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selftest/bpf: Fix kprobe_multi bench test 

With [1] the available_filter_functions file contains records
starting with __ftrace_invalid_address___ and marking disabled
entries.

We need to filter them out for the bench test to pass only
resolvable symbols to kernel.

[1] commit b39181f7c6 ("ftrace: Add FTRACE_MCOUNT_MAX_OFFSET to avoid adding weak function")

Fixes: b39181f7c6 ("ftrace: Add FTRACE_MCOUNT_MAX_OFFSET to avoid adding weak function")
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Link: https://lore.kernel.org/r/20220615112118.497303-5-jolsa@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Jiri Olsa 2022-06-15 13:21:18 +02:00 committed by Alexei Starovoitov
parent eb5fb03256
commit 730067022c
1 changed files with 3 additions and 0 deletions
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3
tools/testing/selftests/bpf/prog_tests/kprobe_multi_test.c
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@ -364,6 +364,9 @@ static int get_syms(char ***symsp, size_t *cntp)
continue;
if (!strncmp(name, "rcu_", 4))
continue;
if (!strncmp(name, "__ftrace_invalid_address__",
sizeof("__ftrace_invalid_address__") - 1))
continue;
err = hashmap__add(map, name, NULL);
if (err) {
free(name);