linux-kernel - Re: [v3 1/2] device-dax: fix memory and resource leak if hotplug fails

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Date:   Thu, 25 Apr 2019 14:51:37 -0400
From:   Pavel Tatashin <pasha.tatashin@...een.com>
To:     Dave Hansen <dave.hansen@...el.com>
Cc:     James Morris <jmorris@...ei.org>, Sasha Levin <sashal@...nel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        linux-mm <linux-mm@...ck.org>,
        linux-nvdimm <linux-nvdimm@...ts.01.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Michal Hocko <mhocko@...e.com>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Dan Williams <dan.j.williams@...el.com>,
        Keith Busch <keith.busch@...el.com>,
        Vishal L Verma <vishal.l.verma@...el.com>,
        Dave Jiang <dave.jiang@...el.com>,
        Ross Zwisler <zwisler@...nel.org>,
        Tom Lendacky <thomas.lendacky@....com>,
        "Huang, Ying" <ying.huang@...el.com>,
        Fengguang Wu <fengguang.wu@...el.com>,
        Borislav Petkov <bp@...e.de>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Yaowei Bai <baiyaowei@...s.chinamobile.com>,
        Takashi Iwai <tiwai@...e.de>,
        Jérôme Glisse <jglisse@...hat.com>,
        David Hildenbrand <david@...hat.com>
Subject: Re: [v3 1/2] device-dax: fix memory and resource leak if hotplug fails

On Thu, Apr 25, 2019 at 2:32 PM Dave Hansen <dave.hansen@...el.com> wrote:
>
> On 4/25/19 10:54 AM, Pavel Tatashin wrote:
> >       rc = add_memory(numa_node, new_res->start, resource_size(new_res));
> > -     if (rc)
> > +     if (rc) {
> > +             release_resource(new_res);
> > +             kfree(new_res);
> >               return rc;
> > +     }
>
> Looks good to me:
>
> Reviewed-by: Dave Hansen <dave.hansen@...el.com>

Thank you Dave.

Pasha