From 0967ebffe098157180a0bbd180ac90348c6e07d7 Mon Sep 17 00:00:00 2001 From: Riccardo Mancini Date: Thu, 15 Jul 2021 18:07:06 +0200 Subject: perf inject: Fix dso->nsinfo refcounting ASan reports a memory leak of nsinfo during the execution of: # perf test "31: Lookup mmap thread" The leak is caused by a refcounted variable being replaced without dropping the refcount. This patch makes sure that the refcnt of nsinfo is decreased when a refcounted variable is replaced with a new value. Signed-off-by: Riccardo Mancini Fixes: 27c9c3424fc217da ("perf inject: Add --buildid-all option") Cc: Ian Rogers Cc: Jiri Olsa Cc: Mark Rutland Cc: Namhyung Kim Cc: Peter Zijlstra Link: http://lore.kernel.org/lkml/55223bc8821b34ccb01f92ef1401c02b6a32e61f.1626343282.git.rickyman7@gmail.com [ Split from a larger patch ] Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-inject.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'tools/perf/builtin-inject.c') diff --git a/tools/perf/builtin-inject.c b/tools/perf/builtin-inject.c index 5d6f583e2cd3..ffd2b25039e3 100644 --- a/tools/perf/builtin-inject.c +++ b/tools/perf/builtin-inject.c @@ -361,9 +361,10 @@ static struct dso *findnew_dso(int pid, int tid, const char *filename, dso = machine__findnew_dso_id(machine, filename, id); } - if (dso) + if (dso) { + nsinfo__put(dso->nsinfo); dso->nsinfo = nsi; - else + } else nsinfo__put(nsi); thread__put(thread); -- cgit