linux-kernel - Re: [RFC] proc, coredump: add CoreDumping flag to /proc/pid/status

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Message-ID: <20170913220537.GA4172@castle>
Date:   Wed, 13 Sep 2017 15:05:37 -0700
From:   Roman Gushchin <guro@...com>
To:     <linux-kernel@...r.kernel.org>
CC:     Alexander Viro <viro@...iv.linux.org.uk>,
        Ingo Molnar <mingo@...nel.org>, <kernel-team@...com>
Subject: Re: [RFC] proc, coredump: add CoreDumping flag to /proc/pid/status

On Thu, Sep 07, 2017 at 12:17:15PM +0100, Roman Gushchin wrote:
> Right now there is no convenient way to check if a process is being
> coredumped at the moment.
> 
> It might be necessary to recognize such state to prevent killing
> the process and getting a broken coredump.
> Writing a large core might take significant time, and the process
> is unresponsive during it, so it might be killed by timeout,
> if another process is monitoring and killing/restarting
> hanging tasks.
> 
> To provide an ability to detect if a process is in the state of
> being coreduped, we can expose a boolean CoreDumping flag
> in /proc/pid/status.
> 

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