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In-Reply-To: <4A34B2E2.7080702@cs.helsinki.fi>
References: <20090614081052.GA9276@elte.hu> <4A34B2E2.7080702@cs.helsinki.fi>
Date: Sun, 14 Jun 2009 11:30:08 +0300
Message-ID: <84144f020906140130w189239c0l56dccad99529aa7@mail.gmail.com>
Subject: Re: tty_ldisc_try_get(): BUG kmalloc-8: Poison overwritten
From: Pekka Enberg <penberg@cs.helsinki.fi>
To: Ingo Molnar <mingo@elte.hu>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>, linux-kernel@vger.kernel.org,
       Vegard Nossum <vegard.nossum@gmail.com>,
       "Rafael J. Wysocki" <rjw@sisk.pl>,
       Andrew Morton <akpm@linux-foundation.org>,
       Linus Torvalds <torvalds@linux-foundation.org>,
       Peter Zijlstra <a.p.zijlstra@chello.nl>
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On Sun, Jun 14, 2009 at 11:20 AM, Pekka Enberg<penberg@cs.helsinki.fi> wrote:
> You could add something like
>
> ?WARN_ON(ld->refcount == 0x6b)
>
> to tty_ldisc_deref() to see if that triggers.

Make that

    WARN_ON(ld->refcount == (int)0xa56b6b6b)

instead.
                                Pekka
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