Commit cb6186ae authored by Changbin Du's avatar Changbin Du Committed by Arnaldo Carvalho de Melo

perf hist: Add missing map__put() in error case

We need to map__put() before returning from failure of
sample__resolve_callchain().

Detected with gcc's ASan.
Signed-off-by: default avatarChangbin Du <changbin.du@gmail.com>
Reviewed-by: default avatarJiri Olsa <jolsa@kernel.org>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Krister Johansen <kjlx@templeofstupid.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt (VMware) <rostedt@goodmis.org>
Fixes: 9c68ae98 ("perf callchain: Reference count maps")
Link: http://lkml.kernel.org/r/20190316080556.3075-10-changbin.du@gmail.comSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 70c819e4
......@@ -1111,8 +1111,10 @@ int hist_entry_iter__add(struct hist_entry_iter *iter, struct addr_location *al,
err = sample__resolve_callchain(iter->sample, &callchain_cursor, &iter->parent,
iter->evsel, al, max_stack_depth);
if (err)
if (err) {
map__put(alm);
return err;
}
err = iter->ops->prepare_entry(iter, al);
if (err)
......
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