#7881 Q: L1 kernel version of f30-test.fedorainfracloud.org VM
Closed: Fixed 4 years ago by kevin. Opened 4 years ago by yamato.

I would like to know the version of (L1) Linux kernel where
f30-test.fedorainfracloud.org VM runs.

I'm tracking a bug of strace (or kernel?) exposed on
f30-test.fedorainfracloud.org.
(https://lists.strace.io/pipermail/strace-devel/2019-May/008769.html)
If I can know the version of L1 kernel, I can try to reproduce the bug on my local
machine.

A few years ago, I added a feature tracing kvm related ioctl to strace
to study how kvm works. I also submitted a test case for the feature based
on an article about KVM(https://lwn.net/Articles/658511/).

The test case makes a small VM and runs it under strace. The test
compares the output of strace with expected output. According to a
report from @ldv, the maintainer of strace, the test case was successfully
passed on f29-test.fedorainfracloud.org and
rawhide-test.fedorainfracloud.org. However, it fails on
f30-test.fedorainfracloud.org.

In the failed case, KVM_RUN returned with KVM_EXIT_FAIL_ENTRY
unexpectedly. I inspected it, and it seems that KVM_RUN fails at vmlauch
instruction. I assumed f30-test.fedorainfracloud.org runs on a VM. Therefore the
vmlaunch instruction may be handled in L1 kernel. From the output of uname
command, we can know the version of L2 kernel. However, I have no idea how to
know the version of L1 kernel. So I'm asking the question here.


This is indeed a vm running on RHOS 5. The host compute node is rhel7 with:

Linux fed-cloud05.cloud.fedoraproject.org 3.10.0-693.11.6.el7.x86_64 #1 SMP Thu Dec 28 14:23:39 EST 2017 x86_64 x86_64 x86_64 GNU/Linux

Let us know if you need anymore info.

Metadata Update from @kevin:
- Issue close_status updated to: Fixed
- Issue status updated to: Closed (was: Open)

4 years ago

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