linux-kernel - Re: [PATCH] coredump: fix unfreezable coredumping task

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Message-ID: <20161003094141.GB9131@amd>
Date:   Mon, 3 Oct 2016 11:41:41 +0200
From:   Pavel Machek <pavel@....cz>
To:     Andrey Ryabinin <aryabinin@...tuozzo.com>
Cc:     Alexander Viro <viro@...iv.linux.org.uk>,
        Tejun Heo <tj@...nel.org>,
        "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Oleg Nesterov <oleg@...hat.com>, linux-pm@...r.kernel.org,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        stable@...r.kernel.org
Subject: Re: [PATCH] coredump: fix unfreezable coredumping task

On Fri 2016-09-30 11:50:34, Andrey Ryabinin wrote:
> It could be not possible to freeze coredumping task when it waits
> for 'core_state->startup' completion, because threads are frozen
> in get_signal() before they got a chance to complete 'core_state->startup'.
> 
> Use freezer_do_not_count() to tell freezer to ignore coredumping
> task while it waits for core_state->startup completion.
> 
> Signed-off-by: Andrey Ryabinin <aryabinin@...tuozzo.com>
> Cc: stable@...r.kernel.org

Acked-by: Pavel Machek <pavel@....cz>


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