linux-kernel - Re: [PATCH v2] kernel: release ptraced tasks before zap_pid_ns

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Message-ID: <20190111153915.GA31013@redhat.com>
Date:   Fri, 11 Jan 2019 16:39:16 +0100
From:   Oleg Nesterov <oleg@...hat.com>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     Andrei Vagin <avagin@...il.com>, linux-kernel@...r.kernel.org,
        "Eric W. Biederman" <ebiederm@...ssion.com>
Subject: Re: [PATCH v2] kernel: release ptraced tasks before
 zap_pid_ns_processes

On 01/10, Andrew Morton wrote:
>
> > Fixes: 7c8bd2322c7f ("exit: ptrace: shift "reap dead" code from exit_ptrace() to forget_original_parent()")
> >
> > Cc: "Eric W. Biederman" <ebiederm@...ssion.com>
> > Cc: Andrew Morton <akpm@...ux-foundation.org>
> > Signed-off-by: Oleg Nesterov <oleg@...hat.com>
> > Signed-off-by: Andrei Vagin <avagin@...il.com>
>
> Does this warrant a -stable backport?  7c8bd2322c7f was 4+ years ago...

Agreed, the problem is trivially reproducible.

Oleg.