From: "kjtsanaktsidis (KJ Tsanaktsidis) via ruby-core" <ruby-core@ml.ruby-lang.org>
To: ruby-core@ml.ruby-lang.org
Cc: "kjtsanaktsidis (KJ Tsanaktsidis)" <noreply@ruby-lang.org>
Subject: [ruby-core:116356] [Ruby master Bug#20198] Threaded DNS resolver does not propagate errno to the calling thread
Date: Mon, 22 Jan 2024 01:05:39 +0000 (UTC) [thread overview]
Message-ID: <redmine.issue-20198.20240122010539.10173@ruby-lang.org> (raw)
In-Reply-To: redmine.issue-20198.20240122010539.10173@ruby-lang.org
Issue #20198 has been reported by kjtsanaktsidis (KJ Tsanaktsidis).
----------------------------------------
Bug #20198: Threaded DNS resolver does not propagate errno to the calling thread
https://bugs.ruby-lang.org/issues/20198
* Author: kjtsanaktsidis (KJ Tsanaktsidis)
* Status: Open
* Priority: Normal
* Assignee: kjtsanaktsidis (KJ Tsanaktsidis)
* Backport: 3.0: UNKNOWN, 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN
----------------------------------------
If we get a return value of `EAI_SYSTEM` from `getaddrinfo`, we transform that into an appropriate `Errno::` exception on the Ruby side. However, because we now run the actual call to `getaddrinfo` in a thread, we lose that `errno` value (because `errno` is thread-local). So, what we actually raise in case of `EAI_SYSTEM` is just the last error which happened on the calling thread - e.g. this `ECHILD` which presumably got set in the bowels of pthreads somewhere:
```
1)
Socket::IPSocket#getaddress raises an error on unknown hostnames ERROR
Expected SocketError
but got: Errno::ECHILD (No child processes - getaddrinfo)
/home/runner/work/ruby/ruby/src/spec/ruby/library/socket/ipsocket/getaddress_spec.rb:22:in `getaddress'
/home/runner/work/ruby/ruby/src/spec/ruby/library/socket/ipsocket/getaddress_spec.rb:22:in `block (3 levels) in <top (required)>'
/home/runner/work/ruby/ruby/src/spec/ruby/library/socket/ipsocket/getaddress_spec.rb:21:in `block (2 levels) in <top (required)>'
/home/runner/work/ruby/ruby/src/spec/ruby/library/socket/ipsocket/getaddress_spec.rb:4:in `<top (required)>'
```
--
https://bugs.ruby-lang.org/
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next parent reply other threads:[~2024-01-22 1:05 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-01-22 1:05 kjtsanaktsidis (KJ Tsanaktsidis) via ruby-core [this message]
2024-01-22 1:08 ` [ruby-core:116357] [Ruby master Bug#20198] Threaded DNS resolver does not propagate errno to the calling thread kjtsanaktsidis (KJ Tsanaktsidis) via ruby-core
2024-01-22 3:38 ` [ruby-core:116359] " kjtsanaktsidis (KJ Tsanaktsidis) via ruby-core
2024-03-14 13:02 ` [ruby-core:117165] " naruse (Yui NARUSE) via ruby-core
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