From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sasha Levin Subject: [PATCH AUTOSEL 4.14 042/123] iommu/io-pgtable-arm-v7s: Only kmemleak_ignore L2 tables Date: Wed, 27 Mar 2019 14:15:06 -0400 Message-ID: <20190327181628.15899-42-sashal@kernel.org> References: <20190327181628.15899-1-sashal@kernel.org> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20190327181628.15899-1-sashal-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: iommu-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org Errors-To: iommu-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org To: linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, stable-u79uwXL29TY76Z2rM5mHXA@public.gmane.org Cc: Sasha Levin , iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org, Nicolas Boichat , Joerg Roedel List-Id: iommu@lists.linux-foundation.org From: Nicolas Boichat [ Upstream commit 032ebd8548c9d05e8d2bdc7a7ec2fe29454b0ad0 ] L1 tables are allocated with __get_dma_pages, and therefore already ignored by kmemleak. Without this, the kernel would print this error message on boot, when the first L1 table is allocated: [ 2.810533] kmemleak: Trying to color unknown object at 0xffffffd652388000 as Black [ 2.818190] CPU: 5 PID: 39 Comm: kworker/5:0 Tainted: G S 4.19.16 #8 [ 2.831227] Workqueue: events deferred_probe_work_func [ 2.836353] Call trace: ... [ 2.852532] paint_ptr+0xa0/0xa8 [ 2.855750] kmemleak_ignore+0x38/0x6c [ 2.859490] __arm_v7s_alloc_table+0x168/0x1f4 [ 2.863922] arm_v7s_alloc_pgtable+0x114/0x17c [ 2.868354] alloc_io_pgtable_ops+0x3c/0x78 ... Fixes: e5fc9753b1a8314 ("iommu/io-pgtable: Add ARMv7 short descriptor support") Signed-off-by: Nicolas Boichat Acked-by: Will Deacon Signed-off-by: Joerg Roedel Signed-off-by: Sasha Levin --- drivers/iommu/io-pgtable-arm-v7s.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/iommu/io-pgtable-arm-v7s.c b/drivers/iommu/io-pgtable-arm-v7s.c index 29b7a6755fcd..56368c8bd791 100644 --- a/drivers/iommu/io-pgtable-arm-v7s.c +++ b/drivers/iommu/io-pgtable-arm-v7s.c @@ -217,7 +217,8 @@ static void *__arm_v7s_alloc_table(int lvl, gfp_t gfp, if (dma != phys) goto out_unmap; } - kmemleak_ignore(table); + if (lvl == 2) + kmemleak_ignore(table); return table; out_unmap: -- 2.19.1 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=-9.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,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 284ADC43381 for ; Wed, 27 Mar 2019 18:52:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E2C0E205C9 for ; Wed, 27 Mar 2019 18:52:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1553712739; bh=FYMtKjHmBTqNTrOMBJX7ZRwd93MDXAZLnKlWJmMW6XA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=OeMV3oPeU0GBMOpG0/Qp57vauIdMwz1c8CsfPqkV7izr3FIQHnj16h/7EYihJJQ6b 2fMXzogLAXV1LRPROA9fZvL0t/59Bwwx/jgPjjrKsKPR5QAd00ApmOOU2khfUmT4pk TtxbQoiJHfhkyYovQv0fa4vN5FObmQPA8K/V9ytI= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2390729AbfC0SwR (ORCPT ); Wed, 27 Mar 2019 14:52:17 -0400 Received: from mail.kernel.org ([198.145.29.99]:34330 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2390371AbfC0SRs (ORCPT ); Wed, 27 Mar 2019 14:17:48 -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 8B1922087C; Wed, 27 Mar 2019 18:17:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1553710668; bh=FYMtKjHmBTqNTrOMBJX7ZRwd93MDXAZLnKlWJmMW6XA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=YMQW32wZXlSTJnoXokTRBFT5XebEhFwMVBesF0mTRJqEYDCfuuek/f0fVvV+Rg7Nk hNnTLZiTN8GbU4mVdaGQMewLqK+BmOC1QVEn+BudrvLaWfhBGY8YZrF3nCrt1C0KmZ DZFkFfU1YGHfwi4yaSX7cKJZbyW67ShnWlG7coN8= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Nicolas Boichat , Joerg Roedel , Sasha Levin , iommu@lists.linux-foundation.org Subject: [PATCH AUTOSEL 4.14 042/123] iommu/io-pgtable-arm-v7s: Only kmemleak_ignore L2 tables Date: Wed, 27 Mar 2019 14:15:06 -0400 Message-Id: <20190327181628.15899-42-sashal@kernel.org> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20190327181628.15899-1-sashal@kernel.org> References: <20190327181628.15899-1-sashal@kernel.org> MIME-Version: 1.0 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: Nicolas Boichat [ Upstream commit 032ebd8548c9d05e8d2bdc7a7ec2fe29454b0ad0 ] L1 tables are allocated with __get_dma_pages, and therefore already ignored by kmemleak. Without this, the kernel would print this error message on boot, when the first L1 table is allocated: [ 2.810533] kmemleak: Trying to color unknown object at 0xffffffd652388000 as Black [ 2.818190] CPU: 5 PID: 39 Comm: kworker/5:0 Tainted: G S 4.19.16 #8 [ 2.831227] Workqueue: events deferred_probe_work_func [ 2.836353] Call trace: ... [ 2.852532] paint_ptr+0xa0/0xa8 [ 2.855750] kmemleak_ignore+0x38/0x6c [ 2.859490] __arm_v7s_alloc_table+0x168/0x1f4 [ 2.863922] arm_v7s_alloc_pgtable+0x114/0x17c [ 2.868354] alloc_io_pgtable_ops+0x3c/0x78 ... Fixes: e5fc9753b1a8314 ("iommu/io-pgtable: Add ARMv7 short descriptor support") Signed-off-by: Nicolas Boichat Acked-by: Will Deacon Signed-off-by: Joerg Roedel Signed-off-by: Sasha Levin --- drivers/iommu/io-pgtable-arm-v7s.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/iommu/io-pgtable-arm-v7s.c b/drivers/iommu/io-pgtable-arm-v7s.c index 29b7a6755fcd..56368c8bd791 100644 --- a/drivers/iommu/io-pgtable-arm-v7s.c +++ b/drivers/iommu/io-pgtable-arm-v7s.c @@ -217,7 +217,8 @@ static void *__arm_v7s_alloc_table(int lvl, gfp_t gfp, if (dma != phys) goto out_unmap; } - kmemleak_ignore(table); + if (lvl == 2) + kmemleak_ignore(table); return table; out_unmap: -- 2.19.1