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Commit dc6802a7 authored by Dan Carpenter's avatar Dan Carpenter Committed by Greg Kroah-Hartman
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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: default avatarDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 4ac5d705

drivers/tty/tty_io.c

+2 −0
Original line number Diff line number Diff line
@@ -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);