Re: [PATCH] objtool: prevent memory leak in error paths

[Peter Zijlstra]

On Wed, Apr 14, 2021 at 11:47:09AM +0300, Dan Carpenter wrote:
> On Wed, Apr 14, 2021 at 01:45:11AM +0500, Muhammad Usama Anjum wrote:
> > Memory allocated by sym and sym->name isn't being freed if some error
> > occurs in elf_create_undef_symbol(). Free the sym and sym->name if error
> > is detected before returning NULL.
> > 
> > Addresses-Coverity: ("Prevent memory leak")
> > Fixes: 2f2f7e47f052 ("objtool: Add elf_create_undef_symbol()")
> > Signed-off-by: Muhammad Usama Anjum <musamaanjum@xxxxxxxxx>
> > ---
> > Only build has been tested.
> > 
> 
> Just ignore leaks from the tools/ directory.  These things run and then
> exit and all the memory is freed.  #OldSchoolGarbageCollector

Mostly true; but I suspect tools/perf might care, it has some longer
running things in.