From: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
To: johan@kernel.org
Cc: robh+dt@kernel.org, gregkh@linuxfoundation.org,
frowand.list@gmail.com, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org, stable@vger.kernel.org,
carlo@endlessm.com, ulf.hansson@linaro.org
Subject: Re: [PATCH 4/9] mmc: meson-mx-sdio: fix OF child-node lookup
Date: Thu, 23 Aug 2018 20:50:23 +0200 [thread overview]
Message-ID: <CAFBinCAKNUA5_fz4bXqj-aCaDEHk--Ax5GXJt+nzVKSjbVHxLg@mail.gmail.com> (raw)
In-Reply-To: <20180822105547.9634-5-johan@kernel.org>
Hi Johan,
On Wed, Aug 22, 2018 at 12:57 PM Johan Hovold <johan@kernel.org> wrote:
>
> Use the new of_get_compatible_child() helper to lookup the slot child
> node instead of using of_find_compatible_node(), which searches the
> entire tree and thus can return an unrelated (i.e. non-child) node.
that new helper is much appreciated, thank you!
> This also addresses a potential use-after-free (e.g. after probe
> deferral) as the tree-wide helper drops a reference to its first
> argument (i.e. the node of the device being probed).
>
> While at it, also fix up the related slot-node reference leak.
not sure why both issues went unnoticed so far - good that they're now
both fixed. thank you!
> Fixes: ed80a13bb4c4 ("mmc: meson-mx-sdio: Add a driver for the Amlogic Meson8 and Meson8b SoCs")
> Cc: stable <stable@vger.kernel.org> # 4.15
backporting only works if the patch introducing
of_get_compatible_child is also backported
do we have to inform Greg somehow?
> Cc: Carlo Caione <carlo@endlessm.com>
> Cc: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
> Cc: Ulf Hansson <ulf.hansson@linaro.org>
> Signed-off-by: Johan Hovold <johan@kernel.org>
Acked-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Regards
Martin
next prev parent reply other threads:[~2018-08-23 18:50 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-22 10:55 [PATCH 0/9] of: fix compatible-child-node lookups Johan Hovold
2018-08-22 10:55 ` [PATCH 1/9] of: add helper to lookup compatible child node Johan Hovold
2018-08-23 3:17 ` kbuild test robot
2018-08-23 7:39 ` Johan Hovold
2018-08-22 10:55 ` [PATCH 2/9] drm/mediatek: fix OF sibling-node lookup Johan Hovold
2018-08-22 10:55 ` [PATCH 3/9] drm/msm: fix OF child-node lookup Johan Hovold
2018-08-22 14:41 ` Rob Herring
2018-08-22 10:55 ` [PATCH 4/9] mmc: meson-mx-sdio: " Johan Hovold
2018-08-23 18:50 ` Martin Blumenstingl [this message]
2018-08-24 6:41 ` Johan Hovold
2018-08-22 10:55 ` [PATCH 5/9] mtd: nand: atmel: " Johan Hovold
2018-08-22 10:55 ` [PATCH 6/9] net: bcmgenet: " Johan Hovold
2018-08-22 10:55 ` [PATCH 7/9] net: stmmac: dwmac-sun8i: " Johan Hovold
2018-08-22 10:55 ` [PATCH 8/9] NFC: nfcmrvl_uart: " Johan Hovold
2018-08-22 10:55 ` [PATCH 9/9] power: supply: twl4030-charger: fix OF sibling-node lookup Johan Hovold
2018-08-22 21:36 ` Sebastian Reichel
2018-08-23 7:40 ` Johan Hovold
2018-08-22 14:32 ` [PATCH 0/9] of: fix compatible-child-node lookups Rob Herring
2018-08-22 14:46 ` Johan Hovold
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