Hi,

2016-06-27 5:33 GMT+03:00 Jeffrey Walton <noloa...@gmail.com>:

> Hi Everyone,
>
> I have a test script from help that repeatedly builds and runs a
> library under different configurations. The script includes multiple
> Asan tests.
>
> The Asan tests are producing some findings under ARM32 as shown below.
> Other platforms do not include Asan findings. In addition, Valgrind
> does nt produce any findings.
>
> The test program is always built with at least -g2, and sometimes
> built with -g3. However, I am not seeing the symbolication. According
> to the GCC folks, asan_symbolize is not required for GCC because it
> uses libbacktrace. Also see
> http://bugzilla.redhat.com/show_bug.cgi?id=1250844.
>
> Why am I lacking symbolization, and how do I achieve it?
>
> **********
>
> AddressSanitizer: stack-buffer-overflow on address 0xbec57b18 at pc
> 0x38c651 bp 0xbec579e0 sp 0xbec579e4
>
> AddressSanitizer: stack-buffer-overflow on address 0xbedbae9c at pc
> 0x6553f bp 0xbedbae68 sp 0xbedbae6c
>
> AddressSanitizer: stack-buffer-overflow on address 0xbea67b18 at pc
> 0x38cbc5 bp 0xbea679e0 sp 0xbea679e4
>
> AddressSanitizer: stack-buffer-overflow on address 0xbef0fe9c at pc
> 0x66117 bp 0xbef0fe68 sp 0xbef0fe6c
>
> **********
>

Are these full backtraces you got from ASan? If so, do you use stripped
libraries on your system (on Ubuntu, I guess, you do). Could this issue (
https://gcc.gnu.org/ml/gcc-patches/2016-03/msg00132.html) be related to to
your problem?

-Maxim


>
> $ uname -a
> Linux cubietruck 3.4.39 #35 SMP PREEMPT Tue Sep 15 17:17:33 CST 2015
> armv7l armv7l armv7l GNU/Linux
>
> $ g++ --version
> g++ (Ubuntu/Linaro 4.8.2-19ubuntu1) 4.8.2
> Copyright (C) 2013 Free Software Foundation, Inc.
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