Patch "USB: EHCI: declare hostpc register as zero-length array" has been added to the 3.14-stable tree

This is a note to let you know that I've just added the patch titled

USB: EHCI: declare hostpc register as zero-length array

to the 3.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
usb-ehci-declare-hostpc-register-as-zero-length-array.patch
and it can be found in the queue-3.14 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Alan Stern <[email protected]>
Date: Thu, 23 Jun 2016 14:54:37 -0400
Subject: USB: EHCI: declare hostpc register as zero-length array

From: Alan Stern <[email protected]>

commit 7e8b3dfef16375dbfeb1f36a83eb9f27117c51fd upstream.

The HOSTPC extension registers found in some EHCI implementations form a variable-length array, with one element for each port. Therefore the hostpc field in struct ehci_regs should be declared as a zero-length array, not a single-element array.

This fixes a problem reported by UBSAN.

---
 include/linux/usb/ehci_def.h |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

@@ -178,11 +178,11 @@ struct ehci_regs {
  * PORTSCx
  */
 	/* HOSTPC: offset 0x84 */
-	u32		hostpc[1];	/* HOSTPC extension */
+	u32		hostpc[0];	/* HOSTPC extension */
 #define HOSTPC_PHCD	(1<<22)		/* Phy clock disable */
 #define HOSTPC_PSPD	(3<<25)		/* Port speed detection */
 
-	u32		reserved5[16];
+	u32		reserved5[17];
 
 	/* USBMODE_EX: offset 0xc8 */
 	u32		usbmode_ex;	/* USB Device mode extension */

Patches currently in stable-queue which might be from [email protected] are

queue-3.14/usb-ehci-declare-hostpc-register-as-zero-length-array.patch