Re: xen | Failed pipeline for staging | 6a47ba2f

[Stefano Stabellini <sstabellini@xxxxxxxxxx>]

On Fri, 28 Apr 2023, GitLab wrote:
> Pipeline #852233694 triggered by
> [568538936b4ac45a343cb3a4ab0c6cda?s=48&d=identicon]
> Ganis
> had 3 failed jobs
> Failed jobs
> ✖
> test
> qemu-smoke-dom0less-arm64-gcc

This is a real failure on staging. Unfortunately it is intermittent. It
usually happens once every 3-8 tests for me.

The test script is:
automation/scripts/qemu-smoke-dom0less-arm64.sh

and for this test it is invoked without arguments. It is starting 2
dom0less VMs in parallel, then dom0 does a xl network-attach and the
domU is supposed to setup eth0 and ping.

The failure is that nothing happens after "xl network-attach". The domU
never hotplugs any interfaces. I have logs that show that eth0 never
shows up and the only interface is lo no matter how long we wait.


On a hunch, I removed Alejandro patches. Without them, I ran 20 tests
without any failures. I have not investigated further but it looks like
one of these 4 commits is the problem:

2023-04-28 11:41 Alejandro Vallejo    tools: Make init-xenstore-domain use 
xc_domain_getinfolist()
2023-04-28 11:41 Alejandro Vallejo    tools: Refactor console/io.c to avoid 
using xc_domain_getinfo()
2023-04-28 11:41 Alejandro Vallejo    tools: Create xc_domain_getinfo_single()
2023-04-28 11:41 Alejandro Vallejo    tools: Make some callers of 
xc_domain_getinfo() use xc_domain_getinfol