From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 85900C433E0 for ; Fri, 19 Mar 2021 04:44:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5326164F4D for ; Fri, 19 Mar 2021 04:44:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233775AbhCSEnf (ORCPT ); Fri, 19 Mar 2021 00:43:35 -0400 Received: from wforward3-smtp.messagingengine.com ([64.147.123.22]:40773 "EHLO wforward3-smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233489AbhCSEnE (ORCPT ); Fri, 19 Mar 2021 00:43:04 -0400 Received: from compute4.internal (compute4.nyi.internal [10.202.2.44]) by mailforward.west.internal (Postfix) with ESMTP id 5E315438; Fri, 19 Mar 2021 00:43:03 -0400 (EDT) Received: from mailfrontend1 ([10.202.2.162]) by compute4.internal (MEProxy); Fri, 19 Mar 2021 00:43:03 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:content-transfer-encoding:content-type :date:from:in-reply-to:message-id:mime-version:references :subject:to:x-me-proxy:x-me-proxy:x-me-sender:x-me-sender :x-sasl-enc; s=fm2; bh=nL3hpNbf377wRsiyYH6gx7Vh290cbGwtiCgAF8Veq yw=; b=AQ+i35EHhZUhX29N8/hh3kGbkakrzO9FSLv7tXlI1Fw2NVMIWxATr5ruO dvwb++/zurMqW8uGJrC6pU4Iyl6FSu6yUgxPDvZg1vPZiGUmw0Q2nycJ/8JSYOo/ +VxNjlB7HVTs+SnXJy1ucHiPJG48YQeMvxiikMyToMluANnO9W24Y5n6YCurBZOC UwzLe7Zw1DPciTlTekJbvGSds5nvB1wn6LWtq72RfQYc3LtaSgLvNtYSbSDJCP8y jJybDq11gMr1niFa8OqyK/gJfQl1EthFHePnkqEA3MXSQxr4FG9B19YAsksPgNuR HRLoUBcgaZbNMoHHReyEyNdbgFUow== X-ME-Sender: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgeduledrudefjedgjeegucetufdoteggodetrfdotf fvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfqfgfvpdfurfetoffkrfgpnffqhgen uceurghilhhouhhtmecufedttdenucesvcftvggtihhpihgvnhhtshculddquddttddmne cujfgurheptggguffhjgffgffkfhfvofesthejmhdthhdtvdenucfhrhhomheptfgrfhgr vghlucffrghvihguucfvihhnohgtohcuoehrrghfrggvlhguthhinhhotghosehusghunh htuhdrtghomheqnecuggftrfgrthhtvghrnhepuefgffduffekgeegfeefgeekgfekgfdu uddujeelkeefhedvieekteehjeejieejnecukfhppedufeekrddvtdegrddviedrudeine cuvehluhhsthgvrhfuihiivgeptdenucfrrghrrghmpehmrghilhhfrhhomheprhgrfhgr vghlughtihhnohgtohesuhgsuhhnthhurdgtohhm X-ME-Proxy: Received: from [192.168.100.154] (unknown [138.204.26.16]) by mail.messagingengine.com (Postfix) with ESMTPA id 7BE2C24005B; Fri, 19 Mar 2021 00:43:01 -0400 (EDT) Content-Type: text/plain; charset=us-ascii; delsp=yes; format=flowed Mime-Version: 1.0 (Mac OS X Mail 14.0 \(3654.60.0.2.21\)) Subject: Re: [BPF CO-RE clarification] Use CO-RE on older kernel versions. From: Rafael David Tinoco In-Reply-To: Date: Fri, 19 Mar 2021 01:42:58 -0300 Cc: Arnaldo Carvalho de Melo , Vamsi Kodavanty , bpf X-Mao-Original-Outgoing-Id: 637821672.1910861-a1ccfa9a29922f6dee664fe38525f7f3 Content-Transfer-Encoding: 7bit Message-Id: References: <20210303181457.172434-1-rafaeldtinoco@ubuntu.com> <043B1B9B-EEF7-49CD-88AF-29A2A3E97304@ubuntu.com> <67E3C788-2835-4793-8A9C-51C5D807C294@ubuntu.com> <7BEF1010-5D4A-4C6F-8059-BD18A4A9EA6F@ubuntu.com> To: Andrii Nakryiko X-Mailer: Apple Mail (2.3654.60.0.2.21) Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org >> Any clue on why this happens ? > > So seems like you figured out kernel_version check, right? And it > seems like log_buf is not really a problem as well? Or it still > causing issues? > All good here Andrii. Working on the legacy kprobe and kern_version patches and will address anything else there. tks, cheers