From a08b43aee46ed4272ad7bee2c785edcf313339b3 Mon Sep 17 00:00:00 2001 From: Jiri Slaby Date: Wed, 11 Mar 2009 21:47:39 +0100 Subject: [PATCH] USB: misc/vstusb, fix lock imbalance Make sure we don't leak locked vstdev->lock in vstusb_write. Unlock properly on one fail path. Signed-off-by: Jiri Slaby Signed-off-by: Greg Kroah-Hartman --- drivers/usb/misc/vstusb.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/usb/misc/vstusb.c b/drivers/usb/misc/vstusb.c index 63dff9ba73c..f26ea8dc157 100644 --- a/drivers/usb/misc/vstusb.c +++ b/drivers/usb/misc/vstusb.c @@ -401,6 +401,7 @@ static ssize_t vstusb_write(struct file *file, const char __user *buffer, } if (copy_from_user(buf, buffer, count)) { + mutex_unlock(&vstdev->lock); dev_err(&dev->dev, "%s: can't copy_from_user\n", __func__); retval = -EFAULT; goto exit; -- 2.41.1