* FAILED: patch "[PATCH] net: bcmgenet: fix OF child-node lookup" failed to apply to 4.9-stable tree
@ 2018-11-11 14:27 gregkh
2018-11-27 15:15 ` Johan Hovold
0 siblings, 1 reply; 3+ messages in thread
From: gregkh @ 2018-11-11 14:27 UTC (permalink / raw)
To: johan, davem, f.fainelli, robh, stable; +Cc: stable
The patch below does not apply to the 4.9-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable@vger.kernel.org>.
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
>From d397dbe606120a1ea1b11b0020c3f7a3852da5ac Mon Sep 17 00:00:00 2001
From: Johan Hovold <johan@kernel.org>
Date: Mon, 27 Aug 2018 10:21:50 +0200
Subject: [PATCH] net: bcmgenet: fix OF child-node lookup
Use the new of_get_compatible_child() helper to lookup the mdio child
node instead of using of_find_compatible_node(), which searches the
entire tree from a given start node and thus can return an unrelated
(i.e. non-child) node.
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).
Fixes: aa09677cba42 ("net: bcmgenet: add MDIO routines")
Cc: stable <stable@vger.kernel.org> # 3.15
Cc: David S. Miller <davem@davemloft.net>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Rob Herring <robh@kernel.org>
diff --git a/drivers/net/ethernet/broadcom/genet/bcmmii.c b/drivers/net/ethernet/broadcom/genet/bcmmii.c
index 5333274a283c..87fc65560ceb 100644
--- a/drivers/net/ethernet/broadcom/genet/bcmmii.c
+++ b/drivers/net/ethernet/broadcom/genet/bcmmii.c
@@ -333,7 +333,7 @@ static struct device_node *bcmgenet_mii_of_find_mdio(struct bcmgenet_priv *priv)
if (!compat)
return NULL;
- priv->mdio_dn = of_find_compatible_node(dn, NULL, compat);
+ priv->mdio_dn = of_get_compatible_child(dn, compat);
kfree(compat);
if (!priv->mdio_dn) {
dev_err(kdev, "unable to find MDIO bus node\n");
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: FAILED: patch "[PATCH] net: bcmgenet: fix OF child-node lookup" failed to apply to 4.9-stable tree
2018-11-11 14:27 FAILED: patch "[PATCH] net: bcmgenet: fix OF child-node lookup" failed to apply to 4.9-stable tree gregkh
@ 2018-11-27 15:15 ` Johan Hovold
2018-11-28 15:10 ` Sasha Levin
0 siblings, 1 reply; 3+ messages in thread
From: Johan Hovold @ 2018-11-27 15:15 UTC (permalink / raw)
To: gregkh; +Cc: johan, davem, f.fainelli, robh, stable
On Sun, Nov 11, 2018 at 06:27:18AM -0800, Greg Kroah-Hartman wrote:
>
> The patch below does not apply to the 4.9-stable tree.
> If someone wants it applied there, or to any other stable or longterm
> tree, then please email the backport, including the original git commit
> id to <stable@vger.kernel.org>.
This one also depends on
36156f9241cb ("of: add helper to lookup compatible child node")
Johan
> ------------------ original commit in Linus's tree ------------------
>
> From d397dbe606120a1ea1b11b0020c3f7a3852da5ac Mon Sep 17 00:00:00 2001
> From: Johan Hovold <johan@kernel.org>
> Date: Mon, 27 Aug 2018 10:21:50 +0200
> Subject: [PATCH] net: bcmgenet: fix OF child-node lookup
>
> Use the new of_get_compatible_child() helper to lookup the mdio child
> node instead of using of_find_compatible_node(), which searches the
> entire tree from a given start node and thus can return an unrelated
> (i.e. non-child) node.
>
> 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).
>
> Fixes: aa09677cba42 ("net: bcmgenet: add MDIO routines")
> Cc: stable <stable@vger.kernel.org> # 3.15
> Cc: David S. Miller <davem@davemloft.net>
> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
> Signed-off-by: Johan Hovold <johan@kernel.org>
> Signed-off-by: Rob Herring <robh@kernel.org>
>
> diff --git a/drivers/net/ethernet/broadcom/genet/bcmmii.c b/drivers/net/ethernet/broadcom/genet/bcmmii.c
> index 5333274a283c..87fc65560ceb 100644
> --- a/drivers/net/ethernet/broadcom/genet/bcmmii.c
> +++ b/drivers/net/ethernet/broadcom/genet/bcmmii.c
> @@ -333,7 +333,7 @@ static struct device_node *bcmgenet_mii_of_find_mdio(struct bcmgenet_priv *priv)
> if (!compat)
> return NULL;
>
> - priv->mdio_dn = of_find_compatible_node(dn, NULL, compat);
> + priv->mdio_dn = of_get_compatible_child(dn, compat);
> kfree(compat);
> if (!priv->mdio_dn) {
> dev_err(kdev, "unable to find MDIO bus node\n");
>
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: FAILED: patch "[PATCH] net: bcmgenet: fix OF child-node lookup" failed to apply to 4.9-stable tree
2018-11-27 15:15 ` Johan Hovold
@ 2018-11-28 15:10 ` Sasha Levin
0 siblings, 0 replies; 3+ messages in thread
From: Sasha Levin @ 2018-11-28 15:10 UTC (permalink / raw)
To: Johan Hovold; +Cc: gregkh, davem, f.fainelli, robh, stable
On Tue, Nov 27, 2018 at 07:15:48AM -0800, Johan Hovold wrote:
>On Sun, Nov 11, 2018 at 06:27:18AM -0800, Greg Kroah-Hartman wrote:
>>
>> The patch below does not apply to the 4.9-stable tree.
>> If someone wants it applied there, or to any other stable or longterm
>> tree, then please email the backport, including the original git commit
>> id to <stable@vger.kernel.org>.
>
>This one also depends on
>
> 36156f9241cb ("of: add helper to lookup compatible child node")
Now queued, thank you.
--
Thanks,
Sasha
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2018-11-29 2:12 UTC | newest]
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2018-11-11 14:27 FAILED: patch "[PATCH] net: bcmgenet: fix OF child-node lookup" failed to apply to 4.9-stable tree gregkh
2018-11-27 15:15 ` Johan Hovold
2018-11-28 15:10 ` Sasha Levin
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