linux-kernel - Re: [PATCH v3] spi: fsl-dspi: fix NULL pointer dereference

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Message-ID: <a98840cfad9ab13dfbad71bc100bc339@walle.cc>
Date:   Fri, 09 Oct 2020 21:20:26 +0200
From:   Michael Walle <michael@...le.cc>
To:     Naresh Kamboju <naresh.kamboju@...aro.org>
Cc:     linux-spi@...r.kernel.org,
        open list <linux-kernel@...r.kernel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Mark Brown <broonie@...nel.org>,
        Vladimir Oltean <olteanv@...il.com>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        lkft-triage@...ts.linaro.org
Subject: Re: [PATCH v3] spi: fsl-dspi: fix NULL pointer dereference

Am 2020-10-09 13:01, schrieb Naresh Kamboju:
> On Mon, 28 Sep 2020 at 14:26, Michael Walle <michael@...le.cc> wrote:
>> 
>> Since commit 530b5affc675 ("spi: fsl-dspi: fix use-after-free in 
>> remove
>> path") this driver causes a kernel oops:
> 
> FYI,
> This reported issue is now happening on Linus's master 5.9.0-rc8 on 
> arm64
> nxp-ls2088 devices.

Yep, Kontron sl28 is also broken on the latest 5.9-rc8. Somehow
   commit 530b5affc675 ("spi: fsl-dspi: fix use-after-free in remove 
path")
made it into 5.9-rc7 but this fix didn't.

-michael