帮助！在测试快结束时几乎总是运行测试时出现“分段错误”

Question

每当我运行“rake spec”时，我有 70-80% 的机会在 Ruby 中遇到 SEGMENTATION_FAULT。它通常发生在 2 个堆栈跟踪中：一个与 Factory_Girl 相关，另一个与 ActiveRecord 相关。这确实很奇怪。我不知道该怎么办。这是我运行所有测试时的输出：

/usr/local/lib/ruby/gems/1.9.1/gems/activerecord-3.0.7/lib/active_record/persistence.rb:285: [BUG] Segmentation fault
ruby 1.9.2p180 (2011-02-18 revision 30909) [x86_64-linux]

-- control frame ----------
c:0048 p:0026 s:0171 b:0171 l:000156 d:000170 BLOCK  /usr/local/lib/ruby/gems/1.9.1/gems/activerecord-3.0.7/lib/active_record/persistence.rb:285
c:0047 p:---- s:0167 b:0167 l:000166 d:000166 FINISH
c:0046 p:---- s:0165 b:0165 l:000160 d:000164 IFUNC 
c:0045 p:---- s:0163 b:0163 l:000162 d:000162 CFUNC  :each
c:0044 p:---- s:0161 b:0161 l:000160 d:000160 CFUNC  :inject
c:0043 p:0025 s:0157 b:0157 l:000156 d:000156 METHOD /usr/local/lib/ruby/gems/1.9.1/gems/activerecord-3.0.7/lib/active_record/persistence.rb:284
c:0042 p:0010 s:0154 b:0154 l:000153 d:000153 METHOD /usr/local/lib/ruby/gems/1.9.1/gems/activerecord-3.0.7/lib/active_record/locking/optimistic.rb:62
c:0041 p:0014 s:0150 b:0150 l:000149 d:000149 METHOD /usr/local/lib/ruby/gems/1.9.1/gems/activerecord-3.0.7/lib/active_record/base.rb:1395
c:0040 p:---- s:0145 b:0145 l:000144 d:000144 FINISH
c:0039 p:---- s:0143 b:0143 l:000142 d:000142 CFUNC  :new
c:0038 p:0012 s:0140 b:0140 l:000139 d:000139 METHOD /usr/local/lib/ruby/gems/1.9.1/gems/factory_girl-1.3.3/lib/factory_girl/proxy/build.rb:5
c:0037 p:---- s:0136 b:0136 l:000135 d:000135 FINISH
c:0036 p:---- s:0134 b:0134 l:000133 d:000133 CFUNC  :new
c:0035 p:0019 s:0130 b:0130 l:000129 d:000129 METHOD /usr/local/lib/ruby/gems/1.9.1/gems/factory_girl-1.3.3/lib/factory_girl/factory.rb:321
c:0034 p:0034 s:0123 b:0123 l:000122 d:000122 METHOD /usr/local/lib/ruby/gems/1.9.1/gems/factory_girl-1.3.3/lib/factory_girl/factory.rb:273
c:0033 p:0076 s:0118 b:0118 l:002488 d:000117 BLOCK  /home/egervari/websites/training/spec/queries/company_user_query_spec.rb:8
c:0032 p:---- s:0116 b:0116 l:000115 d:000115 FINISH
c:0031 p:---- s:0114 b:0114 l:000113 d:000113 CFUNC  :instance_eval
c:0030 p:0019 s:0111 b:0111 l:000110 d:000110 METHOD /usr/local/lib/ruby/gems/1.9.1/gems/rspec-core-2.6.3/lib/rspec/core/hooks.rb:32
c:0029 p:0014 s:0107 b:0107 l:000098 d:000106 BLOCK  /usr/local/lib/ruby/gems/1.9.1/gems/rspec-core-2.6.3/lib/rspec/core/hooks.rb:69
c:0028 p:---- s:0104 b:0104 l:000103 d:000103 FINISH
c:0027 p:---- s:0102 b:0102 l:000101 d:000101 CFUNC  :each
c:0026 p:0025 s:0099 b:0099 l:000098 d:000098 METHOD /usr/local/lib/ruby/gems/1.9.1/gems/rspec-core-2.6.3/lib/rspec/core/hooks.rb:69
c:0025 p:0030 s:0095 b:0095 l:000094 d:000094 METHOD /usr/local/lib/ruby/gems/1.9.1/gems/rspec-core-2.6.3/lib/rspec/core/hooks.rb:115
c:0024 p:0024 s:0089 b:0089 l:000080 d:000088 BLOCK  /usr/local/lib/ruby/gems/1.9.1/gems/rspec-core-2.6.3/lib/rspec/core/example_group.rb:221
c:0023 p:---- s:0086 b:0086 l:000085 d:000085 FINISH
c:0022 p:---- s:0084 b:0084 l:000083 d:000083 CFUNC  :each
c:0021 p:0054 s:0081 b:0081 l:000080 d:000080 METHOD /usr/local/lib/ruby/gems/1.9.1/gems/rspec-core-2.6.3/lib/rspec/core/example_group.rb:221
c:0020 p:0039 s:0077 b:0077 l:000076 d:000076 METHOD /usr/local/lib/ruby/gems/1.9.1/gems/rspec-core-2.6.3/lib/rspec/core/example.rb:145
c:0019 p:0011 s:0074 b:0074 l:001e60 d:000073 BLOCK  /usr/local/lib/ruby/gems/1.9.1/gems/rspec-core-2.6.3/lib/rspec/core/example.rb:47
c:0018 p:0024 s:0071 b:0071 l:000070 d:000070 METHOD /usr/local/lib/ruby/gems/1.9.1/gems/rspec-core-2.6.3/lib/rspec/core/example.rb:107
c:0017 p:0059 s:0067 b:0067 l:001e60 d:001e60 METHOD /usr/local/lib/ruby/gems/1.9.1/gems/rspec-core-2.6.3/lib/rspec/core/example.rb:45
c:0016 p:0071 s:0061 b:0061 l:000050 d:000060 BLOCK  /usr/local/lib/ruby/gems/1.9.1/gems/rspec-core-2.6.3/lib/rspec/core/example_group.rb:294
c:0015 p:---- s:0056 b:0056 l:000055 d:000055 FINISH
c:0014 p:---- s:0054 b:0054 l:000053 d:000053 CFUNC  :map
c:0013 p:0017 s:0051 b:0051 l:000050 d:000050 METHOD /usr/local/lib/ruby/gems/1.9.1/gems/rspec-core-2.6.3/lib/rspec/core/example_group.rb:290
c:0012 p:0096 s:0047 b:0047 l:000046 d:000046 METHOD /usr/local/lib/ruby/gems/1.9.1/gems/rspec-core-2.6.3/lib/rspec/core/example_group.rb:262
c:0011 p:0014 s:0040 b:0040 l:000024 d:000039 BLOCK  /usr/local/lib/ruby/gems/1.9.1/gems/rspec-core-2.6.3/lib/rspec/core/command_line.rb:24
c:0010 p:---- s:0037 b:0037 l:000036 d:000036 FINISH
c:0009 p:---- s:0035 b:0035 l:000034 d:000034 CFUNC  :map
c:0008 p:0035 s:0032 b:0032 l:000024 d:000031 BLOCK  /usr/local/lib/ruby/gems/1.9.1/gems/rspec-core-2.6.3/lib/rspec/core/command_line.rb:24
c:0007 p:0022 s:0029 b:0029 l:000028 d:000028 METHOD /usr/local/lib/ruby/gems/1.9.1/gems/rspec-core-2.6.3/lib/rspec/core/reporter.rb:12
c:0006 p:0113 s:0025 b:0025 l:000024 d:000024 METHOD /usr/local/lib/ruby/gems/1.9.1/gems/rspec-core-2.6.3/lib/rspec/core/command_line.rb:21
c:0005 p:0055 s:0020 b:0020 l:000019 d:000019 METHOD /usr/local/lib/ruby/gems/1.9.1/gems/rspec-core-2.6.3/lib/rspec/core/runner.rb:80
c:0004 p:0101 s:0014 b:0014 l:000013 d:000013 METHOD /usr/local/lib/ruby/gems/1.9.1/gems/rspec-core-2.6.3/lib/rspec/core/runner.rb:69
c:0003 p:0021 s:0007 b:0006 l:0015e8 d:000005 BLOCK  /usr/local/lib/ruby/gems/1.9.1/gems/rspec-core-2.6.3/lib/rspec/core/runner.rb:11
c:0002 p:---- s:0004 b:0004 l:000003 d:000003 FINISH
c:0001 p:0000 s:0002 b:0002 l:000118 d:000118 TOP   
---------------------------
-- Ruby level backtrace information ----------------------------------------
/usr/local/lib/ruby/gems/1.9.1/gems/rspec-core-2.6.3/lib/rspec/core/runner.rb:11:in `block in autorun'
/usr/local/lib/ruby/gems/1.9.1/gems/rspec-core-2.6.3/lib/rspec/core/runner.rb:69:in `run'
/usr/local/lib/ruby/gems/1.9.1/gems/rspec-core-2.6.3/lib/rspec/core/runner.rb:80:in `run_in_process'
/usr/local/lib/ruby/gems/1.9.1/gems/rspec-core-2.6.3/lib/rspec/core/command_line.rb:21:in `run'
/usr/local/lib/ruby/gems/1.9.1/gems/rspec-core-2.6.3/lib/rspec/core/reporter.rb:12:in `report'
/usr/local/lib/ruby/gems/1.9.1/gems/rspec-core-2.6.3/lib/rspec/core/command_line.rb:24:in `block in run'
/usr/local/lib/ruby/gems/1.9.1/gems/rspec-core-2.6.3/lib/rspec/core/command_line.rb:24:in `map'
/usr/local/lib/ruby/gems/1.9.1/gems/rspec-core-2.6.3/lib/rspec/core/command_line.rb:24:in `block (2 levels) in run'
/usr/local/lib/ruby/gems/1.9.1/gems/rspec-core-2.6.3/lib/rspec/core/example_group.rb:262:in `run'
/usr/local/lib/ruby/gems/1.9.1/gems/rspec-core-2.6.3/lib/rspec/core/example_group.rb:290:in `run_examples'
/usr/local/lib/ruby/gems/1.9.1/gems/rspec-core-2.6.3/lib/rspec/core/example_group.rb:290:in `map'
/usr/local/lib/ruby/gems/1.9.1/gems/rspec-core-2.6.3/lib/rspec/core/example_group.rb:294:in `block in run_examples'
/usr/local/lib/ruby/gems/1.9.1/gems/rspec-core-2.6.3/lib/rspec/core/example.rb:45:in `run'
/usr/local/lib/ruby/gems/1.9.1/gems/rspec-core-2.6.3/lib/rspec/core/example.rb:107:in `with_around_hooks'
/usr/local/lib/ruby/gems/1.9.1/gems/rspec-core-2.6.3/lib/rspec/core/example.rb:47:in `block in run'
/usr/local/lib/ruby/gems/1.9.1/gems/rspec-core-2.6.3/lib/rspec/core/example.rb:145:in `run_before_each'
/usr/local/lib/ruby/gems/1.9.1/gems/rspec-core-2.6.3/lib/rspec/core/example_group.rb:221:in `eval_before_eachs'
/usr/local/lib/ruby/gems/1.9.1/gems/rspec-core-2.6.3/lib/rspec/core/example_group.rb:221:in `each'
/usr/local/lib/ruby/gems/1.9.1/gems/rspec-core-2.6.3/lib/rspec/core/example_group.rb:221:in `block in eval_before_eachs'
/usr/local/lib/ruby/gems/1.9.1/gems/rspec-core-2.6.3/lib/rspec/core/hooks.rb:115:in `run_hook'
/usr/local/lib/ruby/gems/1.9.1/gems/rspec-core-2.6.3/lib/rspec/core/hooks.rb:69:in `run_all'
/usr/local/lib/ruby/gems/1.9.1/gems/rspec-core-2.6.3/lib/rspec/core/hooks.rb:69:in `each'
/usr/local/lib/ruby/gems/1.9.1/gems/rspec-core-2.6.3/lib/rspec/core/hooks.rb:69:in `block in run_all'
/usr/local/lib/ruby/gems/1.9.1/gems/rspec-core-2.6.3/lib/rspec/core/hooks.rb:32:in `run_in'
/usr/local/lib/ruby/gems/1.9.1/gems/rspec-core-2.6.3/lib/rspec/core/hooks.rb:32:in `instance_eval'
/home/egervari/websites/training/spec/queries/company_user_query_spec.rb:8:in `block (2 levels) in <top (required)>'
/usr/local/lib/ruby/gems/1.9.1/gems/factory_girl-1.3.3/lib/factory_girl/factory.rb:273:in `create'
/usr/local/lib/ruby/gems/1.9.1/gems/factory_girl-1.3.3/lib/factory_girl/factory.rb:321:in `run'
/usr/local/lib/ruby/gems/1.9.1/gems/factory_girl-1.3.3/lib/factory_girl/factory.rb:321:in `new'
/usr/local/lib/ruby/gems/1.9.1/gems/factory_girl-1.3.3/lib/factory_girl/proxy/build.rb:5:in `initialize'
/usr/local/lib/ruby/gems/1.9.1/gems/factory_girl-1.3.3/lib/factory_girl/proxy/build.rb:5:in `new'
/usr/local/lib/ruby/gems/1.9.1/gems/activerecord-3.0.7/lib/active_record/base.rb:1395:in `initialize'
/usr/local/lib/ruby/gems/1.9.1/gems/activerecord-3.0.7/lib/active_record/locking/optimistic.rb:62:in `attributes_from_column_definition'
/usr/local/lib/ruby/gems/1.9.1/gems/activerecord-3.0.7/lib/active_record/persistence.rb:284:in `attributes_from_column_definition'
/usr/local/lib/ruby/gems/1.9.1/gems/activerecord-3.0.7/lib/active_record/persistence.rb:284:in `inject'
/usr/local/lib/ruby/gems/1.9.1/gems/activerecord-3.0.7/lib/active_record/persistence.rb:284:in `each'
/usr/local/lib/ruby/gems/1.9.1/gems/activerecord-3.0.7/lib/active_record/persistence.rb:285:in `block in attributes_from_column_definition'

rake aborted!

Answer 1

看起来像是 Ruby 本身的一个错误。我敢打赌，GC 会启动并清除一些它不应该清除的东西。尝试在开始的某个地方执行 GC.disable 。
现在，Ruby 1.9.2p204 有一些 GC 修复，这可能是相关的，所以如果确实是 GC 的错，那么将你的 Ruby 更新到（至少）p204，看看问题是否仍然存在。