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Date: Wed, 20 Aug 2014 17:30:09 +0200
From: Oleg Nesterov <oleg@redhat.com>
To: Sasha Levin <sasha.levin@oracle.com>, David Howells <dhowells@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>, richard@nod.at,
        Dave Jones <davej@redhat.com>, LKML <linux-kernel@vger.kernel.org>
Subject: Re: kernel: signal: NULL ptr deref when killing process
Message-ID: <20140820153009.GA14178@redhat.com>
References: <53F48402.4080302@oracle.com> <20140820141252.GA27301@redhat.com> <20140820150619.GA12706@redhat.com>
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On 08/20, Oleg Nesterov wrote:
>
> Hmm. I'll recheck and report tomorrow, but it seems that I found a bug:
> bad_fork_free_pid()->free_pid() looks wrong.

No, sorry for noise, I was wrong.

> David, any other reason why ->real_cred can be NULL ? (assuming that I interpret
> this asm correctly).

Oleg.