drivers/serial: check the remote device before get name

| #0 0x2119bf1 in rpmsg_get_cpuname rptun/rptun.c:1157 | #1 0x24f97bd in uart_rpmsg_device_destroy serial/uart_rpmsg.c:342 | #2 0x2117d56 in rptun_dev_stop rptun/rptun.c:883 | #3 0x21181d7 in rptun_do_ioctl rptun/rptun.c:922 | #4 0x2119721 in rptun_ioctl_foreach rptun/rptun.c:1086 Signed-off-by: chao an <[email protected]>
anchao · Nov 6, 2023 · 9ceca15 · 9ceca15
1 parent cc6b95f
commit 9ceca15
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/drivers/serial/uart_rpmsg.c b/drivers/serial/uart_rpmsg.c
@@ -339,7 +339,8 @@ static void uart_rpmsg_device_destroy(FAR struct rpmsg_device *rdev,
   FAR struct uart_dev_s *dev = priv_;
   FAR struct uart_rpmsg_priv_s *priv = dev->priv;
 
-  if (strcmp(priv->cpuname, rpmsg_get_cpuname(rdev)) == 0)
+  if (priv->ept.priv != NULL &&
+      strcmp(priv->cpuname, rpmsg_get_cpuname(rdev)) == 0)
     {
       rpmsg_destroy_ept(&priv->ept);
     }