linux-kernel - [Question PATCH 0/1] mm: crash in vmalloc_to_page

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Message-ID: <20180222141324.5696-1-igor.stoppa@huawei.com>
Date:   Thu, 22 Feb 2018 16:13:23 +0200
From:   Igor Stoppa <igor.stoppa@...wei.com>
To:     <mhocko@...nel.org>
CC:     <willy@...radead.org>, <linux-mm@...ck.org>,
        <linux-kernel@...r.kernel.org>,
        Igor Stoppa <igor.stoppa@...wei.com>
Subject: [Question PATCH 0/1] mm: crash in vmalloc_to_page - misuse or bug?

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