From: "dazuma (Daniel Azuma) via ruby-dev" <ruby-dev@ml.ruby-lang.org>
To: ruby-dev@ml.ruby-lang.org
Cc: "dazuma (Daniel Azuma)" <noreply@ruby-lang.org>
Subject: [ruby-dev:52061] [Ruby master Bug#18024] Ractor crashes when connections are closed in multiple Ractors
Date: Mon, 13 Nov 2023 22:41:32 +0000 (UTC) [thread overview]
Message-ID: <redmine.journal-105315.20231113224132.1855@ruby-lang.org> (raw)
In-Reply-To: <redmine.issue-18024.20210706143447.1855@ruby-lang.org>
Issue #18024 has been updated by dazuma (Daniel Azuma).
Also not able to reproduce on `ruby 3.2.2 (2023-03-30 revision e51014f9c0) [x86_64-darwin22]` or `ruby 3.3.0dev (2023-11-13T21:00:10Z master e8ab3f7010) [x86_64-darwin23]`. I wonder if this was an environment issue in the original report.
----------------------------------------
Bug #18024: Ractor crashes when connections are closed in multiple Ractors
https://bugs.ruby-lang.org/issues/18024#change-105315
* Author: tagomoris (Satoshi Tagomori)
* Status: Assigned
* Priority: Normal
* Assignee: ko1 (Koichi Sasada)
* ruby -v: ruby 3.0.0p0 (2020-12-25 revision 95aff21468) [arm64-darwin20]
* Backport: 2.6: UNKNOWN, 2.7: UNKNOWN, 3.0: UNKNOWN
----------------------------------------
When multiple Ractors will accept and close connections, that script caused the crash shown below.
This pattern is taken when we want to distribute the overhead of `accept` to multiple CPU cores.
Script:
```
require 'socket'
try_times = 10
worker_num = 2
listener = TCPServer.new("127.0.0.1", 8228)
listener.listen(100)
workers = worker_num.times.map do |i|
Ractor.new(i, listener.dup) do |index, sock|
while conn = sock.accept
begin
data = conn.read
p "Worker|#{index} Data: #{data}"
conn.close
rescue => e
p "Worker|#{index} #{e.full_message}"
end
end
rescue => e
$stderr.puts "Error, worker#{index}: #{e.full_message}"
end
end
p "Starting a sender"
sender = Ractor.new(try_times) do |tries|
tries.times.each do
s = TCPSocket.new("127.0.0.1", 8228)
s.write("yay")
ensure
s.close rescue nil
end
end
sender.take
workers.each{|w| w.take}
p "End"
```
Crash report:
```
<internal:ractor>:267: warning: Ractor is experimental, and the behavior may change in future versions of Ruby! Also there are many implementation issues.
"Starting a sender"
"Worker|1 Data: yay"
snippets/ractor_accept.rb:30: [BUG] Bus Error at 0x00000014000001f5
ruby 3.0.0p0 (2020-12-25 revision 95aff21468) [arm64-darwin20]
-- Crash Report log information --------------------------------------------
See Crash Report log file under the one of following:
* ~/Library/Logs/DiagnosticReports
* /Library/Logs/DiagnosticReports
for more details.
Don't forget to include the above Crash Report log file in bug reports.
-- Control frame information -----------------------------------------------
c:0006 p:---- s:0023 e:000022 CFUNC :close
c:0005 p:0028 s:0019 e:000017 BLOCK snippets/ractor_accept.rb:30 [FINISH]
c:0004 p:---- s:0014 e:000013 CFUNC :times
c:0003 p:---- s:0011 e:000010 CFUNC :each
c:0002 p:0008 s:0007 e:000006 BLOCK snippets/ractor_accept.rb:26 [FINISH]
c:0001 p:---- s:0003 e:000002 (none) [FINISH]
-- Ruby level backtrace information ----------------------------------------
snippets/ractor_accept.rb:26:in `block in <main>'
snippets/ractor_accept.rb:26:in `each'
snippets/ractor_accept.rb:26:in `times'
snippets/ractor_accept.rb:30:in `block (2 levels) in <main>'
snippets/ractor_accept.rb:30:in `close'
-- Other runtime information -----------------------------------------------
* Loaded script: snippets/ractor_accept.rb
* Loaded features:
0 enumerator.so
1 thread.rb
2 rational.so
3 complex.so
4 ruby2_keywords.rb
5 /Users/tagomoris/.rbenv/versions/3.0.0/lib/ruby/3.0.0/arm64-darwin20/enc/encdb.bundle
6 /Users/tagomoris/.rbenv/versions/3.0.0/lib/ruby/3.0.0/arm64-darwin20/enc/trans/transdb.bundle
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[IMPORTANT]
Don't forget to include the Crash Report log file under
DiagnosticReports directory in bug reports.
Abort trap: 6
```
---Files--------------------------------
ruby_2021-07-06-231613_Moris-Macbook-Air.crash (35.9 KB)
ruby_2021-08-24-203317_Moris-Macbook-Air.crash (17.4 KB)
--
https://bugs.ruby-lang.org/
next prev parent reply other threads:[~2023-11-13 22:41 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-06 14:34 [ruby-dev:51080] " tagomoris
2021-08-24 11:43 ` [ruby-dev:51100] " tagomoris (Satoshi TAGOMORI)
2021-08-31 13:54 ` [ruby-dev:51101] " tagomoris (Satoshi TAGOMORI)
2021-11-30 5:37 ` [ruby-dev:51115] " hsbt (Hiroshi SHIBATA)
2021-12-14 16:41 ` [ruby-dev:51126] " ko1 (Koichi Sasada)
2022-12-27 12:15 ` [ruby-dev:52032] " niku (niku _) via ruby-dev
2023-11-13 22:41 ` dazuma (Daniel Azuma) via ruby-dev [this message]
2023-11-14 1:34 ` [ruby-dev:52062] " tagomoris (Satoshi Tagomori) via ruby-dev
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