[Bug 670571] Re: Segmentation fault in Marshal.load
Could this actually be http://rubyforge.org/tracker/?func=detailatid=1971aid=26863group_id=494? ** Bug watch added: rubyforge.org #26863 http://rubyforge.org/support/tracker.php?aid=26863 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/670571 Title: Segmentation fault in Marshal.load To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/rails/+bug/670571/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 670571] Re: Segmentation fault in Marshal.load
Mark, no problem, and no apologies required. Fundamentally, the problem is that we do not have a corresponding upstream commit that would fix the bug. In fact, it's not entirely clear whether the bug is fixed upstream or not. Without a good knowledge of the Ruby interpreter code base, it is close to impossible to figure out exactly what is going on. Also, from what I understand, Dave committed a fix in natty for the specific test-case we currently have (posted by Dan Van Derveer). Does that fix actually address the problem as you experience it? If so, then I guess it could be considered for lucid. If not, then we will need a more specific test-case. Dave, does the above make any sense to you? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/670571 Title: Segmentation fault in Marshal.load To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/rails/+bug/670571/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 670571] Re: Segmentation fault in Marshal.load
Hi again, just to make sure I understand, when you say we above, do you mean that is something that you (ubuntu) folks need to/are going to do, or that it is something that I need to do? If it's something that we (those affected by the issue) need to do, then I may be fundamentally misunderstanding the purpose of this bug. Should we be working directly with the ruby devs to get this fixed and then just use this space to point ubuntu folks to a patch number, or do you all do the sort of deeper analysis necessary for the above? Thanks, and sorry for my general lack of insight into how this process works. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/670571 Title: Segmentation fault in Marshal.load To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/rails/+bug/670571/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 670571] Re: Segmentation fault in Marshal.load
Indeed, the test-case is resolved in natty. That does not mean the underlying bug is fixed, though. Mark, we'll need to know whether the underlying bug is indeed fixed or not in upstream Ruby, and ideally figure which commit fixed it. Failing that, a better (more specific?) test-case that segfault deterministically would help, although it's not guaranteed. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/670571 Title: Segmentation fault in Marshal.load -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 670571] Re: Segmentation fault in Marshal.load
Hi Etienne. I'm not sure that we have any more info here, what else would you like us to provide? I'll do what I can, but we had hoped that providing a testcase that triggers the bug would be sufficient... -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/670571 Title: Segmentation fault in Marshal.load -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 670571] Re: Segmentation fault in Marshal.load
Can someone actually affected by the bug provide us with some more insight? It would be good to fix the underlying segfault, but we would need to better understand what triggers it. Has it been fixed upstream at all? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/670571 Title: Segmentation fault in Marshal.load -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 670571] Re: Segmentation fault in Marshal.load
Etienne, it don't think the ruby upstream report In comment 8 is related. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/670571 Title: Segmentation fault in Marshal.load -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 670571] Re: Segmentation fault in Marshal.load
This bug was fixed in the package rails - 2.3.5-1.2ubuntu1 --- rails (2.3.5-1.2ubuntu1) natty; urgency=low * debian/patches/cdata-and-white-space-handling.patch: Handle CDATA and improve white space handling, fixing a Segmentation Fault in some circumstances. Patch based on subset of upstream commit range. (LP: #670571) -- Dave Walker (Daviey) davewal...@ubuntu.com Wed, 16 Mar 2011 01:03:12 + ** Changed in: rails (Ubuntu) Status: Confirmed = Fix Released -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/670571 Title: Segmentation fault in Marshal.load -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 670571] Re: Segmentation fault in Marshal.load
The specific test case seems to be resolved in Natty now.. however, whilst testing the patch, i discovered that the segmentation fault is non-deterministic - which is somewhat concerning. There could indeed be a deeper bug in ruby. Attaching a backtrace. Not sure if this is related, http://groups.google.com/group/emm- ruby/browse_thread/thread/950573fc9eb248ae ** Attachment added: gdb.txt https://bugs.launchpad.net/ubuntu/+source/ruby1.8/+bug/670571/+attachment/1911317/+files/gdb.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/670571 Title: Segmentation fault in Marshal.load -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 670571] Re: Segmentation fault in Marshal.load
Do we have confirmation that this is resolved in the Maverick version? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/670571 Title: Segmentation fault in Marshal.load -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 670571] Re: Segmentation fault in Marshal.load
Issue sounds like it is isolated to amd64, and not fixed yet. == Lucid (i386) == $ ./test.rb parsed 0 parsed 1 parsed 2 parsed 3 parsed 4 parsed 5 parsed 6 parsed 7 parsed 8 parsed 9 parsed 10 parsed 11 parsed 12 parsed 13 parsed 14 == Maverick (amd64) == $ ./test.rb DEPRECATION WARNING: require activesupport is deprecated and will be removed in Rails 3. Use require active_support instead.. (called from /usr/lib/ruby/1.8/activesupport.rb:2) parsed 0 parsed 1 parsed 2 parsed 3 /usr/lib/ruby/1.8/active_support/xml_mini/libxml.rb:125: [BUG] Segmentation fault ruby 1.8.7 (2010-06-23 patchlevel 299) [x86_64-linux] == Natty (amd64) == $ ./test.rb DEPRECATION WARNING: require activesupport is deprecated and will be removed in Rails 3. Use require active_support instead.. (called from /usr/lib/ruby/1.8/activesupport.rb:2) parsed 0 parsed 1 /usr/lib/ruby/1.8/active_support/xml_mini/libxml.rb:125: [BUG] Segmentation fault ruby 1.8.7 (2010-08-16 patchlevel 302) [x86_64-linux] Aborted (core dumped) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/670571 Title: Segmentation fault in Marshal.load -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 670571] Re: Segmentation fault in Marshal.load
** Changed in: ruby1.8 (Ubuntu) Assignee: (unassigned) = Dave Walker (davewalker) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/670571 Title: Segmentation fault in Marshal.load -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 670571] Re: Segmentation fault in Marshal.load
This seems to affect rails, not ruby. Updating as appropriate. ** Also affects: rails (Ubuntu) Importance: Undecided Status: New ** Changed in: ruby1.8 (Ubuntu) Status: Confirmed = Invalid ** Changed in: rails (Ubuntu) Status: New = Confirmed ** Changed in: ruby1.8 (Ubuntu) Importance: High = Undecided ** Changed in: rails (Ubuntu) Importance: Undecided = High ** Changed in: ruby1.8 (Ubuntu) Assignee: Dave Walker (davewalker) = (unassigned) ** Changed in: rails (Ubuntu) Assignee: (unassigned) = Dave Walker (davewalker) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/670571 Title: Segmentation fault in Marshal.load -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 670571] Re: Segmentation fault in Marshal.load
Dave is correct, maverick is also affected. Don't have a natty install nearby to test, so I am not sure. I thought the bug was specific to ruby 1.8.7 p249, per the linked upstream report. In comment 8, it's reported as fixed. I am not sure anymore whether it is fixed upstream or not. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/670571 Title: Segmentation fault in Marshal.load -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 670571] Re: Segmentation fault in Marshal.load
To test on plain lucid, you would need to: $ sudo apt-get install rails libxml-ruby $ gem install activesupport --version 2.3.2 And then run the above test-case. It reliably segfault for me, so marking confirmed. ** Changed in: ruby1.8 (Ubuntu) Status: Incomplete = Confirmed ** Changed in: ruby1.8 (Ubuntu) Importance: Undecided = High -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/670571 Title: Segmentation fault in Marshal.load -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 670571] Re: Segmentation fault in Marshal.load
Here is a test which consistently segfaults on my Lucid box. bug_test.tar.gz contains two files: testdata.xml - a ~1MB data file of XML test.rb - a script that opens and parses that data file several times to cause the crash Example run: $ ruby -v ruby 1.8.7 (2010-01-10 patchlevel 249) [x86_64-linux] $ ./test.rb parsed 0 parsed 1 parsed 2 /var/lib/gems/1.8/gems/activesupport-2.3.2/lib/active_support/xml_mini/libxml.rb:125: [BUG] Segmentation fault ruby 1.8.7 (2010-01-10 patchlevel 249) [x86_64-linux] Aborted ** Attachment added: Tarball of test script and supporting data file https://bugs.launchpad.net/ubuntu/+source/ruby1.8/+bug/670571/+attachment/1869547/+files/bug_test.tar.gz -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/670571 Title: Segmentation fault in Marshal.load -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 670571] Re: Segmentation fault in Marshal.load
Dan (or whoever else), can you provide a code snippet that triggers the bug on Ubuntu? I tried the example from the upstream bug, but it would not segfault. Here's my test case: ubuntu@lucid-server:~$ cat fault.rb #!/usr/bin/ruby require File.expand_path(/usr/share/rails/activesupport/lib/active_support/multibyte/unicode_database.rb, __FILE__) ActiveSupport::Multibyte::UnicodeDatabase.new.codepoints puts No crash ubuntu@lucid-server:~$ ./fault.rb No crash -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/670571 Title: Segmentation fault in Marshal.load -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 670571] Re: Segmentation fault in Marshal.load
** Changed in: ruby1.8 (Ubuntu) Status: New = Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/670571 Title: Segmentation fault in Marshal.load -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 670571] Re: Segmentation fault in Marshal.load
** Tags added: glucid lucid ruby -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/670571 Title: Segmentation fault in Marshal.load -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
