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 lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 471ACC433FE for ; Wed, 8 Dec 2021 14:50:18 +0000 (UTC) Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4J8KpK0m34z3bN5 for ; Thu, 9 Dec 2021 01:50:17 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20201202 header.b=c9K+Maxf; dkim-atps=neutral Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=bugzilla.kernel.org (client-ip=2604:1380:4601:e00::1; helo=ams.source.kernel.org; envelope-from=bugzilla-daemon@bugzilla.kernel.org; receiver=) Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20201202 header.b=c9K+Maxf; dkim-atps=neutral Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4J8KnW1q1Kz2xYK for ; Thu, 9 Dec 2021 01:49:35 +1100 (AEDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 43BC8B81CF1 for ; Wed, 8 Dec 2021 14:49:31 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPS id F24D4C00446 for ; Wed, 8 Dec 2021 14:49:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1638974970; bh=MGSt9y0Lrqy51dc0wAjdvRkKkme1VLunla7B/IRyWNk=; h=From:To:Subject:Date:In-Reply-To:References:From; b=c9K+MaxfgISugzbTc7jlADz6vgMHfcUcK+ARwe78TXls9g3LTdn6dBZWN1ih+qX9A MZFTgnDPUzls00B7C28+F+D3jgSbobjhe7z2EXmA2530r7ux+0mQgYdezgWMHwstgN iQui6oGKbvOvA8Ezazgkt64rCeRn+rm0LB+5jVMGYR7zz0usaFGkqFiBrFT7NUHht5 5sG0ZKvnGhjfldjZXI4XIIrUpbdQt8GwjlFMQIajEuYXTDuPBNWG7Q4B7//T9gch23 RYQnyUehBaTDnTl+40/Pg7z2WbCLYvyLU//vA9iLCUtBDU3J4hFyFC2QIvGC6NMvDW CkP3iLDJbRnJg== Received: by pdx-korg-bugzilla-2.web.codeaurora.org (Postfix, from userid 48) id C591D60F22; Wed, 8 Dec 2021 14:49:29 +0000 (UTC) From: bugzilla-daemon@bugzilla.kernel.org To: linuxppc-dev@lists.ozlabs.org Subject: [Bug 215217] Kernel fails to boot at an early stage when built with GCC_PLUGIN_LATENT_ENTROPY=y (PowerMac G4 3,6) Date: Wed, 08 Dec 2021 14:49:29 +0000 X-Bugzilla-Reason: None X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: AssignedTo platform_ppc-32@kernel-bugs.osdl.org X-Bugzilla-Product: Platform Specific/Hardware X-Bugzilla-Component: PPC-32 X-Bugzilla-Version: 2.5 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: erhard_f@mailbox.org X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P1 X-Bugzilla-Assigned-To: platform_ppc-32@kernel-bugs.osdl.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: attachments.created Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugzilla.kernel.org/ Auto-Submitted: auto-generated MIME-Version: 1.0 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: , Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" https://bugzilla.kernel.org/show_bug.cgi?id=3D215217 --- Comment #4 from Erhard F. (erhard_f@mailbox.org) --- Created attachment 299935 --> https://bugzilla.kernel.org/attachment.cgi?id=3D299935&action=3Dedit kernel .config (4.18.20, PowerMac G4 DP) Hmm, strange... I tried to bisect but found out that this issue goes back to kernel v4.18.2= 0 at least. This one is the earliest I am able to build with GCC_PLUGIN_LATENT_ENTROPY=3Dy, kernels before error out with: make: ngcc: No such file or directory Cannot use CONFIG_GCC_PLUGINS: plugin support on gcc <=3D 5.1 is buggy on powerpc, please upgrade to gcc 5.2 or newer I used gcc 9.4.0 and reduced the kernel .config a lot but it's still the sa= me. v4.18.20 with GCC_PLUGIN_LATENT_ENTROPY=3Dy freezes at this early boot stag= e, without GCC_PLUGIN_LATENT_ENTROPY booting continues. Also GCC_PLUGIN_LATENT_ENTROPY=3Dy makes no problem on my G5 either. So it'= s only the G4 which is affected. Wildly guessing this may be a 32bit PowerPC gcc specific thing? --=20 You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug.=