Jira (FACT-2554) Distro-packaged facter (3.14.2) on Fedora 31 segfault on external fact from .yaml

[bbradley (Jira)]

bbradley created an issue

Facter / FACT-2554 Distro-packaged facter (3.14.2) on Fedora 31 segfault on external fact from .yaml Issue Type: Bug Assignee: Unassigned Attachments: facter_f31_barf.txt Created: 2020/04/14 6:01 PM Environment: Stock Fedora 31 install with distro-provided versions of facter, puppet and ruby... root@saltmaster01:0 ~ # uname -a Linux saltmaster01.int 5.5.15-200.fc31.x86_64 #1 SMP Thu Apr 2 19:16:17 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux   root@saltmaster01:0 ~ # dnf list installed | grep fact facter.x86_64 3.14.2-1.fc31 @fedora ruby-facter.x86_64 3.14.2-1.fc31 @fedora   root@saltmaster01:0 ~ # dnf list installed | grep puppet puppet.noarch 5.5.10-9.fc31 @updates puppet-headless.noarch 5.5.10-9.fc31 @updates   root@saltmaster01:0 ~ # dnf list installed | grep ruby libselinux-ruby.x86_64 2.9-5.fc31 @fedora ruby.x86_64 2.6.5-124.fc31 @updates ruby-augeas.x86_64 0.5.0-21.fc31 @fedora ruby-facter.x86_64 3.14.2-1.fc31 @fedora ruby-libs.x86_64 2.6.5-124.fc31 @updates rubygem-bigdecimal.x86_64 1.4.1-124.fc31 @updates rubygem-did_you_mean.noarch 1.3.0-124.fc31 @updates rubygem-io-console.x86_64 0.4.7-124.fc31 @updates rubygem-irb.noarch 1.0.0-124.fc31 @updates rubygem-json.x86_64 2.2.0-201.fc31 @fedora rubygem-multi_json.noarch 1.13.1-4.fc31 @fedora rubygem-openssl.x86_64 2.1.2-124.fc31 @updates rubygem-pathspec.noarch 0.2.1-5.fc31 @fedora rubygem-psych.x86_64 3.1.0-124.fc31 @updates rubygem-rdoc.noarch 6.1.2-124.fc31 @updates rubygem-rgen.noarch 0.8.4-2.fc31 @fedora rubygem-ruby-shadow.x86_64 2.5.0-10.fc31 @fedora rubygems.noarch 3.0.3-124.fc31 @updates rubypick.noarch 1.1.1-11.fc31 @fedora Priority: Normal Reporter: bbradley Segfault on loading a simple YAML file as external fact... root@saltmaster01:0 facts.d # pwd /etc/facter/facts.d   root@saltmaster01:0 facts.d # cat hello.yaml --- hello: world   root@saltmaster01:0 facts.d # facter --debug 2020-04-15 00:49:57.684971 INFO puppetlabs.facter - executed with command line: --debug. 2020-04-15 00:49:57.685251 DEBUG leatherman.ruby:505 - ruby was found at "/usr/bin/ruby". 2020-04-15 00:49:57.685392 DEBUG leatherman.execution:93 - executing command: /usr/bin/ruby -e print(['libdir', 'archlibdir', 'sitearchlibdir', 'bindir'].find do |name|dir = RbConfig::CONFIG[name];next unless dir;file = File.join(dir, RbConfig::CONFIG['LIBRUBY_SO']);break file if File.exist? file;false end) 2020-04-15 00:49:57.772567 DEBUG | - /usr/lib64/libruby.so.2.6.5 2020-04-15 00:49:57.772732 DEBUG leatherman.execution:563 - process exited with status code 0. 2020-04-15 00:49:57.774891 INFO leatherman.ruby:138 - ruby loaded from "/usr/lib64/libruby.so.2.6.5". 2020-04-15 00:49:57.775165 DEBUG leatherman.dynamic_library:77 - symbol rb_data_object_alloc not found in library /usr/lib64/libruby.so.2.6.5, trying alias rb_data_object_wrap. 2020-04-15 00:49:57.856253 INFO leatherman.ruby:187 - using ruby version 2.6.5 2020-04-15 00:49:57.856368 INFO puppetlabs.facter - resolving all facts. 2020-04-15 00:49:57.856477 DEBUG puppetlabs.facter - fact "facterversion" has resolved to "3.14.2". 2020-04-15 00:49:57.856668 DEBUG leatherman.file_util:65 - Error reading file: No such file or directory 2020-04-15 00:49:57.856960 DEBUG puppetlabs.facter - loading all custom facts. 2020-04-15 00:49:57.857026 DEBUG puppetlabs.facter - loading custom fact directories from config file 2020-04-15 00:49:57.857116 DEBUG puppetlabs.facter - skipping external facts for "/opt/puppetlabs/facter/facts.d": No such file or directory 2020-04-15 00:49:57.857184 DEBUG puppetlabs.facter - searching "/etc/facter/facts.d" for external facts. 2020-04-15 00:49:57.857288 DEBUG puppetlabs.facter - resolving facts from YAML file "/etc/facter/facts.d/hello.yaml". -e: [BUG] Segmentation fault at 0x0000000000000000 ruby 2.6.5p114 (2019-10-01 revision 67812) [x86_64-linux]   ...   [NOTE] You may have encountered a bug in the Ruby interpreter or extension libraries. Bug reports are welcome. For details: https://www.ruby-lang.org/bugreport.html   Aborted (core dumped) Remove .yaml fact and replace with .txt external fact... root@saltmaster01:0 facts.d # ls -l total 4 -rw-r--r--. 1 root root 12 Apr 15 00:55 hello.txt   root@saltmaster01:0 facts.d # cat hello.txt hello=world   root@saltmaster01:0 facts.d # facter --debug 2020-04-15 00:56:29.995843 INFO puppetlabs.facter - executed with command line: --debug. 2020-04-15 00:56:29.996016 DEBUG leatherman.ruby:505 - ruby was found at "/usr/bin/ruby". 2020-04-15 00:56:29.996103 DEBUG leatherman.execution:93 - executing command: /usr/bin/ruby -e print(['libdir', 'archlibdir', 'sitearchlibdir', 'bindir'].find do |name|dir = RbConfig::CONFIG[name];next unless dir;file = File.join(dir, RbConfig::CONFIG['LIBRUBY_SO']);break file if File.exist? file;false end) 2020-04-15 00:56:30.084541 DEBUG | - /usr/lib64/libruby.so.2.6.5 2020-04-15 00:56:30.084689 DEBUG leatherman.execution:563 - process exited with status code 0. 2020-04-15 00:56:30.086642 INFO leatherman.ruby:138 - ruby loaded from "/usr/lib64/libruby.so.2.6.5". 2020-04-15 00:56:30.086820 DEBUG leatherman.dynamic_library:77 - symbol rb_data_object_alloc not found in library /usr/lib64/libruby.so.2.6.5, trying alias rb_data_object_wrap. 2020-04-15 00:56:30.165503 INFO leatherman.ruby:187 - using ruby version 2.6.5 2020-04-15 00:56:30.165578 INFO puppetlabs.facter - resolving all facts. 2020-04-15 00:56:30.165652 DEBUG puppetlabs.facter - fact "facterversion" has resolved to "3.14.2". 2020-04-15 00:56:30.165836 DEBUG leatherman.file_util:65 - Error reading file: No such file or directory 2020-04-15 00:56:30.166114 DEBUG puppetlabs.facter - loading all custom facts. 2020-04-15 00:56:30.166156 DEBUG puppetlabs.facter - loading custom fact directories from config file 2020-04-15 00:56:30.166235 DEBUG puppetlabs.facter - skipping external facts for "/opt/puppetlabs/facter/facts.d": No such file or directory 2020-04-15 00:56:30.166274 DEBUG puppetlabs.facter - searching "/etc/facter/facts.d" for external facts. 2020-04-15 00:56:30.166322 DEBUG puppetlabs.facter - resolving facts from text file "/etc/facter/facts.d/hello.txt". 2020-04-15 00:56:30.166414 DEBUG puppetlabs.facter - fact "hello" has resolved to "world". 2020-04-15 00:56:30.166460 DEBUG puppetlabs.facter - completed resolving facts from text file "/etc/facter/facts.d/hello.txt". 2020-04-15 00:56:30.166512 DEBUG puppetlabs.facter - skipping external facts for "/etc/puppetlabs/facter/facts.d": No such file or directory 2020-04-15 00:56:30.166577 DEBUG puppetlabs.facter - resolving ruby facts. ... timezone => UTC virtual => vmware   root@saltmaster01:0 facts.d # echo $? 0 Add Comment

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[Mihai Buzgau (Jira)]

Mihai Buzgau updated an issue

Facter / FACT-2554 Distro-packaged facter (3.14.2) on Fedora 31 segfault on external fact from .yaml

Change By: Mihai Buzgau Sprint: NW - 2020-04-29

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[Mihai Buzgau (Jira)]

Mihai Buzgau updated an issue

Facter / FACT-2554 Distro-packaged facter (3.14.2) on Fedora 31 segfault on external fact from .yaml

Change By: Mihai Buzgau Team: Night's Watch

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[Mihai Buzgau (Jira)]

Mihai Buzgau updated an issue

Facter / FACT-2554 Distro-packaged facter (3.14.2) on Fedora 31 segfault on external fact from .yaml

Change By: Mihai Buzgau Story Points: 3

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[Gabriel Nagy (Jira)]

Gabriel Nagy assigned an issue to Gabriel Nagy

Facter / FACT-2554 Distro-packaged facter (3.14.2) on Fedora 31 segfault on external fact from .yaml

Change By: Gabriel Nagy Assignee: Gabriel Nagy

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[Gabriel Nagy (Jira)]

Gabriel Nagy commented on FACT-2554

Re: Distro-packaged facter (3.14.2) on Fedora 31 segfault on external fact from .yaml Hi, I managed to reproduce this after upgrading yaml-cpp from 0.6.2 to 0.6.3 on Fedora 31. So basically: build facter with yaml-cpp 0.6.2, then upgrade yaml-cpp to 0.6.3 => segfault build facter with yaml-cpp 0.6.3, then downgrade yaml.cpp to 0.6.2 => segfault After building with debug symbols, this showed up: ./bin/facter: symbol lookup error: /home/repo/facter/build/lib/libfacter.so.3.14.10: undefined symbol: _ZN4YAML6detail9node_data12empty_scalarB5cxx11E This seems to be an ABI break in yaml-cpp, and it was also reported back in November on the yaml-cpp GitHub project: https://github.com/jbeder/yaml-cpp/issues/789. There are some workarounds for this: downgrade yaml-cpp back to 0.6.2 if possible get Fedora maintainers to rebuild the facter package with yaml-cpp 0.6.3 use the puppet-agent AIO package which provides facter with a functioning vendored yaml-cpp Either way, there's nothing we can do from our side, unfortunately. Thanks, Gabriel

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