linux-kernel - Re: [PATCH] delayacct: Fix crash in delayacct_blkio

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Message-ID: <20180724193042.GR1934745@devbig577.frc2.facebook.com>
Date:   Tue, 24 Jul 2018 12:30:42 -0700
From:   Tejun Heo <tj@...nel.org>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     Balbir Singh <bsingharora@...il.com>, linux-kernel@...r.kernel.org,
        kernel-team@...com
Subject: Re: [PATCH] delayacct: Fix crash in delayacct_blkio_end() after
 delayacct init failure

Hello, Andrew.

On Tue, Jul 24, 2018 at 12:29:13PM -0700, Andrew Morton wrote:
> How did you make this happen, btw?  Fault injection, or did a small
> GFP_KERNEL allocation fail?

We have a group of machines which are pushing memory really hard and
this actually triggered in prod on several of them.

Thanks.

-- 
tejun