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From: "Gustavo A. R. Silva" <gustavo@embeddedor.com>
To: Peter Zijlstra <peterz@infradead.org>,
	Ingo Molnar <mingo@redhat.com>,
	Arnaldo Carvalho de Melo <acme@kernel.org>,
	Mark Rutland <mark.rutland@arm.com>,
	Alexander Shishkin <alexander.shishkin@linux.intel.com>,
	Jiri Olsa <jolsa@redhat.com>, Namhyung Kim <namhyung@kernel.org>
Cc: linux-kernel@vger.kernel.org,
	"Gustavo A. R. Silva" <gustavo@embeddedor.com>
Subject: [PATCH] perf annotate: Fix multiple memory and file descriptor leaks
Date: Mon, 14 Oct 2019 12:10:47 -0500
Message-ID: <20191014171047.GA30850@embeddedor> (raw)

Store SYMBOL_ANNOTATE_ERRNO__BPF_MISSING_BTF in variable *ret*, instead
of returning in the middle of the function and leaking multiple
resources: prog_linfo, btf, s and bfdf.

Addresses-Coverity-ID: 1454832 ("Structurally dead code")
Fixes: 11aad897f6d1 ("perf annotate: Don't return -1 for error when doing BPF disassembly")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
---
 tools/perf/util/annotate.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c
index 4036c7f7b0fb..e42bf572358c 100644
--- a/tools/perf/util/annotate.c
+++ b/tools/perf/util/annotate.c
@@ -1758,7 +1758,7 @@ static int symbol__disassemble_bpf(struct symbol *sym,
 	info_node = perf_env__find_bpf_prog_info(dso->bpf_prog.env,
 						 dso->bpf_prog.id);
 	if (!info_node) {
-		return SYMBOL_ANNOTATE_ERRNO__BPF_MISSING_BTF;
+		ret = SYMBOL_ANNOTATE_ERRNO__BPF_MISSING_BTF;
 		goto out;
 	}
 	info_linear = info_node->info_linear;
-- 
2.23.0


             reply index

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-14 17:10 Gustavo A. R. Silva [this message]
2019-10-15  8:46 ` Jiri Olsa
2019-10-15 15:02   ` Arnaldo Carvalho de Melo
2019-10-21  6:26 ` [tip: perf/urgent] " tip-bot2 for Gustavo A. R. Silva

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