Forum: Ruby-core [ruby-trunk - Bug #5990][Open] Random Segmentation Fault when running on Linux Fedora

Issue #5990 has been reported by Blair Silverberg.

----------------------------------------
Bug #5990: Random Segmentation Fault when running on Linux Fedora
https://bugs.ruby-lang.org/issues/5990

Author: Blair Silverberg
Status: Open
Priority: Normal
Assignee:
Category:
Target version:
ruby -v: 1.9.2p290


I am parsing a large library of html documents with ruby 
mechanize/nokogiri. Randomly, I encounter a segmentation fault.

This happens on both ruby 1.9.2 (ruby 1.9.2p290 (2011-07-09 revision 
32553) [x86_64-linux]) and 1.9.3 (ruby 1.9.3p0 (2011-10-30 revision 
33570) [x86_64-linux])

I am running Linux Fedora Laughlin 16 on rackspace

Linux 2.6.35.6-45.fc14.x86_64 #1 SMP Mon Oct 18 23:57:44 UTC 2010 x86_64 
x86_64 x86_64 GNU/Linux

Fedora release 14 (Laughlin)
Kernel \r on an \m (\l)



/root/code/myteam/classes/profile_page_scraper.rb:116: [BUG] 
Segmentation fault
ruby 1.9.2p290 (2011-07-09 revision 32553) [x86_64-linux]

-- control frame ----------
c:0022 p:0010 s:0088 b:0086 l:000085 d:000085 METHOD 
/root/code/myteam/classes/profile_page_scraper.rb:116
c:0021 p:0027 s:0082 b:0080 l:000079 d:000079 METHOD 
/root/code/myteam/classes/profile_page_scraper.rb:120
c:0020 p:0017 s:0076 b:0074 l:001ed8 d:000073 BLOCK 
/root/code/myteam/classes/mysite_scraper.rb:115
c:0019 p:0015 s:0069 b:0069 l:000059 d:000068 BLOCK 
/usr/local/rvm/gems/ruby-1.9.2-p290/gems/nokogiri-1.5.0/lib/nokogiri/xml/node_set.rb:239
c:0018 p:---- s:0066 b:0066 l:000065 d:000065 FINISH
c:0017 p:---- s:0064 b:0064 l:000063 d:000063 CFUNC  :upto
c:0016 p:0023 s:0060 b:0060 l:000059 d:000059 METHOD 
/usr/local/rvm/gems/ruby-1.9.2-p290/gems/nokogiri-1.5.0/lib/nokogiri/xml/node_set.rb:238
c:0015 p:0924 s:0056 b:0056 l:001ed8 d:001ed8 METHOD 
/root/code/myteam/classes/mysite_scraper.rb:113
c:0014 p:0032 s:0045 b:0045 l:000036 d:000044 BLOCK 
/root/code/myteam/scrape_user.rb:23
c:0013 p:---- s:0042 b:0042 l:000041 d:000041 FINISH
c:0012 p:---- s:0040 b:0040 l:000039 d:000039 CFUNC  :each
c:0011 p:0120 s:0037 b:0037 l:000036 d:000036 TOP 
/root/code/myteam/scrape_user.rb:21
c:0010 p:---- s:0034 b:0034 l:000033 d:000033 FINISH
c:0009 p:---- s:0032 b:0032 l:000031 d:000031 CFUNC  :require
c:0008 p:0036 s:0028 b:0028 l:000027 d:000027 METHOD 
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36
c:0007 p:0056 s:0021 b:0021 l:000012 d:000020 BLOCK 
/root/code/myteam/helpers/helpers.rb:7
c:0006 p:---- s:0018 b:0018 l:000017 d:000017 FINISH
c:0005 p:---- s:0016 b:0016 l:000015 d:000015 CFUNC  :each
c:0004 p:0066 s:0013 b:0013 l:000012 d:000012 METHOD 
/root/code/myteam/helpers/helpers.rb:5
c:0003 p:0050 s:0007 b:0007 l:0000b8 d:002340 EVAL   ./scrape_user.rb:6
c:0002 p:---- s:0004 b:0004 l:000003 d:000003 FINISH
c:0001 p:0000 s:0002 b:0002 l:0000b8 d:0000b8 TOP
---------------------------
-- Ruby level backtrace information 
----------------------------------------
./scrape_user.rb:6:in `<main>'
/root/code/myteam/helpers/helpers.rb:5:in `require_all'
/root/code/myteam/helpers/helpers.rb:5:in `each'
/root/code/myteam/helpers/helpers.rb:7:in `block in require_all'
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in 
`require'
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in 
`require'
/root/code/myteam/scrape_user.rb:21:in `<top (required)>'
/root/code/myteam/scrape_user.rb:21:in `each'
/root/code/myteam/scrape_user.rb:23:in `block in <top (required)>'
/root/code/myteam/classes/mysite_scraper.rb:113:in `scrape_user'
/usr/local/rvm/gems/ruby-1.9.2-p290/gems/nokogiri-1.5.0/lib/nokogiri/xml/node_set.rb:238:in 
`each'
/usr/local/rvm/gems/ruby-1.9.2-p290/gems/nokogiri-1.5.0/lib/nokogiri/xml/node_set.rb:238:in 
`upto'
/usr/local/rvm/gems/ruby-1.9.2-p290/gems/nokogiri-1.5.0/lib/nokogiri/xml/node_set.rb:239:in 
`block in each'
/root/code/myteam/classes/mysite_scraper.rb:115:in `block in 
scrape_user'
/root/code/myteam/classes/profile_page_scraper.rb:120:in `get_my_url'
/root/code/myteam/classes/profile_page_scraper.rb:116:in `get_my_id'

-- C level backtrace information 
-------------------------------------------
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(rb_vm_bugreport+0x5f) 
[0x7fc76ec380cf]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x60564) 
[0x7fc76eb17564]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(rb_bug+0xb3) 
[0x7fc76eb18493]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x1143b5) 
[0x7fc76ebcb3b5]
/lib64/libpthread.so.0() [0x328540eeb0]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(rb_method_entry_get_without_cache+0x20) 
[0x7fc76ec25750]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x176965) 
[0x7fc76ec2d965]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x176f5b) 
[0x7fc76ec2df5b]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(rb_yield+0x47) 
[0x7fc76ec32e57]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0xaa161) 
[0x7fc76eb61161]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x17afa6) 
[0x7fc76ec31fa6]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x1710ee) 
[0x7fc76ec280ee]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x176f5b) 
[0x7fc76ec2df5b]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(rb_yield+0x47) 
[0x7fc76ec32e57]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(rb_ary_each+0x46) 
[0x7fc76eae6816]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x17afa6) 
[0x7fc76ec31fa6]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x1710ee) 
[0x7fc76ec280ee]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x176f5b) 
[0x7fc76ec2df5b]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(rb_iseq_eval+0x1f0) 
[0x7fc76ec33340]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x6a0d0) 
[0x7fc76eb210d0]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(rb_require_safe+0x6cf) 
[0x7fc76eb225cf]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x17afa6) 
[0x7fc76ec31fa6]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x1710ee) 
[0x7fc76ec280ee]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x176f5b) 
[0x7fc76ec2df5b]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(rb_yield+0x47) 
[0x7fc76ec32e57]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(rb_ary_each+0x46) 
[0x7fc76eae6816]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x17afa6) 
[0x7fc76ec31fa6]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x1710ee) 
[0x7fc76ec280ee]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x176f5b) 
[0x7fc76ec2df5b]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(rb_iseq_eval_main+0xb1) 
[0x7fc76ec33441]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x66a1a) 
[0x7fc76eb1da1a]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(ruby_exec_node+0x1d) 
[0x7fc76eb1e88d]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(ruby_run_node+0x1e) 
[0x7fc76eb20afe]
ruby(main+0x4b) [0x40091b]
/lib64/libc.so.6(__libc_start_main+0xfd) [0x3284c1ee5d]
ruby() [0x400809]

[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

Issue #5990 has been updated by Yui NARUSE.

Status changed from Open to Feedback

Could you show a small reproducible code?
----------------------------------------
Bug #5990: Random Segmentation Fault when running on Linux Fedora
https://bugs.ruby-lang.org/issues/5990

Author: Blair Silverberg
Status: Feedback
Priority: Normal
Assignee:
Category:
Target version:
ruby -v: 1.9.2p290


I am parsing a large library of html documents with ruby 
mechanize/nokogiri. Randomly, I encounter a segmentation fault.

This happens on both ruby 1.9.2 (ruby 1.9.2p290 (2011-07-09 revision 
32553) [x86_64-linux]) and 1.9.3 (ruby 1.9.3p0 (2011-10-30 revision 
33570) [x86_64-linux])

I am running Linux Fedora Laughlin 16 on rackspace

Linux 2.6.35.6-45.fc14.x86_64 #1 SMP Mon Oct 18 23:57:44 UTC 2010 x86_64 
x86_64 x86_64 GNU/Linux

Fedora release 14 (Laughlin)
Kernel \r on an \m (\l)



/root/code/myteam/classes/profile_page_scraper.rb:116: [BUG] 
Segmentation fault
ruby 1.9.2p290 (2011-07-09 revision 32553) [x86_64-linux]

-- control frame ----------
c:0022 p:0010 s:0088 b:0086 l:000085 d:000085 METHOD 
/root/code/myteam/classes/profile_page_scraper.rb:116
c:0021 p:0027 s:0082 b:0080 l:000079 d:000079 METHOD 
/root/code/myteam/classes/profile_page_scraper.rb:120
c:0020 p:0017 s:0076 b:0074 l:001ed8 d:000073 BLOCK 
/root/code/myteam/classes/mysite_scraper.rb:115
c:0019 p:0015 s:0069 b:0069 l:000059 d:000068 BLOCK 
/usr/local/rvm/gems/ruby-1.9.2-p290/gems/nokogiri-1.5.0/lib/nokogiri/xml/node_set.rb:239
c:0018 p:---- s:0066 b:0066 l:000065 d:000065 FINISH
c:0017 p:---- s:0064 b:0064 l:000063 d:000063 CFUNC  :upto
c:0016 p:0023 s:0060 b:0060 l:000059 d:000059 METHOD 
/usr/local/rvm/gems/ruby-1.9.2-p290/gems/nokogiri-1.5.0/lib/nokogiri/xml/node_set.rb:238
c:0015 p:0924 s:0056 b:0056 l:001ed8 d:001ed8 METHOD 
/root/code/myteam/classes/mysite_scraper.rb:113
c:0014 p:0032 s:0045 b:0045 l:000036 d:000044 BLOCK 
/root/code/myteam/scrape_user.rb:23
c:0013 p:---- s:0042 b:0042 l:000041 d:000041 FINISH
c:0012 p:---- s:0040 b:0040 l:000039 d:000039 CFUNC  :each
c:0011 p:0120 s:0037 b:0037 l:000036 d:000036 TOP 
/root/code/myteam/scrape_user.rb:21
c:0010 p:---- s:0034 b:0034 l:000033 d:000033 FINISH
c:0009 p:---- s:0032 b:0032 l:000031 d:000031 CFUNC  :require
c:0008 p:0036 s:0028 b:0028 l:000027 d:000027 METHOD 
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36
c:0007 p:0056 s:0021 b:0021 l:000012 d:000020 BLOCK 
/root/code/myteam/helpers/helpers.rb:7
c:0006 p:---- s:0018 b:0018 l:000017 d:000017 FINISH
c:0005 p:---- s:0016 b:0016 l:000015 d:000015 CFUNC  :each
c:0004 p:0066 s:0013 b:0013 l:000012 d:000012 METHOD 
/root/code/myteam/helpers/helpers.rb:5
c:0003 p:0050 s:0007 b:0007 l:0000b8 d:002340 EVAL   ./scrape_user.rb:6
c:0002 p:---- s:0004 b:0004 l:000003 d:000003 FINISH
c:0001 p:0000 s:0002 b:0002 l:0000b8 d:0000b8 TOP
---------------------------
-- Ruby level backtrace information 
----------------------------------------
./scrape_user.rb:6:in `<main>'
/root/code/myteam/helpers/helpers.rb:5:in `require_all'
/root/code/myteam/helpers/helpers.rb:5:in `each'
/root/code/myteam/helpers/helpers.rb:7:in `block in require_all'
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in 
`require'
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in 
`require'
/root/code/myteam/scrape_user.rb:21:in `<top (required)>'
/root/code/myteam/scrape_user.rb:21:in `each'
/root/code/myteam/scrape_user.rb:23:in `block in <top (required)>'
/root/code/myteam/classes/mysite_scraper.rb:113:in `scrape_user'
/usr/local/rvm/gems/ruby-1.9.2-p290/gems/nokogiri-1.5.0/lib/nokogiri/xml/node_set.rb:238:in 
`each'
/usr/local/rvm/gems/ruby-1.9.2-p290/gems/nokogiri-1.5.0/lib/nokogiri/xml/node_set.rb:238:in 
`upto'
/usr/local/rvm/gems/ruby-1.9.2-p290/gems/nokogiri-1.5.0/lib/nokogiri/xml/node_set.rb:239:in 
`block in each'
/root/code/myteam/classes/mysite_scraper.rb:115:in `block in 
scrape_user'
/root/code/myteam/classes/profile_page_scraper.rb:120:in `get_my_url'
/root/code/myteam/classes/profile_page_scraper.rb:116:in `get_my_id'

-- C level backtrace information 
-------------------------------------------
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(rb_vm_bugreport+0x5f) 
[0x7fc76ec380cf]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x60564) 
[0x7fc76eb17564]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(rb_bug+0xb3) 
[0x7fc76eb18493]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x1143b5) 
[0x7fc76ebcb3b5]
/lib64/libpthread.so.0() [0x328540eeb0]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(rb_method_entry_get_without_cache+0x20) 
[0x7fc76ec25750]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x176965) 
[0x7fc76ec2d965]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x176f5b) 
[0x7fc76ec2df5b]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(rb_yield+0x47) 
[0x7fc76ec32e57]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0xaa161) 
[0x7fc76eb61161]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x17afa6) 
[0x7fc76ec31fa6]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x1710ee) 
[0x7fc76ec280ee]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x176f5b) 
[0x7fc76ec2df5b]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(rb_yield+0x47) 
[0x7fc76ec32e57]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(rb_ary_each+0x46) 
[0x7fc76eae6816]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x17afa6) 
[0x7fc76ec31fa6]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x1710ee) 
[0x7fc76ec280ee]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x176f5b) 
[0x7fc76ec2df5b]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(rb_iseq_eval+0x1f0) 
[0x7fc76ec33340]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x6a0d0) 
[0x7fc76eb210d0]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(rb_require_safe+0x6cf) 
[0x7fc76eb225cf]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x17afa6) 
[0x7fc76ec31fa6]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x1710ee) 
[0x7fc76ec280ee]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x176f5b) 
[0x7fc76ec2df5b]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(rb_yield+0x47) 
[0x7fc76ec32e57]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(rb_ary_each+0x46) 
[0x7fc76eae6816]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x17afa6) 
[0x7fc76ec31fa6]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x1710ee) 
[0x7fc76ec280ee]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x176f5b) 
[0x7fc76ec2df5b]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(rb_iseq_eval_main+0xb1) 
[0x7fc76ec33441]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x66a1a) 
[0x7fc76eb1da1a]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(ruby_exec_node+0x1d) 
[0x7fc76eb1e88d]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(ruby_run_node+0x1e) 
[0x7fc76eb20afe]
ruby(main+0x4b) [0x40091b]
/lib64/libc.so.6(__libc_start_main+0xfd) [0x3284c1ee5d]
ruby() [0x400809]

[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

Issue #5990 has been updated by mame (Yusuke Endoh).

Status changed from Feedback to Assigned
Assignee set to tenderlovemaking (Aaron Patterson)

Aaron, do you know anything?

--
Yusuke Endoh <mame@tsg.ne.jp>
----------------------------------------
Bug #5990: Random Segmentation Fault when running on Linux Fedora
https://bugs.ruby-lang.org/issues/5990#change-32091

Author: blairsilverberg (Blair Silverberg)
Status: Assigned
Priority: Normal
Assignee: tenderlovemaking (Aaron Patterson)
Category:
Target version:
ruby -v: 1.9.2p290


I am parsing a large library of html documents with ruby 
mechanize/nokogiri. Randomly, I encounter a segmentation fault.

This happens on both ruby 1.9.2 (ruby 1.9.2p290 (2011-07-09 revision 
32553) [x86_64-linux]) and 1.9.3 (ruby 1.9.3p0 (2011-10-30 revision 
33570) [x86_64-linux])

I am running Linux Fedora Laughlin 16 on rackspace

Linux 2.6.35.6-45.fc14.x86_64 #1 SMP Mon Oct 18 23:57:44 UTC 2010 x86_64 
x86_64 x86_64 GNU/Linux

Fedora release 14 (Laughlin)
Kernel \r on an \m (\l)



/root/code/myteam/classes/profile_page_scraper.rb:116: [BUG] 
Segmentation fault
ruby 1.9.2p290 (2011-07-09 revision 32553) [x86_64-linux]

-- control frame ----------
c:0022 p:0010 s:0088 b:0086 l:000085 d:000085 METHOD 
/root/code/myteam/classes/profile_page_scraper.rb:116
c:0021 p:0027 s:0082 b:0080 l:000079 d:000079 METHOD 
/root/code/myteam/classes/profile_page_scraper.rb:120
c:0020 p:0017 s:0076 b:0074 l:001ed8 d:000073 BLOCK 
/root/code/myteam/classes/mysite_scraper.rb:115
c:0019 p:0015 s:0069 b:0069 l:000059 d:000068 BLOCK 
/usr/local/rvm/gems/ruby-1.9.2-p290/gems/nokogiri-1.5.0/lib/nokogiri/xml/node_set.rb:239
c:0018 p:---- s:0066 b:0066 l:000065 d:000065 FINISH
c:0017 p:---- s:0064 b:0064 l:000063 d:000063 CFUNC  :upto
c:0016 p:0023 s:0060 b:0060 l:000059 d:000059 METHOD 
/usr/local/rvm/gems/ruby-1.9.2-p290/gems/nokogiri-1.5.0/lib/nokogiri/xml/node_set.rb:238
c:0015 p:0924 s:0056 b:0056 l:001ed8 d:001ed8 METHOD 
/root/code/myteam/classes/mysite_scraper.rb:113
c:0014 p:0032 s:0045 b:0045 l:000036 d:000044 BLOCK 
/root/code/myteam/scrape_user.rb:23
c:0013 p:---- s:0042 b:0042 l:000041 d:000041 FINISH
c:0012 p:---- s:0040 b:0040 l:000039 d:000039 CFUNC  :each
c:0011 p:0120 s:0037 b:0037 l:000036 d:000036 TOP 
/root/code/myteam/scrape_user.rb:21
c:0010 p:---- s:0034 b:0034 l:000033 d:000033 FINISH
c:0009 p:---- s:0032 b:0032 l:000031 d:000031 CFUNC  :require
c:0008 p:0036 s:0028 b:0028 l:000027 d:000027 METHOD 
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36
c:0007 p:0056 s:0021 b:0021 l:000012 d:000020 BLOCK 
/root/code/myteam/helpers/helpers.rb:7
c:0006 p:---- s:0018 b:0018 l:000017 d:000017 FINISH
c:0005 p:---- s:0016 b:0016 l:000015 d:000015 CFUNC  :each
c:0004 p:0066 s:0013 b:0013 l:000012 d:000012 METHOD 
/root/code/myteam/helpers/helpers.rb:5
c:0003 p:0050 s:0007 b:0007 l:0000b8 d:002340 EVAL   ./scrape_user.rb:6
c:0002 p:---- s:0004 b:0004 l:000003 d:000003 FINISH
c:0001 p:0000 s:0002 b:0002 l:0000b8 d:0000b8 TOP
---------------------------
-- Ruby level backtrace information 
----------------------------------------
./scrape_user.rb:6:in `<main>'
/root/code/myteam/helpers/helpers.rb:5:in `require_all'
/root/code/myteam/helpers/helpers.rb:5:in `each'
/root/code/myteam/helpers/helpers.rb:7:in `block in require_all'
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in 
`require'
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in 
`require'
/root/code/myteam/scrape_user.rb:21:in `<top (required)>'
/root/code/myteam/scrape_user.rb:21:in `each'
/root/code/myteam/scrape_user.rb:23:in `block in <top (required)>'
/root/code/myteam/classes/mysite_scraper.rb:113:in `scrape_user'
/usr/local/rvm/gems/ruby-1.9.2-p290/gems/nokogiri-1.5.0/lib/nokogiri/xml/node_set.rb:238:in 
`each'
/usr/local/rvm/gems/ruby-1.9.2-p290/gems/nokogiri-1.5.0/lib/nokogiri/xml/node_set.rb:238:in 
`upto'
/usr/local/rvm/gems/ruby-1.9.2-p290/gems/nokogiri-1.5.0/lib/nokogiri/xml/node_set.rb:239:in 
`block in each'
/root/code/myteam/classes/mysite_scraper.rb:115:in `block in 
scrape_user'
/root/code/myteam/classes/profile_page_scraper.rb:120:in `get_my_url'
/root/code/myteam/classes/profile_page_scraper.rb:116:in `get_my_id'

-- C level backtrace information 
-------------------------------------------
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(rb_vm_bugreport+0x5f) 
[0x7fc76ec380cf]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x60564) 
[0x7fc76eb17564]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(rb_bug+0xb3) 
[0x7fc76eb18493]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x1143b5) 
[0x7fc76ebcb3b5]
/lib64/libpthread.so.0() [0x328540eeb0]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(rb_method_entry_get_without_cache+0x20) 
[0x7fc76ec25750]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x176965) 
[0x7fc76ec2d965]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x176f5b) 
[0x7fc76ec2df5b]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(rb_yield+0x47) 
[0x7fc76ec32e57]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0xaa161) 
[0x7fc76eb61161]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x17afa6) 
[0x7fc76ec31fa6]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x1710ee) 
[0x7fc76ec280ee]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x176f5b) 
[0x7fc76ec2df5b]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(rb_yield+0x47) 
[0x7fc76ec32e57]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(rb_ary_each+0x46) 
[0x7fc76eae6816]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x17afa6) 
[0x7fc76ec31fa6]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x1710ee) 
[0x7fc76ec280ee]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x176f5b) 
[0x7fc76ec2df5b]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(rb_iseq_eval+0x1f0) 
[0x7fc76ec33340]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x6a0d0) 
[0x7fc76eb210d0]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(rb_require_safe+0x6cf) 
[0x7fc76eb225cf]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x17afa6) 
[0x7fc76ec31fa6]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x1710ee) 
[0x7fc76ec280ee]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x176f5b) 
[0x7fc76ec2df5b]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(rb_yield+0x47) 
[0x7fc76ec32e57]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(rb_ary_each+0x46) 
[0x7fc76eae6816]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x17afa6) 
[0x7fc76ec31fa6]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x1710ee) 
[0x7fc76ec280ee]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x176f5b) 
[0x7fc76ec2df5b]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(rb_iseq_eval_main+0xb1) 
[0x7fc76ec33441]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x66a1a) 
[0x7fc76eb1da1a]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(ruby_exec_node+0x1d) 
[0x7fc76eb1e88d]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(ruby_run_node+0x1e) 
[0x7fc76eb20afe]
ruby(main+0x4b) [0x40091b]
/lib64/libc.so.6(__libc_start_main+0xfd) [0x3284c1ee5d]
ruby() [0x400809]

[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

Issue #5990 has been updated by tenderlovemaking (Aaron Patterson).

Status changed from Assigned to Feedback

This is either a GC bug or a bug in Nokogiri.  nari-san fixed GC bugs 
for us, but I'm not sure what patch level.  Blair, can you try this with 
the latest 1.9.3 patch level?  If there is still a problem on 1.9.3, 
then it's probably a bug in Nokogiri.
----------------------------------------
Bug #5990: Random Segmentation Fault when running on Linux Fedora
https://bugs.ruby-lang.org/issues/5990#change-32194

Author: blairsilverberg (Blair Silverberg)
Status: Feedback
Priority: Normal
Assignee: tenderlovemaking (Aaron Patterson)
Category:
Target version:
ruby -v: 1.9.2p290


I am parsing a large library of html documents with ruby 
mechanize/nokogiri. Randomly, I encounter a segmentation fault.

This happens on both ruby 1.9.2 (ruby 1.9.2p290 (2011-07-09 revision 
32553) [x86_64-linux]) and 1.9.3 (ruby 1.9.3p0 (2011-10-30 revision 
33570) [x86_64-linux])

I am running Linux Fedora Laughlin 16 on rackspace

Linux 2.6.35.6-45.fc14.x86_64 #1 SMP Mon Oct 18 23:57:44 UTC 2010 x86_64 
x86_64 x86_64 GNU/Linux

Fedora release 14 (Laughlin)
Kernel \r on an \m (\l)



/root/code/myteam/classes/profile_page_scraper.rb:116: [BUG] 
Segmentation fault
ruby 1.9.2p290 (2011-07-09 revision 32553) [x86_64-linux]

-- control frame ----------
c:0022 p:0010 s:0088 b:0086 l:000085 d:000085 METHOD 
/root/code/myteam/classes/profile_page_scraper.rb:116
c:0021 p:0027 s:0082 b:0080 l:000079 d:000079 METHOD 
/root/code/myteam/classes/profile_page_scraper.rb:120
c:0020 p:0017 s:0076 b:0074 l:001ed8 d:000073 BLOCK 
/root/code/myteam/classes/mysite_scraper.rb:115
c:0019 p:0015 s:0069 b:0069 l:000059 d:000068 BLOCK 
/usr/local/rvm/gems/ruby-1.9.2-p290/gems/nokogiri-1.5.0/lib/nokogiri/xml/node_set.rb:239
c:0018 p:---- s:0066 b:0066 l:000065 d:000065 FINISH
c:0017 p:---- s:0064 b:0064 l:000063 d:000063 CFUNC  :upto
c:0016 p:0023 s:0060 b:0060 l:000059 d:000059 METHOD 
/usr/local/rvm/gems/ruby-1.9.2-p290/gems/nokogiri-1.5.0/lib/nokogiri/xml/node_set.rb:238
c:0015 p:0924 s:0056 b:0056 l:001ed8 d:001ed8 METHOD 
/root/code/myteam/classes/mysite_scraper.rb:113
c:0014 p:0032 s:0045 b:0045 l:000036 d:000044 BLOCK 
/root/code/myteam/scrape_user.rb:23
c:0013 p:---- s:0042 b:0042 l:000041 d:000041 FINISH
c:0012 p:---- s:0040 b:0040 l:000039 d:000039 CFUNC  :each
c:0011 p:0120 s:0037 b:0037 l:000036 d:000036 TOP 
/root/code/myteam/scrape_user.rb:21
c:0010 p:---- s:0034 b:0034 l:000033 d:000033 FINISH
c:0009 p:---- s:0032 b:0032 l:000031 d:000031 CFUNC  :require
c:0008 p:0036 s:0028 b:0028 l:000027 d:000027 METHOD 
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36
c:0007 p:0056 s:0021 b:0021 l:000012 d:000020 BLOCK 
/root/code/myteam/helpers/helpers.rb:7
c:0006 p:---- s:0018 b:0018 l:000017 d:000017 FINISH
c:0005 p:---- s:0016 b:0016 l:000015 d:000015 CFUNC  :each
c:0004 p:0066 s:0013 b:0013 l:000012 d:000012 METHOD 
/root/code/myteam/helpers/helpers.rb:5
c:0003 p:0050 s:0007 b:0007 l:0000b8 d:002340 EVAL   ./scrape_user.rb:6
c:0002 p:---- s:0004 b:0004 l:000003 d:000003 FINISH
c:0001 p:0000 s:0002 b:0002 l:0000b8 d:0000b8 TOP
---------------------------
-- Ruby level backtrace information 
----------------------------------------
./scrape_user.rb:6:in `<main>'
/root/code/myteam/helpers/helpers.rb:5:in `require_all'
/root/code/myteam/helpers/helpers.rb:5:in `each'
/root/code/myteam/helpers/helpers.rb:7:in `block in require_all'
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in 
`require'
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in 
`require'
/root/code/myteam/scrape_user.rb:21:in `<top (required)>'
/root/code/myteam/scrape_user.rb:21:in `each'
/root/code/myteam/scrape_user.rb:23:in `block in <top (required)>'
/root/code/myteam/classes/mysite_scraper.rb:113:in `scrape_user'
/usr/local/rvm/gems/ruby-1.9.2-p290/gems/nokogiri-1.5.0/lib/nokogiri/xml/node_set.rb:238:in 
`each'
/usr/local/rvm/gems/ruby-1.9.2-p290/gems/nokogiri-1.5.0/lib/nokogiri/xml/node_set.rb:238:in 
`upto'
/usr/local/rvm/gems/ruby-1.9.2-p290/gems/nokogiri-1.5.0/lib/nokogiri/xml/node_set.rb:239:in 
`block in each'
/root/code/myteam/classes/mysite_scraper.rb:115:in `block in 
scrape_user'
/root/code/myteam/classes/profile_page_scraper.rb:120:in `get_my_url'
/root/code/myteam/classes/profile_page_scraper.rb:116:in `get_my_id'

-- C level backtrace information 
-------------------------------------------
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(rb_vm_bugreport+0x5f) 
[0x7fc76ec380cf]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x60564) 
[0x7fc76eb17564]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(rb_bug+0xb3) 
[0x7fc76eb18493]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x1143b5) 
[0x7fc76ebcb3b5]
/lib64/libpthread.so.0() [0x328540eeb0]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(rb_method_entry_get_without_cache+0x20) 
[0x7fc76ec25750]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x176965) 
[0x7fc76ec2d965]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x176f5b) 
[0x7fc76ec2df5b]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(rb_yield+0x47) 
[0x7fc76ec32e57]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0xaa161) 
[0x7fc76eb61161]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x17afa6) 
[0x7fc76ec31fa6]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x1710ee) 
[0x7fc76ec280ee]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x176f5b) 
[0x7fc76ec2df5b]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(rb_yield+0x47) 
[0x7fc76ec32e57]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(rb_ary_each+0x46) 
[0x7fc76eae6816]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x17afa6) 
[0x7fc76ec31fa6]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x1710ee) 
[0x7fc76ec280ee]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x176f5b) 
[0x7fc76ec2df5b]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(rb_iseq_eval+0x1f0) 
[0x7fc76ec33340]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x6a0d0) 
[0x7fc76eb210d0]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(rb_require_safe+0x6cf) 
[0x7fc76eb225cf]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x17afa6) 
[0x7fc76ec31fa6]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x1710ee) 
[0x7fc76ec280ee]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x176f5b) 
[0x7fc76ec2df5b]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(rb_yield+0x47) 
[0x7fc76ec32e57]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(rb_ary_each+0x46) 
[0x7fc76eae6816]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x17afa6) 
[0x7fc76ec31fa6]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x1710ee) 
[0x7fc76ec280ee]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x176f5b) 
[0x7fc76ec2df5b]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(rb_iseq_eval_main+0xb1) 
[0x7fc76ec33441]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x66a1a) 
[0x7fc76eb1da1a]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(ruby_exec_node+0x1d) 
[0x7fc76eb1e88d]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(ruby_run_node+0x1e) 
[0x7fc76eb20afe]
ruby(main+0x4b) [0x40091b]
/lib64/libc.so.6(__libc_start_main+0xfd) [0x3284c1ee5d]
ruby() [0x400809]

[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

Issue #5990 has been updated by drbrain (Eric Hodel).

Status changed from Feedback to Third Party's Issue

Due to lack of feedback I'm marking this as third party issue. No 
mention of a bug in ruby has been made.
----------------------------------------
Bug #5990: Random Segmentation Fault when running on Linux Fedora
https://bugs.ruby-lang.org/issues/5990#change-35653

Author: blairsilverberg (Blair Silverberg)
Status: Third Party's Issue
Priority: Normal
Assignee: tenderlovemaking (Aaron Patterson)
Category:
Target version:
ruby -v: 1.9.2p290


I am parsing a large library of html documents with ruby 
mechanize/nokogiri. Randomly, I encounter a segmentation fault.

This happens on both ruby 1.9.2 (ruby 1.9.2p290 (2011-07-09 revision 
32553) [x86_64-linux]) and 1.9.3 (ruby 1.9.3p0 (2011-10-30 revision 
33570) [x86_64-linux])

I am running Linux Fedora Laughlin 16 on rackspace

Linux 2.6.35.6-45.fc14.x86_64 #1 SMP Mon Oct 18 23:57:44 UTC 2010 x86_64 
x86_64 x86_64 GNU/Linux

Fedora release 14 (Laughlin)
Kernel \r on an \m (\l)



/root/code/myteam/classes/profile_page_scraper.rb:116: [BUG] 
Segmentation fault
ruby 1.9.2p290 (2011-07-09 revision 32553) [x86_64-linux]

-- control frame ----------
c:0022 p:0010 s:0088 b:0086 l:000085 d:000085 METHOD 
/root/code/myteam/classes/profile_page_scraper.rb:116
c:0021 p:0027 s:0082 b:0080 l:000079 d:000079 METHOD 
/root/code/myteam/classes/profile_page_scraper.rb:120
c:0020 p:0017 s:0076 b:0074 l:001ed8 d:000073 BLOCK 
/root/code/myteam/classes/mysite_scraper.rb:115
c:0019 p:0015 s:0069 b:0069 l:000059 d:000068 BLOCK 
/usr/local/rvm/gems/ruby-1.9.2-p290/gems/nokogiri-1.5.0/lib/nokogiri/xml/node_set.rb:239
c:0018 p:---- s:0066 b:0066 l:000065 d:000065 FINISH
c:0017 p:---- s:0064 b:0064 l:000063 d:000063 CFUNC  :upto
c:0016 p:0023 s:0060 b:0060 l:000059 d:000059 METHOD 
/usr/local/rvm/gems/ruby-1.9.2-p290/gems/nokogiri-1.5.0/lib/nokogiri/xml/node_set.rb:238
c:0015 p:0924 s:0056 b:0056 l:001ed8 d:001ed8 METHOD 
/root/code/myteam/classes/mysite_scraper.rb:113
c:0014 p:0032 s:0045 b:0045 l:000036 d:000044 BLOCK 
/root/code/myteam/scrape_user.rb:23
c:0013 p:---- s:0042 b:0042 l:000041 d:000041 FINISH
c:0012 p:---- s:0040 b:0040 l:000039 d:000039 CFUNC  :each
c:0011 p:0120 s:0037 b:0037 l:000036 d:000036 TOP 
/root/code/myteam/scrape_user.rb:21
c:0010 p:---- s:0034 b:0034 l:000033 d:000033 FINISH
c:0009 p:---- s:0032 b:0032 l:000031 d:000031 CFUNC  :require
c:0008 p:0036 s:0028 b:0028 l:000027 d:000027 METHOD 
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36
c:0007 p:0056 s:0021 b:0021 l:000012 d:000020 BLOCK 
/root/code/myteam/helpers/helpers.rb:7
c:0006 p:---- s:0018 b:0018 l:000017 d:000017 FINISH
c:0005 p:---- s:0016 b:0016 l:000015 d:000015 CFUNC  :each
c:0004 p:0066 s:0013 b:0013 l:000012 d:000012 METHOD 
/root/code/myteam/helpers/helpers.rb:5
c:0003 p:0050 s:0007 b:0007 l:0000b8 d:002340 EVAL   ./scrape_user.rb:6
c:0002 p:---- s:0004 b:0004 l:000003 d:000003 FINISH
c:0001 p:0000 s:0002 b:0002 l:0000b8 d:0000b8 TOP
---------------------------
-- Ruby level backtrace information 
----------------------------------------
./scrape_user.rb:6:in `<main>'
/root/code/myteam/helpers/helpers.rb:5:in `require_all'
/root/code/myteam/helpers/helpers.rb:5:in `each'
/root/code/myteam/helpers/helpers.rb:7:in `block in require_all'
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in 
`require'
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in 
`require'
/root/code/myteam/scrape_user.rb:21:in `<top (required)>'
/root/code/myteam/scrape_user.rb:21:in `each'
/root/code/myteam/scrape_user.rb:23:in `block in <top (required)>'
/root/code/myteam/classes/mysite_scraper.rb:113:in `scrape_user'
/usr/local/rvm/gems/ruby-1.9.2-p290/gems/nokogiri-1.5.0/lib/nokogiri/xml/node_set.rb:238:in 
`each'
/usr/local/rvm/gems/ruby-1.9.2-p290/gems/nokogiri-1.5.0/lib/nokogiri/xml/node_set.rb:238:in 
`upto'
/usr/local/rvm/gems/ruby-1.9.2-p290/gems/nokogiri-1.5.0/lib/nokogiri/xml/node_set.rb:239:in 
`block in each'
/root/code/myteam/classes/mysite_scraper.rb:115:in `block in 
scrape_user'
/root/code/myteam/classes/profile_page_scraper.rb:120:in `get_my_url'
/root/code/myteam/classes/profile_page_scraper.rb:116:in `get_my_id'

-- C level backtrace information 
-------------------------------------------
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(rb_vm_bugreport+0x5f) 
[0x7fc76ec380cf]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x60564) 
[0x7fc76eb17564]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(rb_bug+0xb3) 
[0x7fc76eb18493]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x1143b5) 
[0x7fc76ebcb3b5]
/lib64/libpthread.so.0() [0x328540eeb0]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(rb_method_entry_get_without_cache+0x20) 
[0x7fc76ec25750]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x176965) 
[0x7fc76ec2d965]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x176f5b) 
[0x7fc76ec2df5b]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(rb_yield+0x47) 
[0x7fc76ec32e57]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0xaa161) 
[0x7fc76eb61161]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x17afa6) 
[0x7fc76ec31fa6]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x1710ee) 
[0x7fc76ec280ee]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x176f5b) 
[0x7fc76ec2df5b]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(rb_yield+0x47) 
[0x7fc76ec32e57]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(rb_ary_each+0x46) 
[0x7fc76eae6816]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x17afa6) 
[0x7fc76ec31fa6]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x1710ee) 
[0x7fc76ec280ee]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x176f5b) 
[0x7fc76ec2df5b]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(rb_iseq_eval+0x1f0) 
[0x7fc76ec33340]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x6a0d0) 
[0x7fc76eb210d0]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(rb_require_safe+0x6cf) 
[0x7fc76eb225cf]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x17afa6) 
[0x7fc76ec31fa6]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x1710ee) 
[0x7fc76ec280ee]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x176f5b) 
[0x7fc76ec2df5b]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(rb_yield+0x47) 
[0x7fc76ec32e57]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(rb_ary_each+0x46) 
[0x7fc76eae6816]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x17afa6) 
[0x7fc76ec31fa6]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x1710ee) 
[0x7fc76ec280ee]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x176f5b) 
[0x7fc76ec2df5b]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(rb_iseq_eval_main+0xb1) 
[0x7fc76ec33441]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(+0x66a1a) 
[0x7fc76eb1da1a]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(ruby_exec_node+0x1d) 
[0x7fc76eb1e88d]
/usr/local/rvm/rubies/ruby-1.9.2-p290/lib/libruby.so.1.9(ruby_run_node+0x1e) 
[0x7fc76eb20afe]
ruby(main+0x4b) [0x40091b]
/lib64/libc.so.6(__libc_start_main+0xfd) [0x3284c1ee5d]
ruby() [0x400809]

[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