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[192.55.54.39]) by smtp.gmail.com with ESMTPSA id b62-v6sm2843781pfj.123.2018.07.03.05.44.07 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 03 Jul 2018 05:44:07 -0700 (PDT) Received: by kshutemo-mobl1.localdomain (Postfix, from userid 1000) id F143530003D; Tue, 3 Jul 2018 15:44:03 +0300 (+03) Date: Tue, 3 Jul 2018 15:44:03 +0300 From: "Kirill A. Shutemov" To: Gabriel C Cc: Benjamin Gilbert , linux-x86_64@vger.kernel.org, LKML , "Kirill A. Shutemov" , Ingo Molnar , Thomas Gleixner , "H. Peter Anvin" , X86 ML , bero@lindev.ch Subject: Re: 4.17.x won't boot due to "x86/boot/compressed/64: Handle 5-level paging boot if kernel is above 4G" Message-ID: <20180703124403.veiak4vnbxtmwhv2@kshutemo-mobl1> References: <20180701213243.GA20180@trogon.sfo.coreos.systems> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: NeoMutt/20180622 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Jul 03, 2018 at 01:24:49PM +0200, Gabriel C wrote: > 2018-07-01 23:32 GMT+02:00 Benjamin Gilbert : > > On Sun, Jul 01, 2018 at 05:15:59PM -0400, Benjamin Gilbert wrote: > >> 4.17 kernels built with the CoreOS Container Linux toolchain and kconfig, > >> up to and including 4.17.3, fail to boot on AMD64 running in (at least) > >> QEMU/KVM. No messages are shown post-GRUB; the VM instantly reboots. > >> Reverting commit 194a9749c73d ("x86/boot/compressed/64: Handle 5-level > >> paging boot if kernel is above 4G") fixes it. I've attached our kernel > >> config for reference, and am happy to test patches, provide sample QCOW > >> images, etc. > > > > Also see https://bugzilla.kernel.org/show_bug.cgi?id=200385 , > > 0a1756bd2897951c03c1cb671bdfd40729ac2177 is acting up > too with the same symptoms I tracked it down to -flto in LDFLAGS. I'll look more into this. -- Kirill A. Shutemov