Re: [PATCH] perf unwind: Fix uninitialized variable

Fangrui Song
2022-06-07T00:27:07Z

On 2022-06-06, Ian Rogers wrote:
>ret may be uninitialized on error goto paths.
>
>Reported-by: Sedat Dilek <sedat.dilek@gmail.com>
>Fixes: dc2cf4ca866f ("perf unwind: Fix segbase for ld.lld linked objects")
>Signed-off-by: Ian Rogers <irogers@google.com>

Thanks. Sorry for my mistake...

Reviewed-by: Fangrui Song <maskray@google.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
>