linux-kernel - Re: 2.6.22-rc2 amd64 slab allocator bug reported at boot time

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Message-ID: <p73bqg9cf7w.fsf@bingen.suse.de>
Date:	25 May 2007 13:30:59 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	Stefan Richter <stefanr@...6.in-berlin.de>
Cc:	Andrew Paprocki <andrew.m.paprocki@...il.com>,
	linux-kernel@...r.kernel.org
Subject: Re: 2.6.22-rc2 amd64 slab allocator bug reported at boot time

Stefan Richter <stefanr@...6.in-berlin.de> writes:

> Andrew Paprocki wrote:
> ...
> > BUG: at /usr/src/linux-2.6.22-rc2/mm/slab.c:777 __find_general_cachep()
> > 
> > Call Trace:
> >  [<ffffffff802743dc>] __kmalloc+0x3e/0xbe
> >  [<ffffffff8021d65f>] cache_k8_northbridges+0x7f/0xf0
> >  [<ffffffff8052bb53>] gart_iommu_init+0x13/0x4f8
> >  [<ffffffff802d15e1>] kobject_shadow_add+0xef/0x1a2
> >  [<ffffffff802d13fb>] kobject_get+0x12/0x17
> >  [<ffffffff8033b2a4>] class_register+0x10a/0x13d
> >  [<ffffffff80527964>] pci_iommu_init+0x9/0x12
> ...
> 
> This is a known "zero allocation" problem, patch available.
> http://kernelnewbies.org/known_regressions#line-249

It should be already fixed in mainline

-Andi
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