[perf PATCH] Fix possible unterminated readlink() result buffer

[Thomas Jarosch]

No need to do "buf[len] = '\0';" since the buffer
is allocated with zalloc().

Signed-off-by: Thomas Jarosch <thomas.jarosch@xxxxxxxxxxxxx>
---
 tools/perf/util/header.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index b6c1ad1..1a1c026 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -267,7 +267,7 @@ int build_id_cache__remove_s(const char *sbuild_id, const char *debugdir)
 	if (access(linkname, F_OK))
 		goto out_free;
 
-	if (readlink(linkname, filename, size) < 0)
+	if (readlink(linkname, filename, size-1) < 0)
 		goto out_free;
 
 	if (unlink(linkname))
-- 
1.7.6.4

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