Bug 1534616

Summary: libguestfs-test-tool fails on my Ubuntu 16.04.3 LTS
Product: [Community] Virtualization Tools Reporter: mathieu.tarral
Component: superminAssignee: Richard W.M. Jones <rjones>
Status: CLOSED DUPLICATE QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: low Docs Contact:
Priority: unspecified    
Version: unspecifiedCC: ptoscano, rbalakri, rjones
Target Milestone: ---   
Target Release: ---   
Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2018-01-15 15:50:04 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Attachments:
Description Flags
libguestfs-test-tool output none

Description mathieu.tarral 2018-01-15 15:24:53 UTC
Created attachment 1381553 [details]
libguestfs-test-tool output

Description of problem:
The libguestfs-test-tool is failing on my Ubuntu.
I tried to reproduce the problem in a VM, but i couldn't.

Can you explain me why the kernel is crashing ?
I don't understand what's happening, and i can't figure it out with the debug provided by the tool.

Version-Release number of selected component (if applicable):
libguestfs0: 1:1.32.2-4ubuntu2

How reproducible:
not reproducible.

Actual results:
Log output attached.


Expected results:
libguestfs-test-tool succeed.


Thanks a lot.

Comment 1 mathieu.tarral 2018-01-15 15:31:48 UTC
Also, i booting on Ubuntu's standard kernel:

$ uname -a
Linux tarrma-Latitude-E7440 4.13.0-26-generic #29~16.04.2-Ubuntu SMP Tue Jan 9 22:00:44 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux

And i don't understand why there is another kernel info (kvmi) on which i'm also worked that appears in the logs:

Booting from ROM...
\x1b[2J[    0.000000] Linux version 4.15.0-kvmi+ (tarrma@tarrma-Latitude-E7440) (gcc version 5.4.0 20160609 (Ubuntu 5.4.0-6ubuntu1~16.04.5)) #2 SMP Thu Jan 4 18:26:54 EET 2018

Here you can see that QEMU is using "Linux version 4.15.0-kvmi+" to boot i guess ?
but it doesn't match my current kernel.

Could this be the cause of the kernel panic ?

Thanks.

Comment 2 Richard W.M. Jones 2018-01-15 15:48:41 UTC
You're hitting this bug in supermin:

https://github.com/libguestfs/supermin/commit/158854e3ba4be7f6b8d81f662ddad98358ede1de

The solution is to upgrade supermin, backport just that patch,
or use an older host kernel.

Comment 3 Richard W.M. Jones 2018-01-15 15:50:04 UTC

*** This bug has been marked as a duplicate of bug 1470157 ***