linux-kernel - Re: [PATCH 2/8] pstore: Do not use crash buffer for decompression

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Message-ID: <20181120214303.GA183827@google.com>
Date:   Tue, 20 Nov 2018 13:43:03 -0800
From:   Joel Fernandes <joel@...lfernandes.org>
To:     Kees Cook <keescook@...omium.org>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Anton Vorontsov <anton@...msg.org>,
        Colin Cross <ccross@...roid.com>,
        Tony Luck <tony.luck@...el.com>
Subject: Re: [PATCH 2/8] pstore: Do not use crash buffer for decompression

On Wed, Nov 14, 2018 at 01:56:09AM -0600, Kees Cook wrote:
> On Fri, Nov 2, 2018 at 1:24 PM, Joel Fernandes <joel@...lfernandes.org> wrote:
> > On Thu, Nov 01, 2018 at 04:51:54PM -0700, Kees Cook wrote:
> >>  static void decompress_record(struct pstore_record *record)
> >>  {
> >> +     int ret;
> >>       int unzipped_len;
> >
> > nit: We could get rid of the unzipped_len variable now I think.
> 
> I didn't follow this -- it gets used quite a bit. I don't see a clean
> way to remove it?

You are right. Sorry I missed that crpyto_comp_decompress actually uses it.

thanks,

 - Joel