armhfp builder instability

Lately, I've seen quite a few spurious build failures. Random SIGBUS is
particularly common, and gcc reports that it cannot reproduce the SIGBUS
in a second compilation, which usually points to a kernel/hardware issue.

The latest problem was a hang during a build (on, with this kernel:

4.16.6-302.fc28.armv7hl+lpae #1 SMP Tue May 1 23:15:35 UTC 2018 armv7l
armv7l armv7l GNU/Linux

This affects multiple builders, so I suspect a kernel issue, not dying
hardware because AFAIK, the machines are independent.

The issue also affects copying out the log files for Koji, so they
probably do not show the actual place of the hang.



Re: armhfp builder instability

By Peter Robinson at 05/15/2018 - 07:06

On Tue, May 15, 2018 at 12:02 PM, Florian Weimer < ... at redhat dot com> wrote:
There's a stability issue post upgrade, the upgrades moved the
underlying hypervisors to RHEL 7.5 and the build VMs to Fedora 28 at
the same time, the issue is known and is being investigated/worked


Re: armhfp builder instability

By =?UTF-8?Q?Fabia... at 05/15/2018 - 07:34

On Tue, May 15, 2018 at 1:06 PM, Peter Robinson < ... at gmail dot com> wrote:
As I'm facing what seems to be the very same issue
(<a href="" title=""></a>), I'd
like to ask whether there's a ticket/bug/issue opened for this that I
could follow and get some notification when it's solved.

Best Regards,

Re: armhfp builder instability

By Florian Weimer at 05/15/2018 - 12:04

On 05/15/2018 01:34 PM, Fabiano FidĂȘncio wrote:
It turns out there already was a kernel bug, which I just made public:

<a href="" title=""></a>