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Commit 5a2261ed authored by Linus Torvalds's avatar Linus Torvalds Committed by Greg Kroah-Hartman
Browse files

tty: wipe buffer. 



commit c9a8e5fce009e3c601a43c49ea9dbcb25d1ffac5 upstream.

After we are done with the tty buffer, zero it out.

Reported-by: default avataraszlig <aszlig@nix.build>
Tested-by: default avatarMilan Broz <gmazyland@gmail.com>
Tested-by: default avatarDaniel Zatovic <daniel.zatovic@gmail.com>
Tested-by: default avataraszlig <aszlig@nix.build>
Cc: Willy Tarreau <w@1wt.eu>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 5e8c28f4

drivers/tty/tty_buffer.c

+5 −1
Original line number Diff line number Diff line
@@ -468,11 +468,15 @@ receive_buf(struct tty_port *port, struct tty_buffer *head, int count) 
{

	unsigned char *p = char_buf_ptr(head, head->read);

	char	      *f = NULL;

	int n;



	if (~head->flags & TTYB_NORMAL)

		f = flag_buf_ptr(head, head->read);



	return port->client_ops->receive_buf(port, p, f, count);

	n = port->client_ops->receive_buf(port, p, f, count);

	if (n > 0)

		memset(p, 0, n);

	return n;

}



/**