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,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham 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 58146C3A5A2 for ; Sun, 22 Sep 2019 19:28:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 30B2D206B6 for ; Sun, 22 Sep 2019 19:28:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1569180509; bh=PAolAwDXSt+ysTH+9yNnx2oXETE5pOv1wJqyLHv1WTc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=jGqM1q+Uy0LmIUgL5YXQyUoVhwn+ukstMfZRK2Xn+ljb9gzS7vkCmA8v57rvZaTkK 17BFOcCKJ/WKw9RP9j0wCUk4ZRWRH0k6hP2SHYgmBNN/ml9ln0EI4bLaXJPAg3ayUC 3unmwxqFmEiMjiab0z+kvgTccM4trf2ISXXO8wVU= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731658AbfIVT22 (ORCPT ); Sun, 22 Sep 2019 15:28:28 -0400 Received: from mail.kernel.org ([198.145.29.99]:48070 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2404533AbfIVSuq (ORCPT ); Sun, 22 Sep 2019 14:50:46 -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 94C76214AF; Sun, 22 Sep 2019 18:50:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1569178245; bh=PAolAwDXSt+ysTH+9yNnx2oXETE5pOv1wJqyLHv1WTc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=xYPssyJQBNGz3+1HkJffhekzMR11yuEvNANIvJv/rY0PSC+UHyuQfjjo6tlqnQtXN 58Kdm2zBG+7bPLamX0ov4yFsNPRnqbtGRLwbQhNJJsiRVnGBhemnJDs7x2NAjx4MZT GJ0f2QbM/CfBsIUXJ5GFjEBNP5WJeijl0EjcSioI= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Dan Carpenter , Borislav Petkov , Thor Thayer , James Morse , kernel-janitors@vger.kernel.org, linux-edac , Mauro Carvalho Chehab , Tony Luck , Sasha Levin Subject: [PATCH AUTOSEL 5.2 039/185] EDAC/altera: Use the proper type for the IRQ status bits Date: Sun, 22 Sep 2019 14:46:57 -0400 Message-Id: <20190922184924.32534-39-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190922184924.32534-1-sashal@kernel.org> References: <20190922184924.32534-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Dan Carpenter [ Upstream commit 8faa1cf6ed82f33009f63986c3776cc48af1b7b2 ] Smatch complains about the cast of a u32 pointer to unsigned long: drivers/edac/altera_edac.c:1878 altr_edac_a10_irq_handler() warn: passing casted pointer '&irq_status' to 'find_first_bit()' This code wouldn't work on a 64 bit big endian system because it would read past the end of &irq_status. [ bp: massage. ] Fixes: 13ab8448d2c9 ("EDAC, altera: Add ECC Manager IRQ controller support") Signed-off-by: Dan Carpenter Signed-off-by: Borislav Petkov Reviewed-by: Thor Thayer Cc: James Morse Cc: kernel-janitors@vger.kernel.org Cc: linux-edac Cc: Mauro Carvalho Chehab Cc: Tony Luck Link: https://lkml.kernel.org/r/20190624134717.GA1754@mwanda Signed-off-by: Sasha Levin --- drivers/edac/altera_edac.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/edac/altera_edac.c b/drivers/edac/altera_edac.c index 8816f74a22b4a..2d12b94eccda2 100644 --- a/drivers/edac/altera_edac.c +++ b/drivers/edac/altera_edac.c @@ -1829,6 +1829,7 @@ static void altr_edac_a10_irq_handler(struct irq_desc *desc) struct altr_arria10_edac *edac = irq_desc_get_handler_data(desc); struct irq_chip *chip = irq_desc_get_chip(desc); int irq = irq_desc_get_irq(desc); + unsigned long bits; dberr = (irq == edac->db_irq) ? 1 : 0; sm_offset = dberr ? A10_SYSMGR_ECC_INTSTAT_DERR_OFST : @@ -1838,7 +1839,8 @@ static void altr_edac_a10_irq_handler(struct irq_desc *desc) regmap_read(edac->ecc_mgr_map, sm_offset, &irq_status); - for_each_set_bit(bit, (unsigned long *)&irq_status, 32) { + bits = irq_status; + for_each_set_bit(bit, &bits, 32) { irq = irq_linear_revmap(edac->domain, dberr * 32 + bit); if (irq) generic_handle_irq(irq); -- 2.20.1