From unknown Fri Jun 13 10:56:14 2025 X-Loop: help-debbugs@gnu.org Subject: bug#45633: bcc and bpftrace require kernel headers from system Resent-From: John Soo Original-Sender: "Debbugs-submit" Resent-CC: bug-guix@gnu.org Resent-Date: Sun, 03 Jan 2021 18:33:03 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: report 45633 X-GNU-PR-Package: guix X-GNU-PR-Keywords: To: 45633@debbugs.gnu.org X-Debbugs-Original-To: bug-guix@gnu.org Received: via spool by submit@debbugs.gnu.org id=B.16096987572633 (code B ref -1); Sun, 03 Jan 2021 18:33:03 +0000 Received: (at submit) by debbugs.gnu.org; 3 Jan 2021 18:32:37 +0000 Received: from localhost ([127.0.0.1]:38617 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1kw8BA-0000gO-MT for submit@debbugs.gnu.org; Sun, 03 Jan 2021 13:32:36 -0500 Received: from lists.gnu.org ([209.51.188.17]:36616) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1kw8B9-0000gI-Qb for submit@debbugs.gnu.org; Sun, 03 Jan 2021 13:32:36 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:44634) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kw8B9-00052q-JE for bug-guix@gnu.org; Sun, 03 Jan 2021 13:32:35 -0500 Received: from mail-pg1-x52e.google.com ([2607:f8b0:4864:20::52e]:44689) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1kw8B7-0000Tb-Bv for bug-guix@gnu.org; Sun, 03 Jan 2021 13:32:35 -0500 Received: by mail-pg1-x52e.google.com with SMTP id p18so17300642pgm.11 for ; Sun, 03 Jan 2021 10:32:31 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=asu-edu.20150623.gappssmtp.com; s=20150623; h=from:to:subject:date:message-id:mime-version; bh=+4w8BCjv6Z6P6nXGsW0HX7Y8rjunhWuBTAPe1y6R/Po=; b=fa1F2AOXbtRoxV7L3nHWqjN1AzMmWKEjpP2v8lHSino67Gbh0We2BfoQd9pSxVVBmI dVKC0wC5FolsQve57SZOroj+Gjl2jHmzs2BiDSUUKVPb63IDNLvG6LUCldm1TlNuyJCP +Bto81T5nAnaOipUuX9WCSlhmI5CeuhdX8G+lgFWaCJUA1RgD87A+JJFfW5ce9gvUrTb 6uESp1epUAEr63ce72CoTJmEr+jbCu7Q3uy58txZrFB9CHldQPQNSXBeFmkwiuZd/qDe TvxdVaGQ1fyzilz247LlUZw72MsEi7ag3d6QRVEnwqOKpZZaDrzvRty4pTyNzowF4+Qg 0IKA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:subject:date:message-id:mime-version; bh=+4w8BCjv6Z6P6nXGsW0HX7Y8rjunhWuBTAPe1y6R/Po=; b=mIZCLnq3duWUP3DfjopEMnQ1iDBANqPNoS4v6x4PWdU4+TWLyZSoN/psmDqGwK2Wkt 0hNH0YEGwStMpP5GfqdGb0nnopXBF2NM6BG12bFOr6GwgDD3FgZ3qgIfLvQc0v3FDcVe ywAxWsHTrPPLG/MPGvvHAq7I2yKksr4SYOZUbfb+rz0swsjBtjH5l2Q7kA4vTvj2SswC fpjUoOQWBuRAzyVDYXBIVHPL2m3rlykJtCuLm+fYe4shAMBV6EmBxRyMRlzWnScRO1ph qhYTkDJSSgj2GRbRT7Tv7V0c1/irPSp30svStOkff98cUokm2l8lDt36Ma2CfZcKFfyB 60JQ== X-Gm-Message-State: AOAM530klT0y21jr3/5g2/6Dx//CDgC2egIfa/LAXzw4v/JSocSnoRJS i92ed4zEiHQmlKqmxBClvo2jxKHHunjV9w== X-Google-Smtp-Source: ABdhPJwbn8Bz7pgYOMC+KnLBmpqHZBrbmT0FvIF2uWrFq1tk/IM/9dnHvVUASHckUYiOOdYNX6PDqQ== X-Received: by 2002:a65:6659:: with SMTP id z25mr58299122pgv.427.1609698750600; Sun, 03 Jan 2021 10:32:30 -0800 (PST) Received: from ecenter ([2600:1700:83b0:8bd0::7a8]) by smtp.gmail.com with ESMTPSA id j14sm18990246pjm.10.2021.01.03.10.32.29 for (version=TLS1_2 cipher=ECDHE-ECDSA-CHACHA20-POLY1305 bits=256/256); Sun, 03 Jan 2021 10:32:29 -0800 (PST) From: John Soo Date: Sun, 03 Jan 2021 10:32:28 -0800 Message-ID: <875z4d3m83.fsf@asu.edu> MIME-Version: 1.0 Content-Type: text/plain Received-SPF: pass client-ip=2607:f8b0:4864:20::52e; envelope-from=jsoo1@asu.edu; helo=mail-pg1-x52e.google.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-Spam-Score: -1.3 (-) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -2.3 (--) Hi Guix, When I added bcc and bpftrace to guix I didn't think much of which version of the kernel headers would be used. After a few kernel updates, it has become clear that the current-system kernel headers need to match the kernel headers the packages are compiled with. Can they be provided with a variant property? The ocaml packages that need different ocaml versions seem like a nice model on how to do the kernel headers. Thoughts? - John From unknown Fri Jun 13 10:56:14 2025 X-Loop: help-debbugs@gnu.org Subject: bug#45633: bcc and bpftrace require kernel headers from system Resent-From: Tobias Geerinckx-Rice Original-Sender: "Debbugs-submit" Resent-CC: bug-guix@gnu.org Resent-Date: Sun, 03 Jan 2021 21:41:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 45633 X-GNU-PR-Package: guix X-GNU-PR-Keywords: To: John Soo Cc: 45633@debbugs.gnu.org X-Debbugs-Original-Cc: 45633@debbugs.gnu.org, bug-guix@gnu.org Received: via spool by submit@debbugs.gnu.org id=B.160971003027476 (code B ref -1); Sun, 03 Jan 2021 21:41:02 +0000 Received: (at submit) by debbugs.gnu.org; 3 Jan 2021 21:40:30 +0000 Received: from localhost ([127.0.0.1]:38746 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1kwB70-000796-GK for submit@debbugs.gnu.org; Sun, 03 Jan 2021 16:40:30 -0500 Received: from lists.gnu.org ([209.51.188.17]:50428) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1kwB6z-00078y-19 for submit@debbugs.gnu.org; Sun, 03 Jan 2021 16:40:29 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:44502) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kwB6y-0005Qk-MY for bug-guix@gnu.org; Sun, 03 Jan 2021 16:40:28 -0500 Received: from tobias.gr ([2a02:c205:2020:6054::1]:46856) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kwB6t-0005WT-0d for bug-guix@gnu.org; Sun, 03 Jan 2021 16:40:28 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=tobias.gr; s=2018; bh=7Kex4J8zifUt2hGxesJhGLiZ1+mCy3dHPQSvMk5/+y4=; h=date:in-reply-to: references:subject:cc:to:from; b=JFPjYm0xg660O4dcnSC+upehgGIqPRin/QcxS 38tWyV035gSh386ysm6VCfk2FDYKzYqKqIt6R7za/j5BTGsUqU8nFfjMky1eavAzfggeMA 0gZVjEKGxiJ7zKkr7NtVzOEaiKe20sv5Dgitxyz7GE3M7kkYtdTS8Uqjoje6Sy7O3WQvOx Z9x57kY9Q+aRRGsdr188ZTxLxwX3YeaWRKPO4y/xb0zvF2WcpJpVujCM9suTHd/ZSPGRvL dvIEehGFqDtTuExVxzCdBXnUTiUSecCdvc/FnGxz0BgyTTzEVj7foYbxuIssFCd3RA73i6 85J/yGWuWeswMiI1D1EGpkg/A== Received: by submission.tobias.gr (OpenSMTPD) with ESMTPSA id 630ed570 (TLSv1.2:ECDHE-ECDSA-AES256-GCM-SHA384:256:NO); Sun, 3 Jan 2021 21:40:48 +0000 (UTC) BIMI-Selector: v=BIMI1; s=default; From: Tobias Geerinckx-Rice References: <875z4d3m83.fsf@asu.edu> In-reply-to: <875z4d3m83.fsf@asu.edu> Date: Sun, 03 Jan 2021 22:40:17 +0100 Message-ID: <87turxhf7i.fsf@nckx> MIME-Version: 1.0 Content-Type: multipart/signed; boundary="=-=-="; micalg=pgp-sha512; protocol="application/pgp-signature" Received-SPF: pass client-ip=2a02:c205:2020:6054::1; envelope-from=me@tobias.gr; helo=tobias.gr X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-Spam-Score: -1.4 (-) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -2.4 (--) --=-=-= Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: quoted-printable John, This reminds me of . John Soo =E5=86=99=E9=81=93=EF=BC=9A > Hi Guix, > > When I added bcc and bpftrace to guix I didn't think much of=20 > which > version of the kernel headers would be used. After a few kernel > updates, it has become clear that the current-system kernel=20 > headers need This should probably be booted-system. > to match the kernel headers the packages are compiled with. Can=20 > they be > provided with a variant property? The ocaml packages that need > different ocaml versions seem like a nice model on how to do the=20 > kernel > headers. I know exact kernel headers are needed at toolchain run time, when=20 building eBPF programmes. Are they really needed at toolchain=20 build time, too? That sounds wrong (but there are more things=20 fundamentally wrong with eBPF on Linux; ask me to rant about=20 CONFIG_IKHEADERS). Still, could pointing bcc/bpftrace to=20 booted-system headers at run time not suffice? Kind regards, T G-R --=-=-= Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iIMEARYKACsWIQT12iAyS4c9C3o4dnINsP+IT1VteQUCX/I5wg0cbWVAdG9iaWFz LmdyAAoJEA2w/4hPVW15EcwBAM+IS788ZxGg1zbMsih7NKP+JyNxBbFpb2FpS7ah 4FYuAQCBg/+d+g7x/7Zak3pRN5f2tvf8LLiB9lMK/Fs4CG4fBw== =vzkP -----END PGP SIGNATURE----- --=-=-=-- From unknown Fri Jun 13 10:56:14 2025 X-Loop: help-debbugs@gnu.org Subject: bug#45633: bcc and bpftrace require kernel headers from system Resent-From: John Soo Original-Sender: "Debbugs-submit" Resent-CC: bug-guix@gnu.org Resent-Date: Mon, 04 Jan 2021 18:11:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 45633 X-GNU-PR-Package: guix X-GNU-PR-Keywords: To: Tobias Geerinckx-Rice Cc: 45633@debbugs.gnu.org Received: via spool by 45633-submit@debbugs.gnu.org id=B45633.160978382120330 (code B ref 45633); Mon, 04 Jan 2021 18:11:02 +0000 Received: (at 45633) by debbugs.gnu.org; 4 Jan 2021 18:10:21 +0000 Received: from localhost ([127.0.0.1]:60246 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1kwUJB-0005Hq-0e for submit@debbugs.gnu.org; Mon, 04 Jan 2021 13:10:21 -0500 Received: from mail-pj1-f42.google.com ([209.85.216.42]:33903) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1kwUJ8-0005HS-Da for 45633@debbugs.gnu.org; Mon, 04 Jan 2021 13:10:19 -0500 Received: by mail-pj1-f42.google.com with SMTP id n3so199420pjm.1 for <45633@debbugs.gnu.org>; Mon, 04 Jan 2021 10:10:18 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=asu-edu.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:references:date:in-reply-to:message-id :user-agent:mime-version; bh=9KIuXas2z7qMiFOLUx1G5nO4bYX6Va2JyHIk5HRTWEk=; b=h9kUg2pUrs3OZzdaJy2Bc7JrBFtCClssdIXV/G6QJl6YFGhSKx0eoKY8v7SmrXH5FU YH/rOjP8wbwg+bgDEfxbZ7z/D7WZIQ37kHgBFAh6lLRrdJ7ayj41/fHM3aSpL6KxOyq+ Qj3JBMdnxeX1wn9FbXbYD8g6VdlqODyhjKEKRwI6ttTuMgdxGoNAkDgR+BtdfSamkgwF Y9uCvD7X+Su5zQKd5oo2NhNqzNyadxWCC9gbL97Ppm5g8evBp0c+aeMAVGbM15tn5zNN FkmXWKrL+XfyosrKwMUfhTtz69eXtEKkN2y3PMOs6bH7qe/XIPoeD8QUS8Yud2NFwQHM gEzQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:references:date:in-reply-to :message-id:user-agent:mime-version; bh=9KIuXas2z7qMiFOLUx1G5nO4bYX6Va2JyHIk5HRTWEk=; b=SebH+JjsKs9GXJ4AatQhUXEL1ruIjvNUw+Byh5jPyyUL1q/YjOK0s6VvfkROrz2M5P noR4L2WVwyOqa3l16r+dMMUqVJkAH5AMiMaoqF/leeQM4HL05Pn+jMvt2hYKQxxFTwqh iBg697qyFJvvN/BUpWlluB2q9dTFX0EoKnZ19lXBw2G5FqZzqY7tHRPuZuBZFGGUPwfH ULwB3pmEBs98ghj7y9G7cmcwwkEkwRziFhKSd0KXZVpL0gt9/v90O9zZ41dI9onVX2oY eMVFa5CD/nLrEsxrA2166bIWnRq5YlL1vBqmYXYe/diCYP0hwr6d81tFLHqLp5bWTk20 OpTw== X-Gm-Message-State: AOAM531nDOYHf46cs1GZWHV/sNqL+JYHNED+zv9t6Z2tEnzahlmIZz7k Gntcnkbs5+o/UoKGymNhOAL106cXDykAgg== X-Google-Smtp-Source: ABdhPJxmWdZtOb9Ol5P61Mr21LukD3YKhD6aGu6LSw2nqV18TcwHkmwwApg2U0gxg/vOuw+A/aXY3g== X-Received: by 2002:a17:90b:3845:: with SMTP id nl5mr107390pjb.108.1609783812190; Mon, 04 Jan 2021 10:10:12 -0800 (PST) Received: from ecenter ([2600:1700:83b0:8bd0::7a8]) by smtp.gmail.com with ESMTPSA id v3sm62097pjn.7.2021.01.04.10.10.11 (version=TLS1_2 cipher=ECDHE-ECDSA-CHACHA20-POLY1305 bits=256/256); Mon, 04 Jan 2021 10:10:11 -0800 (PST) From: John Soo References: <875z4d3m83.fsf@asu.edu> <87turxhf7i.fsf@nckx> Date: Mon, 04 Jan 2021 10:10:10 -0800 In-Reply-To: <87turxhf7i.fsf@nckx> (Tobias Geerinckx-Rice's message of "Sun, 03 Jan 2021 22:40:17 +0100") Message-ID: <8735zg375p.fsf@asu.edu> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.1 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-Spam-Score: 0.0 (/) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: debbugs-submit-bounces@debbugs.gnu.org Sender: "Debbugs-submit" X-Spam-Score: -1.0 (-) Hi Tobias, Tobias Geerinckx-Rice writes: > John, > > This reminds me of . Hm, maybe. How does it remind you of zfs? It seems like zfs needs the libraries from util-linux, right? bcc and bpftrace need the kernel headers. The following should illustrate there is nothing to load dynamically, right? find $(guix build linux-libre-headers) -name '*.\.so*' > This should probably be booted-system. Yes, definitely, thanks. s/current-system/booted-system/ > I know exact kernel headers are needed at toolchain run time, when > building eBPF programmes. Are they really needed at toolchain > build time, too? I am not sure what the headers are used for but they are indeed the .h files (tree $(guix build linux-libre-headers)). I would assume they are used by the gcc-toolchain when compiling the package as #includes. What do you think? - John