core dump on Assertion failure

[Lucan_C_]

Hi,

I saw a core dump due to such assertion failure. I start having this failure after integrate some third party libraries into my system. I suspect that third-party library is using some native thread. But still it does not make sense to crash tbb.

I'm using Tbb on fedora20 x86-64.

Assertion block->checkFreePrecond(object) failed on line 2396 of file ../../src/tbbmalloc/frontend.cpp
Detailed description: Possible double free or heap corruption.

My question is: what does this failure mean?

[Vladimir_P_1234567890]

Hello Lucan,

Do you have a backtrace to understand where this second scalable_free() is called from?

--Vladimir

[Vladimir_P_1234567890]

This might be related to this forum thread https://software.intel.com/en-us/forums/topic/520693.

--Vladimir

[Lucan_C_]

Hi Vladimir,

Thanks for the suggestion.

Here's my super simple example which's having this assertion failure.

#include <iostream>

#include "tbb/task_scheduler_init.h"

int main() {
  tbb::task_scheduler_init t;

  	std::cout << "Hello World!!!" << std::endl;
  	return 0;
}

build script:

g++ src/*.cc -g -pthread -L"tbb43_20140724oss/lib/intel64/gcc4.4/" -L"aap/lib/" -ltbb_debug -ltbbmalloc_debug -ltbbmalloc_proxy_debug -laapapi1 -laapapi2 -I"tbb43_20140724oss/include/" -o execute

Note:

aap is my third-party library, I linked with aapapi1 and aapapi2. In the example, I only initialize tbb and did not even use aap.

backtrace:(please see attached file, if I paste the bt here, my submission will trigger the system spam filter. I uploaded a screenshot)

Vladimir Polin (Intel) wrote:

This might be related to this forum thread https://software.intel.com/en-us/forums/topic/520693.

--Vladimir

[Alexandr_K_Intel1]

Lucan, Could you try build your small reproducer without -ltbbmalloc_debug and -ltbbmalloc_proxy_debug? And than run resulted executable (do not dependent on libtbbmalloc_debug) under tool like Valgrind to check double-free presence?

[Lucan_C_ · Accepted solution]

@Vladimir, @Alexandr, Thanks for your suggestions.

I'm able to track down the problem. It's not related to tbb, though the runtime reported error on tbb assertion. Other libraries cause this problem.