linux-kernel - [lkp-robot] [x86/tsc] 07e7eaa3bc: BUG:kernel_reboot-without-warning_in_early-boot

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Message-ID: <20170328010849.GF17604@yexl-desktop>
Date:   Tue, 28 Mar 2017 09:08:49 +0800
From:   kernel test robot <xiaolong.ye@...el.com>
To:     Pavel Tatashin <pasha.tatashin@...cle.com>
Cc:     x86@...nel.org, linux-kernel@...r.kernel.org, mingo@...hat.com,
        peterz@...radead.org, tglx@...utronix.de, hpa@...or.com, lkp@...org
Subject: [lkp-robot] [x86/tsc]  07e7eaa3bc:
 BUG:kernel_reboot-without-warning_in_early-boot_stage


FYI, we noticed the following commit:

commit: 07e7eaa3bc3a152ecd015f644ba2867fdb49ca4c ("x86/tsc: use tsc early")
url: https://github.com/0day-ci/linux/commits/Pavel-Tatashin/Early-boot-time-stamps-for-x86/20170326-100724


in testcase: boot

on test machine: qemu-system-x86_64 -enable-kvm -m 420M

caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):


+-----------------------------------------------------------------------------------------------+------------+------------+
|                                                                                               | ca0f45435f | 07e7eaa3bc |
+-----------------------------------------------------------------------------------------------+------------+------------+
| boot_successes                                                                                | 12         | 0          |
| boot_failures                                                                                 | 0          | 12         |
| BUG:kernel_reboot-without-warning_in_early-boot_stage,last_printk:early_console_in_setup_code | 0          | 12         |
+-----------------------------------------------------------------------------------------------+------------+------------+



early console in setup code

Elapsed time: 10
BUG: kernel reboot-without-warning in early-boot stage, last printk: early console in setup code
Linux version 4.11.0-rc2-00235-g07e7eaa #1
Command line: ip=::::vm-lkp-nhm-dp1-openwrt-ia32-2::dhcp root=/dev/ram0 user=lkp job=/lkp/scheduled/vm-lkp-nhm-dp1-openwrt-ia32-2/boot-1-openwrt-i386-2016-03-16.cgz-07e7eaa3bc3a152ecd015f644ba2867fdb49ca4c-20170327-61570-cbwvy5-0.yaml ARCH=x86_64 kconfig=x86_64-randconfig-v0-03270418 branch=linux-devel/devel-spot-201703270150 commit=07e7eaa3bc3a152ecd015f644ba2867fdb49ca4c BOOT_IMAGE=/pkg/linux/x86_64-randconfig-v0-03270418/gcc-6/07e7eaa3bc3a152ecd015f644ba2867fdb49ca4c/vmlinuz-4.11.0-rc2-00235-g07e7eaa max_uptime=600 RESULT_ROOT=/result/boot/1/vm-lkp-nhm-dp1-openwrt-ia32/openwrt-i386-2016-03-16.cgz/x86_64-randconfig-v0-03270418/gcc-6/07e7eaa3bc3a152ecd015f644ba2867fdb49ca4c/0 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 earlyprintk=ttyS0,115200 console=ttyS0,115200 console=tty0 vga=normal rw drbd.minor_count=8

initrds=(
	/osimage/openwrt/openwrt-i386-2016-03-16.cgz


To reproduce:

        git clone https://github.com/01org/lkp-tests.git
        cd lkp-tests
        bin/lkp qemu -k <bzImage> job-script  # job-script is attached in this email



Thanks,
Xiaolong

View attachment "config-4.11.0-rc2-00235-g07e7eaa" of type "text/plain" (112601 bytes)

View attachment "job-script" of type "text/plain" (3955 bytes)

Download attachment "dmesg.xz" of type "application/octet-stream" (1148 bytes)