59e83c0187
Adding selftest that puts kprobe.multi on bpf_fentry_test1 that calls bpf_kfunc_common_test kfunc which has 3 perf event kprobes and 1 kprobe.multi attached. Because fprobe (kprobe.multi attach layear) does not have strict recursion check the kprobe's bpf_prog_active check is hit for test2-5. Disabling this test for arm64, because there's no fprobe support yet. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Tested-by: Song Liu <song@kernel.org> Reviewed-by: Song Liu <song@kernel.org> Acked-by: Hou Tao <houtao1@huawei.com> Link: https://lore.kernel.org/bpf/20230920213145.1941596-9-jolsa@kernel.org
48 lines
816 B
C
48 lines
816 B
C
// SPDX-License-Identifier: GPL-2.0
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#include "vmlinux.h"
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#include <bpf/bpf_helpers.h>
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#include <bpf/bpf_tracing.h>
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#include "../bpf_testmod/bpf_testmod_kfunc.h"
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char _license[] SEC("license") = "GPL";
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/*
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* No tests in here, just to trigger 'bpf_fentry_test*'
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* through tracing test_run
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*/
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SEC("fentry/bpf_modify_return_test")
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int BPF_PROG(trigger)
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{
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return 0;
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}
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SEC("kprobe.multi/bpf_fentry_test1")
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int test1(struct pt_regs *ctx)
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{
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bpf_kfunc_common_test();
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return 0;
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}
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SEC("kprobe/bpf_kfunc_common_test")
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int test2(struct pt_regs *ctx)
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{
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return 0;
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}
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SEC("kprobe/bpf_kfunc_common_test")
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int test3(struct pt_regs *ctx)
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{
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return 0;
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}
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SEC("kprobe/bpf_kfunc_common_test")
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int test4(struct pt_regs *ctx)
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{
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return 0;
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}
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SEC("kprobe.multi/bpf_kfunc_common_test")
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int test5(struct pt_regs *ctx)
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{
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return 0;
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}
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