From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-lf1-x131.google.com (mail-lf1-x131.google.com [IPv6:2a00:1450:4864:20::131]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by lists.bufferbloat.net (Postfix) with ESMTPS id 6819F3CB35 for ; Wed, 22 Aug 2018 06:00:20 -0400 (EDT) Received: by mail-lf1-x131.google.com with SMTP id z11-v6so960533lff.9 for ; Wed, 22 Aug 2018 03:00:20 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:subject:from:in-reply-to:date:cc :content-transfer-encoding:message-id:references:to; bh=eAc+ZVyVowD//i3F4J9b2RvLiUqBmVNpEyxW/V9Y37s=; b=rMfal++TTYFyv0QoqWKmlkF7pQ1iFbgb2dJGoCKvttqprqQiISrOpMUdwY2Kt8KCpG wAY2/hqQ3mwwYIGhSxEdCIwHQmQ9tZjhXO9FWz7PFry5xix11+VpAs6w4bFfko8Wh0sU y6w4S8JyBmpkGxmAb/dolzdYE3UyBDifz4H5hIelxigzIihqG9z0+3ue7ZLECn6zWuro dgnlaoL16SZ9oyzbI+Y8ab21JR7F5cr5gciIvgIo13Qi50wVlONslLB9iSnCYuoub8nG SA/zf8/tY8HxbCsXH5lWNm1JUdw5wV2eN9WVFYtKZVxbmOtCwbZqB5MudTkttB2XXJ4J 2ZRw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:subject:from:in-reply-to:date:cc :content-transfer-encoding:message-id:references:to; bh=eAc+ZVyVowD//i3F4J9b2RvLiUqBmVNpEyxW/V9Y37s=; b=Mel1jJ7RGNPCGKzQqy2kFAftkvESZ+avki4GPQ0JUWiGjiscSyhy149hNTWVJvNUVm Frd6OU9V6PfVxB07rHRVgDCR4QWZCqPJha5R8WyT5nnFk/tEo29iugo5ngI/pY8ztq41 z4hlTZtZS856gZyFt9bZhUdbOIlN7+8mMbR22JXCTB8YNoIUcGvtIUK9MqnyRpOHahat 0J0HiLHqABhfR+RL8lcKDF4Di2neHArWNUPily0bVvIK2qoh6BG1qW3Y1ere5U3vUX6n H1B8/xzKU4eNNU3t69oyaF647A8hUBxO+PkzhbKtV2XMAQm+Z+ZGJRMTZ2LrWPvBhAUs tRLA== X-Gm-Message-State: AOUpUlGnNoqUUcbJa+wBykXnhs9Y2NwvyOPHsbeq8863yJVy2N8cPynC mpGqXxq/S3AAJqPoa2ioMDM= X-Google-Smtp-Source: AA+uWPx3eGQWccFMeCB1k2BVBJAZO3tQRXDzhLGfwpNoM6i+2b4nyDKNMnjNrwW36+F2tRn2ze0RDw== X-Received: by 2002:a19:1761:: with SMTP id n94-v6mr8062799lfi.64.1534932019368; Wed, 22 Aug 2018 03:00:19 -0700 (PDT) Received: from jonathartonsmbp.lan (83-245-236-56-nat-p.elisa-mobile.fi. [83.245.236.56]) by smtp.gmail.com with ESMTPSA id f22-v6sm212907ljk.11.2018.08.22.03.00.18 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 22 Aug 2018 03:00:18 -0700 (PDT) Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (Mac OS X Mail 11.5 \(3445.9.1\)) From: Jonathan Morton In-Reply-To: <70F2DBF2-5B11-43AC-82FD-899A2B0931EC@heistp.net> Date: Wed, 22 Aug 2018 13:00:17 +0300 Cc: =?utf-8?Q?Toke_H=C3=B8iland-J=C3=B8rgensen?= , Cake List Content-Transfer-Encoding: quoted-printable Message-Id: References: <87h8jze5hk.fsf@toke.dk> <85C60B2F-78D0-4AEE-871C-BB637785BF62@gmail.com> <4D28C453-5378-4A5B-9E05-874F36C4DB30@gmail.com> <878t5aedj5.fsf@toke.dk> <87d0uc9d2f.fsf@toke.dk> <03B32CF6-2926-42A7-A407-CBD16BA38F0D@heistp.net> <87tvnm91yy.fsf@toke.dk> <70F2DBF2-5B11-43AC-82FD-899A2B0931EC@heistp.net> To: Pete Heist X-Mailer: Apple Mail (2.3445.9.1) Subject: Re: [Cake] issue with Cake and bpf filter X-BeenThere: cake@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: Cake - FQ_codel the next generation List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 22 Aug 2018 10:00:20 -0000 > On 22 Aug, 2018, at 12:51 pm, Pete Heist wrote: >=20 > "math between pkt pointer and 4294901760 is not allowed" As a possible clue here, 4294901760 =3D=3D (2^32) - (2^16). I suspect both errors are being caused by the call to memcpy(). This = potentially inlines a substantial amount of code which may not be = eBPF-clean. - Jonathan Morton