Re: [PATCH iwl-net v1] idpf: fix potential memory leak on kcalloc() failure

[Simon Horman <horms@kernel.org>]

On Fri, Apr 11, 2025 at 07:09:12AM +0200, Michal Swiatkowski wrote:
> On Mon, Apr 07, 2025 at 11:43:50AM +0100, Simon Horman wrote:
> > On Fri, Apr 04, 2025 at 12:54:21PM +0200, Michal Swiatkowski wrote:
> > > In case of failing on rss_data->rss_key allocation the function is
> > > freeing vport without freeing earlier allocated q_vector_idxs. Fix it.
> > > 
> > > Move from freeing in error branch to goto scheme.
> > > 
> > > Fixes: 95af467d9a4e ("idpf: configure resources for RX queues")
> > 
> > Hi Michal,
> > 
> > WRT leaking q_vector_indxs, that allocation is not present at
> > the commit cited above, so I think the correct Fixes tag for
> > that problem is the following, where that allocation was added:
> > 
> > Fixes: d4d558718266 ("idpf: initialize interrupts and enable vport")
> 
> Thanks for checking that. I agree, my fixes is wrong.
> 
> > 
> > I do note that adapter->vport_config[idx] may be allocated but
> > not freed on error in idpf_vport_alloc(). But I assume that this
> > is not a leak as it will eventually be cleaned up by idpf_remove().
> 
> Right, it will be better to free it directly for better readable.
> Probably candidate for net-next changes.

Thanks, that does sound like a nice idea.

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