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authorMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com>2015-11-13 12:29:10 +0000
committerArnaldo Carvalho de Melo <acme@redhat.com>2015-11-13 12:24:32 -0300
commit0196e787ceb58cdfea822482ec70019bc16cbd51 (patch)
tree7da102222263c83f0522e71bc7ac2cad7d12aa49
parentd8145b3e30a24280c396d88c8703c50a1ea0aa3a (diff)
downloadlinux-0196e787ceb58cdfea822482ec70019bc16cbd51.tar.bz2
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>
-rw-r--r--tools/perf/util/probe-finder.c4
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;
}