From: Dmitry V. Levin <ldv@altlinux.org>
Date: Sun, 23 Dec 2018 22:12:36 +0000 (+0000)
Subject: net: fix off-by-one error in sorted xlat lookup
X-Git-Tag: v4.26~32
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=476b03b33a9e4d0eb1a77fcb544c58b34d0e27b9;p=strace

net: fix off-by-one error in sorted xlat lookup

* net.c (ax25_protocols): Decrement xlat size by one to account
for XLAT_END as other users of sorted xlats do.

Fixes: v4.25~28 "net: add support for AX.25 protocols and socket option names decoding"
---

diff --git a/net.c b/net.c
index bcab3294..a87bdf74 100644
--- a/net.c
+++ b/net.c
@@ -128,8 +128,9 @@ SYS_FUNC(socket)
 
 	case AF_AX25:
 		/* Those are not available in public headers.  */
-		printxval_searchn_ex(ARRSZ_PAIR(ax25_protocols), tcp->u_arg[2],
-				     "AX25_P_???", XLAT_STYLE_VERBOSE);
+		printxval_searchn_ex(ARRSZ_PAIR(ax25_protocols) - 1,
+				     tcp->u_arg[2], "AX25_P_???",
+				     XLAT_STYLE_VERBOSE);
 		break;
 
 	case AF_NETLINK: