From: Emiliano Ingrassia <ingrassia@epigenesys.com>
Date: Wed, 27 Nov 2019 16:03:55 +0000 (+0100)
Subject: usb: core: urb: fix URB structure initialization function
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=d262c1a4494341832dceedb15260e78802be8e17;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

usb: core: urb: fix URB structure initialization function

commit 1cd17f7f0def31e3695501c4f86cd3faf8489840 upstream.

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>
---

diff --git a/drivers/usb/core/urb.c b/drivers/usb/core/urb.c
index 5133ab965229..7b81bcfa19cb 100644
--- a/drivers/usb/core/urb.c
+++ b/drivers/usb/core/urb.c
@@ -40,6 +40,7 @@ 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);
 	}
 }