From 73f565d1b836fa1d6af86efe7838f8407368508c Mon Sep 17 00:00:00 2001
From: "Dmitry V. Levin" <ldv@altlinux.org>
Date: Sun, 23 Dec 2018 22:12:36 +0000
Subject: [PATCH] netlink_smc_diag: fix off-by-one error in xlat lookup

* netlink_smc_diag.c (decode_smc_diag_shutdown): Decrement xlat size
by one to account for XLAT_END as other users of xlats do.

Fixes: v4.25~54 "netlink_smc_diag: decode SMC_DIAG_SHUTDOWN attribute value"
---
 netlink_smc_diag.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/netlink_smc_diag.c b/netlink_smc_diag.c
index 88337829..25809fc8 100644
--- a/netlink_smc_diag.c
+++ b/netlink_smc_diag.c
@@ -136,7 +136,7 @@ decode_smc_diag_shutdown(struct tcb *const tcp,
 			 const void *const opaque_data)
 {
 	const struct decode_nla_xlat_opts opts = {
-		ARRSZ_PAIR(sock_shutdown_flags), "???_SHUTDOWN",
+		ARRSZ_PAIR(sock_shutdown_flags) - 1, "???_SHUTDOWN",
 		.size = 1,
 	};