From 1cd17f7f0def31e3695501c4f86cd3faf8489840 Mon Sep 17 00:00:00 2001

From: Emiliano Ingrassia <ingrassia@epigenesys.com>

Date: Wed, 27 Nov 2019 17:03:55 +0100

Subject: [PATCH] usb: core: urb: fix URB structure initialization function

Git-commit: 1cd17f7f0def31e3695501c4f86cd3faf8489840

Patch-mainline: v5.5-rc2

References: bsc#1051510

Explicitly initialize URB structure urb_list field in usb_init_urb().

This field can be potentially accessed uninitialized and its

initialization is coherent with the usage of list_del_init() in

usb_hcd_unlink_urb_from_ep() and usb_giveback_urb_bh() and its

explicit initialization in usb_hcd_submit_urb() error path.

Signed-off-by: Emiliano Ingrassia <ingrassia@epigenesys.com>

Cc: stable <stable@vger.kernel.org>

Link: https://lore.kernel.org/r/20191127160355.GA27196@ingrassia.epigenesys.com

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Acked-by: Takashi Iwai <tiwai@suse.de>

---

 drivers/usb/core/urb.c | 1 +

 1 file changed, 1 insertion(+)

diff --git a/drivers/usb/core/urb.c b/drivers/usb/core/urb.c

index 0eab79f82ce4..da923ec17612 100644

--- a/drivers/usb/core/urb.c

+++ b/drivers/usb/core/urb.c

@@ -45,6 +45,7 @@ void usb_init_urb(struct urb *urb)

 	if (urb) {

 		memset(urb, 0, sizeof(*urb));

 		kref_init(&urb->kref);

+		INIT_LIST_HEAD(&urb->urb_list);

 		INIT_LIST_HEAD(&urb->anchor_list);

 	}

 }

-- 

2.16.4