Re: [Xen-devel] Testing status of HVM (Intel VT) on 64bit XEN unstable c/s 11686

[Ed Smith <esmith@xxxxxxxxxxxxxxx>]

OK it took a lot longer to reproduce but I did hit the
Error: shadow lock held by shadow_update_cr3 crash running
mtest01 on a RHEL4U2-32bit SMP HVM guest.  I was unable to
reproduce any of the other shadow crashes.

Details in my next test report post for c/s 11731.

Ed


Ed Smith wrote:

> Thanks Tim,
>
> I'm testing with c/s 11731 now and it looks good.  I'll be posting my
> test report shortly.
>
> Ed
>
> -----Original Message-----
> From: Tim Deegan [mailto:Tim.Deegan@xxxxxxxxxxxxx] 
> Sent: Monday, October 09, 2006 12:05 PM
> To: Ed Smith
> Cc: Xen Devel
> Subject: Re: [Xen-devel] Testing status of HVM (Intel VT) on 64bit XEN
> unstable c/s 11686
>
> Hi Ed,
>
> Changeset 11729:6e932f32662c of xen-unstable should fix these crashes.
>
> Cheers,
>
> Tim.
>
> At 09:22 -0400 on 04 Oct (1159953769), Ed Smith wrote:
> > These bugs happen every time for me.  To reproduce the bug I do the
> > following:
> >
> > - Boot a release build of XEN
> > - Launch a RHEL4U2-32bit HVM guest, 256MB, 2CPU SMP kernel, 4GB swap 
> > file, local SATA disk
> > - ssh into the guest and run the following test:
> >   # while [ 1 ]; do mtest01 -v -p80; done
> > - Within 1 or 2 passes of the test I hit one of the several crashes 
> > reported.
> > - Nothing else is running on the guest and this is the only guest 
> > running on XEN.
> > Hope this helps,
> > Ed
> >
> >
> > -----Original Message-----
> > From: Tim Deegan [mailto:Tim.Deegan@xxxxxxxxxxxxx]
> > Sent: Wednesday, October 04, 2006 9:13 AM
> > To: Ed Smith
> > Cc: Xen Devel
> > Subject: Re: [Xen-devel] Testing status of HVM (Intel VT) on 64bit XEN
> > unstable c/s 11686
> >
> > Hi Ed,
> >
> > At 16:05 -0400 on 03 Oct (1159891531), Ed Smith wrote:
> > > - NEW: Domain crash running ltp "mtest01 -p80" on 32bit SMP
> > >   HVM guest and then XEN locked up requiring a hard reset:
> > >   domain_crash_sync called from private.h:495 (failure.8)
> > > - XEN crash running ltp "mtest01 -p80" on 32bit SMP HVM guest:
> > >   BUG at multi.c:2967 from sh_page_fault__shadow_3_guest_3 
> > > (failure.3)
> > We're having some difficulty reproducing these failures.  Are you 
> > running full ltp tests or just the mtest01 binary?  Are you running 
> > anything else in the VM at the time?  How often do the failures occur?
> > Was there a difference between the tests which caused the two failures
> > or did they happen on different runs of the same test?
> >
> > Cheers,
> >
> > Tim.

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