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Bug #17196

Segmentation Fault with Socket#close in Ractors

Added by asuper (Anthony Super) 29 days ago. Updated 11 days ago.

Status:
Open
Priority:
Normal
Target version:
-
ruby -v:
ruby 3.0.0preview1 (2020-09-25 master 0096d2b895) [x86_64-linux]
[ruby-core:100181]

Description

While messing around with 3.0.0-preview1, I thought it would be fun to write a really, really simple webserver that used Ractor creation instead of forking or spawning threads. I was right, it was fun! Unfortunately it also caused a segfault. The segfault appears to be on socket closure when a lot of ractors are running at once.

The attached tarball includes the code you need to make it happen. Run bin/server in one terminal/screen session/tmux window/whatever, and ./bug_bench.sh with the other. You'll need to have the apache benchmark utility installed.


Files

reproduce-my-segfault.tar.gz (10 KB) reproduce-my-segfault.tar.gz Tarball that includes reproduction steps + error dump asuper (Anthony Super), 09/26/2020 09:18 PM
error_log.txt (38.6 KB) error_log.txt Just the error dump, in case that's more interesting asuper (Anthony Super), 09/26/2020 09:18 PM

Updated by ko1 (Koichi Sasada) 11 days ago

  • Assignee set to ko1 (Koichi Sasada)

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