From: Thomas Gleixner <tglx@linutronix.de>
To: "Luis Claudio R. Goncalves" <lclaudio@uudg.org>
Cc: rt-users <linux-rt-users@vger.kernel.org>,
Ingo Molnar <mingo@elte.hu>,
dmarlin@redhat.com
Subject: Re: slab_irq_enable is receiving corrupted / deleted list entries
Date: Sun, 4 Oct 2009 19:08:05 +0200 (CEST) [thread overview]
Message-ID: <alpine.LFD.2.00.0910041905040.2646@localhost.localdomain> (raw)
In-Reply-To: <20091002144711.GF3466@uudg.org>
Luis,
On Fri, 2 Oct 2009, Luis Claudio R. Goncalves wrote:
> Hello,
>
> The function slab_irq_enable is receiving list entries that are already
> deleted. In fact, they seem to be corrupted as entry->next is pointing
> to LIST_POISON1, meaning that it was already deleted but entry->prev
> points to a valid address.
>
> This email has debug data I have collected, the original report and the
> patch I used to gather data. That was observed on 2.6.31-rt11.
The debug output is not really helpful. It tells us that we are
looking at a list corruption.
Can you please add tracing_off() to that error code path and try to
reproduce the problem with the function tracer enabled ? That might us
give an idea what fiddled with that list entry.
Thanks,
tglx
prev parent reply other threads:[~2009-10-04 17:09 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-02 14:47 slab_irq_enable is receiving corrupted / deleted list entries Luis Claudio R. Goncalves
2009-10-04 17:08 ` Thomas Gleixner [this message]
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