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=-12.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,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 2D31BC433E0 for ; Wed, 17 Mar 2021 14:25:09 +0000 (UTC) Received: from desiato.infradead.org (desiato.infradead.org [90.155.92.199]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 9EDE364F3C for ; Wed, 17 Mar 2021 14:25:08 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 9EDE364F3C Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=huawei.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=desiato.20200630; h=Sender:Content-Transfer-Encoding :Content-Type:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:Message-ID:Date:Subject:CC:To:From: Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender :Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Owner; bh=8mbreMkJrznJBpdP2w61+rLy70DhizTAJs9hQtBFhuI=; b=mb8YqyuKH1qxkbtrpXZJn6tGwo 44R2VbWtIfoEX/vMZkkfw+/gkRDOPGIWirfKWGZRx1w5EzBin1RzD+KBce7Z6Cid0wTkrNPnhdoaT zm6Jho4LbJ7q+H/RFX63/hG6Zg3C3yOVxx5QSWuAzp7U5FoGSbtd35kxAQeFq/tYG6lxp23doPIJg v+X8NLRyYcl2zd9spyoiYfzXILlw3M5KxcjJwVgfOz4NbZ+XCzUxahtY0lpeUyROu/Dg6pCRjGywf NaZvHB6EVTuGZlq0vJCuk8R3/4APaEDj5mG58KSsknAReFNdwuFx3U1/0pDO1eprWka7HnzuQlsCx 4TUfzd8A==; Received: from localhost ([::1] helo=desiato.infradead.org) by desiato.infradead.org with esmtp (Exim 4.94 #2 (Red Hat Linux)) id 1lMX51-003FbA-6M; Wed, 17 Mar 2021 14:23:23 +0000 Received: from szxga07-in.huawei.com ([45.249.212.35]) by desiato.infradead.org with esmtps (Exim 4.94 #2 (Red Hat Linux)) id 1lMX4u-003FZ4-Ur for linux-arm-kernel@lists.infradead.org; Wed, 17 Mar 2021 14:23:20 +0000 Received: from DGGEMS409-HUB.china.huawei.com (unknown [172.30.72.58]) by szxga07-in.huawei.com (SkyGuard) with ESMTP id 4F0slb2WyHz90YY; Wed, 17 Mar 2021 22:21:15 +0800 (CST) Received: from mdc.huawei.com (10.175.112.208) by DGGEMS409-HUB.china.huawei.com (10.3.19.209) with Microsoft SMTP Server id 14.3.498.0; Wed, 17 Mar 2021 22:23:01 +0800 From: Chen Jun To: , CC: , , , Subject: [PATCH 0/2] Fix page_owner broken on arm64 Date: Wed, 17 Mar 2021 14:20:48 +0000 Message-ID: <20210317142050.57712-1-chenjun102@huawei.com> X-Mailer: git-send-email 2.9.4 MIME-Version: 1.0 X-Originating-IP: [10.175.112.208] X-CFilter-Loop: Reflected X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210317_142317_615596_FAD915B8 X-CRM114-Status: UNSURE ( 5.17 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On arm64, cat /sys/kernel/debug/page_owner All pages return the same stack stack_trace_save+0x4c/0x78 register_early_stack+0x34/0x70 init_page_owner+0x34/0x230 page_ext_init+0x1bc/0x1dc The reason is arch_stack_walk save 2 more entries than before. To fix it, add skip in arch_stack_walk *** BLURB HERE *** 1. Prepare for 2, move stacktrace_cookie to .h 2. Fix the problem Chen Jun (2): stacktrace: Move struct stacktrace_cookie to stacktrace.h arm64: stacktrace: Add skip when task == current arch/arm64/kernel/stacktrace.c | 5 +++-- include/linux/stacktrace.h | 7 +++++++ kernel/stacktrace.c | 7 ------- 3 files changed, 10 insertions(+), 9 deletions(-) -- 2.9.4 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel