OOM killer invoked at broker

There have been outages the last two nights at the snowflake broker, I was puzzled at first because there's no errors in the broker logs. I just checked the syslog and it looks like the OOM killer has been invoked:

Sep 30 09:36:17 snowflake-broker kernel: [17516237.845995] probetest invoked oom-killer: gfp_mask=0x100cca(GFP_HIGHUSER_MOVABLE), order=0, oom_score_adj=0

This one is for the probetest, but it's likely the broker outages was due to this as well.