diff options
| author | Tommi Rantala <[email protected]> | 2017-03-22 15:06:22 +0200 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <[email protected]> | 2017-03-27 15:36:27 -0300 |
| commit | b7126ef78612a3d4a37aadf39125cff048cebb9b (patch) | |
| tree | 27c578f26aafda5fe9d96f2770217d34712552bb | |
| parent | 0e6ba11511aef91ba8e2528ddc681d88922d7b0b (diff) | |
perf utils: use sizeof(buf) - 1 in readlink() call
Ensure that we have space for the null byte in buf.
Signed-off-by: Tommi Rantala <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
| -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 05714d548584..cf22962ce725 100644 --- a/tools/perf/util/header.c +++ b/tools/perf/util/header.c @@ -378,7 +378,7 @@ static int write_cmdline(int fd, struct perf_header *h __maybe_unused, * actual atual path to perf binary */ sprintf(proc, "/proc/%d/exe", getpid()); - ret = readlink(proc, buf, sizeof(buf)); + ret = readlink(proc, buf, sizeof(buf) - 1); if (ret <= 0) return -1; |