usbip: usbip_host: fix to hold parent lock for device_attach() calls (4bfb141b) · Commits · 戴 / test

usbip_host calls device_attach() without holding dev->parent lock. Fix it. Signed-off-by:

Shuah Khan <shuahkh@osg.samsung.com> Cc: stable <stable@vger.kernel.org> Signed-off-by:

drivers/usb/usbip/stub_main.c

+5 −0

Original line number	Diff line number	Diff line
		@@ -186,7 +186,12 @@ static ssize_t rebind_store(struct device_driver dev, const char buf,
		if (!bid)
		return -ENODEV;

		/* device_attach() callers should hold parent lock for USB */
		if (bid->udev->dev.parent)
		device_lock(bid->udev->dev.parent);
		ret = device_attach(&bid->udev->dev);
		if (bid->udev->dev.parent)
		device_unlock(bid->udev->dev.parent);
		if (ret < 0) {
		dev_err(&bid->udev->dev, "rebind failed\n");
		return ret;