RE: [Xen-users] Stop 8E with GPL PV Drivers

["James Harper" <james.harper@xxxxxxxxxxxxxxxx>]

Still in -pre19 mostly. In an extended test I can still get a BSoD too, so 
still a way to go.

-----Original Message-----
From: "Nick Couchman"<Nick.Couchman@xxxxxxxxx>
Sent: 31/10/08 11:26:04 PM
To: "james.harper@xxxxxxxxxxxxxxxx"<james.harper@xxxxxxxxxxxxxxxx>
Cc: "xen-users@xxxxxxxxxxxxxxxxxxx"<xen-users@xxxxxxxxxxxxxxxxxxx>, 
"Pekka.Panula@xxxxxxxx"<Pekka.Panula@xxxxxxxx>
Subject: RE: [Xen-users] Stop 8E with GPL PV Drivers

BTW - the 8 errors and 1 warning - are those ones in the pre18 version that you 
fixed in pre19, or still present in pre19?  Just curious...

-Nick

>>> "James Harper" <james.harper@xxxxxxxxxxxxxxxx> 10/31/08 2:02 AM >>>
-pre19 should fix this problem.

I have just run Microsoft's NDIS tester and it has found 8 errors and 1
warning. Nothing too major but worth fixing.

James

> -----Original Message-----
> From: Nick Couchman [mailto:Nick.Couchman@xxxxxxxxx]
> Sent: Friday, 31 October 2008 14:14
> To: James Harper
> Cc: xen-users@xxxxxxxxxxxxxxxxxxx; Pekka.Panula@xxxxxxxx
> Subject: RE: [Xen-users] Stop 8E with GPL PV Drivers
> 
> James,
> Here's the output with update5:
> 
> XenNet     Something went wrong... analyzing
> XenNet     total_length = 42
> XenNet     in_mdl = 86232020
> XenNet     MmGetSystemAddressForMdlSafe(in_mdl) = 86232040
> XenNet     MmGetMdlByteCount(in_mdl) = 14
> XenNet     in_mdl = 860FC020
> XenNet     MmGetSystemAddressForMdlSafe(in_mdl) = 860FC040
> XenNet     MmGetMdlByteCount(in_mdl) = 20
> XenNet     in_mdl = 86233020
> XenNet     MmGetSystemAddressForMdlSafe(in_mdl) = 86233060
> XenNet     MmGetMdlByteCount(in_mdl) = 8
> XenNet     in_mdl = 863DDD40
> XenNet     MmGetSystemAddressForMdlSafe(in_mdl) = 863DDCC0
> XenNet     MmGetMdlByteCount(in_mdl) = 0
> 
> *** Assertion failed: FALSE
> ***   Source File: c:\projects\win-pvdrivers.hg\xennet\xennet_tx.c,
line
> 200
> 
> If you need the full output, I'll be happy to send that along, too.
> 
> -Nick
> 
> >>> "James Harper" <james.harper@xxxxxxxxxxxxxxxx> 2008/10/30 20:35
>>>
> >
> > Okay, attached is the output from the debug session - looks like
> there's
> > some more info there.  Also, FYI, the file you uploaded isn't a zip
> file,
> > it's the actual .sys file.  I kept getting a message about a corrupt
> > archive file and finally used the "file" command on Linux and
> determined
> > that the zip file wasn't actually a zip file.  I was still able to
use
> it,
> > but just thought I'd let you know.
> >
> 
> D'oh. Yes I must have goofed somewhere. Pity, the version you used
> didn't have one extra debug statement in it. I have just uploaded
update
> 5, but maybe wait a bit and I'll have a proper fix for you.
> 
> The data that did come out tells me that there were 4 buffers
supplied:
> 14 bytes (Ethernet header)
> 20 bytes (IP header)
> 8 bytes (? - normally this would be the ICMP/TCP/UDP header, but I
guess
> you are using another protocol)
> 0 bytes (???)
> 
> I'm pretty sure I can see the problem - the original failing ASSERT
was
> to make sure that there was no data left over after we processed the
> expected data in the buffers. I did that by checking for another
buffer
> on the end. In your case though, even though there is another buffer
on
> the end, it has no data in it, so my check was making an invalid
> assumption.
> 
> James
> 
> 
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