Re: [xen-unstable-smoke test] 169781: regressions - FAIL

[Julien Grall <julien@xxxxxxx>]

Hi Jan,

On 28/04/2022 08:45, Jan Beulich wrote:
> On 27.04.2022 19:10, Julien Grall wrote:
> > Hi,
> >
> > On 27/04/2022 17:38, osstest service owner wrote:
> > > flight 169781 xen-unstable-smoke real [real]
> > > flight 169785 xen-unstable-smoke real-retest [real]
> > > http://logs.test-lab.xenproject.org/osstest/logs/169781/
> > > http://logs.test-lab.xenproject.org/osstest/logs/169785/
> > >
> > > Regressions :-(
> > >
> > > Tests which did not succeed and are blocking,
> > > including tests which could not be run:
> > >    test-arm64-arm64-xl-xsm       8 xen-boot                 fail REGR. vs. 
> > > 169773
> > Well, I was overly optimistic :(. This now breaks in the ITS code:
> >
> > Apr 27 13:23:14.324831 (XEN) Xen call trace:
> > Apr 27 13:23:14.324855 (XEN)    [<000000000022a678>]
> > alloc_xenheap_pages+0x178/0x194 (PC)
> > Apr 27 13:23:14.336856 (XEN)    [<000000000022a670>]
> > alloc_xenheap_pages+0x170/0x194 (LR)
> > Apr 27 13:23:14.336886 (XEN)    [<0000000000237770>] _xmalloc+0x144/0x294
> > Apr 27 13:23:14.348773 (XEN)    [<00000000002378d4>] _xzalloc+0x14/0x30
> > Apr 27 13:23:14.348808 (XEN)    [<000000000027b4e4>]
> > gicv3_lpi_init_rdist+0x54/0x324
> > Apr 27 13:23:14.348835 (XEN)    [<0000000000279898>]
> > arch/arm/gic-v3.c#gicv3_cpu_init+0x128/0x46c
> > Apr 27 13:23:14.360799 (XEN)    [<0000000000279bfc>]
> > arch/arm/gic-v3.c#gicv3_secondary_cpu_init+0x20/0x50
> > Apr 27 13:23:14.372796 (XEN)    [<0000000000277054>]
> > gic_init_secondary_cpu+0x18/0x30
> > Apr 27 13:23:14.372829 (XEN)    [<0000000000284518>]
> > start_secondary+0x1a8/0x234
> > Apr 27 13:23:14.372856 (XEN)    [<0000010722aa4200>] 0000010722aa4200
> > Apr 27 13:23:14.384793 (XEN)
> > Apr 27 13:23:14.384823 (XEN)
> > Apr 27 13:23:14.384845 (XEN) ****************************************
> > Apr 27 13:23:14.384869 (XEN) Panic on CPU 2:
> > Apr 27 13:23:14.384891 (XEN) Assertion '!in_irq() &&
> > (local_irq_is_enabled() || num_online_cpus() <= 1)' failed at
> > common/page_alloc.c:2212
> > Apr 27 13:23:14.396805 (XEN) ****************************************
> >
> > The GICv3 LPI code contains a few calls to xmalloc() that will be done
> > while initializing the GIC CPU interface. I don't think we can delay the
> > initialization of the LPI part past local_irq_enable(). So I think we
> > will need to allocate the memory when preparing the CPU.
> Do you have an explanation why the next flight (169800) passed?
The flight 169800 ran on laxtonX (Softiron) which doesn't have a GICv3 ITS.

I thought OSSTest would try to run the next flight on the same HW to 
check heisenbug, but maybe this doesn't happen for the smoke test?
Cheers,

--
Julien Grall