linux-kernel - [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 21:15:01 +0800
From:   kernel test robot <rong.a.chen@...el.com>
To:     Mike Rapoport <rppt@...ux.vnet.ibm.com>
Cc:     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>,
        Andrew Morton <akpm@...ux-foundation.org>,
        LKML <linux-kernel@...r.kernel.org>, lkp@...org
Subject: [LKP] [mm] 68c37ccedc:
 BUG:kernel_hang_in_early-boot_stage,last_printk:early_console_in_setup_code

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          |
+-----------------------------------------------------------------------------+------------+------------+



early console in setup code
BUG: kernel hang in early-boot stage, last printk: early console in setup code
Linux version 4.19.0-rc8-12429-g68c37cc #2
Command line: ip=::::vm-vp-2G-10::dhcp root=/dev/ram0 user=lkp job=/lkp/jobs/scheduled/vm-vp-2G-10/boot-1-debian-x86_64-2018-04-03.cgz-68c37ccedcde10514898f4ba3b28c0de85c590d1-20181029-86192-158289k-3.yaml ARCH=x86_64 kconfig=x86_64-randconfig-a0-10272028 branch=linux-devel/devel-catchup-201810280034 commit=68c37ccedcde10514898f4ba3b28c0de85c590d1 BOOT_IMAGE=/pkg/linux/x86_64-randconfig-a0-10272028/gcc-7/68c37ccedcde10514898f4ba3b28c0de85c590d1/vmlinuz-4.19.0-rc8-12429-g68c37cc max_uptime=600 RESULT_ROOT=/result/boot/1/vm-vp-2G/debian-x86_64-2018-04-03.cgz/x86_64-randconfig-a0-10272028/gcc-7/68c37ccedcde10514898f4ba3b28c0de85c590d1/3 LKP_SERVER=inn debug apic=debug sysrq_always_enabled rcupdate.rcu_cpu_stall_timeout=100 net.ifnames=0 printk.devkmsg=on panic=-1 softlockup_panic=1 nmi_watchdog=panic oops=panic load_ramdisk=2 prompt_ramdisk=0 drbd.minor_count=8 systemd.log_level=err ignore_loglevel console=tty0 earlyprintk=ttyS0,115200 console=ttyS0,115200 vga=normal rw rcuperf.shutdown=0

Elapsed time: 670



To reproduce:

        git clone https://github.com/intel/lkp-tests.git
        cd lkp-tests
        bin/lkp qemu -k <bzImage> job-script # job-script is attached in this email



Thanks,
lkp

View attachment "config-4.19.0-rc8-12429-g68c37cc" of type "text/plain" (123378 bytes)

View attachment "job-script" of type "text/plain" (4430 bytes)

Download attachment "dmesg.xz" of type "application/x-xz" (1504 bytes)