[PATCH v2 10/11] perf test: Drop samples without an IP in the dlfilter test

[Arnaldo Carvalho de Melo <acme@kernel.org>]

Since v7.3 the kernel zeroes PERF_SAMPLE_IP when a userspace-only event
skids into kernel mode, so that kernel register state is not exposed to
an unprivileged event (166f10836a653dfa "perf/core: Fix kernel register
info leak via hardware skid").

The test dlfilter keeps those samples, and the check that nothing but
test_loop survives then trips on their lines: the comm column reads
"perf".  Drop them, which is what the test wants, everything except
test_loop must be filtered out.

Fixes: 199d5e872a9ce737 ("perf tests script dlfilter: Add a dlfilter test")
Cc: Ian Rogers <irogers@google.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@kernel.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/perf/tests/shell/script_dlfilter.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/tests/shell/script_dlfilter.sh b/tools/perf/tests/shell/script_dlfilter.sh
index 88222280f6094fd0..797cd9ae84141f64 100755
--- a/tools/perf/tests/shell/script_dlfilter.sh
+++ b/tools/perf/tests/shell/script_dlfilter.sh
@@ -46,7 +46,7 @@ int filter_event(void *data, const struct perf_dlfilter_sample *sample, void *ct
 	const struct perf_dlfilter_al *al;
 
 	if (!sample->ip)
-		return 0;
+		return 1;
 
 	al = perf_dlfilter_fns.resolve_ip(ctx);
 	if (!al || !al->sym || strcmp(al->sym, "test_loop"))
-- 
2.56.0