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authorThomas Jarosch <thomas.jarosch@intra2net.com>2011-10-14 19:00:47 +0200
committerArnaldo Carvalho de Melo <acme@redhat.com>2011-10-14 12:49:35 -0300
commit6c3c5b26d08569ed80e10d3e02d3c997ed1e6e7c (patch)
tree78ea18b888811922e50ceef80bb33321fa01687d /tools/perf/util/header.c
parent0361fc25d509be09464dd23c274bd175cc933cc8 (diff)
perf buildid: Fix possible unterminated readlink() result buffer
The readlink function doesn't guarantee that a '\0' will be put at the end of the provided buffer if there is no space left. No need to do "buf[len] = '\0';" since the buffer is allocated with zalloc(). Link: http://lkml.kernel.org/r/4E986ABF.9040706@intra2net.com Signed-off-by: Thomas Jarosch <thomas.jarosch@intra2net.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/header.c')
-rw-r--r--tools/perf/util/header.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index f2ceb0f7d669..2143a32638c2 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -1289,7 +1289,7 @@ 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))