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| author | Ian Rogers <irogers@google.com> | 2021-01-14 13:23:04 -0800 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2021-01-15 17:28:27 -0300 |
| commit | be82fddca81eefd1edbd9b290dfcb2177e24785b (patch) | |
| tree | 163a0aaa6764047278795f0665e94076e74f8624 /tools | |
| parent | a042a82ddbb3434f523c0671f5301d1fe796b4eb (diff) | |
| download | linux-be82fddca81eefd1edbd9b290dfcb2177e24785b.tar.gz linux-be82fddca81eefd1edbd9b290dfcb2177e24785b.tar.bz2 linux-be82fddca81eefd1edbd9b290dfcb2177e24785b.zip | |
libperf tests: Avoid uninitialized variable warning
The variable 'bf' is read (for a write call) without being initialized
triggering a memory sanitizer warning. Use 'bf' in the read and switch
the write to reading from a string.
Signed-off-by: Ian Rogers <irogers@google.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lore.kernel.org/lkml/20210114212304.4018119-1-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/lib/perf/tests/test-evlist.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/tools/lib/perf/tests/test-evlist.c b/tools/lib/perf/tests/test-evlist.c index 6d8ebe0c2504..1b225fe34a72 100644 --- a/tools/lib/perf/tests/test-evlist.c +++ b/tools/lib/perf/tests/test-evlist.c @@ -208,7 +208,6 @@ static int test_mmap_thread(void) char path[PATH_MAX]; int id, err, pid, go_pipe[2]; union perf_event *event; - char bf; int count = 0; snprintf(path, PATH_MAX, "%s/kernel/debug/tracing/events/syscalls/sys_enter_prctl/id", @@ -229,6 +228,7 @@ static int test_mmap_thread(void) pid = fork(); if (!pid) { int i; + char bf; read(go_pipe[0], &bf, 1); @@ -266,7 +266,7 @@ static int test_mmap_thread(void) perf_evlist__enable(evlist); /* kick the child and wait for it to finish */ - write(go_pipe[1], &bf, 1); + write(go_pipe[1], "A", 1); waitpid(pid, NULL, 0); /* |