From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932839AbeBVOON (ORCPT ); Thu, 22 Feb 2018 09:14:13 -0500 Received: from lhrrgout.huawei.com ([194.213.3.17]:27178 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S932604AbeBVOOM (ORCPT ); Thu, 22 Feb 2018 09:14:12 -0500 From: Igor Stoppa To: CC: , , , Igor Stoppa Subject: [Question PATCH 0/1] mm: crash in vmalloc_to_page - misuse or bug? Date: Thu, 22 Feb 2018 16:13:23 +0200 Message-ID: <20180222141324.5696-1-igor.stoppa@huawei.com> X-Mailer: git-send-email 2.14.1 MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.122.225.51] X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org While trying to change the code of find_vm_area, I got an automated notification that my code was breaking the testing of i386, based on the 0-day testing automation from 01.org I started investigating the issue and noticed that it seems to be reproducible also on top of plain 4.16-rc2, without any of my patches. I'm still not 100% sure that I'm doing something sane, but I thought it might be good to share the finding. The patch contains both a minimal change, to trigger the crash, and a snippet of the log of the crash i get. Igor Stoppa (1): crash vmalloc_to_page() mm/vmalloc.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) -- 2.14.1