From: Johan Hovold johan@kernel.org
commit b14a39048c1156cfee76228bf449852da2f14df8 upstream.
If disconnect() races with release() after a process has been interrupted, release() could end up returning early and the driver would fail to free its driver data.
Fixes: 2824bd250f0b ("[PATCH] USB: add ldusb driver") Cc: stable stable@vger.kernel.org # 2.6.13 Signed-off-by: Johan Hovold johan@kernel.org Link: https://lore.kernel.org/r/20191010125835.27031-2-johan@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/usb/misc/ldusb.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-)
--- a/drivers/usb/misc/ldusb.c +++ b/drivers/usb/misc/ldusb.c @@ -384,10 +384,7 @@ static int ld_usb_release(struct inode * goto exit; }
- if (mutex_lock_interruptible(&dev->mutex)) { - retval = -ERESTARTSYS; - goto exit; - } + mutex_lock(&dev->mutex);
if (dev->open_count != 1) { retval = -ENODEV;