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[34.66.65.137]) by smtp.gmail.com with ESMTPSA id 46e09a7af769-7f35b807227sm1141532a34.27.2026.08.07.05.32.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 07 Aug 2026 05:32:58 -0700 (PDT) Received: from [127.0.0.1] (localhost [127.0.0.1]) by localhost (Mailerdaemon) with ESMTPSA id 802C760895; Fri, 7 Aug 2026 12:32:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=marliere.net; s=dkim; t=1786105976; h=from:subject:date:message-id:to:cc:mime-version:content-type: content-transfer-encoding; bh=aBpSBcnVEC7d3b8VCypHKN8KFVfSMJhdR2dxrFOJYmQ=; b=Db1Is0pIQ3dOMju6mbp/5O1REnHMBoPTWAqsfE0Qv0lrG5Q1cHjx3P2j+N9N9osDfB/WQ2 TQU5aE36pTpS96xn6y7I7WthValEuCGlBp3F5PUFSBCJzCa/51x7MLnRb7Qn3yB1VqjGNh LMyM1Z5WQZzKUH7QHUXg+QSreZmP+zBXgdWiFRP2GB1pIJrWRHoSyFdvYZqW8HKnTWVRDZ fs/ofJ3nkYvNbRTU6ltnuoxxwaiLzsjsJvaQAKD37938LN5G2pLLsX9bVMe+mpQ9pnk5oX /l5ANzKpXlYNhRNSoaCKqh1OaVpf4dM1rXgze7cxz3+F33pVA73ZEzHzgqaIRQ== From: =?utf-8?q?Ricardo_B=2E_Marli=C3=A8re_=28SUSE=29?= Date: Fri, 07 Aug 2026 09:32:43 -0300 Subject: [PATCH 7.1.y v2] selftests/bpf: Add tests for sleepable tracepoint programs Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260807-selftests-bpf-sleepable-v2-1-f7e6566f36a1@marliere.net> X-B4-Tracking: v=1; b=H4sIAGrQdWoC/4XOQQ6CMBAF0KuYri2hFRRceQ/Doi2/UoNAOpVoC HeXoisXupw/My9/YgTvQOy4mZjH6Mj13TLI7YaZRnUXcFcvM5Op3KdFuuOE1gZQIK4Hy6kFBqV bcEBbWZd7KVPBlu/Bw7rHKp/ZIRHJk1XvmO76ChOiGg+1InDtVWeaGFGIXFw0jkLvn2u1UazO3 xaj4ILXJjO6KHaHDOXppnzr4JF0CFH9EPlvArK0Klc2E+KLqOZ5fgEA4JSwNgEAAA== X-Change-ID: 20260803-selftests-bpf-sleepable-eebf2d962201 To: Andrii Nakryiko , Eduard Zingerman , Alexei Starovoitov , Daniel Borkmann , Martin KaFai Lau , Kumar Kartikeya Dwivedi , Song Liu , Yonghong Song , Jiri Olsa , Shuah Khan , sashal@kernel.org, gregkh@linuxfoundation.org Cc: bpf@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org, Mykyta Yatsenko X-Mailer: b4 0.15.2 X-Developer-Signature: v=1; a=openssh-sha256; t=1786105970; l=2967; i=ricardo@marliere.net; h=from:subject:message-id; bh=QLheeulIJ7HGlvz8iFzvKmtgtUgQwyFXfWaZE6pfNsQ=; b=U1NIU0lHAAAAAQAAADMAAAALc3NoLWVkMjU1MTkAAAAgguRCc5X8/UX9M40lkMnr//aFGOhce x5ezt8MFNUFlqYAAAAGcGF0YXR0AAAAAAAAAAZzaGE1MTIAAABTAAAAC3NzaC1lZDI1NTE5AAAA QI1sbqPaaYnCoqAVjS7/0CJAD6XeShanEL7075pmHQDoR8FTDMKYyPWGpnevcLGwjyZ+7e077gy AWSb2I+9WMAQ= X-Developer-Key: i=ricardo@marliere.net; a=openssh; fpr=SHA256:pzhe0fJpYLz+3cZ33FFPhIfaUElk9CXPFFXmalIH+1g X-Last-TLS-Session-Version: TLSv1.3 From: Mykyta Yatsenko [ Upstream commit 8a20655749c625dcc4debdfdeeaa0cf8bb85c203 ] Cover all three sleepable tracepoint types (tp_btf.s, raw_tp.s, tp.s) and sys_exit (via bpf_task_pt_regs) with functional tests using bpf_copy_from_user() on getcwd. Verify alias and bare SEC variants, bpf_prog_test_run_raw_tp() with BPF_F_TEST_RUN_ON_CPU rejection, attach-time rejection on non-faultable tracepoints, and load-time rejection for sleepable tp_btf on non-faultable tracepoints. [ rbm: Removed hunks from (new) files: tools/testing/selftests/bpf/prog_tests/sleepable_tracepoints.c tools/testing/selftests/bpf/progs/test_sleepable_tracepoints.c tools/testing/selftests/bpf/progs/test_sleepable_tracepoints_fail.c These rely on libbpf's ".s" tracepoint section handlers (0cd420a6f40c7) and on kernel-side sleepable tracepoint runtime support (439ebd5b5708, 12628ffaf98b, 57918341dd19), none of which are backported here; kept only the verifier/sleepable.c hunk, which is correct and needed on its own. ] Signed-off-by: Mykyta Yatsenko Acked-by: Kumar Kartikeya Dwivedi Link: https://lore.kernel.org/bpf/20260422-sleepable_tracepoints-v13-6-9900= 5dff21ef@meta.com Signed-off-by: Kumar Kartikeya Dwivedi --- Changes in v2: - Dropped hunks which miss dependencies - Added a small note about it in the commit - Link to v1: https://patch.msgid.link/20260805-selftests-bpf-sleepable-v1-= 1-e29fa5af4119@marliere.net --- tools/testing/selftests/bpf/verifier/sleepable.c | 17 +++++++++++++++-- 1 file changed, 15 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/bpf/verifier/sleepable.c b/tools/testi= ng/selftests/bpf/verifier/sleepable.c index c2b7f5ebf168..6dabc5522945 100644 --- a/tools/testing/selftests/bpf/verifier/sleepable.c +++ b/tools/testing/selftests/bpf/verifier/sleepable.c @@ -76,7 +76,20 @@ .runs =3D -1, }, { - "sleepable raw tracepoint reject", + "sleepable raw tracepoint accept", + .insns =3D { + BPF_MOV64_IMM(BPF_REG_0, 0), + BPF_EXIT_INSN(), + }, + .prog_type =3D BPF_PROG_TYPE_TRACING, + .expected_attach_type =3D BPF_TRACE_RAW_TP, + .kfunc =3D "sys_enter", + .result =3D ACCEPT, + .flags =3D BPF_F_SLEEPABLE, + .runs =3D -1, +}, +{ + "sleepable raw tracepoint reject non-faultable", .insns =3D { BPF_MOV64_IMM(BPF_REG_0, 0), BPF_EXIT_INSN(), @@ -85,7 +98,7 @@ .expected_attach_type =3D BPF_TRACE_RAW_TP, .kfunc =3D "sched_switch", .result =3D REJECT, - .errstr =3D "Only fentry/fexit/fsession/fmod_ret, lsm, iter, uprobe, and = struct_ops programs can be sleepable", + .errstr =3D "Sleepable program cannot attach to non-faultable tracepoint", .flags =3D BPF_F_SLEEPABLE, .runs =3D -1, }, --- base-commit: 74b69060ba6e44e20c2e4dc1847eca21db6e4a7c change-id: 20260803-selftests-bpf-sleepable-eebf2d962201 Best regards, -- =20 Ricardo B. Marli=C3=A8re (SUSE)