[patch] [PATCH] fixdep: avoid underflow when end of entry doesn't coincide

0001-fixdep-avoid-underflow-when-end-of-entry-doesn-t-coi.patch (text/plain), 996 bytes, created by Arsen Arsenović on 2023-02-21 18:41:38 UTC

From 1b1b72dc405fd162fefe0f71bec4746b0ebf5b36 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Arsen=20Arsenovi=C4=87?= <[e-mail]>
Date: Tue, 21 Feb 2023 19:22:46 +0100
Subject: [PATCH] fixdep: avoid underflow when end of entry doesn't coincide
 with EOF
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Signed-off-by: Arsen Arsenović <[e-mail]>
---
 scripts/basic/fixdep.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/scripts/basic/fixdep.c b/scripts/basic/fixdep.c
index 426b4888b..66be73aad 100644
--- a/scripts/basic/fixdep.c
+++ b/scripts/basic/fixdep.c
@@ -338,6 +338,11 @@ void parse_dep_file(void *map, size_t len)
 			do p--; while (!isalnum((unsigned char)*p));
 			p++;
 		}
+		if (p < m) {
+			/* we've consumed the last filename of this list
+			   already.  */
+			break;
+		}
 		memcpy(s, m, p-m); s[p-m] = 0;
 		if (strrcmp(s, "include/autoconf.h") &&
 		    strrcmp(s, "arch/um/include/uml-config.h") &&
-- 
2.39.2