Commit 9b6447e0 authored by Jose Ignacio Tornos Martinez's avatar Jose Ignacio Tornos Martinez Committed by Greg Kroah-Hartman
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USB: usbip: missing lock in stub down 



Missing lock in sysfs operation when we want to close the connection in order
to check the status and send the down event in a safe way.

Signed-off-by: default avatarJose Ignacio Tornos Martinez <jtornosm@redhat.com>
Reviewed-by: default avatarShuah Khan <skhan@linuxfoundation.org>
Link: https://lore.kernel.org/r/20221003091016.641900-1-jtornosm@redhat.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 61dd457c

drivers/usb/usbip/stub_dev.c

+2 −0
Original line number Diff line number Diff line
@@ -118,6 +118,8 @@ static ssize_t usbip_sockfd_store(struct device *dev, struct device_attribute *a 
	} else {

		dev_info(dev, "stub down\n");



		mutex_lock(&sdev->ud.sysfs_lock);



		spin_lock_irq(&sdev->ud.lock);

		if (sdev->ud.status != SDEV_ST_USED)

			goto err;