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35f14dbd2f
These are regression tests to ensure we don't end up in invalid runtime state for helpers that execute callbacks multiple times. It exercises the fixes to verifier callback handling for reference state in previous patches. Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com> Link: https://lore.kernel.org/r/20220823013226.24988-1-memxor@gmail.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>
48 lines
1.5 KiB
C
48 lines
1.5 KiB
C
// SPDX-License-Identifier: GPL-2.0
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#include "bpf/libbpf.h"
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#include <test_progs.h>
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#include <network_helpers.h>
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#include "cb_refs.skel.h"
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static char log_buf[1024 * 1024];
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struct {
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const char *prog_name;
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const char *err_msg;
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} cb_refs_tests[] = {
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{ "underflow_prog", "reference has not been acquired before" },
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{ "leak_prog", "Unreleased reference" },
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{ "nested_cb", "Unreleased reference id=4 alloc_insn=2" }, /* alloc_insn=2{4,5} */
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{ "non_cb_transfer_ref", "Unreleased reference id=4 alloc_insn=1" }, /* alloc_insn=1{1,2} */
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};
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void test_cb_refs(void)
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{
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LIBBPF_OPTS(bpf_object_open_opts, opts, .kernel_log_buf = log_buf,
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.kernel_log_size = sizeof(log_buf),
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.kernel_log_level = 1);
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struct bpf_program *prog;
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struct cb_refs *skel;
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int i;
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for (i = 0; i < ARRAY_SIZE(cb_refs_tests); i++) {
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LIBBPF_OPTS(bpf_test_run_opts, run_opts,
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.data_in = &pkt_v4,
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.data_size_in = sizeof(pkt_v4),
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.repeat = 1,
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);
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skel = cb_refs__open_opts(&opts);
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if (!ASSERT_OK_PTR(skel, "cb_refs__open_and_load"))
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return;
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prog = bpf_object__find_program_by_name(skel->obj, cb_refs_tests[i].prog_name);
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bpf_program__set_autoload(prog, true);
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if (!ASSERT_ERR(cb_refs__load(skel), "cb_refs__load"))
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bpf_prog_test_run_opts(bpf_program__fd(prog), &run_opts);
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if (!ASSERT_OK_PTR(strstr(log_buf, cb_refs_tests[i].err_msg), "expected error message")) {
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fprintf(stderr, "Expected: %s\n", cb_refs_tests[i].err_msg);
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fprintf(stderr, "Verifier: %s\n", log_buf);
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}
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cb_refs__destroy(skel);
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}
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}
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