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| author |   Thomas Jarosch <thomas.jarosch@intra2net.com> | 2011-10-14 19:00:47 +0200 |
|---|---|---|
| committer |   Arnaldo Carvalho de Melo <acme@redhat.com> | 2011-10-14 12:49:35 -0300 |
| commit | 6c3c5b26d08569ed80e10d3e02d3c997ed1e6e7c (patch) | |
| tree | 78ea18b888811922e50ceef80bb33321fa01687d /tools/perf/util/header.c | |
| parent | perf annotate browser: Allow toggling the visualization of source code lines (diff) | |
| download | linux-dev-6c3c5b26d08569ed80e10d3e02d3c997ed1e6e7c.tar.xz linux-dev-6c3c5b26d08569ed80e10d3e02d3c997ed1e6e7c.zip | |
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.c | 2 |
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)) |