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=-3.9 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,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 B2A25C43461 for ; Wed, 9 Sep 2020 00:15:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id AC344216C4 for ; Wed, 9 Sep 2020 00:15:27 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=canb.auug.org.au header.i=@canb.auug.org.au header.b="VIQZJDjm" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728899AbgIIAP0 (ORCPT ); Tue, 8 Sep 2020 20:15:26 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47572 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726560AbgIIAP0 (ORCPT ); Tue, 8 Sep 2020 20:15:26 -0400 Received: from ozlabs.org (bilbo.ozlabs.org [IPv6:2401:3900:2:1::2]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 98514C061573; Tue, 8 Sep 2020 17:15:25 -0700 (PDT) Received: from authenticated.ozlabs.org (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-256) server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by mail.ozlabs.org (Postfix) with ESMTPSA id 4BmMwf3hRVz9sTN; Wed, 9 Sep 2020 10:15:14 +1000 (AEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=canb.auug.org.au; s=201702; t=1599610516; bh=G+c9Aw/7aQyit4FCnnuNFGGwhaFlmH6imUDb7V5FlrU=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=VIQZJDjmN5ooJV1EOuT0seYLgl1asNZyHGb7Fj5/eeMCHyxXzKrA///xqvuL54OUz Pu+at0VpSAL34i/pYp+firANdwvhFBKDa+OLUkGe79DoBGFAdik6LlnmzVhErSqCQz TnB52AOKYpAF8FQBlzA2z4JCgPxg6e9qtsH7m98zOuAqVZTOuSLGxdQHWKQKeHPnod TZTcp3hHrs5gpOyd/MIKU6cTriX09PU94nP5XTKRYlFcSbvia3vv0RH5h7K0siWJJq H6m4RSVNzuwAqZeZKAw85BCq5bnJqZHaGiJMqIChtB0glD1mNO+V9h/V44E/5dDsSy Ye8PE6pTT8xgA== Date: Wed, 9 Sep 2020 10:15:08 +1000 From: Stephen Rothwell To: Josh Poimboeuf Cc: Peter Zijlstra , Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , Linux Next Mailing List , Linux Kernel Mailing List , Randy Dunlap Subject: Re: linux-next: build warnings in Linus' tree Message-ID: <20200909101508.2dcbfdc6@canb.auug.org.au> In-Reply-To: <20200908131439.xj6nzi6nny3u5icb@treble> References: <20200908091102.4c2d7b37@canb.auug.org.au> <20200908131439.xj6nzi6nny3u5icb@treble> MIME-Version: 1.0 Content-Type: multipart/signed; boundary="Sig_/v0fIXRqK3vdwoSVeNUT=q5P"; protocol="application/pgp-signature"; micalg=pgp-sha256 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --Sig_/v0fIXRqK3vdwoSVeNUT=q5P Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable Hi Josh, On Tue, 8 Sep 2020 08:14:39 -0500 Josh Poimboeuf wrot= e: > > On Tue, Sep 08, 2020 at 09:11:02AM +1000, Stephen Rothwell wrote: > >=20 > > Building Linus' tree, today's linux-next build (x86_64 allmodconfig) > > produced these warnings: > >=20 > > arch/x86/kernel/cpu/mce/core.o: warning: objtool: mce_panic()+0x2a3: un= reachable instruction > > net/core/skbuff.o: warning: objtool: skb_push.cold()+0x1b: unreachable = instruction > > arch/x86/mm/mmio-mod.o: warning: objtool: pre()+0x21a: unreachable inst= ruction > > arch/x86/kvm/vmx/vmx.o: warning: objtool: vmx_handle_exit_irqoff()+0x14= 2: unreachable instruction > > kernel/exit.o: warning: objtool: __x64_sys_exit_group()+0x26: unreachab= le instruction > > kernel/cred.o: warning: objtool: get_task_cred.cold()+0x19: unreachable= instruction > > drivers/misc/sgi-gru/grukservices.o: warning: objtool: gru_wait_abort_p= roc()+0x97: unreachable instruction > > drivers/scsi/pcmcia/aha152x_core.o: warning: objtool: is_complete()+0x6= c6: unreachable instruction > > drivers/message/fusion/mptbase.o: warning: objtool: mpt_SoftResetHandle= r()+0x4a5: unreachable instruction > > drivers/scsi/aic7xxx/aic79xx_core.o: warning: objtool: ahd_intr()+0x2a9= : unreachable instruction > > drivers/net/ethernet/marvell/octeontx2/nic/otx2_txrx.o: warning: objtoo= l: otx2_sq_append_tso()+0xab6: unreachable instruction > > fs/btrfs/extent_io.o: warning: objtool: __set_extent_bit.cold()+0x12: u= nreachable instruction > > fs/btrfs/backref.o: warning: objtool: btrfs_backref_finish_upper_links(= )+0x818: unreachable instruction > > fs/btrfs/relocation.o: warning: objtool: update_backref_cache.isra.0()+= 0x3bf: unreachable instruction > > drivers/atm/horizon.o: warning: objtool: rx_data_av_handler()+0x452: un= reachable instruction =20 >=20 > I suspect these will all be fixed by this livepatching pull request: >=20 > https://lkml.kernel.org/r/20200907082036.GC8084@alley Yep, all but the vmx_handle_exit_irqoff() one as Linus noted. Thanks. --=20 Cheers, Stephen Rothwell --Sig_/v0fIXRqK3vdwoSVeNUT=q5P Content-Type: application/pgp-signature Content-Description: OpenPGP digital signature -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEENIC96giZ81tWdLgKAVBC80lX0GwFAl9YHowACgkQAVBC80lX 0Gz7XggAmPLYEKpqSvIpVbgZnlEiqEIRbPTUL4Btb5ymsq481Tt8kD++wlcGBUHE YqkCKNGyYInbDn85LAlNlx3WD1LY7Q2k0zq6xJkwZXXrxh1xiqcL+B28YCYHE+lR Qokw4jDtm+ARf1o7lhdAoW0dQMy6Jda6wRXNCOxwUsnSLPeXLN0tDqliT0HzIiOs lLC9T/4cikd++MGqCQFu/ARBPtAtmJ/KfZhpz7hWNPyvRfm+x8Nq4kYUgrwW7o7K Fvzn1hRPCtrCc5z0dD1yDfCu8DnpfOUPy6W/fKg1zBio9esn65vDkt4V4no7cO25 YCUWV9uRzNMrifwUnR0dwmBL2Ew1AQ== =ColM -----END PGP SIGNATURE----- --Sig_/v0fIXRqK3vdwoSVeNUT=q5P--