From: Ian Rogers irogers@google.com
commit 7d4c85b7035eb2f9ab217ce649dcd1bfaf0cacd3 upstream.
The 'test_dir' variable is assigned to the 'release' array which is out-of-scope 3 lines later.
Extend the scope of the 'release' array so that an out-of-scope array isn't accessed.
Bug detected by clang's address sanitizer.
Fixes: 07bc5c699a3d ("perf tools: Make fetch_kernel_version() publicly available") Cc: stable@vger.kernel.org # v4.4+ Signed-off-by: Ian Rogers irogers@google.com Cc: Alexander Shishkin alexander.shishkin@linux.intel.com Cc: Andi Kleen ak@linux.intel.com Cc: Jiri Olsa jolsa@redhat.com Cc: Namhyung Kim namhyung@kernel.org Cc: Peter Zijlstra peterz@infradead.org Cc: Stephane Eranian eranian@google.com Cc: Wang Nan wangnan0@huawei.com Link: http://lore.kernel.org/lkml/20190926220018.25402-1-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo acme@redhat.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- tools/perf/util/llvm-utils.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)
--- a/tools/perf/util/llvm-utils.c +++ b/tools/perf/util/llvm-utils.c @@ -225,14 +225,14 @@ static int detect_kbuild_dir(char **kbui const char *prefix_dir = ""; const char *suffix_dir = "";
+ /* _UTSNAME_LENGTH is 65 */ + char release[128]; + char *autoconf_path;
int err;
if (!test_dir) { - /* _UTSNAME_LENGTH is 65 */ - char release[128]; - err = fetch_kernel_version(NULL, release, sizeof(release)); if (err)