[PATCH 3/8] perf hist: Fix memory leak of srcline

Jiri Olsa
2019-03-05T15:25:52Z

From: Jiri Olsa <jolsa@redhat.com>

We can't allocate he->srcline unconditionaly, only when
new hist_entry is created. Moving he->srcline allocation
into hist_entry__init function.

Original-patch-by: Jonas Rabenstein <jonas.rabenstein@studium.uni-erlangen.de>
Suggested-by: Namhyung Kim <namhyung@kernel.org>
Link: http://lkml.kernel.org/n/tip-2ijaiiwlzmk4cae3zs97pq0x@git.kernel.org
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
---
tools/perf/util/hist.c | 14 ++++++++++++--
1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c
index 74e307d17c49..f9eb95bf3938 100644
--- a/tools/perf/util/hist.c
+++ b/tools/perf/util/hist.c
@@ -419,6 +419,13 @@ static int hist_entry__init(struct hist_entry *he,
if (he->raw_data == NULL)
goto err_infos;
}
+
+ if (he->srcline) {
+ he->srcline = strdup(he->srcline);
+ if (he->srcline == NULL)
+ goto err_rawdata;
+ }
+
INIT_LIST_HEAD(&he->pairs.node);
thread__get(he->thread);
he->hroot_in = RB_ROOT_CACHED;
@@ -429,6 +436,9 @@ static int hist_entry__init(struct hist_entry *he,

return 0;

+err_rawdata:
+ free(he->raw_data);
+
err_infos:
if (he->branch_info) {
map__put(he->branch_info->from.map);
@@ -605,7 +615,7 @@ __hists__add_entry(struct hists *hists,
.map = al->map,
.sym = al->sym,
},
- .srcline = al->srcline ? strdup(al->srcline) : NULL,
+ .srcline = (char *) al->srcline,
.socket = al->socket,
.cpu = al->cpu,
.cpumode = al->cpumode,
@@ -962,7 +972,7 @@ iter_add_next_cumulative_entry(struct hist_entry_iter *iter,
.map = al->map,
.sym = al->sym,
},
- .srcline = al->srcline ? strdup(al->srcline) : NULL,
+ .srcline = (char *) al->srcline,
.parent = iter->parent,
.raw_data = sample->raw_data,
.raw_size = sample->raw_size,
--
2.17.2