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Date: Tue, 7 Mar 2006 11:57:20 -0500
From: Dave Jones <davej@redhat.com>
To: Dave Peterson <dsp@llnl.gov>
Cc: Linux Kernel <linux-kernel@vger.kernel.org>, norsk5@xmission.com,
       dthompson@linuxnetworx.com
Subject: Re: edac slab corruption.
Message-ID: <20060307165720.GB5341@redhat.com>
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	Dave Peterson <dsp@llnl.gov>,
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On Tue, Mar 07, 2006 at 08:53:02AM -0800, Dave Peterson wrote:
 > On Saturday 04 March 2006 23:43, Dave Jones wrote:
 > > rmmod e752x_edac edac_mc
 > > Wait a few seconds...
 > >
 > > EDAC MC0: Removed device 0 for "e752x_edac" E7525: PCI 0000:00:00.0
 > > Slab corruption: start=ffff81003fc5a000, len=4096
 > >
 > > Call Trace: <ffffffff8017bcab>{check_poison_obj+121}
 > >        <ffffffff802028a8>{kobject_uevent+676}
 > > <ffffffff8017be34>{cache_alloc_debugcheck_after+48}
 > > <ffffffff802028a8>{kobject_uevent+676}
 > > <ffffffff8017dd52>{__kmalloc_track_caller+301}
 > > <ffffffff802db731>{__alloc_skb+97} <ffffffff80202701>{kobject_uevent+253}
 > > <ffffffff802028a8>{kobject_uevent+676}
 > > <ffffffff80201fd6>{kobject_unregister+14}
 > > <ffffffff8026f273>{bus_remove_driver+126}
 > > <ffffffff8027004a>{driver_unregister+9}
 > > <ffffffff8020f4a8>{pci_unregister_driver+16}
 > > <ffffffff8014ec37>{sys_delete_module+551}
 > > <ffffffff8010dbdc>{syscall_trace_enter+156}
 > > <ffffffff8010a91c>{tracesys+209} 0f0: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b
 > > 6a 6b 6b 6b
 > >
 > > 		Dave
 > 
 > Can this behavior be reproduced relatively easily? 

yep.

 > One thing that
 > may be worth checking is whether this reproduces with a
 > 2.6.16-rc5-mm2 kernel.  Some EDAC bug fixes were added to that kernel

I've got zero time to jump on this right now -- trying to get FC5 shippable :-/
I'll try and get back to it at some point.

		Dave

-- 
http://www.codemonkey.org.uk
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