线程齐态(TSAN） - 共享库中有意义的信息

我的应用使用了WXWIDGETS库，该库是通过gcc 5.1.0构建的，使用-g和-o0

我使用clang 36 -g -fsanitize = thread -stdlib = libc 编制了我的应用程序，并使用clang 36 -g -fsanitize = thread = thread -stdlib = libc -lc abi链接它。它动态链接到WXWIDGETS。

我收到的警告之一是：

==================
WARNING: ThreadSanitizer: lock-order-inversion (potential deadlock) (pid=52741)
  Cycle in lock order graph: M115 (0x7d080000ea60) => M976 (0x7d0800000100) => M115
  Mutex M976 acquired here while holding mutex M115 in main thread:
    #0 pthread_mutex_lock /home/xxx/sourceInstallations/llvm-3.6.0/projects/compiler-rt/lib/tsan/../sanitizer_common/sanitizer_common_interceptors.inc:3008 (wxDebugSleep+0x00000043b0ef)
    #1 <null> <null> (libwx_baseu-3.0.so.0+0x0000002376fa)
    #2 _start <null> (wxDebugSleep+0x00000041be4e)
    Hint: use TSAN_OPTIONS=second_deadlock_stack=1 to get more informative warning message
  Mutex M115 acquired here while holding mutex M976 in main thread:
    #0 pthread_mutex_lock /home/xxx/sourceInstallations/llvm-3.6.0/projects/compiler-rt/lib/tsan/../sanitizer_common/sanitizer_common_interceptors.inc:3008 (wxDebugSleep+0x00000043b0ef)
    #1 <null> <null> (libwx_baseu-3.0.so.0+0x0000002376fa)
    #2 wxCriticalSectionLocker::wxCriticalSectionLocker(wxCriticalSection&) /usr/local/include/wx-3.0/wx/thread.h:307:9 (wxDebugSleep+0x000000473216)
    #3 <null> <null> (libwx_baseu-3.0.so.0+0x00000018b297)
    #4 _start <null> (wxDebugSleep+0x00000041be4e)
SUMMARY: ThreadSanitizer: lock-order-inversion (potential deadlock) ??:0 ??
==================

我不高兴，因为：（1）我想在WXWIDGETS库中找到线程错误；（2）我希望能够在一个警告与抑制文件比率或附近进行抑制文件。

因此，我从源通过clang 3.6.0重新编译/链接了WXWIDGETS库，添加-fsanitize = thread -Stdlib = libc -lc abi。交叉我的手指，完成了。

ran sudo在我的wxwidgets gcc build目录中卸载，而sudo在我的wxwidgets clang build build build目录中安装。

上面的警告现在显示：

==================
WARNING: ThreadSanitizer: lock-order-inversion (potential deadlock) (pid=68453)
  Cycle in lock order graph: M115 (0x7d080000ea60) => M976 (0x7d0800000100) => M115
  Mutex M976 acquired here while holding mutex M115 in main thread:
    #0 pthread_mutex_lock /home/xxx/sourceInstallations/llvm-3.6.0/projects/compiler-rt/lib/tsan/../sanitizer_common/sanitizer_common_interceptors.inc:3008 (wxDebugSleep+0x00000043b0ef)
    #1 <null> <null> (libwx_baseu-3.0.so.0+0x0000003c24f9)
    #2 <null> <null> (libwx_baseu-3.0.so.0+0x0000003d0387)
    #3 <null> <null> (libwx_baseu-3.0.so.0+0x0000003d0000)
    #4 <null> <null> (libwx_baseu-3.0.so.0+0x0000001bd91c)
    #5 <null> <null> (libwx_baseu-3.0.so.0+0x000000279cd6)
    #6 <null> <null> (libwx_baseu-3.0.so.0+0x00000027a6da)
    #7 <null> <null> (libwx_baseu-3.0.so.0+0x00000024445d)
    #8 <null> <null> (libwx_baseu-3.0.so.0+0x000000244243)
    #9 <null> <null> (libwx_baseu-3.0.so.0+0x000000245a67)
    #10 <null> <null> (libwx_baseu-3.0.so.0+0x000000246856)
    #11 <null> <null> (libwx_baseu-3.0.so.0+0x000000245430)
    #12 <null> <null> (libwx_baseu-3.0.so.0+0x000000245934)
    #13 main /home/xxx/code/testing/wxDebugSleep/wxDebugSleep.cpp:11:1 (wxDebugSleep+0x000000472e9c)
    Hint: use TSAN_OPTIONS=second_deadlock_stack=1 to get more informative warning message
  Mutex M115 acquired here while holding mutex M976 in main thread:
    #0 pthread_mutex_lock /home/xxx/sourceInstallations/llvm-3.6.0/projects/compiler-rt/lib/tsan/../sanitizer_common/sanitizer_common_interceptors.inc:3008 (wxDebugSleep+0x00000043b0ef)
    #1 <null> <null> (libwx_baseu-3.0.so.0+0x0000003c24f9)
    #2 <null> <null> (libwx_baseu-3.0.so.0+0x0000003d0387)
    #3 wxCriticalSection::Enter(void) /usr/local/include/wx-3.0/wx/thread.h:291:52 (wxDebugSleep+0x00000047c570)
    #4 wxCriticalSectionLocker::wxCriticalSectionLocker(wxCriticalSection&) /usr/local/include/wx-3.0/wx/thread.h:307:9 (wxDebugSleep+0x000000473216)
    #5 <null> <null> (libwx_baseu-3.0.so.0+0x000000245cf0)
    #6 <null> <null> (libwx_baseu-3.0.so.0+0x000000246949)
    #7 <null> <null> (libwx_baseu-3.0.so.0+0x00000024574b)
    #8 <null> <null> (libwx_baseu-3.0.so.0+0x000000245934)
    #9 main /home/xxx/code/testing/wxDebugSleep/wxDebugSleep.cpp:11:1 (wxDebugSleep+0x000000472e9c)
SUMMARY: ThreadSanitizer: lock-order-inversion (potential deadlock) ??:0 ??
==================

我在运行程序的环境中定义了tsan_options = second_deadlock_stack = 1，它没有更改输出。

好吧，这是一些进步。我敢肯定我要使用错误的术语，但这就像它缺少图书馆的符号文件。

我已经检查了它使用Clang＆amp;-fsanitize = thread（ldd和时间戳。）

我已经检查了库是否正在使用-g和-o0编译（即使它可能更高。）

如果很重要，FreeBSD 10.1 64位。clang是从源头编译的。

问题1-如何从共享库中获取"堆栈跟踪"以显示文件名和行号？

问题2-如果我不能，如何制作一个好的抑制文件？问题在于WXWIDGETS调用了很多我的代码，因此我认为我无法阻止包括库在内的任何堆栈。而且，当然，即使我可以使用偏移来制作抑制文件，如果我重新编译了库，所有这些都可以更改。