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 X-Spam-Level: X-Spam-Status: No, score=-0.6 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E2DD2C33CAE for ; Tue, 14 Jan 2020 05:24:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B6D1A207E0 for ; Tue, 14 Jan 2020 05:24:04 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="LOtEzdzO" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727100AbgANFYE (ORCPT ); Tue, 14 Jan 2020 00:24:04 -0500 Received: from mail-lj1-f194.google.com ([209.85.208.194]:40233 "EHLO mail-lj1-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725842AbgANFYD (ORCPT ); Tue, 14 Jan 2020 00:24:03 -0500 Received: by mail-lj1-f194.google.com with SMTP id u1so12810929ljk.7; Mon, 13 Jan 2020 21:24:02 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=xOe8cEwY/+ggWSrDf4teIOpCv6NdYHvbvkF1XKTEocs=; b=LOtEzdzO4P0gGkSt2/IoHR9VPfhIc06dybg249hC4fdFHKqGeaO8YxYjcto8GZcco6 HX2osGkURrzyuWIDMmPjKH6D5ziJteWrS8nP6g8cIpsmxO3g6xKeyta0lNcLNXqImGgD C61+M2tHogtE/Tl8QJKImmlO9aOGwRqlrM74DKpVkzILRUlW2Xd3NWS6eUv1BHk1+oxv 6Nz/uoqwbBG4FLBT0+T4Qdp3BXsK2hZReGH8l838Wpi3S4hKpZI+O6PN3yd+BgnhdqGt 70U3ZQqzxQXRssZfvaI+neH8/KYxh+qMbdUQS85U95UhbJwfqdQbTlh4qpLZ9gE8FNO/ Mnog== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=xOe8cEwY/+ggWSrDf4teIOpCv6NdYHvbvkF1XKTEocs=; b=Q8eDO77pETAyZ5dNyBs0evbD+ZGsOWpADSCg4uQMl3tZNOfdlDB2ChnXbEMNwSLUW5 xLn6M8JqgrPNHD/4ScpbJKioGZzvJgSFXPfUOF2WrmG4/jSrG6CHwP1NG0I5v7LUG5XX VKwznSaY2cePVU8ykwSzZ1wQF3+m3Z2OV+RFBk6kkfb2UMs1Oz42PkMRH4ISK+GVxfF2 9+ZdevaC+KKBUA4B/BC71fgNAfTr+WkKyVplubxUxMzkPH4Keku/rnJF8I59Dsi0ZYD6 SDWNZLNyzu/Cil2rVL2kePYJ50+RXh+hfnCDswQYBvf02BK0HDTeEB2tSGuNXXAimFfS Uxhw== X-Gm-Message-State: APjAAAXl43d0NEDHzMjnkgviIAiptTfUABSRdQ1popCKxkG5D1htywna /hq/xL0ztfyVqQkhocJJJOe2l+MgucIXapAU8ZI= X-Google-Smtp-Source: APXvYqwLRjvJGcaSQN7MdhbIG50V/jBBlGzk43plCv5NgKLK461rA5mo+qyywlltVwtQwDPfSOV1dXQ6+y5OCmX7tEU= X-Received: by 2002:a2e:884d:: with SMTP id z13mr13271564ljj.116.1578979441504; Mon, 13 Jan 2020 21:24:01 -0800 (PST) MIME-Version: 1.0 References: <20191018105657.4584ec67@canb.auug.org.au> <20191028110257.6d6dba6e@canb.auug.org.au> In-Reply-To: From: Alexei Starovoitov Date: Mon, 13 Jan 2020 21:23:50 -0800 Message-ID: Subject: Re: linux-next: build warning after merge of the bpf-next tree To: Zong Li Cc: Alexandre Ghiti , Palmer Dabbelt , Stephen Rothwell , Daniel Borkmann , Alexei Starovoitov , Network Development , Linux-Next Mailing List , "linux-kernel@vger.kernel.org List" , ppc-dev , linux-arm-kernel Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sun, Jan 12, 2020 at 8:33 PM Zong Li wrote: > > I'm not quite familiar with btf, so I have no idea why there are two > weak symbols be added in 8580ac9404f6 ("bpf: Process in-kernel BTF") I can explain what these weak symbols are for, but that won't change the fact that compiler or linker are buggy. The weak symbols should work in all cases and compiler should pick correct relocation. In this case it sounds that compiler picked relative relocation and failed to reach zero from that address. 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Mon, 13 Jan 2020 21:24:01 -0800 (PST) MIME-Version: 1.0 References: <20191018105657.4584ec67@canb.auug.org.au> <20191028110257.6d6dba6e@canb.auug.org.au> In-Reply-To: From: Alexei Starovoitov Date: Mon, 13 Jan 2020 21:23:50 -0800 Message-ID: Subject: Re: linux-next: build warning after merge of the bpf-next tree To: Zong Li Content-Type: text/plain; charset="UTF-8" X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Stephen Rothwell , Alexandre Ghiti , Daniel Borkmann , Network Development , Palmer Dabbelt , Alexei Starovoitov , "linux-kernel@vger.kernel.org List" , Linux-Next Mailing List , ppc-dev , linux-arm-kernel Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" On Sun, Jan 12, 2020 at 8:33 PM Zong Li wrote: > > I'm not quite familiar with btf, so I have no idea why there are two > weak symbols be added in 8580ac9404f6 ("bpf: Process in-kernel BTF") I can explain what these weak symbols are for, but that won't change the fact that compiler or linker are buggy. The weak symbols should work in all cases and compiler should pick correct relocation. In this case it sounds that compiler picked relative relocation and failed to reach zero from that address. 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 X-Spam-Level: X-Spam-Status: No, score=-0.5 required=3.0 tests=DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED,DKIM_VALID,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1294EC33CAD for ; Tue, 14 Jan 2020 05:24:08 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id BF3DC207E0 for ; Tue, 14 Jan 2020 05:24:07 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="h1oSoqUp"; dkim=fail reason="signature verification failed" (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="LOtEzdzO" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org BF3DC207E0 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:To:Subject:Message-ID:Date:From: In-Reply-To:References:MIME-Version:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=Abbv6wGFE/BRJiFU0NlrX5t22q+kDxBuLDtruj+Ssaw=; b=h1oSoqUpuxSBgt riqFxojbvy2cJqgWHPYfh5totYxbYyE48HpuMEgFlZ3IqPz0PVURtBKMQWgmpbvjg1SDWD2ToAknZ VBC7Sn+RtVRnMBmyALKfp0CHImI91+DUoCwZkFoAXKqYVwmrJ5zXMr0LpkK6IVCo00ZFu++IgpB7E OWqqKhuE7bGSojcgPi48VixWIHOUstfFEh6kIbim5MNmRyQCNKh8rvycE3dVKq0Dnn2Ct7SMfAoZN toyXNixkyot0WrTfa5UdpsHQXug7cG5t5150hre8psQXMgTjeLvuXeNqOP/jwqprOme6G2cxQyT7d gXpxTgWjt3bJyTqkuzLg==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1irEgR-00005o-6s; Tue, 14 Jan 2020 05:24:07 +0000 Received: from mail-lj1-x244.google.com ([2a00:1450:4864:20::244]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1irEgO-0008WB-Vi for linux-arm-kernel@lists.infradead.org; Tue, 14 Jan 2020 05:24:06 +0000 Received: by mail-lj1-x244.google.com with SMTP id r19so12828340ljg.3 for ; Mon, 13 Jan 2020 21:24:02 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=xOe8cEwY/+ggWSrDf4teIOpCv6NdYHvbvkF1XKTEocs=; b=LOtEzdzO4P0gGkSt2/IoHR9VPfhIc06dybg249hC4fdFHKqGeaO8YxYjcto8GZcco6 HX2osGkURrzyuWIDMmPjKH6D5ziJteWrS8nP6g8cIpsmxO3g6xKeyta0lNcLNXqImGgD C61+M2tHogtE/Tl8QJKImmlO9aOGwRqlrM74DKpVkzILRUlW2Xd3NWS6eUv1BHk1+oxv 6Nz/uoqwbBG4FLBT0+T4Qdp3BXsK2hZReGH8l838Wpi3S4hKpZI+O6PN3yd+BgnhdqGt 70U3ZQqzxQXRssZfvaI+neH8/KYxh+qMbdUQS85U95UhbJwfqdQbTlh4qpLZ9gE8FNO/ Mnog== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=xOe8cEwY/+ggWSrDf4teIOpCv6NdYHvbvkF1XKTEocs=; b=uK2/b5UiQmR4SbWPe5ehtDCXlIRdrbd/Cexd8fVOyT0O4EMtJo+t+Pj5AXW0xUfSK8 jGcK5zkDNzT4YfBcFF/k530Kpl3BNtwlCAmYdrN+3/uwFuUepWxDROEMGsH9DWsdTLk/ aB3G50rmHasNzmD7GXkOHFerzRIzmkj6hhwG9tQfcqX+htM7n254l343qp1RruaI6WET rf70XV5tVBCtam9wdRMDB3fLG+WguJPVFk3b/+doJXhbwPZibRbxSyvvP5AmqbcLNI8P LPag9+rqMg61WlA9fQE9eGWt4QXROeQEQbV/fZIfMc5aUKXhYQ70eydLflY1jHcaQ1r/ KS8A== X-Gm-Message-State: APjAAAW75s/T2HuYkWWpa/lSrbTH15mPo0Ac//w1w9PqHEAYWP0eDz05 euXzgu9jqhn8QEreN8jO9O+bkLbq9WHrk9TJgHQ= X-Google-Smtp-Source: APXvYqwLRjvJGcaSQN7MdhbIG50V/jBBlGzk43plCv5NgKLK461rA5mo+qyywlltVwtQwDPfSOV1dXQ6+y5OCmX7tEU= X-Received: by 2002:a2e:884d:: with SMTP id z13mr13271564ljj.116.1578979441504; Mon, 13 Jan 2020 21:24:01 -0800 (PST) MIME-Version: 1.0 References: <20191018105657.4584ec67@canb.auug.org.au> <20191028110257.6d6dba6e@canb.auug.org.au> In-Reply-To: From: Alexei Starovoitov Date: Mon, 13 Jan 2020 21:23:50 -0800 Message-ID: Subject: Re: linux-next: build warning after merge of the bpf-next tree To: Zong Li X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200113_212405_043946_C1407A5C X-CRM114-Status: UNSURE ( 7.56 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Stephen Rothwell , Alexandre Ghiti , Daniel Borkmann , Network Development , Palmer Dabbelt , Alexei Starovoitov , "linux-kernel@vger.kernel.org List" , Linux-Next Mailing List , ppc-dev , linux-arm-kernel Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Sun, Jan 12, 2020 at 8:33 PM Zong Li wrote: > > I'm not quite familiar with btf, so I have no idea why there are two > weak symbols be added in 8580ac9404f6 ("bpf: Process in-kernel BTF") I can explain what these weak symbols are for, but that won't change the fact that compiler or linker are buggy. The weak symbols should work in all cases and compiler should pick correct relocation. In this case it sounds that compiler picked relative relocation and failed to reach zero from that address. _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel