linux-kernel - Re: tty_ldisc_try_get(): BUG kmalloc-8: Poison overwritten

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Message-ID: <84144f020906140130w189239c0l56dccad99529aa7@mail.gmail.com>
Date:	Sun, 14 Jun 2009 11:30:08 +0300
From:	Pekka Enberg <penberg@...helsinki.fi>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Alan Cox <alan@...rguk.ukuu.org.uk>, linux-kernel@...r.kernel.org,
	Vegard Nossum <vegard.nossum@...il.com>,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Subject: Re: tty_ldisc_try_get(): BUG kmalloc-8: Poison overwritten

On Sun, Jun 14, 2009 at 11:20 AM, Pekka Enberg<penberg@...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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