FAILED: patch "[PATCH] phy: rockchip: inno-usb2: Fix a double free bug in" failed to apply to 6.1-stable tree

FAILED: patch "[PATCH] phy: rockchip: inno-usb2: Fix a double free bug in" failed to apply to 6.1-stable tree

[gregkh]

The patch below does not apply to the 6.1-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>.

To reproduce the conflict and resubmit, you may use the following commands:

git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.1.y
git checkout FETCH_HEAD
git cherry-pick -x e07dea3de508cd6950c937cec42de7603190e1ca
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<stable@vger.kernel.org>' --in-reply-to '2026012042-dealt-crudeness-5250@gregkh' --subject-prefix 'PATCH 6.1.y' HEAD^..

Possible dependencies:



thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From e07dea3de508cd6950c937cec42de7603190e1ca Mon Sep 17 00:00:00 2001
From: Wentao Liang <vulab@iscas.ac.cn>
Date: Fri, 9 Jan 2026 15:46:26 +0000
Subject: [PATCH] phy: rockchip: inno-usb2: Fix a double free bug in
 rockchip_usb2phy_probe()

The for_each_available_child_of_node() calls of_node_put() to
release child_np in each success loop. After breaking from the
loop with the child_np has been released, the code will jump to
the put_child label and will call the of_node_put() again if the
devm_request_threaded_irq() fails. These cause a double free bug.

Fix by returning directly to avoid the duplicate of_node_put().

Fixes: ed2b5a8e6b98 ("phy: phy-rockchip-inno-usb2: support muxed interrupts")
Cc: stable@vger.kernel.org
Signed-off-by: Wentao Liang <vulab@iscas.ac.cn>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patch.msgid.link/20260109154626.2452034-1-vulab@iscas.ac.cn
Signed-off-by: Vinod Koul <vkoul@kernel.org>

diff --git a/drivers/phy/rockchip/phy-rockchip-inno-usb2.c b/drivers/phy/rockchip/phy-rockchip-inno-usb2.c
index e5efae7b0135..8f4c08e599aa 100644
--- a/drivers/phy/rockchip/phy-rockchip-inno-usb2.c
+++ b/drivers/phy/rockchip/phy-rockchip-inno-usb2.c
@@ -1495,7 +1495,7 @@ static int rockchip_usb2phy_probe(struct platform_device *pdev)
 						rphy);
 		if (ret) {
 			dev_err_probe(rphy->dev, ret, "failed to request usb2phy irq handle\n");
-			goto put_child;
+			return ret;
 		}
 	}
 

[PATCH 6.1.y 1/3] phy: phy-rockchip-inno-usb2: simplify phy clock handling

[Sasha Levin]

From: Sebastian Reichel <sebastian.reichel@collabora.com>

[ Upstream commit b43511233c6e34b9c0d9a55e41b078d10e7d9ea6 ]

Simplify phyclk handling by using devm_clk_get_optional_enabled to
acquire and enable the optional clock. This also fixes a resource
leak in driver remove path and adds proper error handling.

Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Link: https://lore.kernel.org/r/20230522170324.61349-6-sebastian.reichel@collabora.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Stable-dep-of: e07dea3de508 ("phy: rockchip: inno-usb2: Fix a double free bug in rockchip_usb2phy_probe()")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/phy/rockchip/phy-rockchip-inno-usb2.c | 17 +++++------------
 1 file changed, 5 insertions(+), 12 deletions(-)

diff --git a/drivers/phy/rockchip/phy-rockchip-inno-usb2.c b/drivers/phy/rockchip/phy-rockchip-inno-usb2.c
index a0bc10aa79618..caa5787f09a52 100644
--- a/drivers/phy/rockchip/phy-rockchip-inno-usb2.c
+++ b/drivers/phy/rockchip/phy-rockchip-inno-usb2.c
@@ -1269,18 +1269,16 @@ static int rockchip_usb2phy_probe(struct platform_device *pdev)
 		return -EINVAL;
 	}
 
-	rphy->clk = of_clk_get_by_name(np, "phyclk");
-	if (!IS_ERR(rphy->clk)) {
-		clk_prepare_enable(rphy->clk);
-	} else {
-		dev_info(&pdev->dev, "no phyclk specified\n");
-		rphy->clk = NULL;
+	rphy->clk = devm_clk_get_optional_enabled(dev, "phyclk");
+	if (IS_ERR(rphy->clk)) {
+		return dev_err_probe(&pdev->dev, PTR_ERR(rphy->clk),
+				     "failed to get phyclk\n");
 	}
 
 	ret = rockchip_usb2phy_clk480m_register(rphy);
 	if (ret) {
 		dev_err(dev, "failed to register 480m output clock\n");
-		goto disable_clks;
+		return ret;
 	}
 
 	index = 0;
@@ -1343,11 +1341,6 @@ static int rockchip_usb2phy_probe(struct platform_device *pdev)
 
 put_child:
 	of_node_put(child_np);
-disable_clks:
-	if (rphy->clk) {
-		clk_disable_unprepare(rphy->clk);
-		clk_put(rphy->clk);
-	}
 	return ret;
 }
 
-- 
2.51.0

[PATCH 6.1.y 2/3] phy: phy-rockchip-inno-usb2: Use dev_err_probe() in the probe path

[Sasha Levin]

From: Dragan Simic <dsimic@manjaro.org>

[ Upstream commit 40452520850683f6771094ca218ff206d1fcb022 ]

Improve error handling in the probe path by using function dev_err_probe()
instead of function dev_err(), where appropriate.

Signed-off-by: Dragan Simic <dsimic@manjaro.org>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Link: https://lore.kernel.org/r/d4ccd9fc278fb46ea868406bf77811ee507f0e4e.1725524803.git.dsimic@manjaro.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Stable-dep-of: e07dea3de508 ("phy: rockchip: inno-usb2: Fix a double free bug in rockchip_usb2phy_probe()")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/phy/rockchip/phy-rockchip-inno-usb2.c | 27 +++++++------------
 1 file changed, 10 insertions(+), 17 deletions(-)

diff --git a/drivers/phy/rockchip/phy-rockchip-inno-usb2.c b/drivers/phy/rockchip/phy-rockchip-inno-usb2.c
index caa5787f09a52..03a1d1453c311 100644
--- a/drivers/phy/rockchip/phy-rockchip-inno-usb2.c
+++ b/drivers/phy/rockchip/phy-rockchip-inno-usb2.c
@@ -380,11 +380,9 @@ static int rockchip_usb2phy_extcon_register(struct rockchip_usb2phy *rphy)
 
 	if (of_property_read_bool(node, "extcon")) {
 		edev = extcon_get_edev_by_phandle(rphy->dev, 0);
-		if (IS_ERR(edev)) {
-			if (PTR_ERR(edev) != -EPROBE_DEFER)
-				dev_err(rphy->dev, "Invalid or missing extcon\n");
-			return PTR_ERR(edev);
-		}
+		if (IS_ERR(edev))
+			return dev_err_probe(rphy->dev, PTR_ERR(edev),
+					     "invalid or missing extcon\n");
 	} else {
 		/* Initialize extcon device */
 		edev = devm_extcon_dev_allocate(rphy->dev,
@@ -394,10 +392,9 @@ static int rockchip_usb2phy_extcon_register(struct rockchip_usb2phy *rphy)
 			return -ENOMEM;
 
 		ret = devm_extcon_dev_register(rphy->dev, edev);
-		if (ret) {
-			dev_err(rphy->dev, "failed to register extcon device\n");
-			return ret;
-		}
+		if (ret)
+			return dev_err_probe(rphy->dev, ret,
+					     "failed to register extcon device\n");
 	}
 
 	rphy->edev = edev;
@@ -1276,10 +1273,8 @@ static int rockchip_usb2phy_probe(struct platform_device *pdev)
 	}
 
 	ret = rockchip_usb2phy_clk480m_register(rphy);
-	if (ret) {
-		dev_err(dev, "failed to register 480m output clock\n");
-		return ret;
-	}
+	if (ret)
+		return dev_err_probe(dev, ret, "failed to register 480m output clock\n");
 
 	index = 0;
 	for_each_available_child_of_node(np, child_np) {
@@ -1293,8 +1288,7 @@ static int rockchip_usb2phy_probe(struct platform_device *pdev)
 
 		phy = devm_phy_create(dev, child_np, &rockchip_usb2phy_ops);
 		if (IS_ERR(phy)) {
-			dev_err_probe(dev, PTR_ERR(phy), "failed to create phy\n");
-			ret = PTR_ERR(phy);
+			ret = dev_err_probe(dev, PTR_ERR(phy), "failed to create phy\n");
 			goto put_child;
 		}
 
@@ -1331,8 +1325,7 @@ static int rockchip_usb2phy_probe(struct platform_device *pdev)
 						"rockchip_usb2phy",
 						rphy);
 		if (ret) {
-			dev_err(rphy->dev,
-				"failed to request usb2phy irq handle\n");
+			dev_err_probe(rphy->dev, ret, "failed to request usb2phy irq handle\n");
 			goto put_child;
 		}
 	}
-- 
2.51.0

[PATCH 6.1.y 3/3] phy: rockchip: inno-usb2: Fix a double free bug in rockchip_usb2phy_probe()

[Sasha Levin]

From: Wentao Liang <vulab@iscas.ac.cn>

[ Upstream commit e07dea3de508cd6950c937cec42de7603190e1ca ]

The for_each_available_child_of_node() calls of_node_put() to
release child_np in each success loop. After breaking from the
loop with the child_np has been released, the code will jump to
the put_child label and will call the of_node_put() again if the
devm_request_threaded_irq() fails. These cause a double free bug.

Fix by returning directly to avoid the duplicate of_node_put().

Fixes: ed2b5a8e6b98 ("phy: phy-rockchip-inno-usb2: support muxed interrupts")
Cc: stable@vger.kernel.org
Signed-off-by: Wentao Liang <vulab@iscas.ac.cn>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patch.msgid.link/20260109154626.2452034-1-vulab@iscas.ac.cn
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/phy/rockchip/phy-rockchip-inno-usb2.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/phy/rockchip/phy-rockchip-inno-usb2.c b/drivers/phy/rockchip/phy-rockchip-inno-usb2.c
index 03a1d1453c311..3a7e825a81b35 100644
--- a/drivers/phy/rockchip/phy-rockchip-inno-usb2.c
+++ b/drivers/phy/rockchip/phy-rockchip-inno-usb2.c
@@ -1326,7 +1326,7 @@ static int rockchip_usb2phy_probe(struct platform_device *pdev)
 						rphy);
 		if (ret) {
 			dev_err_probe(rphy->dev, ret, "failed to request usb2phy irq handle\n");
-			goto put_child;
+			return ret;
 		}
 	}
 
-- 
2.51.0