From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pf1-f175.google.com (mail-pf1-f175.google.com [209.85.210.175]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 86F88205517 for ; Thu, 12 Dec 2024 18:04:27 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.175 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734026669; cv=none; b=aB/saPa3TyifzZpo7Uz86eYK7GRYknreIXhLnJGJYHnpabMz1g/4koDaw+R6++rJ2c64ZyPpNzp26jczqbQr2c4WMsxj7tilzjC1RvcyQSO5yvlZUUUB0Rm3zE/0ZWepbeX3mwqrO6mILK/f0ee6ZhkyCgxldpxi0eysW7Ocjpo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734026669; c=relaxed/simple; bh=tf2JCNaJz3VG8NhcC+BAvC0d9OhCHHUHZtcE5Yt1ZoU=; h=Message-ID:Subject:From:To:Cc:Date:In-Reply-To:References: Content-Type:MIME-Version; b=IDWMSvKEkiP2RApDvGXs8BYdl4qhjsm3eLOg+B6BxI+70xm+Vbuy4lbzgNgP3ye8pMO+i/KkfoP70GoN0BRzVCd4PZRT3JByf8SVmarKOw09g/Epu6GLQZRftRhUMXpncykY5aW8tGChnD8qLEesyib8RH59kZDtlywDJPsVGaA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=KsZv+2tG; arc=none smtp.client-ip=209.85.210.175 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="KsZv+2tG" Received: by mail-pf1-f175.google.com with SMTP id d2e1a72fcca58-728f28744c5so812708b3a.1 for ; Thu, 12 Dec 2024 10:04:27 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1734026667; x=1734631467; darn=vger.kernel.org; h=mime-version:user-agent:content-transfer-encoding:references :in-reply-to:date:cc:to:from:subject:message-id:from:to:cc:subject :date:message-id:reply-to; bh=tf2JCNaJz3VG8NhcC+BAvC0d9OhCHHUHZtcE5Yt1ZoU=; b=KsZv+2tG8QbGo94mJwLOPw5NWjiJYd+p+fa2W0/p3x3t65oxXEx835OTvAjrc/lk7W 42Iu56O7OlH/O/EI0rWTqMZ50uxgZBtVCk6CNVgLdErDK+xMRwnYMVddvQSlFuHMisSl G9tSpxv4WibTMgpTQNF5g06gJ6Nuz8uOAL3+z3uWhXKUhWCI9oyf2arYMtGbQqOEI5ks AZCdtq37U7ohrSFtuWKlimSfMI4ZAYipUxHox2shj3LV6ehvFZBD0UFlOGUbkeXjMC6g 8FLOHHfBFMoFfUQ823dQt3au0GeQPfaZs4w6SKCVG++IAGoW7WdcOqMS03NQSz1WnNId v+ng== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1734026667; x=1734631467; h=mime-version:user-agent:content-transfer-encoding:references :in-reply-to:date:cc:to:from:subject:message-id:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=tf2JCNaJz3VG8NhcC+BAvC0d9OhCHHUHZtcE5Yt1ZoU=; b=wowbMeIp8TwNBwzZQwStdl8kqAfKDccWb0POuSbLdsF/8vMgdHRpBagIrxYjj0MGjy LAW3gfKD+n2D+XXDJehJDmjgxT9NuBBf4tqdycZrAG4zgaB4D9lrEU1LaVr1ezETXz+B wg9vEqfOmPjeQJQOXkGI7ZtrJc4L6aei08Qg0z9Bt6E3SGfsrgsFqfWs+65crB2Z1lVs Fh7SejjtpzswWbdtOZYRZN3LFODi3jVSZmf76khzuGKamSxi8VbDLVzARS2l6rn1ABgW Nc/0QG4K7YctAugoEFJl4WEHLHV9WUnDa89skTaH77WaEcKUz87hd1IoAt3GwL8z6yjR n37Q== X-Gm-Message-State: AOJu0Yz0n4wIkX8SfzH70rLKkCr4KabcivR9tMflQWy/Z/+GttH25ZuA a/tp8XjLLjKFhdgYSoGqBCYXF6n58CwnAq6HzRQk1wgRlTKa5dyM X-Gm-Gg: ASbGncvb48LsNYY2bOHykvERcu47i0kspwt67GnVaVTzuHT+yLC1//JU3MBM3tvw1KE LsAiElGmBMEWyg/6PQkhnp4UNca5urNMPDga3TA/cwsXxWa53uLYLBody+JhzKMmstn9Oo75mGV BFYsHMJxmxbjlh2NQNKNatRQ5iWFFP74nJYd9RA/pnjUZmLuZwusEtqVsFb4n7nQbLZ7Y81wGnH a7ubuLuN9ZLUSHs7JlERK2xKXMMQj1LaoethgLcnVr2lGJdBWVZFw== X-Google-Smtp-Source: AGHT+IFim6szj9xTmqnfiaVlHON/ACzdTHkgvbDfl5JVulpLlzwIO0+aFB/LP+LrX2p+q53OBfGm5g== X-Received: by 2002:a05:6a00:c84:b0:726:41e:b310 with SMTP id d2e1a72fcca58-729069c4298mr1345498b3a.12.1734026666671; Thu, 12 Dec 2024 10:04:26 -0800 (PST) Received: from [192.168.0.235] ([38.34.87.7]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-7fd2f40dc81sm8715841a12.64.2024.12.12.10.04.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 12 Dec 2024 10:04:26 -0800 (PST) Message-ID: Subject: Re: [PATCH bpf 1/2] bpf: fix NPE when computing changes_pkt_data of program w/o subprograms From: Eduard Zingerman To: Alexei Starovoitov Cc: bpf , Alexei Starovoitov , Andrii Nakryiko , Daniel Borkmann , Martin KaFai Lau , Kernel Team , Yonghong Song , Nick Zavaritsky , kernel test robot , Dan Carpenter Date: Thu, 12 Dec 2024 10:04:21 -0800 In-Reply-To: References: <20241212070711.427443-1-eddyz87@gmail.com> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.54.1 (3.54.1-1.fc41) Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 On Thu, 2024-12-12 at 09:30 -0800, Alexei Starovoitov wrote: > What is 'NPE' ? Null Pointer Exception, java lingo, grepping through the kernel commit logs does not seem it is used much. Can resubmit with changed subject.