linux-kernel - Re: [PATCH 1/4] resource: add a not device managed request_free_mem

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Message-ID: <CAPcyv4hUC5ReY9v=Lt0M=jPtg3V05suOgt4fVdT4niO_k4hN8Q@mail.gmail.com>
Date:   Mon, 19 Aug 2019 21:38:25 -0700
From:   Dan Williams <dan.j.williams@...el.com>
To:     Christoph Hellwig <hch@....de>
Cc:     Jason Gunthorpe <jgg@...lanox.com>,
        Bharata B Rao <bharata@...ux.ibm.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Linux MM <linux-mm@...ck.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-nvdimm <linux-nvdimm@...ts.01.org>,
        Ira Weiny <ira.weiny@...el.com>
Subject: Re: [PATCH 1/4] resource: add a not device managed
 request_free_mem_region variant

On Mon, Aug 19, 2019 at 7:26 PM Christoph Hellwig <hch@....de> wrote:
>
> On Mon, Aug 19, 2019 at 06:28:30PM -0700, Dan Williams wrote:
> >
> > Previously we would loudly crash if someone passed NULL to
> > devm_request_free_mem_region(), but now it will silently work and the
> > result will leak. Perhaps this wants a:
>
> We'd still instantly crash due to the dev_name dereference, right?

Whoops, yes.