[PATCH 1/1] printk: fix NULL ptr dereference in nbcon driver

[Sahil Chandna <quic_chandna@xxxxxxxxxxx>]

Add a check for NULL console in nbcon driver.

Signed-off-by: Sahil Chandna <quic_chandna@xxxxxxxxxxx>
---
 printk/nbcon.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/kernel/printk/nbcon.c b/kernel/printk/nbcon.c
index e697a8e..398739d 100644
--- a/kernel/printk/nbcon.c
+++ b/kernel/printk/nbcon.c
@@ -1623,6 +1623,9 @@ void nbcon_release(struct uart_port *up)
 		.prio		= NBCON_PRIO_NORMAL,
 	};
 
+	if (!con)
+		return;
+
 	if (!con->locked_port)
 		return;
 
-- 
2.17.1