| Message ID | 20221003091016.641900-1-jtornosm@redhat.com |
|---|---|
| State | New |
| Headers | show |
| Series | USB: usbip: missing lock in stub down | expand |
On 10/3/22 03:10, Jose Ignacio Tornos Martinez wrote: > 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: Jose Ignacio Tornos Martinez <jtornosm@redhat.com> > --- > drivers/usb/usbip/stub_dev.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/drivers/usb/usbip/stub_dev.c b/drivers/usb/usbip/stub_dev.c > index 3c6d452e3bf4..b4b452ce7120 100644 > --- a/drivers/usb/usbip/stub_dev.c > +++ b/drivers/usb/usbip/stub_dev.c > @@ -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; The change looks good to me. Please run get_miantainers.pl to include all the maintainers in the future. Reviewed-by: Shuah Khan <skhan@linuxfoundation.org> Greg, Please pick this up. thanks, -- Shuah
diff --git a/drivers/usb/usbip/stub_dev.c b/drivers/usb/usbip/stub_dev.c index 3c6d452e3bf4..b4b452ce7120 100644 --- a/drivers/usb/usbip/stub_dev.c +++ b/drivers/usb/usbip/stub_dev.c @@ -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;
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: Jose Ignacio Tornos Martinez <jtornosm@redhat.com> --- drivers/usb/usbip/stub_dev.c | 2 ++ 1 file changed, 2 insertions(+)