From: Gilad Ben-Yossef <gilad@benyossef.com>
To: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Herbert Xu <herbert@gondor.apana.org.au>,
"David S. Miller" <davem@davemloft.net>,
Ofir Drang <ofir.drang@arm.com>, Hadar Gat <hadar.gat@arm.com>,
Linux Crypto Mailing List <linux-crypto@vger.kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Linux-Renesas <linux-renesas-soc@vger.kernel.org>,
Christoph Hellwig <hch@lst.de>
Subject: Re: [PATCH 00/11] crypto: ccree - fixes and cleanups
Date: Sun, 26 Jan 2020 15:37:58 +0200 [thread overview]
Message-ID: <CAOtvUMeiaFzL1E49Vy5+MY96_g=91eW3AnkDG1+1ZRoTekJYew@mail.gmail.com> (raw)
In-Reply-To: <CAMuHMdVPQsb=NrQ=N+S1TrD_CuJ=hnaYS+OLE9SnyWy43dC3GQ@mail.gmail.com>
On Thu, Jan 23, 2020 at 10:09 PM Geert Uytterhoeven
<geert@linux-m68k.org> wrote:
>
> Hi Gilad,
>
> On Thu, Jan 23, 2020 at 7:19 PM Gilad Ben-Yossef <gilad@benyossef.com> wrote:
> > On Thu, Jan 23, 2020 at 5:46 PM Geert Uytterhoeven <geert@linux-m68k.org> wrote:
> > > On Thu, Jan 23, 2020 at 12:44 PM Gilad Ben-Yossef <gilad@benyossef.com> wrote:
> > > > On Wed, Jan 22, 2020 at 6:51 PM Geert Uytterhoeven <geert@linux-m68k.org> wrote:
> > > > > On Thu, Jan 16, 2020 at 11:25 AM Gilad Ben-Yossef <gilad@benyossef.com> wrote:
> > > > > > A bunch of fixes and code cleanups for the ccree driver
> > > > >
> > > > > Thank you!
> > > > >
> > > > > I wanted to give this a try, but it looks like CCREE is no longer working
> > > > > on R-Car H3, both with/without this series.
> > > > >
> > > > > E.g. with renesas-devel[*] and renesas_defconfig +
> > > > > CONFIG_CRYPTO_MANAGER_DISABLE_TESTS=n, I get the following crash:
> > > >
> > > > Thank you for the bug report Geert!
> > > >
> > > > My R-Car board is on loan at the moment to another project. I didn't
> > > > see this on our internal test board.
> > > > I will track down my R-Car board and reproduce this - hopefully
> > > > beginning of next week and will get back to you.
> > >
> > > In the mean time, I've bisected this failure to commit cdfee5623290bc89
> > > ("driver core: initialize a default DMA mask for platform device").
> > > However, this looks like a red herring, and seems to be only an exposer
> > > of an underlying problem.
> >
> > Thank you for continue digging into this.
> >
> > > What's happening is that cc_map_aead_request() receives a request with
> > > cryptlen = 0. Due to DRV_CRYPTO_DIRECTION_ENCRYPT, the length to map is
> > > increased by 8. This seems to works fine if there is sufficient space
> > > in the request's scatterlist. However, if the scatterlist has only a
> > > single entry of size zero, cc_map_sg() tries to map a zero-length DMA
> > > buffer, and the BUG)() is triggered.
> > >
> >
> > OK, this does rings a bell - can you verify please if
> > CONFIG_CRYPTO_MANAGER_EXTRA_TESTS is enabled and if it does can you
> > see if it happens if it is turned off?
>
> No, I didn't have that option enabled.
OK, I still did not get reunited with my R-Cat board, but I think I
have a direction.
I'm about to send an RFC patch which while probably does not address
the root cause
will stop the crash if the issue is what I think it is and so will let
me know what you are
seeing is what I think you are seeing.
I'd be delighted if you can give it a spin...
Thanks,
Gilad
prev parent reply other threads:[~2020-01-26 13:38 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-16 10:14 [PATCH 00/11] crypto: ccree - fixes and cleanups Gilad Ben-Yossef
2020-01-16 10:14 ` [PATCH 01/11] crypto: ccree: fix typos in error msgs Gilad Ben-Yossef
2020-01-16 10:14 ` [PATCH 02/11] crypto: ccree: fix typo in comment Gilad Ben-Yossef
2020-01-16 10:14 ` [PATCH 03/11] crypto: ccree - fix AEAD decrypt auth fail Gilad Ben-Yossef
2020-01-16 10:14 ` [PATCH 04/11] crypto: ccree - turn errors to debug msgs Gilad Ben-Yossef
2020-01-16 10:14 ` [PATCH 05/11] crypto: ccree - fix pm wrongful error reporting Gilad Ben-Yossef
2020-01-16 10:14 ` [PATCH 06/11] crypto: ccree - cc_do_send_request() is void func Gilad Ben-Yossef
2020-01-16 10:14 ` [PATCH 07/11] crypto: ccree - fix FDE descriptor sequence Gilad Ben-Yossef
2020-01-16 10:14 ` [PATCH 08/11] crypto: ccree - fix PM race condition Gilad Ben-Yossef
2020-01-16 10:14 ` [PATCH 09/11] crypto: ccree - split overloaded usage of irq field Gilad Ben-Yossef
2020-01-16 10:14 ` [PATCH 10/11] crypto: ccree - make cc_pm_put_suspend() void Gilad Ben-Yossef
2020-01-16 10:14 ` [PATCH 11/11] crypto: ccree - erase unneeded inline funcs Gilad Ben-Yossef
2020-01-22 10:13 ` [PATCH 00/11] crypto: ccree - fixes and cleanups Herbert Xu
2020-01-22 16:51 ` Geert Uytterhoeven
2020-01-23 11:44 ` Gilad Ben-Yossef
2020-01-23 15:46 ` Geert Uytterhoeven
2020-01-23 18:18 ` Gilad Ben-Yossef
2020-01-23 20:08 ` Geert Uytterhoeven
2020-01-26 13:37 ` Gilad Ben-Yossef [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to='CAOtvUMeiaFzL1E49Vy5+MY96_g=91eW3AnkDG1+1ZRoTekJYew@mail.gmail.com' \
--to=gilad@benyossef.com \
--cc=davem@davemloft.net \
--cc=geert@linux-m68k.org \
--cc=hadar.gat@arm.com \
--cc=hch@lst.de \
--cc=herbert@gondor.apana.org.au \
--cc=linux-crypto@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-renesas-soc@vger.kernel.org \
--cc=ofir.drang@arm.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).