From: David Howells <dhowells@redhat.com>
To: Oleg Nesterov <oleg@redhat.com>
Cc: dhowells@redhat.com, kpm@redhat.com,
Roland McGrath <roland@redhat.com>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] elf_core_dump: use rcu_read_lock() to access ->real_parent
Date: Wed, 29 Apr 2009 10:46:43 +0100 [thread overview]
Message-ID: <7146.1240998403@redhat.com> (raw)
In-Reply-To: <20090429090654.GA8234@redhat.com>
Oleg Nesterov <oleg@redhat.com> wrote:
> (on top of ptrace-s-parent-real_parent-in-binfmt_elf_fdpicc.patch)
>
> In theory it is not safe to dereference ->parent/real_parent without
> tasklist or rcu lock, we can race with re-parenting.
>
> Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: David Howells <dhowells@redhat.com>
next prev parent reply other threads:[~2009-04-29 9:46 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-04-29 9:06 [PATCH] elf_core_dump: use rcu_read_lock() to access ->real_parent Oleg Nesterov
2009-04-29 9:46 ` David Howells [this message]
-- strict thread matches above, loose matches on Subject: below --
2009-04-29 9:07 Oleg Nesterov
2009-04-29 19:46 ` Roland McGrath
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