Commit a43a5ccd authored Jan 24, 2012 by Jan Beulich Committed by Konrad Rzeszutek Wilk Feb 03, 2012

xenbus_dev: add missing error check to watch handling



So far only the watch path was checked to be zero terminated, while
the watch token was merely assumed to be.

Signed-off-by: Jan Beulich <jbeulich@suse.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

parent e4de866a

drivers/xen/xenbus/xenbus_dev_frontend.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -369,6 +369,10 @@ static int xenbus_write_watch(unsigned msg_type, struct xenbus_file_priv *u)
		goto out;
		}
		token++;
		if (memchr(token, 0, u->u.msg.len - (token - path)) == NULL) {
		rc = -EILSEQ;
		goto out;
		}

		if (msg_type == XS_WATCH) {
		watch = alloc_watch_adapter(path, token);