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| author | Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> | 2015-11-13 12:29:10 +0000 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2015-11-13 12:24:32 -0300 |
| commit | 0196e787ceb58cdfea822482ec70019bc16cbd51 (patch) | |
| tree | 7da102222263c83f0522e71bc7ac2cad7d12aa49 /tools | |
| parent | d8145b3e30a24280c396d88c8703c50a1ea0aa3a (diff) | |
| download | lwn-0196e787ceb58cdfea822482ec70019bc16cbd51.tar.gz lwn-0196e787ceb58cdfea822482ec70019bc16cbd51.zip | |
perf probe: Fix memory leaking on failure by clearing all probe_trace_events
Fix memory leaking on the debuginfo__find_trace_events() failure path
which frees an array of probe_trace_events but doesn't clears all the
allocated sub-structures and strings.
So, before doing zfree(tevs), clear all the array elements which may
have allocated resources.
Reported-by: Wang Nan <wangnan0@huawei.com>
Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1447417761-156094-2-git-send-email-wangnan0@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/perf/util/probe-finder.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/tools/perf/util/probe-finder.c b/tools/perf/util/probe-finder.c index bd8f03de5e40..63993d7e0fac 100644 --- a/tools/perf/util/probe-finder.c +++ b/tools/perf/util/probe-finder.c @@ -1246,7 +1246,7 @@ int debuginfo__find_trace_events(struct debuginfo *dbg, struct trace_event_finder tf = { .pf = {.pev = pev, .callback = add_probe_trace_event}, .max_tevs = probe_conf.max_probes, .mod = dbg->mod}; - int ret; + int ret, i; /* Allocate result tevs array */ *tevs = zalloc(sizeof(struct probe_trace_event) * tf.max_tevs); @@ -1258,6 +1258,8 @@ int debuginfo__find_trace_events(struct debuginfo *dbg, ret = debuginfo__find_probes(dbg, &tf.pf); if (ret < 0) { + for (i = 0; i < tf.ntevs; i++) + clear_probe_trace_event(&tf.tevs[i]); zfree(tevs); return ret; } |