From 888d9236e2249cb1bda686aca8729fdcc69a10ac Mon Sep 17 00:00:00 2001
From: Ed Maste <emaste@FreeBSD.org>
Date: Fri, 5 Jun 2026 15:16:53 -0400
Subject: [PATCH] netlink: Use unsigned type in nl_process_nbuf

nlmsghdr::nlmsg_len and nl_buf::offset are u_int.  Make msglen match.

Reviewed by:	pouria, glebius
Sponsored by:	The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D57474
---
 sys/netlink/netlink_io.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/sys/netlink/netlink_io.c b/sys/netlink/netlink_io.c
index 9646eb2650d..51c87d22971 100644
--- a/sys/netlink/netlink_io.c
+++ b/sys/netlink/netlink_io.c
@@ -345,9 +345,11 @@ nl_process_nbuf(struct nl_buf *nb, struct nlpcb *nlp)
 	};
 
 	for (; nb->offset + sizeof(struct nlmsghdr) <= nb->datalen;) {
+		u_int msglen;
+
 		hdr = (struct nlmsghdr *)&nb->data[nb->offset];
 		/* Save length prior to calling handler */
-		int msglen = NLMSG_ALIGN(hdr->nlmsg_len);
+		msglen = NLMSG_ALIGN(hdr->nlmsg_len);
 		NL_LOG(LOG_DEBUG3, "parsing offset %d/%d",
 		    nb->offset, nb->datalen);
 		npt_clear(&npt);