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Wed, 11 Feb 2026 10:12:54 -0800 (PST) Received: from localhost ([2a03:2880:10ff:40::]) by smtp.gmail.com with ESMTPSA id 586e51a60fabf-40eaf16c383sm1789828fac.14.2026.02.11.10.12.53 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 11 Feb 2026 10:12:53 -0800 (PST) From: Kumar Kartikeya Dwivedi To: bpf@vger.kernel.org Cc: Alexei Starovoitov , Andrii Nakryiko , Daniel Borkmann , Martin KaFai Lau , Eduard Zingerman , Mykyta Yatsenko , kkd@meta.com, kernel-team@meta.com Subject: [RFC PATCH bpf-next v1 3/6] bpf: Enable rqspinlock in tracing progs Date: Wed, 11 Feb 2026 10:12:43 -0800 Message-ID: <20260211181248.3040142-4-memxor@gmail.com> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260211181248.3040142-1-memxor@gmail.com> References: <20260211181248.3040142-1-memxor@gmail.com> Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=848; h=from:subject; bh=cw6biPi8Vm6QwIoonUYw8vEf+IzYIiChxfXRjaypQaQ=; b=owEBbQKS/ZANAwAIAUzgyIZIvxHKAcsmYgBpjMUeuuSKf/Z+bKjTbSibeLwEVi1mv8b9Q6e+a09s 1VFuURuJAjMEAAEIAB0WIQRLvip+Buz51YI8YRFM4MiGSL8RygUCaYzFHgAKCRBM4MiGSL8Ryia5EA CRdj6Aaf02j8tYG1SumAzmQ68710F/kkP7xN9JgfQTRzfkeJUb8+GfErHJMoybXOo90yjD+GUa+E27 1QfaopKLd4iQwTX4rmKBKRauaNU5aI8xxrtTba/UUeezVBoNujlPc9jufdybstq33qlIJo5hF0U7sr CAG2/4ciqb2P/6Nf2TYGRHmC4wCdvnO4xHMSa+Pl/3THQ23fHxknEJ/RnoK2DtuI/kHpGwBgMcAlKv +k4B6idu56EXSWt8VW0gHEjy/2cb1oeM82NNPsQALK5gNsvToERrW1PTvffu36ukkv2dioF1fX1m8h AyI9XbsW7lwMQw4sqalJZAL5IbLYZGu5wGR/fa+zsEJl2SBbjDes7WAoWfUpVDZU4+beUiMPhbdGSo m0Fc31sXq6IIfnnBQYwsgBZSEqLSL1m+ZnP8bXgbyfpbAhgDYhmZ5r+eDBoRVlRyulfZxpyn7c0KJ+ fd+iiQp6NuZGXWouLPGCS96y2uHHm3luRtG+DQUDlBS9JHR8u1S4EVzPn55c63kMu2NC7/luvKUywN N/EVrR8ErCCBeiuVvm9GYm4U5hiqYfmQ2PPimDyw8VnQhOwdaCDI7+yimZcutTsIaexdnN6r8Mh6hI ISO9qbYDjf9gPE3ck3uhqRQqBSLVRycbo3eByfRgZTuRN3LcFZEfraTF/PiA== X-Developer-Key: i=memxor@gmail.com; a=openpgp; fpr=4BBE2A7E06ECF9D5823C61114CE0C88648BF11CA Content-Transfer-Encoding: 8bit Allow using rqspinlock in tracing programs, since it is safe to acquire from any context. This permits its stress testing from any context using BPF programs. Signed-off-by: Kumar Kartikeya Dwivedi --- kernel/bpf/verifier.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c index 4acd8e848c88..fee92ff348a9 100644 --- a/kernel/bpf/verifier.c +++ b/kernel/bpf/verifier.c @@ -21542,7 +21542,8 @@ static int check_map_prog_compatibility(struct bpf_verifier_env *env, return -EINVAL; } - if (is_tracing_prog_type(prog_type)) { + if (is_tracing_prog_type(prog_type) && + btf_record_has_field(map->record, BPF_SPIN_LOCK)) { verbose(env, "tracing progs cannot use bpf_spin_lock yet\n"); return -EINVAL; } -- 2.47.3