canon example randomly crashed on my i.MX6Q device about cf4ocl HOT 2 CLOSED

Hi, thanks for the feedback. Unfortunately I currently don't have access to such a board, but I can offer some suggestions for solving this problem. I think the best bet is to build the library and the examples in CMake's Debug mode, and then debug the canon example using gdb (GNU Debugger). Set a breakpoint (b) before where the crash seems to be occurring, and then execute instructions line-by-line (n), until the crash occurs. When you detect the instruction responsible for the crash, repeat the process, but instead of executing that specific instruction (n), step into it (s), and then execute instructions in the called function (n) until you detect the instruction that caused the crash. Repeat this process again until you find the lowest level instruction which is causing the crash. This way you can determine where exactly is the crash occurring, i.e. in Vivante's OpenCL, in cf4ocl, in the canon example, etc.

In parentheses I specified gdb commands. Here's a short list of these and other useful gdb commands:

b / break - Set a breakpoint at a specified line
n / next - Execute next instruction (but don't go into it)
s / step - Execute next instruction and go into it if source available
r / run - Run program
s / stop - Stop running program
q / quit - Quit GDB
set args - Set program args

You invoke gdb like this:

$ gbd name_of_executable

Do let me know if the problem is in cf4ocl or the canon example. The examples run fine on Linux, Mac, and Windows on x86/x86_64 platforms, which is what I have available for testing.

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Closed this issue due to lack of feedback.

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