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Jonathan Perkin (jperkin@federate.me.uk)'s status on Wednesday, 04-Oct-2023 03:16:18 JST Jonathan Perkin

Today I learned Speculative Tracing in #DTrace to help narrow down a bug in #Unbound 1.18.0 on #illumos
https://github.com/NLnetLabs/unbound/issues/945#issuecomment-1744835397
Definitely adding that to my toolkit for next time. Was only after spending a number of hours code reading and writing manual probes to try and figure out where the EINVAL was bubbling up from.
Would be great if we had a repository somewhere of D scripts to cover a huge range of analysis areas, and help folks bootstrap themselves into writing their own.
In conversation about a year ago from federate.me.uk permalink
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  sendmsg() with ancillary data fails with EINVAL · Issue #945 · NLnetLabs/unbound
  
  Between 1.17.1 and 1.18.0, this patch was applied in util/netevent.c - comm_point_create_udp(): @@ -3809,7 +3860,11 @@ evbits = UB_EV_READ | UB_EV_PERSIST; /* ub_event stuff */ c->ev->ev = ub_event...
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