From: Andrew Morton <akpm@osdl.org>
To: Anton Blanchard <anton@samba.org>
Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: 2.6.3-rc2-mm1
Date: Thu, 12 Feb 2004 04:09:10 -0800 [thread overview]
Message-ID: <20040212040910.3de346d4.akpm@osdl.org> (raw)
In-Reply-To: <20040212115718.GF25922@krispykreme>
Anton Blanchard <anton@samba.org> wrote:
>
>
> > This kernel and also 2.6.3-rc1-mm1 have a nasty bug which causes
> > current->preempt_count to be decremented by one on each hard IRQ. It
> > manifests as a BUG() in the slab code early in boot.
> >
> > Disabling CONFIG_DEBUG_SPINLOCK_SLEEP will fix this up. Do not use this
> > feature on ia32, for it is bust.
>
> A few questions spring to mind. Like who wrote that dodgy patch?
The dog wrote my homework?
> And any ideas how said person (who will remain nameless) broke ia32?
Not really. I spent a couple of hours debugging the darn thing, then gave
up and used binary search to find the offending patch.
<looks>
include/asm-i386/hardirq.h:IRQ_EXIT_OFFSET needs treatment, I bet.
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next prev parent reply other threads:[~2004-02-12 12:09 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-02-12 9:57 2.6.3-rc2-mm1 Andrew Morton
2004-02-12 11:13 ` 2.6.3-rc2-mm1 Andrew Morton
2004-02-12 11:57 ` 2.6.3-rc2-mm1 Anton Blanchard
2004-02-12 12:09 ` Andrew Morton [this message]
2004-02-12 14:40 ` 2.6.3-rc2-mm1 Zwane Mwaikambo
2004-02-12 14:46 ` 2.6.3-rc2-mm1 Anton Blanchard
2004-02-12 14:47 ` 2.6.3-rc2-mm1 Anton Blanchard
2004-02-12 11:24 ` 2.6.3-rc2-mm1 Nick Piggin
2004-02-12 14:46 ` 2.6.3-rc2-mm1 Zwane Mwaikambo
2004-02-12 15:40 ` 2.6.3-rc2-mm1 Mark Haverkamp
2004-02-12 21:38 ` 2.6.3-rc2-mm1 Andrew Morton
2004-02-12 22:33 ` 2.6.3-rc2-mm1 Nick Piggin
2004-02-12 17:06 ` 2.6.3-rc2-mm1 (compile stats) John Cherry
2004-02-12 18:43 ` 2.6.3-rc2-mm1 Alistair John Strachan
2004-02-13 0:04 ` 2.6.3-rc2-mm1 Torrey Hoffman
2004-02-14 10:36 ` 2.6.3-rc2-mm1 Terje Kvernes
2004-02-13 21:04 ` [PATCH 2.6.3-rc2-mm1] Daniel McNeil
2004-02-14 5:27 ` 2.6.3-rc2-mm1 Glenn Johnson
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