linux-kernel - [tip: perf/urgent] perf annotate: Fix multiple memory and file descriptor leaks

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Date:   Mon, 21 Oct 2019 06:26:43 -0000
From:   "tip-bot2 for Gustavo A. R. Silva" <tip-bot2@...utronix.de>
To:     linux-tip-commits@...r.kernel.org
Cc:     "Gustavo A. R. Silva" <gustavo@...eddedor.com>,
        Jiri Olsa <jolsa@...nel.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Mark Rutland <mark.rutland@....com>,
        Namhyung Kim <namhyung@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Arnaldo Carvalho de Melo <acme@...hat.com>,
        Ingo Molnar <mingo@...nel.org>, Borislav Petkov <bp@...en8.de>,
        linux-kernel@...r.kernel.org
Subject: [tip: perf/urgent] perf annotate: Fix multiple memory and file
 descriptor leaks

The following commit has been merged into the perf/urgent branch of tip:

Commit-ID:     f948eb45e3af9fb18a0487d0797a773897ef6929
Gitweb:        https://git.kernel.org/tip/f948eb45e3af9fb18a0487d0797a773897ef6929
Author:        Gustavo A. R. Silva <gustavo@...eddedor.com>
AuthorDate:    Mon, 14 Oct 2019 12:10:47 -05:00
Committer:     Arnaldo Carvalho de Melo <acme@...hat.com>
CommitterDate: Tue, 15 Oct 2019 12:00:01 -03:00

perf annotate: Fix multiple memory and file descriptor leaks

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@...eddedor.com>
Acked-by: Jiri Olsa <jolsa@...nel.org>
Cc: Alexander Shishkin <alexander.shishkin@...ux.intel.com>
Cc: Mark Rutland <mark.rutland@....com>
Cc: Namhyung Kim <namhyung@...nel.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Link: http://lore.kernel.org/lkml/20191014171047.GA30850@embeddedor
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.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 4036c7f..e42bf57 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;