Hi,

2016-06-27 5:33 GMT+03:00 Jeffrey Walton <noloader@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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