Commit be16ddea authored by Yafang Shao's avatar Yafang Shao Committed by Alexei Starovoitov
Browse files

selftests/bpf: Add selftest for attaching fexit to __noreturn functions 



The reuslt:

  $ tools/testing/selftests/bpf/test_progs --name=fexit_noreturns
  #99/1    fexit_noreturns/noreturns:OK
  #99      fexit_noreturns:OK
  Summary: 1/1 PASSED, 0 SKIPPED, 0 FAILED

Signed-off-by: default avatarYafang Shao <laoar.shao@gmail.com>
Link: https://lore.kernel.org/r/20250318114447.75484-3-laoar.shao@gmail.com


Signed-off-by: default avatarAlexei Starovoitov <ast@kernel.org>
parent cfe816d4

tools/testing/selftests/bpf/prog_tests/fexit_noreturns.c

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+9 −0
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// SPDX-License-Identifier: GPL-2.0



#include <test_progs.h>

#include "fexit_noreturns.skel.h"



void test_fexit_noreturns(void)

{

	RUN_TESTS(fexit_noreturns);

}

tools/testing/selftests/bpf/progs/fexit_noreturns.c

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// SPDX-License-Identifier: GPL-2.0



#include <linux/bpf.h>

#include <bpf/bpf_helpers.h>

#include <bpf/bpf_tracing.h>

#include "bpf_misc.h"



char _license[] SEC("license") = "GPL";



SEC("fexit/do_exit")

__failure __msg("Attaching fexit/fmod_ret to __noreturn functions is rejected.")

int BPF_PROG(noreturns)

{

	return 0;

}