linux-kernel - Re: [LKP] [mm] 68c37ccedc: BUG:kernel_hang_in_early-boot_stage,last_printk:early_console_in_setup

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Date:   Mon, 29 Oct 2018 15:47:11 -0700
From:   Andrew Morton <akpm@...ux-foundation.org>
To:     kernel test robot <rong.a.chen@...el.com>
Cc:     Mike Rapoport <rppt@...ux.vnet.ibm.com>,
        Stephen Rothwell <sfr@...b.auug.org.au>,
        Michal Hocko <mhocko@...e.com>,
        Catalin Marinas <catalin.marinas@....com>,
        Chris Zankel <chris@...kel.net>,
        "David S. Miller" <davem@...emloft.net>,
        Geert Uytterhoeven <geert@...ux-m68k.org>,
        Greentime Hu <green.hu@...il.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Guan Xuetao <gxt@....edu.cn>, Ingo Molnar <mingo@...hat.com>,
        "James E.J. Bottomley" <jejb@...isc-linux.org>,
        Jonas Bonn <jonas@...thpole.se>,
        Jonathan Corbet <corbet@....net>,
        Ley Foon Tan <lftan@...era.com>,
        Mark Salter <msalter@...hat.com>,
        Martin Schwidefsky <schwidefsky@...ibm.com>,
        Matt Turner <mattst88@...il.com>,
        Michael Ellerman <mpe@...erman.id.au>,
        Michal Simek <monstr@...str.eu>,
        Palmer Dabbelt <palmer@...ive.com>,
        Paul Burton <paul.burton@...s.com>,
        Richard Kuo <rkuo@...eaurora.org>,
        Richard Weinberger <richard@....at>,
        Rich Felker <dalias@...c.org>,
        Russell King <linux@...linux.org.uk>,
        Serge Semin <fancer.lancer@...il.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Tony Luck <tony.luck@...el.com>,
        Vineet Gupta <vgupta@...opsys.com>,
        Yoshinori Sato <ysato@...rs.sourceforge.jp>,
        LKML <linux-kernel@...r.kernel.org>, lkp@...org
Subject: Re: [LKP] [mm] 68c37ccedc:
 BUG:kernel_hang_in_early-boot_stage,last_printk:early_console_in_setup_code

On Mon, 29 Oct 2018 21:15:01 +0800 kernel test robot <rong.a.chen@...el.com> wrote:

> FYI, we noticed the following commit (built with gcc-7):
> 
> commit: 68c37ccedcde10514898f4ba3b28c0de85c590d1 ("mm: nobootmem: remove bootmem allocation APIs")
> https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master
> 
> in testcase: boot
> 
> on test machine: qemu-system-x86_64 -enable-kvm -cpu host -smp 2 -m 2G
> 
> caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):
> 
>
> +-----------------------------------------------------------------------------+------------+------------+
> |                                                                             | 6881a1e729 | 68c37ccedc |
> +-----------------------------------------------------------------------------+------------+------------+
> | boot_successes                                                              | 4          | 0          |
> | boot_failures                                                               | 0          | 4          |
> | BUG:kernel_hang_in_early-boot_stage,last_printk:early_console_in_setup_code | 0          | 4          |
> +-----------------------------------------------------------------------------+------------+------------+

Well that's irritating.

Does the problem remain when the entire patch series is applied?

mm-remove-config_no_bootmem.patch
mm-remove-config_no_bootmem-fix.patch
mm-remove-config_have_memblock.patch
mm-remove-config_have_memblock-fix.patch
mm-remove-config_have_memblock-fix-2.patch
mm-remove-config_have_memblock-fix-3.patch
mm-remove-bootmem-allocator-implementation.patch
mm-nobootmem-remove-dead-code.patch
memblock-rename-memblock_alloc_nid_try_nid-to-memblock_phys_alloc.patch
memblock-remove-_virt-from-apis-returning-virtual-address.patch
memblock-replace-alloc_bootmem_align-with-memblock_alloc.patch
memblock-replace-alloc_bootmem_low-with-memblock_alloc_low.patch
memblock-replace-__alloc_bootmem_node_nopanic-with-memblock_alloc_try_nid_nopanic.patch
memblock-replace-alloc_bootmem_pages_nopanic-with-memblock_alloc_nopanic.patch
memblock-replace-alloc_bootmem_low-with-memblock_alloc_low-2.patch
memblock-replace-__alloc_bootmem_nopanic-with-memblock_alloc_from_nopanic.patch
memblock-add-align-parameter-to-memblock_alloc_node.patch
memblock-replace-alloc_bootmem_pages_node-with-memblock_alloc_node.patch
memblock-replace-__alloc_bootmem_node-with-appropriate-memblock_-api.patch
memblock-replace-alloc_bootmem_node-with-memblock_alloc_node.patch
memblock-replace-alloc_bootmem_low_pages-with-memblock_alloc_low.patch
memblock-replace-alloc_bootmem_pages-with-memblock_alloc.patch
memblock-replace-__alloc_bootmem-with-memblock_alloc_from.patch
memblock-replace-alloc_bootmem-with-memblock_alloc.patch
mm-nobootmem-remove-bootmem-allocation-apis.patch
memblock-replace-free_bootmem_node-with-memblock_free.patch
memblock-replace-free_bootmem_late-with-memblock_free_late.patch
memblock-rename-free_all_bootmem-to-memblock_free_all.patch
memblock-rename-__free_pages_bootmem-to-memblock_free_pages.patch
mm-remove-nobootmem.patch
memblock-replace-bootmem_alloc_-with-memblock-variants.patch
mm-remove-include-linux-bootmemh.patch
mm-remove-include-linux-bootmemh-fix.patch
mm-remove-include-linux-bootmemh-fix-2.patch
mm-remove-include-linux-bootmemh-fix-3.patch
docs-boot-time-mm-remove-bootmem-documentation.patch