linux-kernel - [PATCH] perf unwind: Fix uninitialized variable

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Message-Id: <20220607000851.39798-1-irogers@google.com>
Date:   Mon,  6 Jun 2022 17:08:51 -0700
From:   Ian Rogers <irogers@...gle.com>
To:     Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org,
        Sedat Dilek <sedat.dilek@...il.com>
Cc:     Ian Rogers <irogers@...gle.com>, llvm@...ts.linux.dev,
        Fangrui Song <maskray@...gle.com>,
        Sebastian Ullrich <sebasti@...lri.ch>
Subject: [PATCH] perf unwind: Fix uninitialized variable

ret may be uninitialized on error goto paths.

Reported-by: Sedat Dilek <sedat.dilek@...il.com>
Fixes: dc2cf4ca866f ("perf unwind: Fix segbase for ld.lld linked objects")
Signed-off-by: Ian Rogers <irogers@...gle.com>
---
 tools/perf/util/unwind-libunwind-local.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/util/unwind-libunwind-local.c b/tools/perf/util/unwind-libunwind-local.c
index 37622699c91a..6e5b8cce47bf 100644
--- a/tools/perf/util/unwind-libunwind-local.c
+++ b/tools/perf/util/unwind-libunwind-local.c
@@ -174,7 +174,7 @@ static int elf_section_address_and_offset(int fd, const char *name, u64 *address
 	Elf *elf;
 	GElf_Ehdr ehdr;
 	GElf_Shdr shdr;
-	int ret;
+	int ret = -1;
 
 	elf = elf_begin(fd, PERF_ELF_C_READ_MMAP, NULL);
 	if (elf == NULL)
-- 
2.36.1.255.ge46751e96f-goog