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为什么Ruby只在我的系统上抛出一个分段错误,而且只在这个Rails应用程序中抛出?

  •  14
  • Luke Bayes  · 技术社区  · 15 年前

    以下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
    

    我在这条线上遇到“总线错误”:

    errors = stderr.read
    

    如果我对该行进行注释,则在该行上会出现“分段错误”:

    bytes = stdout.read
    

    我显然在使用Open4库并执行一个外部进程。当直接从终端执行此外部进程时,以及当此Ruby代码在特定Rails应用程序之外运行时,甚至在另一个更简单的Rails应用程序中运行时,此外部进程都能完美地工作。

    为了重现错误,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
    

    我正在MacBook Pro上运行雪豹MacOSX 10.6.2(10C540),配备Intel Core 2 Duo 2.53 GHz和8GB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库安装不正确。我能够安装这两个库,现在GDB不再告诉我任何我认为有用的东西。以下是GDB的电流输出:

    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gems。我是通过跑步来做到这一点的:

    sudo gem pristine --all
    

    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
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    14  libruby.dylib                   0x0000000100044c2d ruby_xmalloc + 107
    15  libruby.dylib                   0x0000000100033a76 scope_dup + 100
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    17  libruby.dylib                   0x0000000100034dbd proc_invoke + 1020
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    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
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    37  libruby.dylib                   0x000000010002dc1b rb_call0 + 4285
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    40  libruby.dylib                   0x00000001000249fc rb_eval + 4855
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    44  libruby.dylib                   0x0000000100025617 rb_eval + 7954
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    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
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    51  libruby.dylib                   0x000000010002ed88 rb_f_send + 170
    52  libruby.dylib                   0x000000010002e080 call_cfunc + 283
    53  libruby.dylib                   0x000000010002d16a rb_call0 + 1548
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    55  libruby.dylib                   0x00000001000260fb rb_eval + 10742
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    57  libruby.dylib                   0x00000001000251d0 rb_eval + 6859
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    59  libruby.dylib                   0x000000010002dc1b rb_call0 + 4285
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    66  libruby.dylib                   0x00000001000061e4 rb_ary_each + 100
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    79  libruby.dylib                   0x00000001000061e4 rb_ary_each + 100
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    88  libruby.dylib                   0x00000001000249fc rb_eval + 4855
    89  libruby.dylib                   0x000000010002dc1b rb_call0 + 4285
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    92  libruby.dylib                   0x0000000100025617 rb_eval + 7954
    93  libruby.dylib                   0x000000010002dc1b rb_call0 + 4285
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    95  libruby.dylib                   0x000000010002614c rb_eval + 10823
    96  libruby.dylib                   0x0000000100025617 rb_eval + 7954
    97  libruby.dylib                   0x000000010002dc1b rb_call0 + 4285
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    100 libruby.dylib                   0x0000000100025617 rb_eval + 7954
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    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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        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
    
    5 回复  |  直到 15 年前
        1
  •  8
  •   alimills    15 年前

    好的,我已经在我的机器上修好了。我不知道确切的原因,但是将ruby调试gem降级到0.10.0版本解决了这个问题。

    sudo gem uninstall ruby-debug
    
    sudo gem install ruby-debug --version 0.10.0
    
        2
  •  4
  •   Andrew Grimm atk    13 年前

    我自己也遇到了类似的问题。

    这通常是由带有本地编译位的gem加载为不同体系结构编译的库引起的(听起来你已经走上了这条路。)

    以下是一些帮助我解决问题的链接:

        3
  •  1
  •   alimills    15 年前

    Open4::popen4( "FOO" ) do | pid, stdin, stdout, stderr |
        stderr.read
    end
    

    block已开始抛出与您得到的相同的“[BUG]总线错误ruby 1.8.7(2009-06-12 patchlevel 174)[i686-darwin10.2.0]”。

    如果我“sudo gem uninstall ruby debug”,测试将运行并通过。如果我再次“sudogem安装ruby调试”,测试将抛出。

    我正在雪豹上运行Rails 2.1.1项目,安装了Ruby 1.8.7(2009-06-12 patchlevel 174)[i686-darwin10.2.0]。

    重建64位的ruby调试gem并不能解决我的问题。

        4
  •  0
  •   klochner    15 年前

    RDoc

    Linux、Unix、BSD等的用户将需要Unix包。Aras Open4 gem是一个依赖项。 (OCI)将要选择宝石 适合他们的Ruby版本。这个 这里真正的问题是编译器版本。 由于 有些不兼容在

        5
  •  -1
  •   Mick    15 年前

    这听起来像是硬件错误,而不是软件错误。检查你的机器,尤其是内存。