Re: [Xen-devel] RE: BSOD in GPLPV rev928 in xennet.sys

[Andreas Kinzler <ml-xen-devel@xxxxxx>]

> > -----Original Message-----
> > From: Andreas Kinzler [mailto:ml-xen-devel@xxxxxx]
> > Sent: Thursday, 9 June 2011 04:38
> > To: xen-devel@xxxxxxxxxxxxxxxxxxx; James Harper
> > Subject: BSOD in GPLPV rev928 in xennet.sys
> >
> > Hello James,
> >
> > on Windows 2008 R2 SP1 I get a BSOD on GPLPV setup. After some
> analyzing
> > I found that it is a "null ptr read" in the call to
> > NdisFreeToNPagedLookasideList. File is xennet6_tx.c line 336.
> >
> >         length = XenNet_QueryData(&pi, coalesce_remaining);
> >         va = NdisBufferVirtualAddressSafe(pi.curr_mdl,
> LowPagePriority);
> >         if (!va)
> >         {
> >           KdPrint((__DRIVER_NAME "     failed to map buffer va -
> partial
> > send\n"));
> >           coalesce_remaining = 0;
> >           remaining -= min(PAGE_SIZE, remaining);
> >           NdisFreeToNPagedLookasideList(&xi->tx_lookaside_list,
> > coalesce_buf);
> >         }
> >         else
> >         {
> I can't see how that situation could arise without there being some
> memory corruption somewhere... coalesce_buf is checked for NULL before
> the call to NdiFreeToNPageLookasideList. Did you get the "Failed to map
> buffer va - partial send" message in the logs?
I am not running any debuggers, I got the information from analyzing 
disassembled code listings and the minidump. I may have a look at 
debuggers (my time is somewhat limited).
Would you consider the rev928 version stable? What is the latest stable 
version in your opinion?
Regards Andreas

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel