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[Ruby] Segmentation Fault with puma #16013

nownabe opened this issue Jul 13, 2018 · 0 comments


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commented Jul 13, 2018

Hi 馃尀 I found segmentation fault maybe caused by grpc with puma.

What version of gRPC and what language are you using?


$ bundle exec gem list grpc

*** LOCAL GEMS ***

grpc (1.13.0 x86_64-linux)
grpc-tools (1.13.0)

What operating system (Linux, Windows, 鈥) and version?

$ uname -a
Linux mypc 4.15.0-23-generic #25-Ubuntu SMP Wed May 23 18:02:16 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux

What runtime / compiler are you using (e.g. python version or version of gcc)

 $ ruby -v
ruby 2.5.1p57 (2018-03-29 revision 63029) [x86_64-linux]

What did you do?

Reproducable code is here.

It's a simple rack app with gRPC.
When cluster mode Puma with preload_app! runs this app, requests are not finished and segmentation faults occur.

puma config

Originally, my Rails app tried to send request logs to Stackdriver Logging using google-cloud-logging gem but requests were stacked at Google::Cloud::Logging::Project#write_entries

What did you expect to see?

No segmentation fault.

What did you see instead?

Anything else we should know about your project / environment?

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