linux-kernel - [PATCH v2] perf check: Add sanitizer feature and use to avoid test failure

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Message-Id: <20241018055627.1005723-1-irogers@google.com>
Date: Thu, 17 Oct 2024 22:56:27 -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>, Namhyung Kim <namhyung@...nel.org>, 
	Mark Rutland <mark.rutland@....com>, 
	Alexander Shishkin <alexander.shishkin@...ux.intel.com>, Jiri Olsa <jolsa@...nel.org>, 
	Ian Rogers <irogers@...gle.com>, Adrian Hunter <adrian.hunter@...el.com>, 
	Kan Liang <kan.liang@...ux.intel.com>, Thomas Richter <tmricht@...ux.ibm.com>, 
	James Clark <james.clark@...aro.org>, linux-perf-users@...r.kernel.org, 
	linux-kernel@...r.kernel.org
Subject: [PATCH v2] perf check: Add sanitizer feature and use to avoid test failure

Sanitizer builds can break expectations for test disassembly,
particularly in the annotate test. Add features for the different
sanitizer options seen in the source tree. Use the added sanitizer
feature to skip the annotate test when sanitizers are in use.

Signed-off-by: Ian Rogers <irogers@...gle.com>
---
v2 build fix.
---
 tools/perf/builtin-check.c         | 49 ++++++++++++++++++++++++++++++
 tools/perf/tests/shell/annotate.sh |  6 ++++
 2 files changed, 55 insertions(+)

diff --git a/tools/perf/builtin-check.c b/tools/perf/builtin-check.c
index 0b76b6e42b78..c44444008d64 100644
--- a/tools/perf/builtin-check.c
+++ b/tools/perf/builtin-check.c
@@ -9,6 +9,49 @@
 #include <string.h>
 #include <subcmd/parse-options.h>
 
+#if defined(__has_feature)
+#define HAS_COMPILER_FEATURE(feature) __has_feature(feature)
+#else
+#define HAS_COMPILER_FEATURE(feature) 0
+#endif
+
+#if defined(__SANITIZE_ADDRESS__) || defined(ADDRESS_SANITIZER) || \
+	HAS_COMPILER_FEATURE(address_sanitizer)
+#define HAVE_SANITIZER_ADDRESS 1
+#define HAVE_SANITIZER_LEAK 1
+#elif defined(LEAK_SANITIZER) || HAS_COMPILER_FEATURE(leak_sanitizer)
+#define HAVE_SANITIZER_ADDRESS 0
+#define HAVE_SANITIZER_LEAK 1
+#else
+#define HAVE_SANITIZER_ADDRESS 0
+#define HAVE_SANITIZER_LEAK 0
+#endif
+
+#if defined(MEMORY_SANITIZER) || HAS_COMPILER_FEATURE(memory_sanitizer)
+#define HAVE_SANITIZER_MEMORY 1
+#else
+#define HAVE_SANITIZER_MEMORY 0
+#endif
+
+#if defined(THREAD_SANITIZER) || HAS_COMPILER_FEATURE(thread_sanitizer)
+#define HAVE_SANITIZER_THREAD 1
+#else
+#define HAVE_SANITIZER_THREAD 0
+#endif
+
+#if defined(UNDEFINED_SANITIZER) || HAS_COMPILER_FEATURE(undefined_sanitizer)
+#define HAVE_SANITIZER_UNDEFINED 1
+#else
+#define HAVE_SANITIZER_UNDEFINED 0
+#endif
+
+#if HAVE_SANITIZER_ADDRESS || HAVE_SANITIZER_LEAK || HAVE_SANITIZER_MEMORY || \
+	HAVE_SANITIZER_THREAD || HAVE_SANITIZER_UNDEFINED
+#define HAVE_SANITIZER 1
+#else
+#define HAVE_SANITIZER 0
+#endif
+
 static const char * const check_subcommands[] = { "feature", NULL };
 static struct option check_options[] = {
 	OPT_BOOLEAN('q', "quiet", &quiet, "do not show any warnings or messages"),
@@ -47,6 +90,12 @@ struct feature_status supported_features[] = {
 	FEATURE_STATUS("libunwind", HAVE_LIBUNWIND_SUPPORT),
 	FEATURE_STATUS("lzma", HAVE_LZMA_SUPPORT),
 	FEATURE_STATUS("numa_num_possible_cpus", HAVE_LIBNUMA_SUPPORT),
+	FEATURE_STATUS("sanitizer", HAVE_SANITIZER),
+	FEATURE_STATUS("sanitizer_address", HAVE_SANITIZER_ADDRESS),
+	FEATURE_STATUS("sanitizer_leak", HAVE_SANITIZER_LEAK),
+	FEATURE_STATUS("sanitizer_memory", HAVE_SANITIZER_MEMORY),
+	FEATURE_STATUS("sanitizer_thread", HAVE_SANITIZER_THREAD),
+	FEATURE_STATUS("sanitizer_undefined", HAVE_SANITIZER_UNDEFINED),
 	FEATURE_STATUS("syscall_table", HAVE_SYSCALL_TABLE_SUPPORT),
 	FEATURE_STATUS("zlib", HAVE_ZLIB_SUPPORT),
 	FEATURE_STATUS("zstd", HAVE_ZSTD_SUPPORT),
diff --git a/tools/perf/tests/shell/annotate.sh b/tools/perf/tests/shell/annotate.sh
index 1590a37363de..199f547e656d 100755
--- a/tools/perf/tests/shell/annotate.sh
+++ b/tools/perf/tests/shell/annotate.sh
@@ -4,6 +4,12 @@
 
 set -e
 
+if perf check feature -q sanitizer
+then
+  echo "Skip test with sanitizers due to differing assembly code"
+  exit 2
+fi
+
 shelldir=$(dirname "$0")
 
 # shellcheck source=lib/perf_has_symbol.sh
-- 
2.47.0.105.g07ac214952-goog