From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from relay.hostedemail.com (smtprelay0013.hostedemail.com [216.40.44.13]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 907AF481AA3; Wed, 13 May 2026 15:13:37 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=216.40.44.13 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778685219; cv=none; b=BDnQw0H1k5qUFIQLdekmfz02gmERp4N10lJWAQhR//7Kmw4WZ2EwBlqA1v3R0YcDmPh8m70zgVrPzbb2Wse0X+X/Fhwaytr/NzuGXCxIPFbymR5rcyc/MxepCqJ7FeOKwasWEHl3iW4cgIbf+YPboRfbCGs/mv7JDGoiIBL/YQ4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778685219; c=relaxed/simple; bh=UndeeBAudNcgPiHmWG9NCNOwnjQQo6sIys/fSPjKAPA=; h=Date:From:To:Cc:Subject:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=K6Xty1h9zPve4i7WvgGP7xlkaB2oYNhSJcprmATcf2WmSj6w0/5Ii0UleQWQKaJcfMaeNqUD4Hksshiio+zlIwnjWO47jzRBtCOQ9M/Kdm41EmJ16QPIMzpNxaXzFXIshXsg/cZof5Zwn+bG9TwDKPdeK5qsW6vzgLrktxNTerE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=goodmis.org; spf=pass smtp.mailfrom=goodmis.org; arc=none smtp.client-ip=216.40.44.13 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=goodmis.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=goodmis.org Received: from omf16.hostedemail.com (lb01a-stub [10.200.18.249]) by unirelay08.hostedemail.com (Postfix) with ESMTP id E10DB1401C6; Wed, 13 May 2026 15:13:33 +0000 (UTC) Received: from [HIDDEN] (Authenticated sender: rostedt@goodmis.org) by omf16.hostedemail.com (Postfix) with ESMTPA id 5BE272000E; Wed, 13 May 2026 15:13:28 +0000 (UTC) Date: Wed, 13 May 2026 11:13:31 -0400 From: Steven Rostedt To: Alexei Starovoitov Cc: Aaron Tomlin , Jonathan Corbet , Song Liu , KP Singh , Matt Bobrowski , Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko , Eduard , Kumar Kartikeya Dwivedi , Masami Hiramatsu , Shuah Khan , Jiri Olsa , Martin KaFai Lau , Yonghong Song , Mathieu Desnoyers , Randy Dunlap , neelx@suse.com, sean@ashe.io, chjohnst@gmail.com, steve@abita.co, mproche@gmail.com, nick.lange@gmail.com, "open list:DOCUMENTATION" , LKML , bpf , linux-trace-kernel Subject: Re: [RFC PATCH v3] bpf: introduce TAINT_UNSAFE_BPF for mutating helpers Message-ID: <20260513111331.7bede512@gandalf.local.home> In-Reply-To: References: <20260503164700.548164-1-atomlin@atomlin.com> X-Mailer: Claws Mail 3.20.0git84 (GTK+ 2.24.33; x86_64-pc-linux-gnu) Precedence: bulk X-Mailing-List: linux-doc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Stat-Signature: 18geb9x55ru3chwt6uafjionag3oe1yt X-Rspamd-Server: rspamout08 X-Rspamd-Queue-Id: 5BE272000E X-Session-Marker: 726F737465647440676F6F646D69732E6F7267 X-Session-ID: U2FsdGVkX1+7R7zxbXBV6rlQFQ0Ye5/tl281iYTF8WE= X-HE-Tag: 1778685208-537794 X-HE-Meta: U2FsdGVkX1+x7ra4uXHhLxM0a25M9aCoPDW3ZqIlq9S7q9SyTpMscF+XaALiXSKTKjK1qSM1kG4P3XpZr8H4FvLc54S2rZuV7N1O6V0ZE0ZbNsHPIpDzkkRsm1nml/Kq1e+4eoF9XM7lAI4b/ftkikplSw/Wr18s5nUlvMA+GofiF/4Cb67OMC14P6ChPMM0ULN7I/YHU4w1ujDAv/TFSo3WdGlpF3BIz6USQ981Ff+FiT9Z/pNq1BONSXhstcCK72Q6TfXDqCuOaC/udV30tqSjEaBES4PnYCvud839jgU+Yig5WrieniekGkTWX9NmRneIS+uPG6xvy0iQo8NWWJL+Lr+PIXk0 On Sun, 3 May 2026 21:51:49 +0200 Alexei Starovoitov wrote: > Nack. > > Please stop this spam. > We're not doing it. These helpers have been around for a long time. > There was no need to taint then. There is no need to taint now. Hi Alexei, I'm wondering if there's a way to see what modifications BPF programs are doing to the kernel? I try to make it easy to see what modifications ftrace has done (like the enabled_functions file), because I like to know how my kernel is modified since boot up. Thus, it would be nice to know if BPF is modifying anything in user space or just what BPF programs are loaded. Note, I'm agnostic to this change, it just brought up a previous concern of mine when I read it. Thanks, -- Steve