[Test Failure] Sometimes failing valgrind test

[madolson]

We sometimes get a valgrind failure with no error, just printing out valgrind text:

Example: https://github.com/valkey-io/valkey/actions/runs/12474649298/job/34816982513

!!! WARNING The following tests failed:

*** [err]: Valgrind error: ==90396== Memcheck, a memory error detector
==90396== Copyright (C) 2002-2022, and GNU GPL'd, by Julian Seward et al.
==90396== Using Valgrind-3.22.0 and LibVEX; rerun with -h for copyright info
==90396== Command: src/valkey-server ./tests/tmp/valkey.conf.3985.1683
==90396== 

There might be more of an error that is getting truncated. Not sure what is causing it.

[madolson]

Looking into this quickly, I'm guessing the report isn't fully written out yet, because it's missing some elements like "definitely lost" and such.

[madolson]

Looking more deeply, these seem to be that this is because the process is failing to exit. We can see that the we force the process to crash, and it's not exiting.

See https://github.com/valkey-io/valkey/actions/runs/12474649298/job/34816982513#step:6:5057.

Tue, 24 Dec 2024 01:55:09 GMT
[ok]: Test dual-channel-replication primary gets cob overrun during replica rdb load (15579 ms)
Tue, 24 Dec 2024 01:55:10 GMT
Waiting for process 90396 to exit...

... blah blah ...

Tue, 24 Dec 2024 01:59:33 GMT
Forcing process 90396 to exit...
Tue, 24 Dec 2024 01:59:33 GMT
[err]: Valgrind error: ==90396== Memcheck, a memory error detector