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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 57735C433EF for ; Wed, 1 Jun 2022 00:38:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1348807AbiFAAio (ORCPT ); Tue, 31 May 2022 20:38:44 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51090 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1348811AbiFAAim (ORCPT ); Tue, 31 May 2022 20:38:42 -0400 Received: from mail-ed1-x536.google.com (mail-ed1-x536.google.com [IPv6:2a00:1450:4864:20::536]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4E3148CB38 for ; Tue, 31 May 2022 17:38:38 -0700 (PDT) Received: by mail-ed1-x536.google.com with SMTP id b8so75662edf.11 for ; Tue, 31 May 2022 17:38:38 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:content-transfer-encoding:in-reply-to; bh=yVbJeLTdQjW4iyHS7w2sW/eH8EUfczFgigYOAZThv+k=; b=S+jsy1dztvI0Krgsi+xAQEuiWFRH68Jc4cPZJ8O02WtvgJHwxdE1eHqii33Battqln rGhZ//moewLN1auGlUrK7yP7lsL1iLZjKprixUi1sF/mcD/VzjO6VzjISWR+hjARZuUf pw6D08Wg3zyXZVdlQ+/jyhdQ9OH+MsHzykK7GXfGotS/0k93gHEil1SxU671X4FEXolE T77b3zCPgtE9cWUjAHwe5OdtNlpjYOXgZDTsR/EIDPhtBF6IShFDWuJxS+FKHOtaxP+Q EIVIbH2HmjmoLpEw7uUR9nVbvCU4dhGAPeEh6u6negdps/dsQ9xufEwisN3eb/QGjgYC TH0A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:content-transfer-encoding :in-reply-to; bh=yVbJeLTdQjW4iyHS7w2sW/eH8EUfczFgigYOAZThv+k=; b=I7ZUBwvS+7PTk38IHjek/tVN/NhZzyZ6vGpNopWSCRjCb6gn382eCU9xCTCwzsnrOU ArVUs1/F3yNvlIfkHedStJ9qzrjDTKTz5DQ533CalMId/D/dvWcpKy9VjcP2Q3CZQM1d 7txsoCmTbDMJJP+DEg7dGoeSq7vLvvbDftZsxIepuVnYH8AMDaTK8ojUAJd3ugCFc174 oLwo8TRjHh2QTCUNfbcrB1aziDSY0PNFgpY0fmFT1DWTj5f4Anvu5lf6BRjBLd1FP+DN i6LbmcCpdfFrtr1ACxZiH3pzfhlWK9JowEFg1baUzBjH3XsfnyTjrNH0w4YOPBToBxsu QfsQ== X-Gm-Message-State: AOAM531l2fympSQAdVPV1lBJtV0oqD1wOwI32K5CSsM4GHcy0iJh8Ia7 d4yfNc7ce6LqMvN9CGz7bYjf4bYfmsE= X-Google-Smtp-Source: ABdhPJwgVGDiU1n12nwvSJ1Ta7zNsbGzOnGbXBth/fn6L0IG7K4dAov+VY/URUw4YndKyOL7luMvsA== X-Received: by 2002:aa7:d456:0:b0:42d:d7d9:34c1 with SMTP id q22-20020aa7d456000000b0042dd7d934c1mr10846247edr.21.1654043916617; Tue, 31 May 2022 17:38:36 -0700 (PDT) Received: from mail (239.125-180-91.adsl-dyn.isp.belgacom.be. [91.180.125.239]) by smtp.gmail.com with ESMTPSA id si8-20020a170906cec800b00706ed5afdc0sm85967ejb.120.2022.05.31.17.38.35 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 31 May 2022 17:38:36 -0700 (PDT) Date: Wed, 1 Jun 2022 02:38:34 +0200 From: Luc Van Oostenryck To: Toke =?utf-8?Q?H=C3=B8iland-J=C3=B8rgensen?= Cc: kernel test robot , kbuild-all@lists.01.org, linux-kernel@vger.kernel.org, Daniel Borkmann , "Paul E . McKenney" Subject: Re: kernel/bpf/devmap.c:1030:40: sparse: sparse: cast removes address space '__rcu' of expression Message-ID: <20220601003834.ilvx2pik672yxuxt@mail> References: <202205222029.xpW3PM1y-lkp@intel.com> <87y1yspmmh.fsf@toke.dk> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <87y1yspmmh.fsf@toke.dk> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, May 23, 2022 at 12:30:14PM +0200, Toke Høiland-Jørgensen wrote: > kernel test robot writes: > > > tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master > > head: eaea45fc0e7b6ae439526b4a41d91230c8517336 > > commit: 782347b6bcad07ddb574422e01e22c92e05928c8 xdp: Add proper __rcu annotations to redirect map entries > > date: 11 months ago > > config: ia64-randconfig-s031-20220522 (https://download.01.org/0day-ci/archive/20220522/202205222029.xpW3PM1y-lkp@intel.com/config) > > compiler: ia64-linux-gcc (GCC) 11.3.0 > > Hmm, so this is ia64-only? Some kind of macro breakage? Paul, any ideas? Hi, It's surely IA64's cmpxchg() which contains lines like: _r_ = ia64_cmpxchg8_##sem((__u64 *) ptr, new, _o_); -- Luc