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Tue, 17 Mar 2026 10:19:09 -0700 (PDT) From: Jiri Olsa X-Google-Original-From: Jiri Olsa Date: Tue, 17 Mar 2026 18:19:07 +0100 To: Leon Hwang Cc: Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko , bpf@vger.kernel.org, linux-trace-kernel@vger.kernel.org, Martin KaFai Lau , Eduard Zingerman , Song Liu , Yonghong Song , Menglong Dong , Steven Rostedt Subject: Re: [PATCHv3 bpf-next 22/24] selftests/bpf: Add tracing multi attach fails test Message-ID: References: <20260316075138.465430-1-jolsa@kernel.org> <20260316075138.465430-23-jolsa@kernel.org> <58218abd-dc9e-4197-93eb-5bd0d6c99863@linux.dev> Precedence: bulk X-Mailing-List: linux-trace-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <58218abd-dc9e-4197-93eb-5bd0d6c99863@linux.dev> On Tue, Mar 17, 2026 at 11:06:58AM +0800, Leon Hwang wrote: SNIP > > + /* fail#3 pattern and cookies */ > > + opts.ids = NULL; > > + opts.cnt = 2; > > + opts.cookies = cookies; > > + > > + skel->links.test_fentry = bpf_program__attach_tracing_multi(skel->progs.test_fentry, > > + "bpf_fentry_test*", &opts); > > + if (!ASSERT_ERR_PTR(skel->links.test_fentry, "bpf_program__attach_tracing_multi")) > > + goto cleanup; > > + > > + /* fail#4 bogus pattern */ > > + skel->links.test_fentry = bpf_program__attach_tracing_multi(skel->progs.test_fentry, > > + "bpf_not_really_a_function*", NULL); > > + if (!ASSERT_ERR_PTR(skel->links.test_fentry, "bpf_program__attach_tracing_multi")) > > + goto cleanup; > > + > > + /* fail#5 abnormal cnt */ > > + opts.ids = ids; > > + opts.cnt = INT_MAX; > > + > > + skel->links.test_fentry = bpf_program__attach_tracing_multi(skel->progs.test_fentry, > > + NULL, &opts); > > + if (!ASSERT_ERR_PTR(skel->links.test_fentry, "bpf_program__attach_tracing_multi")) > > + goto cleanup; > > + > > + /* fail#6 attach sleepable program to not-allowed function */ > > + ids2 = get_ids(func, 1, NULL); > > + if (!ASSERT_OK_PTR(ids, "get_ids")) > ^ ids2 ? yes > > > + goto cleanup; > > + > > + opts.ids = ids2; > > + opts.cnt = 1; > > + > > + skel->links.test_fentry_s = bpf_program__attach_tracing_multi(skel->progs.test_fentry_s, > > + NULL, &opts); > > + ASSERT_ERR_PTR(skel->links.test_fentry, "bpf_program__attach_tracing_multi"); > ^ test_fentry_s ? yes, will fix, thnx jirka