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From: Gerd Knorr <kraxel@suse.de>
To: xen-devel@lists.xensource.com
Subject: Re: bug: slab corruption (net backend?)
Date: 07 Jul 2005 17:54:07 +0200	[thread overview]
Message-ID: <873bqqhasg.fsf@bytesex.org> (raw)
In-Reply-To: <20050707094132.GA29339@bytesex>

Gerd Knorr <kraxel@suse.de> writes:

> With the small debug patch below and CONFIG_DEBUG_SLAB=y I get
> plenty of these messages in the dom0 kernel log as soon as I
> start a domU:
> 
>   Slab corruption: start=dc423000, len=4096
>   Slab name: xen-skb
>   000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00

After digging in the netback code I'm not sure any more this is a real
bug.  Could also be the slab debugging can deal with the page mapping
tricks the netback driver does when sending/receiving packets.  The
start address mentioned referes to a page allocated via alloc_mfn() in
netback.c ...

  Gerd

-- 
panic("it works"); /* avoid being flooded with debug messages */

      parent reply	other threads:[~2005-07-07 15:54 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-07-07  9:41 bug: slab corruption (net backend?) Gerd Knorr
2005-07-07 10:11 ` Steven Hand
2005-07-07 11:35   ` Gerd Knorr
2005-07-07 12:05     ` Keir Fraser
2005-07-07 12:22       ` Gerd Knorr
2005-07-07 12:48         ` Gerd Knorr
2005-07-07 13:17         ` Gerd Knorr
2005-07-07 14:05           ` Keir Fraser
2005-07-07 14:18             ` Gerd Knorr
2005-07-07 14:41               ` Gerd Knorr
2005-07-07 16:06           ` Nivedita Singhvi
2005-07-11 13:25             ` Gerd Knorr
2005-07-11 13:37               ` Keir Fraser
2005-07-11 14:29                 ` Bin Ren
2005-07-07 15:54 ` Gerd Knorr [this message]

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