Re: arm64/for-kernelci baseline: 14 runs, 4 regressions (v6.12-rc3-67-gb9e20acb61ba)

[Catalin Marinas <catalin.marinas@arm.com>]

On Thu, Oct 17, 2024 at 12:50:42PM +0100, Peter Maydell wrote:
> On Thu, 17 Oct 2024 at 12:34, Catalin Marinas <catalin.marinas@arm.com> wrote:
> > On Wed, Oct 16, 2024 at 11:59:02AM -0700, kernelci.org bot wrote:
> > > Test Regressions
> > > ----------------
> > >
> > >
> > > platform                   | arch  | lab         | compiler | defconfig | regressions
> > > ---------------------------+-------+-------------+----------+-----------+------------
> > > qemu_arm64-virt-gicv2      | arm64 | lab-broonie | gcc-12   | defconfig | 1
> > >
> > >   Details:     https://kernelci.org/test/plan/id/671002a4ff09627193c86863
> >
> > This page is still 404 (it happens quite a lot even with the logs in
> > these reports, not really helpful).
> >
> > >
> > >   Results:     0 PASS, 1 FAIL, 0 SKIP
> > >   Full config: defconfig
> > >   Compiler:    gcc-12 (aarch64-linux-gnu-gcc (Debian 12.2.0-14) 12.2.0)
> > >   Plain log:   https://storage.kernelci.org//arm64/for-kernelci/v6.12-rc3-67-gb9e20acb61ba/arm64/defconfig/gcc-12/lab-broonie/baseline-qemu_arm64-virt-gicv2.txt
> > >   HTML log:    https://storage.kernelci.org//arm64/for-kernelci/v6.12-rc3-67-gb9e20acb61ba/arm64/defconfig/gcc-12/lab-broonie/baseline-qemu_arm64-virt-gicv2.html
> > >   Rootfs:      http://storage.kernelci.org/images/rootfs/buildroot/buildroot-baseline/20230703.0/arm64/rootfs.cpio.gz
> >
> > At least the boot log is shown (for this email, others point to missing
> > pages). However, it looks more like a Qemu bug, something about SME it
> > doesn't like:
> >
> > ERROR:target/arm/internals.h:923:regime_is_user: code should not be reached
> > Bail out! ERROR:target/arm/internals.h:923:regime_is_user: code should not be reached
> >
> > I tried Qemu 7.2.0 and 8.2.4, both from Debian (stable and unstable).
> > Adding Peter, maybe he has any idea.
> 
> Yeah, we shouldn't be hitting asserts (to state the obvious).
> 
> If you can provide the QEMU command line and the kernel/etc
> files needed to run it, I can have a look.

The kernel defconfig should be sufficient to trigger it. It must be the
for-kernelci branch from here:

https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git/

My qemu command line is:

qemu-system-aarch64 \
	-machine virt,gic_version=3,mte=on \
	-cpu max \
	-smp 2 -m 2G \
	-kernel </path/to/Image> \
	-semihosting -nographic \
	-serial mon:stdio \
	-monitor tcp:0.0.0.0:4000,server,nowait \
	-netdev user,id=net0,hostfwd=tcp:0.0.0.0:4022-:22 \
	-device virtio-net-device,netdev=net0 \
	-object rng-random,filename=/dev/urandom,id=rng0 \
	-device virtio-rng-pci,rng=rng0 \
	-append 'console=ttyAMA0 earlycon=pl011,0x9000000 loglevel=9 ip=dhcp root=/dev/nfs rw nfsroot=<ip-addr>:/srv/nfs/debian-arm64,tcp,v4 kasan.mode=sync'

You don't need a filesystem, it fails before reaching that point. I
guess all it matters is '-cpu max'.

Thanks.

-- 
Catalin