I'm trying to use Google's Address Sanitizer with a CUDA project, more precisely with OpenCV cuda functions. However I got an 'out of memory' error on the first cuda call.
OpenCV Error: Gpu API call (out of memory) in getDevice, file opencv-2.4.11/src/opencv-2.4.11/modules/dynamicuda/include/opencv2/dynamicuda/dynamicuda.hpp, line 664
terminate called after throwing an instance of 'cv::Exception'
what(): opencv-2.4.11/src/opencv-2.4.11/modules/dynamicuda/include/opencv2/dynamicuda/dynamicuda.hpp:664: error: (-217) out of memory in function getDevice
It can be reproduced with
#include <opencv2/gpu/gpu.hpp>
int main()
{
cv::gpu::printCudaDeviceInfo(cv::gpu::getDevice());
return 0;
}
compiled with
clang++ -fsanitize=address -lstdc++ -lopencv_gpu -lopencv_core -o sanitizer sanitizer.cpp && LD_LIBRARY_PATH=/usr/local/lib ./sanitizer
I've got the same result with gcc. I've also tried blacklisting cuda functions without result.
Now using cuda without opencv:
#include <cuda_runtime.h>
int main()
{
int count = -1;
cudaGetDevice(&count);
cout << "Device count: " << count << endl;
return 0;
}
clang++ -O1 -g -fsanitize=address -fsanitize-blacklist=asan.blacklist -stdlib=libstdc++ -lstdc++ -I/opt/cuda/include -L/opt/cuda/lib64 -lcudart -o sanitizer sanitizer.cpp && ./sanitizer
The sanitizer stops on a memory leak:
=================================================================
==25344==ERROR: LeakSanitizer: detected memory leaks
Direct leak of 136 byte(s) in 1 object(s) allocated from:
#0 0x4bc4a2 (/home/pluc/work/tests/sanitizer+0x4bc4a2)
#1 0x7f71f0fa69ba (<unknown module>)
SUMMARY: AddressSanitizer: 136 byte(s) leaked in 1 allocation(s).
My question is how can I use the address sanitizer to sanitize my software without getting stuck with this? How can I at least properly blacklist all cuda related calls?
I didn't find anything relevant on a famous web search engine. It's like people don't use cuda or asan or both. Do guys just have a build with cuda completly disabled?
I'm guessing asan is having a hard time with cuda memory management but I'm looking for a way to use this tool for the rest of my codebase at least.
