linux-kernel - [PATCH AUTOSEL 4.20 02/60] kallsyms: Handle too long symbols in kallsyms.c

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Message-Id: <20190313191021.158171-2-sashal@kernel.org>
Date:   Wed, 13 Mar 2019 15:09:23 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Eugene Loh <eugene.loh@...cle.com>,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH AUTOSEL 4.20 02/60] kallsyms: Handle too long symbols in kallsyms.c

From: Eugene Loh <eugene.loh@...cle.com>

[ Upstream commit 6db2983cd8064808141ccefd75218f5b4345ffae ]

When checking for symbols with excessively long names,
account for null terminating character.

Fixes: f3462aa952cf ("Kbuild: Handle longer symbols in kallsyms.c")
Signed-off-by: Eugene Loh <eugene.loh@...cle.com>
Acked-by: Ard Biesheuvel <ard.biesheuvel@...aro.org>
Signed-off-by: Masahiro Yamada <yamada.masahiro@...ionext.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 scripts/kallsyms.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/scripts/kallsyms.c b/scripts/kallsyms.c
index 109a1af7e444..f9339da8605e 100644
--- a/scripts/kallsyms.c
+++ b/scripts/kallsyms.c
@@ -118,8 +118,8 @@ static int read_symbol(FILE *in, struct sym_entry *s)
 			fprintf(stderr, "Read error or end of file.\n");
 		return -1;
 	}
-	if (strlen(sym) > KSYM_NAME_LEN) {
-		fprintf(stderr, "Symbol %s too long for kallsyms (%zu vs %d).\n"
+	if (strlen(sym) >= KSYM_NAME_LEN) {
+		fprintf(stderr, "Symbol %s too long for kallsyms (%zu >= %d).\n"
 				"Please increase KSYM_NAME_LEN both in kernel and kallsyms.c\n",
 			sym, strlen(sym), KSYM_NAME_LEN);
 		return -1;
-- 
2.19.1