Received: by 2002:a05:7412:cfc7:b0:fc:a2b0:25d7 with SMTP id by7csp1538695rdb; Mon, 19 Feb 2024 21:44:11 -0800 (PST) X-Forwarded-Encrypted: i=2; AJvYcCWB7Wl/CCd9u2ZqQrLg98UYbp6SuQvhlxvfpZzyQ9YudlZ4GfBxK9W/3HPmy5FcBQ5IunwsxssGojZI6vyamdY9zJmJdkg1u03YzMaIIQ== X-Google-Smtp-Source: AGHT+IGPfTYtfQd5Cm5/3ICs8bXzeEtGqby5d5IgyREfmsRBYErtNCP6+rlQ5lLriPhMbmjqcEae X-Received: by 2002:ac8:5916:0:b0:42d:c742:3661 with SMTP id 22-20020ac85916000000b0042dc7423661mr17365874qty.25.1708407851349; Mon, 19 Feb 2024 21:44:11 -0800 (PST) Return-Path: Received: from ny.mirrors.kernel.org (ny.mirrors.kernel.org. [2604:1380:45d1:ec00::1]) by mx.google.com with ESMTPS id g5-20020ac84805000000b0042dd79d676fsi7514149qtq.57.2024.02.19.21.44.11 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 19 Feb 2024 21:44:11 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel+bounces-72356-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:45d1:ec00::1 as permitted sender) client-ip=2604:1380:45d1:ec00::1; Authentication-Results: mx.google.com; dkim=neutral (body hash did not verify) header.i=@ellerman.id.au header.s=201909 header.b=UIdQfx83; arc=fail (body hash mismatch); spf=pass (google.com: domain of linux-kernel+bounces-72356-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:45d1:ec00::1 as permitted sender) smtp.mailfrom="linux-kernel+bounces-72356-linux.lists.archive=gmail.com@vger.kernel.org" Received: from smtp.subspace.kernel.org (wormhole.subspace.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ny.mirrors.kernel.org (Postfix) with ESMTPS id 16E7B1C214F4 for ; Tue, 20 Feb 2024 05:44:11 +0000 (UTC) Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 2E4FD482D1; Tue, 20 Feb 2024 05:44:05 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=ellerman.id.au header.i=@ellerman.id.au header.b="UIdQfx83" Received: from gandalf.ozlabs.org (gandalf.ozlabs.org [150.107.74.76]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A047945942 for ; Tue, 20 Feb 2024 05:44:01 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=150.107.74.76 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708407844; cv=none; b=lhe4jpcPxqLhlc+gzoJuIG4IbeyfoGNz0Bw5RkEf1V6oS2hLdsvAMeqnbIM/6BDoP3UPG0B0OnaJ3q1ftY5scyj4+j1nO+k8+D90fkdNxWox+XskT48TkBdnbUSPSNdrcjAo16mtTw9JNSdSlC2Asx3wzKPz9JnqQh06RqN1ZMw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708407844; c=relaxed/simple; bh=/BhhWVIVUP0rphj3gdtnNKQJSGZsyxwwpk7tQ5WQDTM=; h=From:To:Cc:Subject:In-Reply-To:References:Date:Message-ID: MIME-Version:Content-Type; b=irpiI5KM1tEigeUmzQA23NISVWJjnRb0BN1xQg3CW76QeeIs03DGLrVdU58mlbU1xFMrYiUy3CzGr9y4ANw4oEL2T2vxpUSuUdoCzepnFbcZDdGgCtCOL2d8E/F0SdTOX8k+f6a6zt30UVNrwgp6oGbfKQ5SGslACkATPa2fJIg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=ellerman.id.au; spf=pass smtp.mailfrom=ellerman.id.au; dkim=pass (2048-bit key) header.d=ellerman.id.au header.i=@ellerman.id.au header.b=UIdQfx83; arc=none smtp.client-ip=150.107.74.76 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=ellerman.id.au Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=ellerman.id.au DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ellerman.id.au; s=201909; t=1708407839; bh=rfmp0MQ0Ux6RuAaBFyTJq/JUhVdDupJU+ukLbInK8Cg=; h=From:To:Cc:Subject:In-Reply-To:References:Date:From; b=UIdQfx83ta4KwNnjdsUHHnolD9mS7hxnJ3jK8vioxN7IGtMKNm4GQ0CBzFmg54fm9 aoAfzUvq+Kyj9hkDAnzsZoXAlXy+5uL163T6JOBMh5tt92286PRVgKG20wVnxjpr0J 8TCUqpissJgjktgxVkwGnPGuCfH7FebtRelbqb4V5IrWXjZYv9my2piVMXn3+72O87 cVmzpx87TjuwAyorVlZB6q9XpiU/GQQVxmMj38n313L00uL8i32i9x0RO00rK9ezNQ fZ30//lAYPYdfvdD3tMDvYgfPGZlIXAMB95Hrww5mkLaVQ1O6YRDPmMRQf64AWXjoK rb5tPARdVQzFQ== 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 X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by mail.ozlabs.org (Postfix) with ESMTPSA id 4Tf7cv0lWkz4wby; Tue, 20 Feb 2024 16:43:59 +1100 (AEDT) From: Michael Ellerman To: Masahiro Yamada , Nicholas Piggin , Christophe Leroy , "Aneesh Kumar K . V" , "Naveen N . Rao" , linuxppc-dev@lists.ozlabs.org, Daniel Axtens Cc: linux-kernel@vger.kernel.org Subject: Re: [PATCH] powerpc: remove unused *_syscall_64.o variables in Makefile In-Reply-To: References: <20240216135517.2002749-1-masahiroy@kernel.org> Date: Tue, 20 Feb 2024 16:43:56 +1100 Message-ID: <874je31yhv.fsf@mail.lhotse> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Masahiro Yamada writes: > +To: Daniel Axtens Unfortunately dja doesn't work on the kernel anymore. > Maybe, we should check if the issue fixed by > 2f26ed1764b42a8c40d9c48441c73a70d805decf > came back. That crash is specific to Power8, which probably no one is running syzkaller on anymore. If I enable KCOV and boot with 1T segments disabled (to make it easier to trigger the bug) it crashes similarly to the report in that commit. > On Fri, Feb 16, 2024 at 10:55=E2=80=AFPM Masahiro Yamada wrote: .. >> To restore the original behavior, we could replace them with: >> >> GCOV_PROFILE_interrupt.o :=3D n >> KCOV_INSTRUMENT_interrupt.o :=3D n >> UBSAN_SANITIZE_interrupt.o :=3D n But just putting those back isn't actually enough to fix it, the code has changed and there are other places that need KCOV disabled on P8. So I'm not sure how to handle this one. I guess I might just take it and then make a todo to fix the KCOV problems later. cheers