[PATCH 4.19 218/425] usbip: vudc: fix missing unlock on error in usbip_sockfd_store()

[Greg Kroah-Hartman]

From: Ye Bin <yebin10@xxxxxxxxxx>

[ Upstream commit 1d08ed588c6a85a35a24c82eb4cf0807ec2b366a ]

Add the missing unlock before return from function usbip_sockfd_store()
in the error handling case.

Fixes: bd8b82042269 ("usbip: vudc synchronize sysfs code paths")
Reported-by: Hulk Robot <hulkci@xxxxxxxxxx>
Acked-by: Shuah Khan <skhan@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Ye Bin <yebin10@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20210408112305.1022247-1-yebin10@xxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/usb/usbip/vudc_sysfs.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/usb/usbip/vudc_sysfs.c b/drivers/usb/usbip/vudc_sysfs.c
index de2babadd146..7b1437a51304 100644
--- a/drivers/usb/usbip/vudc_sysfs.c
+++ b/drivers/usb/usbip/vudc_sysfs.c
@@ -157,12 +157,14 @@ static ssize_t usbip_sockfd_store(struct device *dev,
 		tcp_rx = kthread_create(&v_rx_loop, &udc->ud, "vudc_rx");
 		if (IS_ERR(tcp_rx)) {
 			sockfd_put(socket);
+			mutex_unlock(&udc->ud.sysfs_lock);
 			return -EINVAL;
 		}
 		tcp_tx = kthread_create(&v_tx_loop, &udc->ud, "vudc_tx");
 		if (IS_ERR(tcp_tx)) {
 			kthread_stop(tcp_rx);
 			sockfd_put(socket);
+			mutex_unlock(&udc->ud.sysfs_lock);
 			return -EINVAL;
 		}
 
-- 
2.30.2