Merge "msm: ADSPRPC: Restrict untrusted applications from attaching to GuestOS" (8c95e6b8) · Commits · e / devices / android_kernel_fairphone_FP4

drivers/char/adsprpc.c

+13 −0

Original line number	Diff line number	Diff line
		@@ -2543,6 +2543,12 @@ static int fastrpc_init_process(struct fastrpc_file *fl,
		remote_arg_t ra[1];
		int tgid = fl->tgid;

		if (fl->dev_minor == MINOR_NUM_DEV) {
		err = -ECONNREFUSED;
		pr_err("adsprpc: %s: untrusted app trying to attach to privileged DSP PD\n",
		__func__);
		return err;
		}
		ra[0].buf.pv = (void *)&tgid;
		ra[0].buf.len = sizeof(tgid);
		ioctl.inv.handle = FASTRPC_STATIC_HANDLE_PROCESS_GROUP;
		@@ -2683,6 +2689,13 @@ static int fastrpc_init_process(struct fastrpc_file *fl,
		unsigned int pageslen;
		} inbuf;

		if (fl->dev_minor == MINOR_NUM_DEV) {
		err = -ECONNREFUSED;
		pr_err("adsprpc: %s: untrusted app trying to attach to audio PD\n",
		__func__);
		return err;
		}

		if (!init->filelen)
		goto bail;