Re: [LTP] mtest01: free memory allocated

[Jiri Palecek <jpalecek@web.de>]

Francesco RUNDO napsal(a):
> Hi All,
>
> I'm running LTP (I'm using ltp-full-20090731....but asap I will upgrade
> to latest) on SH based platforms.
> Now, during a test-session. I've noted that the test "mtest01" reduced
> drastically the system memory and after its execution this memory wasn't
> de-allocated.
>
> I've analysed the mtest01.c code and I've noted that no "free()"
> istruction was associated to the related malloc:

Does this mean the kernel doesn't free processes' allocated memory on exit? Is 
this intentional (and documented somewhere)?

> ......
> if((mem = (char*)malloc(chunksize)) == NULL) {
> ......
>
> I've simply added a "free(mem)" of the allocated memory and the issue
> was addressed successfully.

This isn't complete by far. You don't free all the allocations, and there are 
code paths which don't pass your line before exit.

Regards
     Jiri Palecek

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