Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755360Ab0AETCW (ORCPT ); Tue, 5 Jan 2010 14:02:22 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755351Ab0AETCR (ORCPT ); Tue, 5 Jan 2010 14:02:17 -0500 Received: from mail-pw0-f42.google.com ([209.85.160.42]:57653 "EHLO mail-pw0-f42.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754200Ab0AETCP convert rfc822-to-8bit (ORCPT ); Tue, 5 Jan 2010 14:02:15 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:sender:in-reply-to:references:date :x-google-sender-auth:message-id:subject:from:to:cc:content-type :content-transfer-encoding; b=rI6iHAr7JaAyMOF/KvNJjGa7Gw6Dc7fYBZU+RAbm02SvIL53HEuxRktAiN8C91Lpda hctzxRN+chH8VQ/N6v0qgak4ZsAwVwY43+Mt3+3Giu4UqpdsZ0rm6IJliKE/w9VhDOps dkJV+hoMxfpmReB+9a2remXOTY2syvEUopPIc= MIME-Version: 1.0 In-Reply-To: <20100105110256.D2DF133C4B0@tippex.mynet.homeunix.org> References: <20100105110256.D2DF133C4B0@tippex.mynet.homeunix.org> Date: Tue, 5 Jan 2010 11:02:14 -0800 X-Google-Sender-Auth: 346cbdbf5165eba0 Message-ID: <86802c441001051102j547f10bga2b40fbaee9cf623@mail.gmail.com> Subject: Re: Memory probing fails after 2.6.30 (bisected) From: Yinghai Lu To: Anders Eriksson Cc: mingo@elte.hu, linux-kernel@vger.kernel.org Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 5581 Lines: 108 On Tue, Jan 5, 2010 at 3:02 AM, Anders Eriksson wrote: > > Hi, > > Upgrading my laptop's kernel, I discovered that it reboots immediately after > boot on .31 and later kernels. Grub loads it, but I cannot get one line of > text out of it before it reboots, even using boot_delay. > > Bisecting I came up with the following: > > git bisect start > # good: [07a2039b8eb0af4ff464efd3dfd95de5c02648c6] Linux 2.6.30 > git bisect good 07a2039b8eb0af4ff464efd3dfd95de5c02648c6 > # bad: [74fca6a42863ffacaf7ba6f1936a9f228950f657] Linux 2.6.31 > git bisect bad 74fca6a42863ffacaf7ba6f1936a9f228950f657 > # bad: [925d74ae717c9a12d3618eb4b36b9fb632e2cef3] V4L/DVB (11736): videobuf: modify return value of VIDIOC_REQBUFS ioctl > git bisect bad 925d74ae717c9a12d3618eb4b36b9fb632e2cef3 > # bad: [e349792a385ed47390d156155b1a1e19af1bf163] Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6 > git bisect bad e349792a385ed47390d156155b1a1e19af1bf163 > # bad: [c9059598ea8981d02356eead3188bf7fa4d717b8] Merge branch 'for-2.6.31' of git://git.kernel.dk/linux-2.6-block > git bisect bad c9059598ea8981d02356eead3188bf7fa4d717b8 > # bad: [59c288ffb6dfb55bdd6bfe6826ab6203ff791930] Merge branches 'frv' and 'mn10300' > git bisect bad 59c288ffb6dfb55bdd6bfe6826ab6203ff791930 > # bad: [3f6280ddf25fa656d0e17960588e52bee48a7547] Merge branch 'iommu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip > git bisect bad 3f6280ddf25fa656d0e17960588e52bee48a7547 > # good: [c44e3ed539e4fc17d6bcb5eaecb894a94de4cc5f] Merge branch 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip > git bisect good c44e3ed539e4fc17d6bcb5eaecb894a94de4cc5f > # bad: [be15f9d63b97da0065187696962331de6cd9de9e] Merge branch 'x86-xen-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip > git bisect bad be15f9d63b97da0065187696962331de6cd9de9e > # bad: [9b29e8228a5c2a169436a1a90a60b1f88cb35cd1] Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip > git bisect bad 9b29e8228a5c2a169436a1a90a60b1f88cb35cd1 > # bad: [35d5a9a61490bf39d2e48d7f499c8c801a39ebe9] x86: fix system without memory on node0 ---> Got a BIOS-88 map > git bisect bad 35d5a9a61490bf39d2e48d7f499c8c801a39ebe9 > # bad: [45fbe3ee01b8e463b28c2751b5dcc0cbdc142d90] x86, e820, pci: reserve extra free space near end of RAM ---> Got a BIOS-88 map > git bisect bad 45fbe3ee01b8e463b28c2751b5dcc0cbdc142d90 > # bad: [2b72394e4089643f11669d9610907a1442fe044a] x86: move max_pfn_mapped and max_low_pfn_mapped to setup.c ---> Got a BIOS-88 map > git bisect bad 2b72394e4089643f11669d9610907a1442fe044a > # good: [6424fb38667fffbbb1b90be0ffd9a0c540db6a4b] x86: remove (null) in /sys kernel_page_tables > git bisect good 6424fb38667fffbbb1b90be0ffd9a0c540db6a4b > # bad: [89388913f2c88a2cd15d24abab571b17a2596127] x86: unify noexec handling --> Got a BIOS-88 map > git bisect bad 89388913f2c88a2cd15d24abab571b17a2596127 > # bad: [8ecee4620e76aae418bfa0e8cc830e92cb559bbb] Merge branch 'linus' into x86/mm ---> Got a BIOS-88 map > git bisect bad 8ecee4620e76aae418bfa0e8cc830e92cb559bbb > > > I've annotated some bad kernels, where I _do_ get it to start, but it only > finds a BIOS-88 map (and hence only 16MB ram, and userspace triggers OOMK). > > I found your name in the commit bisect fingered, hence I turn to you for help. > > Here's a dmesg from the last known good kernel : > > Linux version 2.6.29-01001-g6424fb3 (root@korven) (gcc version 4.3.2 (Gentoo 4.3.2-r3 p1.6, pie-10.1.5) ) #22 SMP Tue Jan 5 11:12:56 CET 2010 > KERNEL supported cpus: > ?Intel GenuineIntel > ?AMD AuthenticAMD > ?NSC Geode by NSC > ?Cyrix CyrixInstead > ?Centaur CentaurHauls > ?Transmeta GenuineTMx86 > ?Transmeta TransmetaCPU > ?UMC UMC UMC UMC > BIOS-provided physical RAM map: > ?BIOS-e820: 0000000000000000 - 000000000009ae20 (usable) > ?BIOS-e820: 000000000009ae20 - 00000000000a0000 (reserved) > ?BIOS-e820: 00000000000e0000 - 0000000000100000 (reserved) > ?BIOS-e820: 0000000000100000 - 000000007f7d0000 (usable) > ?BIOS-e820: 000000007f7d0000 - 000000007f7e5600 (reserved) > ?BIOS-e820: 000000007f7e5600 - 000000007f7f8000 (ACPI NVS) > ?BIOS-e820: 000000007f7f8000 - 000000007f800000 (reserved) > ?BIOS-e820: 00000000fec00000 - 00000000fec01000 (reserved) > ?BIOS-e820: 00000000fed20000 - 00000000fed9b000 (reserved) > ?BIOS-e820: 00000000feda0000 - 00000000fedc0000 (reserved) > ?BIOS-e820: 00000000fee00000 - 00000000fee01000 (reserved) > ?BIOS-e820: 00000000ffb00000 - 00000000ffc00000 (reserved) > ?BIOS-e820: 00000000fff00000 - 0000000100000000 (reserved) > DMI 2.4 present. > last_pfn = 0x7f7d0 max_arch_pfn = 0x100000 > MTRR default type: uncachable > MTRR fixed ranges enabled: > ?00000-9FFFF write-back > ?A0000-BFFFF uncachable > ?C0000-CFFFF write-protect > ?D0000-EFFFF uncachable > ?F0000-FFFFF write-protect > MTRR variable ranges enabled: > ?0 base 000000000 mask F80000000 write-back > ?1 base F7F800000 mask FFF800000 uncachable > ?2 base 0FEDA0000 mask FFFFE0000 uncachable > ?3 disabled > ?4 disabled > ?5 disabled > ?6 disabled > ?7 disabled whole boot log with debug with boot command line? > > I can produce a pic of the dmesg for the fingered commit of needed. boot that with earlyprintk=vga please. YH -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/