linux-kernel - [PATCH 1/2] usb: core: Don't use %pK through printk

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Message-Id: <20250217-restricted-pointers-usb-v1-1-78da55158832@linutronix.de>
Date: Mon, 17 Feb 2025 14:20:51 +0100
From: Thomas Weißschuh <thomas.weissschuh@...utronix.de>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
 Patrice Chotard <patrice.chotard@...s.st.com>, 
 Thinh Nguyen <Thinh.Nguyen@...opsys.com>
Cc: linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org, 
 linux-arm-kernel@...ts.infradead.org, 
 Thomas Weißschuh <thomas.weissschuh@...utronix.de>
Subject: [PATCH 1/2] usb: core: Don't use %pK through printk

Restricted pointers ("%pK") are not meant to be used through printk().
It can unintentionally expose security sensitive, raw pointer values.

Use regular pointer formatting instead.

Link: https://lore.kernel.org/lkml/20250113171731-dc10e3c1-da64-4af0-b767-7c7070468023@linutronix.de/
Signed-off-by: Thomas Weißschuh <thomas.weissschuh@...utronix.de>
---
 drivers/usb/core/hcd.c | 4 ++--
 drivers/usb/core/urb.c | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c
index a75cf1f6d741cf5827b9c4deca3b63013aff6cfe..46026b331267ade29839393b2fb5c0c42e34ab84 100644
--- a/drivers/usb/core/hcd.c
+++ b/drivers/usb/core/hcd.c
@@ -1609,7 +1609,7 @@ int usb_hcd_unlink_urb (struct urb *urb, int status)
 		if (retval == 0)
 			retval = -EINPROGRESS;
 		else if (retval != -EIDRM && retval != -EBUSY)
-			dev_dbg(&udev->dev, "hcd_unlink_urb %pK fail %d\n",
+			dev_dbg(&udev->dev, "hcd_unlink_urb %p fail %d\n",
 					urb, retval);
 		usb_put_dev(udev);
 	}
@@ -1786,7 +1786,7 @@ void usb_hcd_flush_endpoint(struct usb_device *udev,
 		/* kick hcd */
 		unlink1(hcd, urb, -ESHUTDOWN);
 		dev_dbg (hcd->self.controller,
-			"shutdown urb %pK ep%d%s-%s\n",
+			"shutdown urb %p ep%d%s-%s\n",
 			urb, usb_endpoint_num(&ep->desc),
 			is_in ? "in" : "out",
 			usb_ep_type_string(usb_endpoint_type(&ep->desc)));
diff --git a/drivers/usb/core/urb.c b/drivers/usb/core/urb.c
index 7576920e2d5a3e6c0dfd8bee8fce9d09a55c195c..5e52a35486afbe58bdffd3dfc1eb5964a9471ade 100644
--- a/drivers/usb/core/urb.c
+++ b/drivers/usb/core/urb.c
@@ -376,7 +376,7 @@ int usb_submit_urb(struct urb *urb, gfp_t mem_flags)
 	if (!urb || !urb->complete)
 		return -EINVAL;
 	if (urb->hcpriv) {
-		WARN_ONCE(1, "URB %pK submitted while active\n", urb);
+		WARN_ONCE(1, "URB %p submitted while active\n", urb);
 		return -EBUSY;
 	}
 

-- 
2.48.1