From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754402AbeDMLeK (ORCPT ); Fri, 13 Apr 2018 07:34:10 -0400 Received: from smtp.codeaurora.org ([198.145.29.96]:38928 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753114AbeDMLeJ (ORCPT ); Fri, 13 Apr 2018 07:34:09 -0400 DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org DED196021A Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=none smtp.mailfrom=cpandya@codeaurora.org From: Chintan Pandya To: vbabka@suse.cz, labbott@redhat.com, catalin.marinas@arm.com, hannes@cmpxchg.org, f.fainelli@gmail.com, xieyisheng1@huawei.com, ard.biesheuvel@linaro.org, richard.weiyang@gmail.com, byungchul.park@lge.com Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, Chintan Pandya Subject: [PATCH 0/2] vunmap and debug objects Date: Fri, 13 Apr 2018 17:03:52 +0530 Message-Id: <1523619234-17635-1-git-send-email-cpandya@codeaurora.org> X-Mailer: git-send-email 1.9.1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org I'm not entirely sure, how debug objects are really useful in vmalloc framework. I'm assuming they are useful in some ways. So, there are 2 issues in that. First patch is avoiding possible race scenario and second patch passes _proper_ args in debug object APIs. Both these patches can help debug objects to be in consistent state. We've observed some list corruptions in debug objects. However, no claims that these patches will be fixing them. If one has an opinion that debug object has no use in vmalloc framework, I would raise a patch to remove them from the vunmap leg. Chintan Pandya (2): mm: vmalloc: Avoid racy handling of debugobjects in vunmap mm: vmalloc: Pass proper vm_start into debugobjects mm/vmalloc.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) -- Qualcomm India Private Limited, on behalf of Qualcomm Innovation Center, Inc., is a member of Code Aurora Forum, a Linux Foundation Collaborative Project