4.4-stable review patch. If anyone has any objections, please let me know.
------------------
From: Shuah Khan <shuahkh@xxxxxxxxxxxxxxx>
commit 009f41aed4b3e11e6dc1e3c07377a10c20f1a5ed upstream.
Keep usbip_device sockfd state in sync with tcp_socket. When tcp_socket
is reset to null, reset sockfd to -1 to keep it in sync.
Signed-off-by: Shuah Khan <shuahkh@xxxxxxxxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/usb/usbip/stub_dev.c | 3 +++
drivers/usb/usbip/vhci_hcd.c | 2 ++
2 files changed, 5 insertions(+)
--- a/drivers/usb/usbip/stub_dev.c
+++ b/drivers/usb/usbip/stub_dev.c
@@ -87,6 +87,7 @@ static ssize_t store_sockfd(struct devic
goto err;
sdev->ud.tcp_socket = socket;
+ sdev->ud.sockfd = sockfd;
spin_unlock_irq(&sdev->ud.lock);
@@ -186,6 +187,7 @@ static void stub_shutdown_connection(str
if (ud->tcp_socket) {
sockfd_put(ud->tcp_socket);
ud->tcp_socket = NULL;
+ ud->sockfd = -1;
}
/* 3. free used data */
@@ -280,6 +282,7 @@ static struct stub_device *stub_device_a
sdev->ud.status = SDEV_ST_AVAILABLE;
spin_lock_init(&sdev->ud.lock);
sdev->ud.tcp_socket = NULL;
+ sdev->ud.sockfd = -1;
INIT_LIST_HEAD(&sdev->priv_init);
INIT_LIST_HEAD(&sdev->priv_tx);
--- a/drivers/usb/usbip/vhci_hcd.c
+++ b/drivers/usb/usbip/vhci_hcd.c
@@ -797,6 +797,7 @@ static void vhci_shutdown_connection(str
if (vdev->ud.tcp_socket) {
sockfd_put(vdev->ud.tcp_socket);
vdev->ud.tcp_socket = NULL;
+ vdev->ud.sockfd = -1;
}
pr_info("release socket\n");
@@ -844,6 +845,7 @@ static void vhci_device_reset(struct usb
if (ud->tcp_socket) {
sockfd_put(ud->tcp_socket);
ud->tcp_socket = NULL;
+ ud->sockfd = -1;
}
ud->status = VDEV_ST_NULL;