linux-kernel - Re: kernel: signal: NULL ptr deref when killing process

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Message-ID: <20140820153009.GA14178@redhat.com>
Date:	Wed, 20 Aug 2014 17:30:09 +0200
From:	Oleg Nesterov <oleg@...hat.com>
To:	Sasha Levin <sasha.levin@...cle.com>,
	David Howells <dhowells@...hat.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>, richard@....at,
	Dave Jones <davej@...hat.com>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: kernel: signal: NULL ptr deref when killing process

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.

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