11 Jan
2024
11 Jan
'24
2:17 a.m.
Issue #20172 has been updated by mame (Yusuke Endoh).
I investigated the issue by using the VM access Michael gave me. (Thank you!) And I
understand the issue.
It looks like `sched_getcpu(3)` returns an unexpected number in the environment. Since the
number of CPUs in the VM is 2, I expect it to return 0 or 1. However, it actually returns
0 or *123*. This makes `pthread_create` fail with EINVAL because of a wrong affinity
configuration.
TBH, I don't know why `sched_getcpu(3)` returns a strange value, but I guess it may
depend on the configuration of the virtual environment.
I decided to remove the setaffinity mechanism and confirmed that it solves the issue:
https://github.com/ruby/ruby/pull/9479
I introduced the mechanism to reduce the overhead of thread context switch, but a quick
benchmark showed that removing it didn't seem to degrade the performance. So I'd
like to simply delete the troublesome code.
----------------------------------------
Bug #20172: Socket.addrinfo failing randomly
https://bugs.ruby-lang.org/issues/20172#change-106174
* Author: mwaldvogel (Michael Waldvogel)
* Status: Open
* Priority: Normal
* ruby -v: ruby 3.3.0 (2023-12-25 revision 5124f9ac75) [x86_64-linux]
* Backport: 3.0: UNKNOWN, 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN
----------------------------------------
I've recently updated one of my linux systems (Gentoo) to glibc 2.38 (that was the
only change). After the update most of the time the below error happens. Among other
things this breaks rubygems for me. I've reinstalled ruby 3.2.2 with rvm and
didn't encounter the issue. The issue however remained even after reinstalling ruby
3.3.0 and even with ruby master. Since this goes back to getaddrinfo (which is working
without any issues outside of ruby) and there seems to be only one bigger change to stdlib
socket, I'm assuming the problem was introduced with
https://bugs.ruby-lang.org/issues/19965
```
3.3.0 :001 > require 'socket'
=> true
3.3.0 :002 > Socket.getaddrinfo('rubygems.org', 443)
(irb):2:in `getaddrinfo': getaddrinfo: Temporary failure in name resolution
(Socket::ResolutionError)
from (irb):2:in `<main>'
from <internal:kernel>:187:in `loop'
from
/usr/local/rvm/rubies/ruby-3.3.0/lib/ruby/gems/3.3.0/gems/irb-1.11.0/exe/irb:9:in `<top
(required)>'
from /usr/local/rvm/rubies/ruby-3.3.0/bin/irb:25:in `load'
from /usr/local/rvm/rubies/ruby-3.3.0/bin/irb:25:in `<main>'
3.3.0 :003 > Socket.getaddrinfo('rubygems.org', 443)
(irb):3:in `getaddrinfo': getaddrinfo: Temporary failure in name resolution
(Socket::ResolutionError)
from (irb):3:in `<main>'
from <internal:kernel>:187:in `loop'
from
/usr/local/rvm/rubies/ruby-3.3.0/lib/ruby/gems/3.3.0/gems/irb-1.11.0/exe/irb:9:in `<top
(required)>'
from /usr/local/rvm/rubies/ruby-3.3.0/bin/irb:25:in `load'
from /usr/local/rvm/rubies/ruby-3.3.0/bin/irb:25:in `<main>'
3.3.0 :004 > Socket.getaddrinfo('rubygems.org', 443)
=>
[["AF_INET", 443, "151.101.193.227", "151.101.193.227", 2,
1, 6],
["AF_INET", 443, "151.101.193.227", "151.101.193.227", 2,
2, 17],
["AF_INET", 443, "151.101.193.227", "151.101.193.227", 2,
3, 0],
...
["AF_INET6", 443, "2a04:4e42::483", "2a04:4e42::483", 10,
1, 6],
["AF_INET6", 443, "2a04:4e42::483", "2a04:4e42::483", 10,
2, 17],
["AF_INET6", 443, "2a04:4e42::483", "2a04:4e42::483", 10,
3, 0]]
3.3.0 :005 >
```
--
https://bugs.ruby-lang.org/