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Bug #16357

`Segmentation fault (core dumped)` or `[BUG] object allocation during garbage collection phase`

Added by graywolf (Gray Wolf) 22 days ago.

Status:
Open
Priority:
Normal
Assignee:
-
Target version:
-
ruby -v:
ruby 2.4.9p362 (2019-10-02 revision 67824) [x86_64-linux], ruby 2.5.7p206 (2019-10-01 revision 67816) [x86_64-linux]
[ruby-core:95897]

Description

How to reproduce:

+$ tree .
.
├── config.ru
├── Gemfile
└── Gemfile.lock

0 directories, 3 files
+$ cat config.ru
require 'json'
require 'rack'

run ->(env) do
  begin
    req = Rack::Request.new(env)
    JSON.load(req.body)
  rescue SystemStackError
  end
  [200, {}, []]
end
+$ cat Gemfile
source 'https://rubygems.org'

gem 'puma'
gem 'rack'
+$ cat Gemfile.lock
GEM
  remote: https://rubygems.org/
  specs:
    nio4r (2.5.2)
    puma (4.3.0)
      nio4r (~> 2.0)
    rack (2.0.7)

PLATFORMS
  ruby

DEPENDENCIES
  puma
  rack

BUNDLED WITH
   2.0.2

and run

while :; do curl -iXPOST localhost:9292 -d "$(ruby -e 'puts(?[*10000 + ?]*10000)')"; done

against it.

It fails for 2.4:

+:( $ RBENV_VERSION=2.4.9 bundle exec puma
Puma starting in single mode...
* Version 4.3.0 (ruby 2.4.9-p362), codename: Mysterious Traveller
* Min threads: 0, max threads: 16
* Environment: development
* Listening on tcp://0.0.0.0:9292
Use Ctrl-C to stop
Segmentation fault (core dumped)

and 2.5:

+:( $ RBENV_VERSION=2.5.7 bundle exec puma
Puma starting in single mode...
* Version 4.3.0 (ruby 2.5.7-p206), codename: Mysterious Traveller
* Min threads: 0, max threads: 16
* Environment: development
* Listening on tcp://0.0.0.0:9292
Use Ctrl-C to stop
/tmp/repro/.bundle/vendor/ruby/2.5.0/gems/puma-4.3.0/lib/puma/events.rb:120: [BUG] object allocation during garbage collection phase
ruby 2.5.7p206 (2019-10-01 revision 67816) [x86_64-linux]

-- Control frame information -----------------------------------------------
c:0008 p:---- s:0080 e:000079 CFUNC  :now
c:0007 p:0077 s:0076 e:000075 METHOD /tmp/repro/.bundle/vendor/ruby/2.5.0/gems/puma-4.3.0/lib/puma/events.rb:120
c:0006 p:0086 s:0067 e:000066 RESCUE /tmp/repro/.bundle/vendor/ruby/2.5.0/gems/puma-4.3.0/lib/puma/server.rb:689
c:0005 p:0433 s:0063 e:000062 METHOD /tmp/repro/.bundle/vendor/ruby/2.5.0/gems/puma-4.3.0/lib/puma/server.rb:666
c:0004 p:0026 s:0038 e:000037 METHOD /tmp/repro/.bundle/vendor/ruby/2.5.0/gems/puma-4.3.0/lib/puma/server.rb:470
c:0003 p:0065 s:0026 e:000025 BLOCK  /tmp/repro/.bundle/vendor/ruby/2.5.0/gems/puma-4.3.0/lib/puma/server.rb:328 [FINISH]
c:0002 p:0107 s:0016 e:000015 BLOCK  /tmp/repro/.bundle/vendor/ruby/2.5.0/gems/puma-4.3.0/lib/puma/thread_pool.rb:134 [FINISH]
c:0001 p:---- s:0003 e:000002 (none) [FINISH]

-- Ruby level backtrace information ----------------------------------------
/tmp/repro/.bundle/vendor/ruby/2.5.0/gems/puma-4.3.0/lib/puma/thread_pool.rb:134:in `block in spawn_thread'
/tmp/repro/.bundle/vendor/ruby/2.5.0/gems/puma-4.3.0/lib/puma/server.rb:328:in `block in run'
/tmp/repro/.bundle/vendor/ruby/2.5.0/gems/puma-4.3.0/lib/puma/server.rb:470:in `process_client'
/tmp/repro/.bundle/vendor/ruby/2.5.0/gems/puma-4.3.0/lib/puma/server.rb:666:in `handle_request'
/tmp/repro/.bundle/vendor/ruby/2.5.0/gems/puma-4.3.0/lib/puma/server.rb:689:in `rescue in handle_request'
/tmp/repro/.bundle/vendor/ruby/2.5.0/gems/puma-4.3.0/lib/puma/events.rb:120:in `unknown_error'
/tmp/repro/.bundle/vendor/ruby/2.5.0/gems/puma-4.3.0/lib/puma/events.rb:120:in `now'

-- C level backtrace information -------------------------------------------
/home/wolf/.rbenv/versions/2.5.7/lib/libruby.so.2.5(rb_vm_bugreport+0xcc7) [0x7ffff7ed13d7]
/home/wolf/.rbenv/versions/2.5.7/lib/libruby.so.2.5(rb_bug+0xd8) [0x7ffff7d4d3a8]
/home/wolf/.rbenv/versions/2.5.7/lib/libruby.so.2.5(0xcd544) [0x7ffff7d6e544]
/home/wolf/.rbenv/versions/2.5.7/lib/libruby.so.2.5(rb_data_typed_object_zalloc+0x11) [0x7ffff7d700c1]
/home/wolf/.rbenv/versions/2.5.7/lib/libruby.so.2.5(0x1e6f15) [0x7ffff7e87f15]
/home/wolf/.rbenv/versions/2.5.7/lib/libruby.so.2.5(0x11dacb) [0x7ffff7dbeacb]
/home/wolf/.rbenv/versions/2.5.7/lib/libruby.so.2.5(rb_class_new_instance+0x2a) [0x7ffff7dbef6a]
/home/wolf/.rbenv/versions/2.5.7/lib/libruby.so.2.5(0x20d266) [0x7ffff7eae266]
/home/wolf/.rbenv/versions/2.5.7/lib/libruby.so.2.5(0x2262bb) [0x7ffff7ec72bb]
/home/wolf/.rbenv/versions/2.5.7/lib/libruby.so.2.5(0x21a56f) [0x7ffff7ebb56f]
/home/wolf/.rbenv/versions/2.5.7/lib/libruby.so.2.5(0x21e8a4) [0x7ffff7ebf8a4]
/home/wolf/.rbenv/versions/2.5.7/lib/libruby.so.2.5(0x2243f5) [0x7ffff7ec53f5]
/home/wolf/.rbenv/versions/2.5.7/lib/libruby.so.2.5(0x224ac5) [0x7ffff7ec5ac5]
/home/wolf/.rbenv/versions/2.5.7/lib/libruby.so.2.5(0x21a56f) [0x7ffff7ebb56f]
/home/wolf/.rbenv/versions/2.5.7/lib/libruby.so.2.5(0x21e8a4) [0x7ffff7ebf8a4]
/home/wolf/.rbenv/versions/2.5.7/lib/libruby.so.2.5(0x2243f5) [0x7ffff7ec53f5]
/home/wolf/.rbenv/versions/2.5.7/lib/libruby.so.2.5(0x22462e) [0x7ffff7ec562e]
/home/wolf/.rbenv/versions/2.5.7/lib/libruby.so.2.5(0x1e015e) [0x7ffff7e8115e]
/home/wolf/.rbenv/versions/2.5.7/lib/libruby.so.2.5(0x1e0799) [0x7ffff7e81799]
/usr/lib/libpthread.so.0(start_thread+0xdf) [0x7ffff7c5c4cf]
/usr/lib/libc.so.6(clone+0x43) [0x7ffff79702d3]

-- Other runtime information -----------------------------------------------

* Loaded script: /tmp/repro/.bundle/vendor/ruby/2.5.0/bin/puma

* Loaded features:

    0 enumerator.so
    1 thread.rb
    2 rational.so
    3 complex.so
    4 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/enc/encdb.so
    5 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/enc/trans/transdb.so
    6 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/rbconfig.rb
    7 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/compatibility.rb
    8 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/defaults.rb
    9 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/deprecate.rb
   10 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/errors.rb
   11 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/path_support.rb
   12 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/version.rb
   13 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/requirement.rb
   14 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/platform.rb
   15 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/basic_specification.rb
   16 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/stub_specification.rb
   17 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/delegate.rb
   18 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/uri/rfc2396_parser.rb
   19 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/uri/rfc3986_parser.rb
   20 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/uri/common.rb
   21 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/uri/generic.rb
   22 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/uri/ftp.rb
   23 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/uri/http.rb
   24 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/uri/https.rb
   25 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/uri/ldap.rb
   26 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/uri/ldaps.rb
   27 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/uri/mailto.rb
   28 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/uri.rb
   29 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/specification_policy.rb
   30 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/util/list.rb
   31 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/stringio.so
   32 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/specification.rb
   33 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/exceptions.rb
   34 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/util.rb
   35 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/bundler_version_finder.rb
   36 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/dependency.rb
   37 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/core_ext/kernel_gem.rb
   38 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/monitor.rb
   39 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/core_ext/kernel_require.rb
   40 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/core_ext/kernel_warn.rb
   41 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems.rb
   42 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/gems/2.5.0/gems/did_you_mean-1.3.1/lib/did_you_mean/version.rb
   43 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/gems/2.5.0/gems/did_you_mean-1.3.1/lib/did_you_mean/core_ext/name_error.rb
   44 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/gems/2.5.0/gems/did_you_mean-1.3.1/lib/did_you_mean/levenshtein.rb
   45 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/gems/2.5.0/gems/did_you_mean-1.3.1/lib/did_you_mean/jaro_winkler.rb
   46 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/gems/2.5.0/gems/did_you_mean-1.3.1/lib/did_you_mean/spell_checker.rb
   47 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/gems/2.5.0/gems/did_you_mean-1.3.1/lib/did_you_mean/spell_checkers/name_error_checkers/class_name_checker.rb
   48 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/gems/2.5.0/gems/did_you_mean-1.3.1/lib/did_you_mean/spell_checkers/name_error_checkers/variable_name_checker.rb
   49 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/gems/2.5.0/gems/did_you_mean-1.3.1/lib/did_you_mean/spell_checkers/name_error_checkers.rb
   50 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/gems/2.5.0/gems/did_you_mean-1.3.1/lib/did_you_mean/spell_checkers/method_name_checker.rb
   51 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/gems/2.5.0/gems/did_you_mean-1.3.1/lib/did_you_mean/spell_checkers/key_error_checker.rb
   52 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/gems/2.5.0/gems/did_you_mean-1.3.1/lib/did_you_mean/spell_checkers/null_checker.rb
   53 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/gems/2.5.0/gems/did_you_mean-1.3.1/lib/did_you_mean/formatters/plain_formatter.rb
   54 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/gems/2.5.0/gems/did_you_mean-1.3.1/lib/did_you_mean.rb
   55 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/tsort.rb
   56 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/request_set/gem_dependency_api.rb
   57 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/request_set/lockfile/parser.rb
   58 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/request_set/lockfile/tokenizer.rb
   59 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/request_set/lockfile.rb
   60 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/request_set.rb
   61 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/resolver/molinillo/lib/molinillo/gem_metadata.rb
   62 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/resolver/molinillo/lib/molinillo/errors.rb
   63 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/set.rb
   64 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/resolver/molinillo/lib/molinillo/dependency_graph/action.rb
   65 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/resolver/molinillo/lib/molinillo/dependency_graph/add_edge_no_circular.rb
   66 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/resolver/molinillo/lib/molinillo/dependency_graph/add_vertex.rb
   67 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/resolver/molinillo/lib/molinillo/dependency_graph/delete_edge.rb
   68 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/resolver/molinillo/lib/molinillo/dependency_graph/detach_vertex_named.rb
   69 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/resolver/molinillo/lib/molinillo/dependency_graph/set_payload.rb
   70 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/resolver/molinillo/lib/molinillo/dependency_graph/tag.rb
   71 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/resolver/molinillo/lib/molinillo/dependency_graph/log.rb
   72 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/resolver/molinillo/lib/molinillo/dependency_graph/vertex.rb
   73 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/resolver/molinillo/lib/molinillo/dependency_graph.rb
   74 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/resolver/molinillo/lib/molinillo/state.rb
   75 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/resolver/molinillo/lib/molinillo/modules/specification_provider.rb
   76 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/resolver/molinillo/lib/molinillo/delegates/resolution_state.rb
   77 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/resolver/molinillo/lib/molinillo/delegates/specification_provider.rb
   78 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/resolver/molinillo/lib/molinillo/resolution.rb
   79 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/resolver/molinillo/lib/molinillo/resolver.rb
   80 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/resolver/molinillo/lib/molinillo/modules/ui.rb
   81 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/resolver/molinillo/lib/molinillo.rb
   82 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/resolver/molinillo.rb
   83 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/resolver/activation_request.rb
   84 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/resolver/conflict.rb
   85 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/resolver/dependency_request.rb
   86 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/resolver/requirement_list.rb
   87 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/resolver/stats.rb
   88 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/resolver/set.rb
   89 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/resolver/api_set.rb
   90 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/resolver/composed_set.rb
   91 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/resolver/best_set.rb
   92 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/resolver/current_set.rb
   93 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/resolver/git_set.rb
   94 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/resolver/index_set.rb
   95 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/resolver/installer_set.rb
   96 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/resolver/lock_set.rb
   97 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/resolver/vendor_set.rb
   98 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/resolver/source_set.rb
   99 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/resolver/specification.rb
  100 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/resolver/spec_specification.rb
  101 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/resolver/api_specification.rb
  102 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/resolver/git_specification.rb
  103 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/resolver/index_specification.rb
  104 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/resolver/installed_specification.rb
  105 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/resolver/local_specification.rb
  106 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/resolver/lock_specification.rb
  107 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/resolver/vendor_specification.rb
  108 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/resolver.rb
  109 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/source/git.rb
  110 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/source/installed.rb
  111 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/source/specific_file.rb
  112 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/source/local.rb
  113 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/site_ruby/2.5.0/rubygems/source/lock.rb
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  274 /tmp/repro/.bundle/vendor/ruby/2.5.0/gems/puma-4.3.0/lib/puma/single.rb
  275 /tmp/repro/.bundle/vendor/ruby/2.5.0/gems/puma-4.3.0/lib/puma/launcher.rb
  276 /tmp/repro/.bundle/vendor/ruby/2.5.0/gems/puma-4.3.0/lib/puma/cli.rb
  277 /tmp/repro/.bundle/vendor/ruby/2.5.0/gems/rack-2.0.7/lib/rack.rb
  278 /tmp/repro/.bundle/vendor/ruby/2.5.0/gems/rack-2.0.7/lib/rack/builder.rb
  279 /tmp/repro/.bundle/vendor/ruby/2.5.0/gems/rack-2.0.7/lib/rack/server.rb
  280 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/json/version.rb
  281 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/ostruct.rb
  282 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/json/generic_object.rb
  283 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/json/common.rb
  284 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/json/ext/parser.so
  285 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/json/ext/generator.so
  286 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/json/ext.rb
  287 /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/json.rb
  288 /tmp/repro/.bundle/vendor/ruby/2.5.0/gems/rack-2.0.7/lib/rack/query_parser.rb
  289 /tmp/repro/.bundle/vendor/ruby/2.5.0/gems/rack-2.0.7/lib/rack/utils.rb
  290 /tmp/repro/.bundle/vendor/ruby/2.5.0/gems/rack-2.0.7/lib/rack/media_type.rb
  291 /tmp/repro/.bundle/vendor/ruby/2.5.0/gems/rack-2.0.7/lib/rack/request.rb

* Process memory map:

555555554000-555555555000 r--p 00000000 00:1a 16647644                   /home/wolf/.rbenv/versions/2.5.7/bin/ruby
555555555000-555555556000 r-xp 00001000 00:1a 16647644                   /home/wolf/.rbenv/versions/2.5.7/bin/ruby
555555556000-555555557000 r--p 00002000 00:1a 16647644                   /home/wolf/.rbenv/versions/2.5.7/bin/ruby
555555557000-555555558000 r--p 00002000 00:1a 16647644                   /home/wolf/.rbenv/versions/2.5.7/bin/ruby
555555558000-555555559000 rw-p 00003000 00:1a 16647644                   /home/wolf/.rbenv/versions/2.5.7/bin/ruby
555555559000-555556589000 rw-p 00000000 00:00 0                          [heap]
7fffe0000000-7fffe0034000 rw-p 00000000 00:00 0
7fffe0034000-7fffe4000000 ---p 00000000 00:00 0
7fffe4000000-7fffe4081000 rw-p 00000000 00:00 0
7fffe4081000-7fffe8000000 ---p 00000000 00:00 0
7fffe8000000-7fffe8021000 rw-p 00000000 00:00 0
7fffe8021000-7fffec000000 ---p 00000000 00:00 0
7fffec000000-7fffec021000 rw-p 00000000 00:00 0
7fffec021000-7ffff0000000 ---p 00000000 00:00 0
7ffff0000000-7ffff0021000 rw-p 00000000 00:00 0
7ffff0021000-7ffff4000000 ---p 00000000 00:00 0
7ffff5b5b000-7ffff5b83000 r--s 00000000 00:1a 2539781                    /usr/lib/libpthread-2.30.so
7ffff5b83000-7ffff63af000 r--s 00000000 00:1a 16647646                   /home/wolf/.rbenv/versions/2.5.7/lib/libruby.so.2.5.7
7ffff63af000-7ffff63b0000 ---p 00000000 00:00 0
7ffff63b0000-7ffff65b1000 rw-p 00000000 00:00 0
7ffff65b1000-7ffff65b2000 ---p 00000000 00:00 0
7ffff65b2000-7ffff67b3000 rw-p 00000000 00:00 0
7ffff67b3000-7ffff67b4000 ---p 00000000 00:00 0
7ffff67b4000-7ffff69b5000 rw-p 00000000 00:00 0
7ffff69b5000-7ffff69b6000 ---p 00000000 00:00 0
7ffff69b6000-7ffff6bb7000 rw-p 00000000 00:00 0
7ffff6bb7000-7ffff6bb8000 ---p 00000000 00:00 0
7ffff6bb8000-7ffff6e7a000 rw-p 00000000 00:00 0
7ffff6e7a000-7ffff6eef000 r--p 00000000 00:1a 2135056                    /usr/lib/libcrypto.so.1.1
7ffff6eef000-7ffff7089000 r-xp 00075000 00:1a 2135056                    /usr/lib/libcrypto.so.1.1
7ffff7089000-7ffff7119000 r--p 0020f000 00:1a 2135056                    /usr/lib/libcrypto.so.1.1
7ffff7119000-7ffff7145000 r--p 0029e000 00:1a 2135056                    /usr/lib/libcrypto.so.1.1
7ffff7145000-7ffff7147000 rw-p 002ca000 00:1a 2135056                    /usr/lib/libcrypto.so.1.1
7ffff7147000-7ffff714b000 rw-p 00000000 00:00 0
7ffff714b000-7ffff7168000 r--p 00000000 00:1a 2135058                    /usr/lib/libssl.so.1.1
7ffff7168000-7ffff71b4000 r-xp 0001d000 00:1a 2135058                    /usr/lib/libssl.so.1.1
7ffff71b4000-7ffff71ce000 r--p 00069000 00:1a 2135058                    /usr/lib/libssl.so.1.1
7ffff71ce000-7ffff71d7000 r--p 00082000 00:1a 2135058                    /usr/lib/libssl.so.1.1
7ffff71d7000-7ffff71db000 rw-p 0008b000 00:1a 2135058                    /usr/lib/libssl.so.1.1
7ffff71f4000-7ffff71f8000 r--p 00000000 00:32 633784                     /tmp/repro/.bundle/vendor/ruby/2.5.0/gems/puma-4.3.0/lib/puma/puma_http11.so
7ffff71f8000-7ffff71fc000 r-xp 00004000 00:32 633784                     /tmp/repro/.bundle/vendor/ruby/2.5.0/gems/puma-4.3.0/lib/puma/puma_http11.so
7ffff71fc000-7ffff71fe000 r--p 00008000 00:32 633784                     /tmp/repro/.bundle/vendor/ruby/2.5.0/gems/puma-4.3.0/lib/puma/puma_http11.so
7ffff71fe000-7ffff71ff000 r--p 00009000 00:32 633784                     /tmp/repro/.bundle/vendor/ruby/2.5.0/gems/puma-4.3.0/lib/puma/puma_http11.so
7ffff71ff000-7ffff7200000 rw-p 0000a000 00:32 633784                     /tmp/repro/.bundle/vendor/ruby/2.5.0/gems/puma-4.3.0/lib/puma/puma_http11.so
7ffff7200000-7ffff7202000 r--p 00000000 00:1a 16648426                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/digest.so
7ffff7202000-7ffff7204000 r-xp 00002000 00:1a 16648426                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/digest.so
7ffff7204000-7ffff7205000 r--p 00004000 00:1a 16648426                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/digest.so
7ffff7205000-7ffff7206000 r--p 00004000 00:1a 16648426                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/digest.so
7ffff7206000-7ffff7207000 rw-p 00005000 00:1a 16648426                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/digest.so
7ffff7207000-7ffff721b000 r--p 00000000 00:1a 16648418                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/openssl.so
7ffff721b000-7ffff724d000 r-xp 00014000 00:1a 16648418                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/openssl.so
7ffff724d000-7ffff725d000 r--p 00046000 00:1a 16648418                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/openssl.so
7ffff725d000-7ffff725f000 r--p 00055000 00:1a 16648418                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/openssl.so
7ffff725f000-7ffff7261000 rw-p 00057000 00:1a 16648418                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/openssl.so
7ffff7261000-7ffff72c3000 rw-p 00000000 00:00 0
7ffff72c3000-7ffff72c6000 r--p 00000000 00:1a 16648417                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/date_core.so
7ffff72c6000-7ffff72f5000 r-xp 00003000 00:1a 16648417                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/date_core.so
7ffff72f5000-7ffff72fc000 r--p 00032000 00:1a 16648417                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/date_core.so
7ffff72fc000-7ffff72fd000 r--p 00038000 00:1a 16648417                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/date_core.so
7ffff72fd000-7ffff72fe000 rw-p 00039000 00:1a 16648417                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/date_core.so
7ffff72fe000-7ffff72ff000 rw-p 00000000 00:00 0
7ffff72ff000-7ffff7305000 r--p 00000000 00:1a 16648438                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/socket.so
7ffff7305000-7ffff7325000 r-xp 00006000 00:1a 16648438                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/socket.so
7ffff7325000-7ffff732c000 r--p 00026000 00:1a 16648438                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/socket.so
7ffff732c000-7ffff732d000 r--p 0002c000 00:1a 16648438                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/socket.so
7ffff732d000-7ffff732e000 rw-p 0002d000 00:1a 16648438                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/socket.so
7ffff732e000-7ffff7345000 r--p 00000000 00:1a 354893                     /usr/lib/libncursesw.so.6.1
7ffff7345000-7ffff7380000 r-xp 00017000 00:1a 354893                     /usr/lib/libncursesw.so.6.1
7ffff7380000-7ffff7397000 r--p 00052000 00:1a 354893                     /usr/lib/libncursesw.so.6.1
7ffff7397000-7ffff739c000 r--p 00068000 00:1a 354893                     /usr/lib/libncursesw.so.6.1
7ffff739c000-7ffff739d000 rw-p 0006d000 00:1a 354893                     /usr/lib/libncursesw.so.6.1
7ffff739d000-7ffff73b3000 r--p 00000000 00:1a 2423956                    /usr/lib/libreadline.so.8.0
7ffff73b3000-7ffff73db000 r-xp 00016000 00:1a 2423956                    /usr/lib/libreadline.so.8.0
7ffff73db000-7ffff73e5000 r--p 0003e000 00:1a 2423956                    /usr/lib/libreadline.so.8.0
7ffff73e5000-7ffff73e8000 r--p 00047000 00:1a 2423956                    /usr/lib/libreadline.so.8.0
7ffff73e8000-7ffff73ee000 rw-p 0004a000 00:1a 2423956                    /usr/lib/libreadline.so.8.0
7ffff73ee000-7ffff73ef000 rw-p 00000000 00:00 0
7ffff73f0000-7ffff73f1000 r--p 00000000 00:1a 16648442                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/io/nonblock.so
7ffff73f1000-7ffff73f2000 r-xp 00001000 00:1a 16648442                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/io/nonblock.so
7ffff73f2000-7ffff73f3000 r--p 00002000 00:1a 16648442                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/io/nonblock.so
7ffff73f3000-7ffff73f4000 r--p 00002000 00:1a 16648442                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/io/nonblock.so
7ffff73f4000-7ffff73f5000 rw-p 00003000 00:1a 16648442                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/io/nonblock.so
7ffff73f5000-7ffff73f9000 r--p 00000000 00:32 638189                     /tmp/repro/.bundle/vendor/ruby/2.5.0/gems/nio4r-2.5.2/lib/nio4r_ext.so
7ffff73f9000-7ffff7405000 r-xp 00004000 00:32 638189                     /tmp/repro/.bundle/vendor/ruby/2.5.0/gems/nio4r-2.5.2/lib/nio4r_ext.so
7ffff7405000-7ffff7409000 r--p 00010000 00:32 638189                     /tmp/repro/.bundle/vendor/ruby/2.5.0/gems/nio4r-2.5.2/lib/nio4r_ext.so
7ffff7409000-7ffff740a000 ---p 00014000 00:32 638189                     /tmp/repro/.bundle/vendor/ruby/2.5.0/gems/nio4r-2.5.2/lib/nio4r_ext.so
7ffff740a000-7ffff740b000 r--p 00014000 00:32 638189                     /tmp/repro/.bundle/vendor/ruby/2.5.0/gems/nio4r-2.5.2/lib/nio4r_ext.so
7ffff740b000-7ffff740c000 rw-p 00015000 00:32 638189                     /tmp/repro/.bundle/vendor/ruby/2.5.0/gems/nio4r-2.5.2/lib/nio4r_ext.so
7ffff740c000-7ffff740d000 rw-p 00000000 00:00 0
7ffff740d000-7ffff740f000 r--p 00000000 00:1a 16648428                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/etc.so
7ffff740f000-7ffff7412000 r-xp 00002000 00:1a 16648428                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/etc.so
7ffff7412000-7ffff7414000 r--p 00005000 00:1a 16648428                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/etc.so
7ffff7414000-7ffff7415000 r--p 00006000 00:1a 16648428                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/etc.so
7ffff7415000-7ffff7416000 rw-p 00007000 00:1a 16648428                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/etc.so
7ffff7416000-7ffff7417000 r--p 00000000 00:1a 16648441                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/io/wait.so
7ffff7417000-7ffff7418000 r-xp 00001000 00:1a 16648441                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/io/wait.so
7ffff7418000-7ffff7419000 r--p 00002000 00:1a 16648441                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/io/wait.so
7ffff7419000-7ffff741a000 r--p 00002000 00:1a 16648441                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/io/wait.so
7ffff741a000-7ffff741b000 rw-p 00003000 00:1a 16648441                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/io/wait.so
7ffff741b000-7ffff741e000 r--p 00000000 00:1a 16648455                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/readline.so
7ffff741e000-7ffff7422000 r-xp 00003000 00:1a 16648455                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/readline.so
7ffff7422000-7ffff7423000 r--p 00007000 00:1a 16648455                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/readline.so
7ffff7423000-7ffff7424000 ---p 00008000 00:1a 16648455                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/readline.so
7ffff7424000-7ffff7425000 r--p 00008000 00:1a 16648455                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/readline.so
7ffff7425000-7ffff7426000 rw-p 00009000 00:1a 16648455                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/readline.so
7ffff742a000-7ffff742d000 r--p 00000000 00:1a 2722689                    /usr/lib/libgcc_s.so.1
7ffff742d000-7ffff743e000 r-xp 00003000 00:1a 2722689                    /usr/lib/libgcc_s.so.1
7ffff743e000-7ffff7442000 r--p 00014000 00:1a 2722689                    /usr/lib/libgcc_s.so.1
7ffff7442000-7ffff7443000 r--p 00017000 00:1a 2722689                    /usr/lib/libgcc_s.so.1
7ffff7443000-7ffff7444000 rw-p 00018000 00:1a 2722689                    /usr/lib/libgcc_s.so.1
7ffff7447000-7ffff7470000 r--s 00000000 00:1a 16647644                   /home/wolf/.rbenv/versions/2.5.7/bin/ruby
7ffff7470000-7ffff7472000 r--p 00000000 00:1a 16648446                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/json/ext/generator.so
7ffff7472000-7ffff7479000 r-xp 00002000 00:1a 16648446                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/json/ext/generator.so
7ffff7479000-7ffff747b000 r--p 00009000 00:1a 16648446                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/json/ext/generator.so
7ffff747b000-7ffff747c000 r--p 0000a000 00:1a 16648446                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/json/ext/generator.so
7ffff747c000-7ffff747d000 rw-p 0000b000 00:1a 16648446                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/json/ext/generator.so
7ffff747d000-7ffff747f000 r--p 00000000 00:1a 16648447                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/json/ext/parser.so
7ffff747f000-7ffff7483000 r-xp 00002000 00:1a 16648447                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/json/ext/parser.so
7ffff7483000-7ffff7484000 r--p 00006000 00:1a 16648447                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/json/ext/parser.so
7ffff7484000-7ffff7485000 ---p 00007000 00:1a 16648447                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/json/ext/parser.so
7ffff7485000-7ffff7486000 r--p 00007000 00:1a 16648447                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/json/ext/parser.so
7ffff7486000-7ffff7487000 rw-p 00008000 00:1a 16648447                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/json/ext/parser.so
7ffff7487000-7ffff7588000 rw-p 00000000 00:00 0
7ffff7588000-7ffff786e000 r--p 00000000 00:1a 2540446                    /usr/lib/locale/locale-archive
7ffff786e000-7ffff7871000 rw-p 00000000 00:00 0
7ffff7871000-7ffff7896000 r--p 00000000 00:1a 2539737                    /usr/lib/libc-2.30.so
7ffff7896000-7ffff79e3000 r-xp 00025000 00:1a 2539737                    /usr/lib/libc-2.30.so
7ffff79e3000-7ffff7a2d000 r--p 00172000 00:1a 2539737                    /usr/lib/libc-2.30.so
7ffff7a2d000-7ffff7a2e000 ---p 001bc000 00:1a 2539737                    /usr/lib/libc-2.30.so
7ffff7a2e000-7ffff7a31000 r--p 001bc000 00:1a 2539737                    /usr/lib/libc-2.30.so
7ffff7a31000-7ffff7a34000 rw-p 001bf000 00:1a 2539737                    /usr/lib/libc-2.30.so
7ffff7a34000-7ffff7a3a000 rw-p 00000000 00:00 0
7ffff7a3a000-7ffff7a49000 r--p 00000000 00:1a 2539752                    /usr/lib/libm-2.30.so
7ffff7a49000-7ffff7ae5000 r-xp 0000f000 00:1a 2539752                    /usr/lib/libm-2.30.so
7ffff7ae5000-7ffff7b7e000 r--p 000ab000 00:1a 2539752                    /usr/lib/libm-2.30.so
7ffff7b7e000-7ffff7b7f000 r--p 00143000 00:1a 2539752                    /usr/lib/libm-2.30.so
7ffff7b7f000-7ffff7b80000 rw-p 00144000 00:1a 2539752                    /usr/lib/libm-2.30.so
7ffff7b80000-7ffff7b81000 r--p 00000000 00:1a 2539742                    /usr/lib/libcrypt-2.30.so
7ffff7b81000-7ffff7b87000 r-xp 00001000 00:1a 2539742                    /usr/lib/libcrypt-2.30.so
7ffff7b87000-7ffff7b89000 r--p 00007000 00:1a 2539742                    /usr/lib/libcrypt-2.30.so
7ffff7b89000-7ffff7b8a000 ---p 00009000 00:1a 2539742                    /usr/lib/libcrypt-2.30.so
7ffff7b8a000-7ffff7b8b000 r--p 00009000 00:1a 2539742                    /usr/lib/libcrypt-2.30.so
7ffff7b8b000-7ffff7b8c000 rw-p 0000a000 00:1a 2539742                    /usr/lib/libcrypt-2.30.so
7ffff7b8c000-7ffff7bba000 rw-p 00000000 00:00 0
7ffff7bba000-7ffff7bbb000 r--p 00000000 00:1a 2539746                    /usr/lib/libdl-2.30.so
7ffff7bbb000-7ffff7bbc000 r-xp 00001000 00:1a 2539746                    /usr/lib/libdl-2.30.so
7ffff7bbc000-7ffff7bbd000 r--p 00002000 00:1a 2539746                    /usr/lib/libdl-2.30.so
7ffff7bbd000-7ffff7bbe000 r--p 00002000 00:1a 2539746                    /usr/lib/libdl-2.30.so
7ffff7bbe000-7ffff7bbf000 rw-p 00003000 00:1a 2539746                    /usr/lib/libdl-2.30.so
7ffff7bbf000-7ffff7bcf000 r--p 00000000 00:1a 7802                       /usr/lib/libgmp.so.10.3.2
7ffff7bcf000-7ffff7c39000 r-xp 00010000 00:1a 7802                       /usr/lib/libgmp.so.10.3.2
7ffff7c39000-7ffff7c50000 r--p 0007a000 00:1a 7802                       /usr/lib/libgmp.so.10.3.2
7ffff7c50000-7ffff7c52000 r--p 00090000 00:1a 7802                       /usr/lib/libgmp.so.10.3.2
7ffff7c52000-7ffff7c53000 rw-p 00092000 00:1a 7802                       /usr/lib/libgmp.so.10.3.2
7ffff7c53000-7ffff7c5a000 r--p 00000000 00:1a 2539781                    /usr/lib/libpthread-2.30.so
7ffff7c5a000-7ffff7c6a000 r-xp 00007000 00:1a 2539781                    /usr/lib/libpthread-2.30.so
7ffff7c6a000-7ffff7c6f000 r--p 00017000 00:1a 2539781                    /usr/lib/libpthread-2.30.so
7ffff7c6f000-7ffff7c70000 r--p 0001b000 00:1a 2539781                    /usr/lib/libpthread-2.30.so
7ffff7c70000-7ffff7c71000 rw-p 0001c000 00:1a 2539781                    /usr/lib/libpthread-2.30.so
7ffff7c71000-7ffff7c75000 rw-p 00000000 00:00 0
7ffff7c75000-7ffff7c76000 r--p 00000000 00:1a 16648422                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/cgi/escape.so
7ffff7c76000-7ffff7c78000 r-xp 00001000 00:1a 16648422                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/cgi/escape.so
7ffff7c78000-7ffff7c79000 r--p 00003000 00:1a 16648422                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/cgi/escape.so
7ffff7c79000-7ffff7c7a000 r--p 00003000 00:1a 16648422                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/cgi/escape.so
7ffff7c7a000-7ffff7c7b000 rw-p 00004000 00:1a 16648422                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/cgi/escape.so
7ffff7c7b000-7ffff7c7d000 r--p 00000000 00:1a 16648450                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/pathname.so
7ffff7c7d000-7ffff7c82000 r-xp 00002000 00:1a 16648450                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/pathname.so
7ffff7c82000-7ffff7c84000 r--p 00007000 00:1a 16648450                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/pathname.so
7ffff7c84000-7ffff7c85000 r--p 00008000 00:1a 16648450                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/pathname.so
7ffff7c85000-7ffff7c86000 rw-p 00009000 00:1a 16648450                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/pathname.so
7ffff7c86000-7ffff7c88000 r--p 00000000 00:1a 16648457                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/stringio.so
7ffff7c88000-7ffff7c8d000 r-xp 00002000 00:1a 16648457                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/stringio.so
7ffff7c8d000-7ffff7c8f000 r--p 00007000 00:1a 16648457                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/stringio.so
7ffff7c8f000-7ffff7c90000 r--p 00008000 00:1a 16648457                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/stringio.so
7ffff7c90000-7ffff7c91000 rw-p 00009000 00:1a 16648457                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/stringio.so
7ffff7c91000-7ffff7c92000 r--p 00000000 00:1a 16648522                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/enc/trans/transdb.so
7ffff7c92000-7ffff7c94000 r-xp 00001000 00:1a 16648522                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/enc/trans/transdb.so
7ffff7c94000-7ffff7c95000 r--p 00003000 00:1a 16648522                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/enc/trans/transdb.so
7ffff7c95000-7ffff7c96000 r--p 00003000 00:1a 16648522                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/enc/trans/transdb.so
7ffff7c96000-7ffff7c97000 rw-p 00004000 00:1a 16648522                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/enc/trans/transdb.so
7ffff7c97000-7ffff7c98000 r--p 00000000 00:1a 16648501                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/enc/encdb.so
7ffff7c98000-7ffff7c99000 r-xp 00001000 00:1a 16648501                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/enc/encdb.so
7ffff7c99000-7ffff7c9a000 r--p 00002000 00:1a 16648501                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/enc/encdb.so
7ffff7c9a000-7ffff7c9b000 r--p 00002000 00:1a 16648501                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/enc/encdb.so
7ffff7c9b000-7ffff7c9c000 rw-p 00003000 00:1a 16648501                   /home/wolf/.rbenv/versions/2.5.7/lib/ruby/2.5.0/x86_64-linux/enc/encdb.so
7ffff7c9c000-7ffff7c9d000 ---p 00000000 00:00 0
7ffff7c9d000-7ffff7ca1000 rw-p 00000000 00:00 0
7ffff7ca1000-7ffff7cca000 r--p 00000000 00:1a 16647646                   /home/wolf/.rbenv/versions/2.5.7/lib/libruby.so.2.5.7
7ffff7cca000-7ffff7eda000 r-xp 00029000 00:1a 16647646                   /home/wolf/.rbenv/versions/2.5.7/lib/libruby.so.2.5.7
7ffff7eda000-7ffff7fb2000 r--p 00239000 00:1a 16647646                   /home/wolf/.rbenv/versions/2.5.7/lib/libruby.so.2.5.7
7ffff7fb2000-7ffff7fb3000 ---p 00311000 00:1a 16647646                   /home/wolf/.rbenv/versions/2.5.7/lib/libruby.so.2.5.7
7ffff7fb3000-7ffff7fb8000 r--p 00311000 00:1a 16647646                   /home/wolf/.rbenv/versions/2.5.7/lib/libruby.so.2.5.7
7ffff7fb8000-7ffff7fbb000 rw-p 00316000 00:1a 16647646                   /home/wolf/.rbenv/versions/2.5.7/lib/libruby.so.2.5.7
7ffff7fbb000-7ffff7fce000 rw-p 00000000 00:00 0
7ffff7fce000-7ffff7fd1000 r--p 00000000 00:00 0                          [vvar]
7ffff7fd1000-7ffff7fd2000 r-xp 00000000 00:00 0                          [vdso]
7ffff7fd2000-7ffff7fd4000 r--p 00000000 00:1a 2539726                    /usr/lib/ld-2.30.so
7ffff7fd4000-7ffff7ff3000 r-xp 00002000 00:1a 2539726                    /usr/lib/ld-2.30.so
7ffff7ff3000-7ffff7ffb000 r--p 00021000 00:1a 2539726                    /usr/lib/ld-2.30.so
7ffff7ffc000-7ffff7ffd000 r--p 00029000 00:1a 2539726                    /usr/lib/ld-2.30.so
7ffff7ffd000-7ffff7ffe000 rw-p 0002a000 00:1a 2539726                    /usr/lib/ld-2.30.so
7ffff7ffe000-7ffff7fff000 rw-p 00000000 00:00 0
7fffff800000-7ffffffff000 rw-p 00000000 00:00 0                          [stack]
ffffffffff600000-ffffffffff601000 --xp 00000000 00:00 0                  [vsyscall]


[NOTE]
You may have encountered a bug in the Ruby interpreter or extension libraries.
Bug reports are welcome.
For details: http://www.ruby-lang.org/bugreport.html

Aborted (core dumped)

Seems to work fine in 2.6.

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