From: Eric Dumazet <eric.dumazet@gmail.com>
Date: Thu, 24 Sep 2009 13:05:59 +0000 (+0200)
Subject: perf tools: Fix buffer allocation
X-Git-Tag: Ubuntu-5.4-5.4.0-11.14~28519^2~1
X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=a255a9981a8566a1efabec983b7811e937e662d2;p=mirror_ubuntu-focal-kernel.git

perf tools: Fix buffer allocation

"perf top" cores dump on my dev machine, if run from a directory
where vmlinux is present:

  *** glibc detected *** malloc(): memory corruption: 0x085670d0 ***

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Cc: <stable@kernel.org>
LKML-Reference: <4ABB6EB7.7000002@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---

diff --git a/tools/perf/util/module.c b/tools/perf/util/module.c
index 8f81622073e1..0d8c85defcd2 100644
--- a/tools/perf/util/module.c
+++ b/tools/perf/util/module.c
@@ -423,7 +423,7 @@ static int mod_dso__load_module_paths(struct mod_dso *self)
 	len += strlen(uts.release);
 	len += strlen("/modules.dep");
 
-	dpath = calloc(1, len);
+	dpath = calloc(1, len + 1);
 	if (dpath == NULL)
 		return err;