c7315c ] ubsan report this warning, fix it by adding a unsigned suffix. UBSAN: signed-integer-overflow in drivers/net/ethernet/intel/ixgbe/ixgbe_common.c:2246:26 65535 * 65537 cannot be represented in type 'int' CPU: 21 PID: 7 Comm: kworker/u256:0 Not tainted 5.7.0-rc3-debug+ #39 Hardware name: Huawei TaiShan 2280 V2/BC82AMDC, BIOS 2280-V2 03/27/2020 Workqueue: ixgbe ixgbe_service_task [ixgbe] Call trace: dump_backtrace+0x0/0x3f0 show_stack+0x28/0x38 dump_stack+0x154/0x1e4 ubsan_epilogue+0x18/0x60 handle_overflow+0xf8/0x148 __ubsan_handle_mul_overflow+0x34/0x48 ixgbe_fc_enable_generic+0x4d0/0x590 [ixgbe] ixgbe_service_task+0xc20/0x1f78 [ixgbe] process_one_work+0x8f0/0xf18 worker_thread+0x430/0x6d0 kthread+0x218/0x238 ret_from_fork+0x10/0x18 Reported-by: Hulk Robot Signed-off-by: Xie XiuQi Tested-by: Andrew Bowers Signed-off-by: Jeff Kirsher Signed-off-by: Sasha Levin --- drivers/net/ethernet/intel/ixgbe/ixgbe_common.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_common.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_common.c index 815284fe9324..6b5662674c75 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_common.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_common.c @@ -2267,7 +2267,7 @@ s32 ixgbe_fc_enable_generic(struct ixgbe_hw *hw) } /* Configure pause time (2 TCs per register) */ - reg = hw->fc.pause_time * 0x00010001; + reg = hw->fc.pause_time * 0x00010001U; for (i = 0; i < (MAX_TRAFFIC_CLASS / 2); i++) IXGBE_WRITE_REG(hw, IXGBE_FCTTV(i), reg); -- 2.25.1