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Thu, 15 Oct 2026 23:57:26 -0700 (PDT) Received: from [58.206.202.11] ([104.28.215.70]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-3acc98139ccsm1242020a91.0.2026.10.15.23.57.23 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 15 Oct 2026 23:57:25 -0700 (PDT) Message-ID: <6ad1cad5.856c1b21.18f9b7.a2c3@mx.google.com> Content-Type: text/plain; charset="utf-8" Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: base64 From: Haoran Wang To: rostedt@goodmis.org, mhiramat@kernel.org Cc: linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org, mathieu.desnoyers@efficios.com, haoranwangsec@gmail.com Date: Fri, 16 Oct 2026 14:57:22 +0800 Subject: [PATCH] tracing: reject trace events with an empty TP_STRUCT__entry RnJvbSAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwIE1vbiBTZXAgMTcg MDA6MDA6MDAgMjAwMQpGcm9tOiBIYW9yYW4gV2FuZyA8aGFvcmFud2FuZ3NlY0BnbWFpbC5jb20+ CkRhdGU6IEZyaSwgMTYgT2N0IDIwMjYgMTU6MTA6MDAgKzA4MDAKU3ViamVjdDogW1BBVENIXSB0 cmFjaW5nOiByZWplY3QgdHJhY2UgZXZlbnRzIHdpdGggYW4gZW1wdHkgVFBfU1RSVUNUX19lbnRy eQoKdHJhY2VfZXZlbnRfZ2V0X29mZnNldHMoKSB1bmNvbmRpdGlvbmFsbHkgZGVyZWZlcmVuY2Vz IHRoZSBmaXJzdCBlbnRyeSBvZgphbiBldmVudCBjbGFzcydzIGZpZWxkcyBsaXN0IHRocm91Z2gg bGlzdF9maXJzdF9lbnRyeSgpLiAgQSB0cmFjZXBvaW50CnRoYXQgZGVjbGFyZXMgYW4gZW1wdHkg VFBfU1RSVUNUX19lbnRyeSBuZXZlciBwb3B1bGF0ZXMgdGhhdCBsaXN0LiBJdHMKZmllbGRzX2Fy cmF5IGhvbGRzIG9ubHkgdGhlIHRlcm1pbmF0aW5nIHNlbnRpbmVsLCBzbyBsaXN0X2ZpcnN0X2Vu dHJ5KCkKcmV0dXJucyB0aGUgbGlzdCBoZWFkIGl0c2VsZiBhbmQgdGhlIGZvbGxvd2luZyB0YWls LT5vZmZzZXQgKyB0YWlsLT5zaXplCnJlYWRzIG1lbW9yeSBwYXN0IHN0cnVjdCB0cmFjZV9ldmVu dF9jbGFzcy4gIFRoZSBjb3JydXB0ZWQgcmVzdWx0IGlzCnRoZW4gdXNlZCBhcyB0aGUgQlBGIGNv bnRleHQtc2l6ZSBib3VuZCBpbiBfX3BlcmZfZXZlbnRfc2V0X2JwZl9wcm9nKCksCndoaWNoIGxl dHMgY29udGV4dC1yZWFkaW5nIEJQRiBwcm9ncmFtcyBhdHRhY2ggdG8gYSB6ZXJvLWZpZWxkIHRy YWNlcG9pbnQKd2hlbiB0aGV5IHNob3VsZCBiZSByZWplY3RlZCB3aXRoIC1FQUNDRVMuCgpSZWpl Y3Qgc3VjaCBldmVudHMgYXQgcmVnaXN0cmF0aW9uIHRvIGZpeCB0aGlzIGJ1Zy4gZXZlbnRfaW5p dCgpIGlzIHRoZQp1bml2ZXJzYWwgY2hva2Vwb2ludCBpbnZva2VkIGZvciBib3RoIGVhcmx5LWJv b3QgYW5kIG1vZHVsZSBldmVudHMsIGFuZAppdHMgcmV0dXJuIGlzIGVuZm9yY2VkIGJ5IF9fcmVn aXN0ZXJfZXZlbnQoKSwgd2hpY2ggcmVmdXNlcyB0byBhZGQgdGhlIGNhbGwKdG8gZnRyYWNlX2V2 ZW50cy4gIEFuIGV2ZW50IHdob3NlIGZpZWxkc19hcnJheVswXS50eXBlIGlzIE5VTEwgKHRoZQpl bXB0eS1UUF9TVFJVQ1RfX2VudHJ5IHNlbnRpbmVsKSBpcyByZWplY3RlZCB3aXRoIC1FSU5WQUwg YmVmb3JlCnRyYWNlX2V2ZW50X2dldF9vZmZzZXRzKCkgY2FuIGJlIHJlYWNoZWQuCgpTaWduZWQt b2ZmLWJ5OiBIYW9yYW4gV2FuZyA8aGFvcmFud2FuZ3NlY0BnbWFpbC5jb20+Ci0tLQoga2VybmVs L3RyYWNlL3RyYWNlX2V2ZW50cy5jIHwgNCArKysrCiAxIGZpbGUgY2hhbmdlZCwgNCBpbnNlcnRp b25zKCspCgpkaWZmIC0tZ2l0IGEva2VybmVsL3RyYWNlL3RyYWNlX2V2ZW50cy5jIGIva2VybmVs L3RyYWNlL3RyYWNlX2V2ZW50cy5jCi0tLSBhL2tlcm5lbC90cmFjZS90cmFjZV9ldmVudHMuYwor KysgYi9rZXJuZWwvdHJhY2UvdHJhY2VfZXZlbnRzLmMKQEAgLTMyNzksNiArMzI3OSwxMCBAQCBz dGF0aWMgaW50IGV2ZW50X2luaXQoc3RydWN0IHRyYWNlX2V2ZW50X2NhbGwgKmNhbGwpCiAJaWYg KFdBUk5fT04oIW5hbWUpKQogCQlyZXR1cm4gLUVJTlZBTDsKIAorCWlmIChjYWxsLT5jbGFzcy0+ ZmllbGRzX2FycmF5ICYmCisJICAgICFjYWxsLT5jbGFzcy0+ZmllbGRzX2FycmF5WzBdLnR5cGUp CisJCXJldHVybiAtRUlOVkFMOworCiAJaWYgKGNhbGwtPmNsYXNzLT5yYXdfaW5pdCkgewogCQly ZXQgPSBjYWxsLT5jbGFzcy0+cmF3X2luaXQoY2FsbCk7CiAJCWlmIChyZXQgPCAwICYmIHJldCAh PSAtRU5PU1lTKQotLSAKMi40My4wCg==