From: "Pekka Enberg" <penberg@cs.helsinki.fi>
To: "Dave Jones" <davej@redhat.com>,
"Linux Kernel" <linux-kernel@vger.kernel.org>,
"Luca Risolia" <luca.risolia@studio.unibo.it>
Subject: Re: sn9c10x list corruption in 2.6.18.1
Date: Sun, 22 Oct 2006 23:37:06 +0300 [thread overview]
Message-ID: <84144f020610221337k2137a1a9xeb35a4bce48e152c@mail.gmail.com> (raw)
In-Reply-To: <20061022031145.GA24855@redhat.com>
On 10/22/06, Dave Jones <davej@redhat.com> wrote:
> What's odd here is that we have a list entry still on a list, with its ->next set to
> LIST_POISON2, which should only ever happen after an entry has been removed from
> a list. The list manipulation in cache_alloc_refill is all done under l3->list_lock,
> so I'm puzzled how this is possible.
>
> I found one area in the driver where we do list manipulation without any locking,
> but I'm not entirely convinced that this is the source of the bug yet.
But I don't see how that could cause a slab list to go bad. An
old-fashioned slab corruption sounds more like it. Does the the kernel
have CONFIG_SLAB_DEBUG enabled?
Pekka
next prev parent reply other threads:[~2006-10-22 20:37 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-10-22 3:11 Dave Jones
2006-10-22 11:46 ` Luca Risolia
2006-10-22 18:15 ` Dave Jones
2006-10-22 21:22 ` Luca Risolia
2006-10-23 2:35 ` teunis
2006-10-23 11:37 ` Luca Risolia
2006-10-23 2:39 ` teunis
2006-10-22 20:37 ` Pekka Enberg [this message]
2006-10-22 20:54 ` Dave Jones
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