Commit-ID: 981d05adf2e2acc328abb929a6ed3536c0d41c5f
Gitweb: http://git.kernel.org/tip/981d05adf2e2acc328abb929a6ed3536c0d41c5f
Author: Masami Hiramatsu <masami.hiramatsu.pt@xxxxxxxxxxx>
AuthorDate: Thu, 16 Jan 2014 09:39:44 +0000
Committer: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Thu, 16 Jan 2014 16:26:50 -0300
perf probe: Release allocated probe_trace_event if failed
To fix a memory leak, release all allocated probe_trace_event on the
error path of try_to_find_probe_trace_events.
Reported-by: David Ahern <dsahern@xxxxxxxxx>
Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@xxxxxxxxxxx>
Cc: "David A. Long" <dave.long@xxxxxxxxxx>
Cc: "Steven Rostedt (Red Hat)" <rostedt@xxxxxxxxxxx>
Cc: David Ahern <dsahern@xxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Oleg Nesterov <oleg@xxxxxxxxxx>
Cc: Srikar Dronamraju <srikar@xxxxxxxxxxxxxxxxxx>
Cc: yrl.pp-manager.tt@xxxxxxxxxxx
Link: http://lkml.kernel.org/r/20140116093944.24403.30228.stgit@kbuild-fedora.novalocal
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
tools/perf/util/probe-event.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c
index a4ee6b4..579b655 100644
--- a/tools/perf/util/probe-event.c
+++ b/tools/perf/util/probe-event.c
@@ -72,6 +72,7 @@ static int e_snprintf(char *str, size_t size, const char *format, ...)
static char *synthesize_perf_probe_point(struct perf_probe_point *pp);
static int convert_name_to_addr(struct perf_probe_event *pev,
const char *exec);
+static void clear_probe_trace_event(struct probe_trace_event *tev);
static struct machine machine;
/* Initialize symbol maps and path of vmlinux/modules */
@@ -407,6 +408,14 @@ static int add_module_to_probe_trace_events(struct probe_trace_event *tevs,
return ret;
}
+static void clear_probe_trace_events(struct probe_trace_event *tevs, int ntevs)
+{
+ int i;
+
+ for (i = 0; i < ntevs; i++)
+ clear_probe_trace_event(tevs + i);
+}
+
/* Try to find perf_probe_event with debuginfo */
static int try_to_find_probe_trace_events(struct perf_probe_event *pev,
struct probe_trace_event **tevs,
@@ -442,6 +451,10 @@ static int try_to_find_probe_trace_events(struct perf_probe_event *pev,
ret = add_module_to_probe_trace_events(*tevs,
ntevs, target);
}
+ if (ret < 0) {
+ clear_probe_trace_events(*tevs, ntevs);
+ zfree(tevs);
+ }
return ret < 0 ? ret : ntevs;
}
--
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