1

我在我的程序上运行 Valgrind。它向我显示了两个错误,但仅提及针对它们的地址,而不是实际代码,即使在调试版本中也是如此。

你能请。帮助我理解它所说的内容以及如何到达错误的代码行?

输出是

==23002== Memcheck, a memory error detector.  
==23002== Copyright (C) 2002-2005, and GNU GPL'd, by Julian Seward et al.  
==23002== Using LibVEX rev 1575, a library for dynamic binary translation.  
==23002== Copyright (C) 2004-2005, and GNU GPL'd, by OpenWorks LLP.  
==23002== Using valgrind-3.1.1, a dynamic binary instrumentation framework.  
==23002== Copyright (C) 2000-2005, and GNU GPL'd, by Julian Seward et al.  
==23002== For more details, rerun with: -v  
==23002==  
==23002== Invalid read of size 4  
==23002== at 0x8AAE6D: open_path (in /lib/ld-2.3.4.so)  
==23002== by 0x8AB68B: _dl_map_object (in /lib/ld-2.3.4.so)  
==23002== by 0x8AF307: openaux (in /lib/ld-2.3.4.so)  
==23002== by 0x8B066D: _dl_catch_error (in /lib/ld-2.3.4.so)  
==23002== by 0x8AF5A9: _dl_map_object_deps (in /lib/ld-2.3.4.so)  
==23002== by 0x8A6459: dl_main (in /lib/ld-2.3.4.so)  
==23002== by 0x8B3DF4: _dl_sysdep_start (in /lib/ld-2.3.4.so)  
==23002== by 0x8A53EF: _dl_start (in /lib/ld-2.3.4.so)  
==23002== by 0x8A47C6: (within /lib/ld-2.3.4.so)  
==23002== Address 0x2F8BBBF8 is not stack'd, malloc'd or (recently) free'd  
==23002==  
==23002== Process terminating with default action of signal 11 (SIGSEGV)  
==23002== Access not within mapped region at address 0x2F8BBBF8  
==23002== at 0x8AAE6D: open_path (in /lib/ld-2.3.4.so)  
==23002== by 0x8AB68B: _dl_map_object (in /lib/ld-2.3.4.so)  
==23002== by 0x8AF307: openaux (in /lib/ld-2.3.4.so)  
==23002== by 0x8B066D: _dl_catch_error (in /lib/ld-2.3.4.so)  
==23002== by 0x8AF5A9: _dl_map_object_deps (in /lib/ld-2.3.4.so)  
==23002== by 0x8A6459: dl_main (in /lib/ld-2.3.4.so)  
==23002== by 0x8B3DF4: _dl_sysdep_start (in /lib/ld-2.3.4.so)  
==23002== by 0x8A53EF: _dl_start (in /lib/ld-2.3.4.so)  
==23002== by 0x8A47C6: (within /lib/ld-2.3.4.so)  
==23002==  
==23002== Jump to the invalid address stated on the next line  
==23002== at 0x246: ???  
==23002== Address 0x246 is not stack'd, malloc'd or (recently) free'd  
==23002==  
==23002== Process terminating with default action of signal 11 (SIGSEGV)  
==23002== Bad permissions for mapped region at address 0x246  
==23002== at 0x246: ???  
==23002==  
==23002== ERROR SUMMARY: 2 errors from 2 contexts (suppressed: 0 from 0)  
==23002== malloc/free: in use at exit: 0 bytes in 0 blocks.  
==23002== malloc/free: 0 allocs, 0 frees, 0 bytes allocated.  
==23002== For counts of detected errors, rerun with: -v  
==23002== All heap blocks were freed -- no leaks are possible.  
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2 回答 2

1

这个地址看起来是假的。忘记 valgrind,启动gdb来查找程序的段错误。

于 2010-02-26T15:00:23.943 回答
1

没有调试信息,因为指示的代码在ld-2.3.4.so库中(这是动态链接器)。

在我看来,您的可执行文件链接到损坏的动态库文件(或试图通过该机制加载不是动态库的文件)。

于 2010-02-27T06:51:12.063 回答