linux-kernel - Re: [PATCH 1/2] kthread: make struct kthread kmalloc'ed

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Message-ID: <alpine.DEB.2.20.1610282046500.5053@nanos>
Date:   Fri, 28 Oct 2016 20:48:54 +0200 (CEST)
From:   Thomas Gleixner <tglx@...utronix.de>
To:     Oleg Nesterov <oleg@...hat.com>
cc:     Andy Lutomirski <luto@...capital.net>,
        Roman Pen <roman.penyaev@...fitbricks.com>,
        Andy Lutomirski <luto@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>, Tejun Heo <tj@...nel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/2] kthread: make struct kthread kmalloc'ed

On Fri, 28 Oct 2016, Oleg Nesterov wrote:

> I still think we should kill struct kthread in its current form, but this
> needs cleanups outside of kthread.c.
> 
> So make it kmalloc'ed for now to avoid the problems with stack corruption,
> for example the crashed kthread will likely OOPS again because its .exited
> was destroyed by rewind_stack_do_exit().
> 
> Signed-off-by: Oleg Nesterov <oleg@...hat.com>

Reviewed-by: Thomas Gleixner <tglx@...utronix.de>