为什么Ruby只在我的系统上，而且只在这个Rails应用程序中抛出了一个分段错误？
为什么Ruby只在我的系统上，而且只在这个Rails应用程序中抛出了一个分段错误？
提问于 2010-01-22 03:53:58
我不太确定如何正确调试，但我尝试了几种不同的方法，这些方法耗费了我的时间，但没有解决问题。我办公室里至少有4个人可以在安装了相同版本的ruby和rubygems的相同机器上执行这段代码，没有错误。
下面是我正在执行的代码：
status = Open4::popen4( "swfmill simple stdin stdout" ) do | pid, stdin, stdout, stderr |
stdin.write( config )
stdin.close
bytes = stdout.read
errors = stderr.read
end我在这一行得到了一个“总线错误”：
errors = stderr.read如果我注释该行，我会在该行上得到一个"Segementation错误“：
bytes = stdout.read很明显，我正在使用Open4库并执行一个外部进程。当直接从终端执行这个外部进程时，或者当这个Ruby代码在这个特定的Rails应用程序之外运行时，即使是在一个不同的、更简单的Rails应用程序中，它也可以很好地工作。
要重现这个错误，我只需要执行我的特定测试方法，如下所示：
ruby test/unit/swf_generator_test.rb --name test_get_bytes我运行雪豹Mac OS X 10.6.2 (10C540)的MacBook专业版，英特尔酷睿2双核2.53 GHz和8 8GB的内存。
ruby -v && gem -v
ruby 1.8.7 (2009-06-12 patchlevel 174) [i686-darwin10.2.0]
1.3.5我在GDB中执行了这段代码，发现我的libxml和libxslt库都没有正确安装。我能够安装这两个库，而现在GDB不再告诉我任何我认为有帮助的信息。下面是GDB的当前输出：
gdb ruby
GNU gdb 6.3.50-20050815 (Apple version gdb-1344) (Fri Jul 3 01:19:56 UTC 2009)
Copyright 2004 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB. Type "show warranty" for details.
This GDB was configured as "x86_64-apple-darwin"...Reading symbols for shared libraries .... done
(gdb) run test/unit/swf_generator_test.rb --name test_get_bytes
Starting program: /usr/local/bin/ruby test/unit/swf_generator_test.rb --name test_get_bytes
Reading symbols for shared libraries +++... done
Reading symbols for shared libraries . done
Reading symbols for shared libraries . done
Reading symbols for shared libraries . done
Reading symbols for shared libraries . done
Reading symbols for shared libraries . done
Reading symbols for shared libraries . done
Reading symbols for shared libraries . done
Reading symbols for shared libraries . done
Reading symbols for shared libraries .. done
Reading symbols for shared libraries . done
Reading symbols for shared libraries . done
Reading symbols for shared libraries ... done
Reading symbols for shared libraries . done
Reading symbols for shared libraries . done
Reading symbols for shared libraries . done
Reading symbols for shared libraries .. done
Reading symbols for shared libraries . done
Reading symbols for shared libraries .. done
Reading symbols for shared libraries . done
Reading symbols for shared libraries . done
Reading symbols for shared libraries . done
Reading symbols for shared libraries .... done
Reading symbols for shared libraries . done
Reading symbols for shared libraries . done
Reading symbols for shared libraries ... done
Loaded suite test/unit/swf_generator_test
Started
Reading symbols for shared libraries .. done
Program received signal EXC_BAD_ACCESS, Could not access memory.
Reason: KERN_PROTECTION_FAILURE at address: 0x00007fff81973e90
0x0000000100045bf1 in gc_mark ()
(gdb) 在更新libxml和libxslt库之后，我还重新构建/重新安装了所有gem。我通过运行以下命令来完成此操作：
sudo gem pristine --all最后，下面是我针对此特定异常的控制台日志条目：
Process: ruby [5059]
Path: /usr/local/bin/ruby
Identifier: ruby
Version: ??? (???)
Code Type: X86-64 (Native)
Parent Process: bash [5050]
Date/Time: 2010-01-21 11:31:45.468 -0800
OS Version: Mac OS X 10.6.2 (10C540)
Report Version: 6
Exception Type: EXC_BAD_ACCESS (SIGABRT)
Exception Codes: KERN_INVALID_ADDRESS at 0x000000000000000e
Crashed Thread: 0 Dispatch queue: com.apple.main-thread
Application Specific Information:
abort() called
Thread 0 Crashed: Dispatch queue: com.apple.main-thread
0 libSystem.B.dylib 0x00007fff819befe6 __kill + 10
1 libSystem.B.dylib 0x00007fff81a5fe32 abort + 83
2 libruby.dylib 0x000000010001b887 rb_check_type + 0
3 libruby.dylib 0x00000001000a5427 sigsegv + 84
4 libSystem.B.dylib 0x00007fff819d0eaa _sigtramp + 26
5 ??? 0x00007fff5fbd7410 0 + 140734799639568
6 libruby.dylib 0x0000000100045a50 mark_tbl + 44
7 libruby.dylib 0x0000000100045a71 rb_mark_tbl + 31
8 libruby.dylib 0x0000000100059286 mark_load_arg + 40
9 libruby.dylib 0x000000010004635f gc_mark_children + 1687
10 libruby.dylib 0x0000000100045c74 gc_mark + 221
11 libruby.dylib 0x0000000100045882 mark_locations_array + 61
12 libruby.dylib 0x00000001000459fc rb_gc_mark_locations + 59
13 libruby.dylib 0x0000000100047620 garbage_collect + 389
14 libruby.dylib 0x0000000100044c2d ruby_xmalloc + 107
15 libruby.dylib 0x0000000100033a76 scope_dup + 100
16 libruby.dylib 0x000000010002ab7d rb_yield_0 + 2646
17 libruby.dylib 0x0000000100034dbd proc_invoke + 1020
18 libruby.dylib 0x0000000100034f73 rb_proc_call + 39
19 libruby.dylib 0x000000010002e061 call_cfunc + 252
20 libruby.dylib 0x000000010002d16a rb_call0 + 1548
21 libruby.dylib 0x000000010002ebca rb_call + 711
22 libruby.dylib 0x0000000100025dc4 rb_eval + 9919
23 libruby.dylib 0x00000001000251d0 rb_eval + 6859
24 libruby.dylib 0x000000010002dc1b rb_call0 + 4285
25 libruby.dylib 0x000000010002ebca rb_call + 711
26 libruby.dylib 0x0000000100025dc4 rb_eval + 9919
27 libruby.dylib 0x00000001000249fc rb_eval + 4855
28 libruby.dylib 0x000000010002716e rb_eval + 14953
29 libruby.dylib 0x000000010002a8f8 rb_yield_0 + 2001
30 libruby.dylib 0x0000000100034dbd proc_invoke + 1020
31 libruby.dylib 0x0000000100034f73 rb_proc_call + 39
32 libruby.dylib 0x000000010002e061 call_cfunc + 252
33 libruby.dylib 0x000000010002d16a rb_call0 + 1548
34 libruby.dylib 0x000000010002ebca rb_call + 711
35 libruby.dylib 0x0000000100025dc4 rb_eval + 9919
36 libruby.dylib 0x00000001000251d0 rb_eval + 6859
37 libruby.dylib 0x000000010002dc1b rb_call0 + 4285
38 libruby.dylib 0x000000010002ebca rb_call + 711
39 libruby.dylib 0x0000000100025dc4 rb_eval + 9919
40 libruby.dylib 0x00000001000249fc rb_eval + 4855
41 libruby.dylib 0x000000010002dc1b rb_call0 + 4285
42 libruby.dylib 0x000000010002ebca rb_call + 711
43 libruby.dylib 0x00000001000260fb rb_eval + 10742
44 libruby.dylib 0x0000000100025617 rb_eval + 7954
45 libruby.dylib 0x000000010002dc1b rb_call0 + 4285
46 libruby.dylib 0x000000010002ebca rb_call + 711
47 libruby.dylib 0x0000000100025dc4 rb_eval + 9919
48 libruby.dylib 0x00000001000270e5 rb_eval + 14816
49 libruby.dylib 0x000000010002dc1b rb_call0 + 4285
50 libruby.dylib 0x000000010002ebca rb_call + 711
51 libruby.dylib 0x000000010002ed88 rb_f_send + 170
52 libruby.dylib 0x000000010002e080 call_cfunc + 283
53 libruby.dylib 0x000000010002d16a rb_call0 + 1548
54 libruby.dylib 0x000000010002ebca rb_call + 711
55 libruby.dylib 0x00000001000260fb rb_eval + 10742
56 libruby.dylib 0x0000000100024f5a rb_eval + 6229
57 libruby.dylib 0x00000001000251d0 rb_eval + 6859
58 libruby.dylib 0x00000001000251d0 rb_eval + 6859
59 libruby.dylib 0x000000010002dc1b rb_call0 + 4285
60 libruby.dylib 0x000000010002ebca rb_call + 711
61 libruby.dylib 0x0000000100025dc4 rb_eval + 9919
62 libruby.dylib 0x0000000100035764 block_pass + 460
63 libruby.dylib 0x000000010002473a rb_eval + 4149
64 libruby.dylib 0x000000010002a8f8 rb_yield_0 + 2001
65 libruby.dylib 0x000000010002ad2f rb_yield + 42
66 libruby.dylib 0x00000001000061e4 rb_ary_each + 100
67 libruby.dylib 0x000000010002e098 call_cfunc + 307
68 libruby.dylib 0x000000010002d16a rb_call0 + 1548
69 libruby.dylib 0x000000010002ebca rb_call + 711
70 libruby.dylib 0x0000000100025dc4 rb_eval + 9919
71 libruby.dylib 0x00000001000249fc rb_eval + 4855
72 libruby.dylib 0x000000010002dc1b rb_call0 + 4285
73 libruby.dylib 0x000000010002ebca rb_call + 711
74 libruby.dylib 0x0000000100025dc4 rb_eval + 9919
75 libruby.dylib 0x0000000100035764 block_pass + 460
76 libruby.dylib 0x000000010002473a rb_eval + 4149
77 libruby.dylib 0x000000010002a8f8 rb_yield_0 + 2001
78 libruby.dylib 0x000000010002ad2f rb_yield + 42
79 libruby.dylib 0x00000001000061e4 rb_ary_each + 100
80 libruby.dylib 0x000000010002e098 call_cfunc + 307
81 libruby.dylib 0x000000010002d16a rb_call0 + 1548
82 libruby.dylib 0x000000010002ebca rb_call + 711
83 libruby.dylib 0x0000000100025dc4 rb_eval + 9919
84 libruby.dylib 0x00000001000249fc rb_eval + 4855
85 libruby.dylib 0x000000010002dc1b rb_call0 + 4285
86 libruby.dylib 0x000000010002ebca rb_call + 711
87 libruby.dylib 0x0000000100025dc4 rb_eval + 9919
88 libruby.dylib 0x00000001000249fc rb_eval + 4855
89 libruby.dylib 0x000000010002dc1b rb_call0 + 4285
90 libruby.dylib 0x000000010002ebca rb_call + 711
91 libruby.dylib 0x0000000100025dc4 rb_eval + 9919
92 libruby.dylib 0x0000000100025617 rb_eval + 7954
93 libruby.dylib 0x000000010002dc1b rb_call0 + 4285
94 libruby.dylib 0x000000010002ebca rb_call + 711
95 libruby.dylib 0x000000010002614c rb_eval + 10823
96 libruby.dylib 0x0000000100025617 rb_eval + 7954
97 libruby.dylib 0x000000010002dc1b rb_call0 + 4285
98 libruby.dylib 0x000000010002ebca rb_call + 711
99 libruby.dylib 0x0000000100025dc4 rb_eval + 9919
100 libruby.dylib 0x0000000100025617 rb_eval + 7954
101 libruby.dylib 0x000000010002dc1b rb_call0 + 4285
102 libruby.dylib 0x000000010002ebca rb_call + 711
103 libruby.dylib 0x0000000100025dc4 rb_eval + 9919
104 libruby.dylib 0x0000000100025b16 rb_eval + 9233
105 libruby.dylib 0x000000010002dc1b rb_call0 + 4285
106 libruby.dylib 0x000000010002ebca rb_call + 711
107 libruby.dylib 0x0000000100025dc4 rb_eval + 9919
108 libruby.dylib 0x000000010002dc1b rb_call0 + 4285
109 libruby.dylib 0x000000010002ebca rb_call + 711
110 libruby.dylib 0x0000000100025dc4 rb_eval + 9919
111 libruby.dylib 0x0000000100025f54 rb_eval + 10319
112 libruby.dylib 0x000000010002a8f8 rb_yield_0 + 2001
113 libruby.dylib 0x0000000100034dbd proc_invoke + 1020
114 libruby.dylib 0x0000000100032ba5 call_end_proc + 230
115 libruby.dylib 0x0000000100032eea rb_exec_end_proc + 559
116 libruby.dylib 0x000000010002051c ruby_finalize_0 + 170
117 libruby.dylib 0x00000001000205ab ruby_cleanup + 57
118 libruby.dylib 0x00000001000208c8 ruby_stop + 19
119 libruby.dylib 0x0000000100020937 compile_error + 0
120 ruby 0x0000000100000ebe dyld_stub_exit + 0
121 ruby 0x0000000100000e74 start + 52
Thread 0 crashed with X86 Thread State (64-bit):
rax: 0x0000000000000000 rbx: 0x00007fff5fbd7318 rcx: 0x00007fff5fbd6a68 rdx: 0x0000000000000000
rdi: 0x00000000000013c3 rsi: 0x0000000000000006 rbp: 0x00007fff5fbd6a80 rsp: 0x00007fff5fbd6a68
r8: 0x0000000000000002 r9: 0x0000000000000000 r10: 0x00007fff819bb026 r11: 0x0000000000000202
r12: 0x0000000000000000 r13: 0x0000000000000000 r14: 0x0000000000000000 r15: 0x0000000000000000
rip: 0x00007fff819befe6 rfl: 0x0000000000000202 cr2: 0x00007fff702e71f0
Binary Images:
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0x1001e1000 - 0x1001e4fff +thread.bundle ??? (???) <CB4AF257-267F-182F-66B6-8A56E01A3843> /usr/local/lib/ruby/1.8/i686-darwin10.0.0/thread.bundle
0x1001e8000 - 0x1001e9ff7 +etc.bundle ??? (???) <356F8541-C0F9-1A34-2C0A-A24035D55960> /usr/local/lib/ruby/1.8/i686-darwin10.0.0/etc.bundle
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0x1004fd000 - 0x1004fdfff +sha1.bundle ??? (???) <049D08F4-BC16-D2E7-04B9-CBB1E89CC01D> /usr/local/lib/ruby/1.8/i686-darwin10.0.0/digest/sha1.bundle
0x10073d000 - 0x10076efff +nkf.bundle ??? (???) <CB4E2B49-D8D7-29B2-9215-67BECCD45AA3> /usr/local/lib/ruby/1.8/i686-darwin10.0.0/nkf.bundle
0x100781000 - 0x10078bfff +socket.bundle ??? (???) <431898C6-794A-BF22-A125-B7D60D554CDA> /usr/local/lib/ruby/1.8/i686-darwin10.0.0/socket.bundle
0x100790000 - 0x100791fff +digest.bundle ??? (???) <955B9322-A593-9926-110F-449CBDA89DF9> /usr/local/lib/ruby/1.8/i686-darwin10.0.0/digest.bundle
0x100795000 - 0x1007a1fff +bluecloth_ext.bundle ??? (???) <875327C8-E817-9F12-0EE4-6A49562C3F8E> /usr/local/lib/ruby/gems/1.8/gems/bluecloth-2.0.5/lib/bluecloth_ext.bundle
0x1007a6000 - 0x1007e2ff7 +openssl.bundle ??? (???) <499510E9-913B-A675-3075-9A0AEC5634B8> /usr/local/lib/ruby/1.8/i686-darwin10.0.0/openssl.bundle
0x10123a000 - 0x1012abfff +redcloth_scan.bundle ??? (???) <96734FEE-7F82-4F10-D8C2-DA1FDC433DAC> /usr/local/lib/ruby/gems/1.8/gems/RedCloth-4.2.2/lib/redcloth_scan.bundle
0x1012af000 - 0x1012b2ff7 +cparse.bundle ??? (???) <EF75611D-1C93-CF58-C128-85D7CF8A061B> /usr/local/lib/ruby/1.8/i686-darwin10.0.0/racc/cparse.bundle
0x1012b5000 - 0x1012b7ff7 +iconv.bundle ??? (???) <BDB48C60-66D8-036F-D6E9-F7669CBDA16C> /usr/local/lib/ruby/1.8/i686-darwin10.0.0/iconv.bundle
0x1012bb000 - 0x1012bffff +parser.bundle ??? (???) <261FDCD0-29C8-8A3B-9B72-D4BC51715B67> /usr/local/lib/ruby/gems/1.8/gems/json-1.1.3/ext/json/ext/parser.bundle
0x1012c3000 - 0x1012c7ff7 +generator.bundle ??? (???) <B354DFF3-AE88-AC13-2D6A-C8827C0033F2> /usr/local/lib/ruby/gems/1.8/gems/json-1.1.3/ext/json/ext/generator.bundle
0x1012cb000 - 0x1012dafff +nokogiri.bundle ??? (???) <81F28AEC-FF97-8911-4728-9253F14205F3> /usr/local/lib/ruby/gems/1.8/gems/nokogiri-1.4.1/lib/nokogiri/nokogiri.bundle
0x1012eb000 - 0x1012f2ff7 +ruby_debug.bundle ??? (???) <2AA2B821-3C45-14A6-9573-38D651556B36> /Users/lbayes/.gem/ruby/1.8/gems/ruby-debug-base-0.10.3/lib/ruby_debug.bundle
0x1012f7000 - 0x1012f9fff +trace_nums.bundle ??? (???) <70D184EC-461F-D2E6-8094-B56FB2BACE83> /Users/lbayes/.gem/ruby/1.8/gems/linecache-0.43/ext/trace_nums.bundle
0x101802000 - 0x101815fe7 +libexslt.0.dylib ??? (???) <FD064ED5-7CC6-E58E-00DD-06775F1BBE72> /usr/local/lib/libexslt.0.dylib
0x10181b000 - 0x10185bff7 +libxslt.1.dylib ??? (???) <8A989A1C-85AE-2CE9-068A-C6DCDF839566> /usr/local/lib/libxslt.1.dylib
0x101867000 - 0x101869ff7 +readline.bundle ??? (???) <79F5B425-0C27-CF59-2EE6-E05AFE3EF850> /usr/local/lib/ruby/1.8/i686-darwin10.0.0/readline.bundle
0x10186d000 - 0x101889ff7 libedit.2.dylib ??? (???) <F9D005F8-74B8-CC05-2697-24C49E0CC1EF> /usr/lib/libedit.2.dylib
0x101898000 - 0x1018a6fff +sqlite3_api.bundle ??? (???) <50ED247E-9C93-8CA1-8E7E-18F715A60DE9> /usr/local/lib/ruby/gems/1.8/gems/sqlite3-ruby-1.2.5/lib/sqlite3_api.bundle
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0x7fff5fc00000 - 0x7fff5fc3bdef dyld 132.1 (???) <B633F790-4DDB-53CD-7ACF-2A3682BCEA9F> /usr/lib/dyld
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0x7fff81877000 - 0x7fff8196ffe7 libiconv.2.dylib ??? (???) <ECEE3D93-B5E3-F0E0-803E-CA3DC3B33D57> /usr/lib/libiconv.2.dylib
0x7fff81970000 - 0x7fff81b2eff7 libSystem.B.dylib ??? (???) <526DD3E5-2A8B-4512-ED97-01B832369959> /usr/lib/libSystem.B.dylib
0x7fff833f5000 - 0x7fff834aefff libsqlite3.dylib ??? (???) <5A15E12A-AE8F-1A36-BBC7-564E7D7AD0FB> /usr/lib/libsqlite3.dylib
0x7fff85363000 - 0x7fff853e0fef libstdc++.6.dylib ??? (???) <35ECA411-2C08-FD7D-11B1-1B7A04921A5C> /usr/lib/libstdc++.6.dylib
0x7fff853e1000 - 0x7fff853f2fef libz.1.dylib ??? (???) <3A7A4C48-A4C8-A78A-8B87-C0DDF6601AC8> /usr/lib/libz.1.dylib
0x7fff85cf9000 - 0x7fff85d38fef libncurses.5.4.dylib ??? (???) <E0A07C12-D912-DF26-9E38-C50484D96EB0> /usr/lib/libncurses.5.4.dylib
0x7fff86662000 - 0x7fff86783fe7 libcrypto.0.9.8.dylib ??? (???) <32F2A87F-B146-BBF2-3AD1-494C686F1EE3> /usr/lib/libcrypto.0.9.8.dylib
0x7fff87f25000 - 0x7fff87f5ffff libssl.0.9.8.dylib ??? (???) <0714FA32-C193-CD96-80D1-6FCF06A0ED2E> /usr/lib/libssl.0.9.8.dylib
0x7fff886ad000 - 0x7fff886f9fff libauto.dylib ??? (???) <072804DF-36AD-2DBE-7EF8-639CFB79077F> /usr/lib/libauto.dylib
0x7fff88894000 - 0x7fff8894afff libobjc.A.dylib ??? (???) <F206BE6D-8777-AE6C-B367-7BEA76C14241> /usr/lib/libobjc.A.dylib
0x7fff88c99000 - 0x7fff88c9dff7 libmathCommon.A.dylib ??? (???) <95718673-FEEE-B6ED-B127-BCDBDB60D4E5> /usr/lib/system/libmathCommon.A.dylib
0x7fffffe00000 - 0x7fffffe01fff libSystem.B.dylib ??? (???) <526DD3E5-2A8B-4512-ED97-01B832369959> /usr/lib/libSystem.B.dylib回答 5
Stack Overflow用户
回答已采纳
发布于 2010-02-24 02:24:59
好了，我已经在我的机器上修复了这个问题。我不确定确切的原因，但是把ruby-debug gem降级到0.10.0版本就解决了这个问题。
特定的修复程序正在运行以下命令：
sudo gem uninstall ruby-debug
sudo gem install ruby-debug --version 0.10.0Stack Overflow用户
发布于 2010-02-18 13:56:19
我自己也遇到了类似的问题。
这通常是由于gem加载了为不同体系结构编译的库，而gem具有本机编译的比特。(听起来你已经走上这条路了。)
不幸的是，这也包括编译为通用二进制文件的库。
在我的例子中，这个问题是因为Ruby加载了错误的OpenSSL版本。也许你也会遇到类似的问题。根据上面的答案，听起来ruby-debug是导致问题的原因。它会链接到错误的库吗？
以下是对我有帮助的问题的一些链接：
Stack Overflow用户
发布于 2010-02-17 06:41:44
我没有解决方案，但我已经找到了重现此问题的方法。
在今天安装ruby-debug-0.10.3gem之后，我的Rails 2.1.1测试在一个
Open4::popen4( "FOO" ) do | pid, stdin, stdout, stderr |
stderr.read
end块已经开始抛出和你得到的一样的“BUG Bus Error ruby 1.8.7 (2009-06-12 patchlevel 174) i686-darwin10.2.0”。
如果我'sudo gem uninstall ruby-debug'，测试运行并通过。如果我再次执行“sudo gem install ruby-debug”，测试就会抛出。
我在Snow Leopard上运行了一个Rails 2.1.1项目，安装了Ruby 1.8.7 (2009-06-12 patchlevel 174) i686-darwin10.2.0。
为64位重新构建ruby-debug gem并不能解决我的问题。
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/2112371
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