linux-kernel - Re: [PATCH 6.1&6.6 V3 3/3] sign-file,extract-cert: use pkcs11 provider for OPENSSL MAJOR >= 3

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Message-ID: <CAAhV-H5A+GL0B7Mkv67W1XLmMeh4v0GrHfbq=HHa5WPixvvVpg@mail.gmail.com>
Date: Tue, 22 Apr 2025 20:30:39 +0800
From: Huacai Chen <chenhuacai@...nel.org>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: Jan Stancek <jstancek@...hat.com>, Huacai Chen <chenhuacai@...ngson.cn>, 
	Sasha Levin <sashal@...nel.org>, Xuerui Wang <kernel@...0n.name>, stable@...r.kernel.org, 
	David Howells <dhowells@...hat.com>, David Woodhouse <dwmw2@...radead.org>, 
	Jarkko Sakkinen <jarkko@...nel.org>, keyrings@...r.kernel.org, linux-kernel@...r.kernel.org, 
	loongarch@...ts.linux.dev, R Nageswara Sastry <rnsastry@...ux.ibm.com>, 
	Neal Gompa <neal@...pa.dev>
Subject: Re: [PATCH 6.1&6.6 V3 3/3] sign-file,extract-cert: use pkcs11
 provider for OPENSSL MAJOR >= 3

On Tue, Apr 22, 2025 at 3:53 PM Greg Kroah-Hartman
<gregkh@...uxfoundation.org> wrote:
>
> On Mon, Apr 14, 2025 at 09:52:35PM +0800, Huacai Chen wrote:
> > Hi, Greg and Sasha,
> >
> > On Sun, Mar 30, 2025 at 9:40 PM Jan Stancek <jstancek@...hat.com> wrote:
> > >
> > > On Sun, Mar 30, 2025 at 3:08 PM Huacai Chen <chenhuacai@...nel.org> wrote:
> > > >
> > > > On Thu, Mar 20, 2025 at 12:53 AM Jan Stancek <jstancek@...hat.com> wrote:
> > > > >
> > > > > On Wed, Mar 19, 2025 at 5:26 PM Greg Kroah-Hartman
> > > > > <gregkh@...uxfoundation.org> wrote:
> > > > > >
> > > > > > On Wed, Mar 19, 2025 at 03:44:19PM +0100, Jan Stancek wrote:
> > > > > > > On Wed, Mar 19, 2025 at 07:13:13AM -0700, Greg Kroah-Hartman wrote:
> > > > > > > > On Wed, Mar 19, 2025 at 02:40:31PM +0800, Huacai Chen wrote:
> > > > > > > > > From: Jan Stancek <jstancek@...hat.com>
> > > > > > > > >
> > > > > > > > > commit 558bdc45dfb2669e1741384a0c80be9c82fa052c upstream.
> > > > > > > > >
> > > > > > > > > ENGINE API has been deprecated since OpenSSL version 3.0 [1].
> > > > > > > > > Distros have started dropping support from headers and in future
> > > > > > > > > it will likely disappear also from library.
> > > > > > > > >
> > > > > > > > > It has been superseded by the PROVIDER API, so use it instead
> > > > > > > > > for OPENSSL MAJOR >= 3.
> > > > > > > > >
> > > > > > > > > [1] https://github.com/openssl/openssl/blob/master/README-ENGINES.md
> > > > > > > > >
> > > > > > > > > [jarkko: fixed up alignment issues reported by checkpatch.pl --strict]
> > > > > > > > >
> > > > > > > > > Signed-off-by: Jan Stancek <jstancek@...hat.com>
> > > > > > > > > Reviewed-by: Jarkko Sakkinen <jarkko@...nel.org>
> > > > > > > > > Tested-by: R Nageswara Sastry <rnsastry@...ux.ibm.com>
> > > > > > > > > Reviewed-by: Neal Gompa <neal@...pa.dev>
> > > > > > > > > Signed-off-by: Jarkko Sakkinen <jarkko@...nel.org>
> > > > > > > > > Signed-off-by: Huacai Chen <chenhuacai@...ngson.cn>
> > > > > > > > > ---
> > > > > > > > >  certs/extract-cert.c | 103 ++++++++++++++++++++++++++++++-------------
> > > > > > > > >  scripts/sign-file.c  |  93 ++++++++++++++++++++++++++------------
> > > > > > > > >  2 files changed, 138 insertions(+), 58 deletions(-)
> > > > > > > >
> > > > > > > > This seems to differ from what is upstream by a lot, please document
> > > > > > > > what you changed from it and why when you resend this series again.
> > > > > > >
> > > > > > > Hunks are arranged differently, but code appears to be identical.
> > > > > > > When I apply the series to v6.6.83 and compare with upstream I get:
> > > > > >
> > > > > > If so, why is the diffstat different?  Also why are the hunks arranged
> > > > > > differently,
> > > > >
> > > > > He appears to be using "--diff-algorithm=minimal", while you probably
> > > > > patience or histogram.
> > > > Hi, Jan,
> > > >
> > > > I tried --diff-algorithm=minimal/patience/histogram from the upstream
> > > > commit, they all give the same result as this patch. But Sasha said
> > > > the upstream diffstat is different, so how does he generate the patch?
> > >
> > > Hi,
> > >
> > > I don't know how he generates the patch, but with git-2.43 I get noticable
> > > different patches and diff stats for minimal vs. histogram. "minimal" one
> > > matches your v3 patch. I don't know details of Greg's workflow, just offered
> > > one possible explanation that would allow this series to progress further.
> > >
> > > $ git format-patch -1 --stdout --diff-algorithm=minimal 558bdc45dfb2 |
> > > grep -A3 -m1 -- "---"
> > Could you please tell me how you generate patches? I always get the
> > same result from the upstream repo.a
>
> A simple 'git show' is all I use.  Try it again and submit what you have
> if you can't get anything different here.
>
> Note, my algorithm is set to "algorithm = histogram" in my .gitconfig
> file.
OK, it seems I can generate the correct patches as yours now, I will
send V4 later.

Huacai

>
> thanks,
>
> greg k-h