[dpdk-dev] [PATCH v3 4/9] mem: fix potential resource leak

[Bruce Richardson]

On Fri, Apr 27, 2018 at 04:39:34PM +0100, Burakov, Anatoly wrote:
> On 27-Apr-18 4:18 PM, Bruce Richardson wrote:
> > On Wed, Apr 25, 2018 at 10:56:42AM +0100, Anatoly Burakov wrote:
> > > We close fd if we managed to find it in the list of allocated
> > > segment lists (which should always be the case under normal
> > > conditions), but if we didn't, the fd was leaking. Close it if
> > > we couldn't find it in the segment list. This is not an issue
> > > as if the segment is zero length, we're getting rid of it
> > > anyway, so there's no harm in not storing the fd anywhere.
> > > 
> > > Coverity issue: 272568
> > > 
> > 
> > This coverity issue indicates two resource leaks, while I think this patch
> > only closes one of them.
> 
> The other issue is actually a false positive. We couldn't have gotten the fd
> if there wasn't a tailq entry for that fd, but if we don't resize and remove
> the file, we want to keep the fd. So the "int fd" goes out of scope, but
> actually it's stored in the tailq, and thus doesn't leak.
> 
I'm not sure coverity is going to recognise that fact. However, given that
this is a fix for one of the flagged problems:

Acked-by: Bruce Richardson <bruce.richardson at intel.com>