Re: make check crashes on POWER8 machine

Victor Wagner <vitus(at)wagner(dot)pp(dot)ru> writes:
> Justin Pryzby <pryzby(at)telsasoft(dot)com> wrote:
>> On Fri, Mar 13, 2020 at 10:29:13AM +0300, Victor Wagner wrote:
>>> I've encountered a problem with Postgres on PowerPC machine.

>> Is it related to
>> https://www.postgresql.org/message-id/20032.1570808731%40sss.pgh.pa.us
>> https://bugzilla.kernel.org/show_bug.cgi?id=205183

> I don't think so. At least I cannot see any signal handler-related stuff
> in the trace, but see lots of calls to stored procedure executor
> instead.

Read the whole thread. We fixed the issue with recursion in the
postmaster (9abb2bfc0); but the intermittent failure in infinite_recurse
is exactly the same as what we've been seeing for a long time in the
buildfarm, and there is zero doubt that it's that kernel bug.

In the other thread I'd suggested that we could quit running
errors.sql in parallel with other tests, but that would slow down
parallel regression testing for everybody. I'm disinclined to do
that now, since the buildfarm problem is intermittent and easily
recognized.

regards, tom lane