tty: handle NULL parameters in free_tty_struct() · dc6802a771 - Gogs

tty: handle NULL parameters in free_tty_struct()

We sometimes pass NULL pointers to free_tty_struct().  One example where
it can happen is in the error handling code in pty_common_install().

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Dan Carpenter 13 years ago

parent

4ac5d7050e

commit

dc6802a771

1 changed files with 2 additions and 0 deletions

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							+ 2
							
							- 0
						
drivers/tty/tty_io.c
							 
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				@@ -181,6 +181,8 @@ struct tty_struct *alloc_tty_struct(void)
			
				 void free_tty_struct(struct tty_struct *tty)
			
				 {
			
				+	if (!tty)
			
				+		return;
			
				 	if (tty->dev)
			
				 		put_device(tty->dev);
			
				 	kfree(tty->write_buf);