Merge "diag: Add protection while de-initializing clients" (1d4108bd) · Commits · e / devices / android_kernel_xiaomi_markw

drivers/char/diag/diagchar_core.c

+5 −1

Original line number	Diff line number	Diff line
		@@ -1747,14 +1747,18 @@ static int diag_ioctl_lsm_deinit(void)
		{
		int i;

		mutex_lock(&driver->diagchar_mutex);
		for (i = 0; i < driver->num_clients; i++)
		if (driver->client_map[i].pid == current->tgid)
		break;

		if (i == driver->num_clients)
		if (i == driver->num_clients) {
		mutex_unlock(&driver->diagchar_mutex);
		return -EINVAL;
		}

		driver->data_ready[i] \|= DEINIT_TYPE;
		mutex_unlock(&driver->diagchar_mutex);
		wake_up_interruptible(&driver->wait_q);

		return 1;