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Date:   Fri, 21 Jul 2017 09:59:41 +0800
From:   Ye Xiaolong <xiaolong.ye@...el.com>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     Ananth N Mavinakayanahalli <ananth@...ux.vnet.ibm.com>,
        Anil S Keshavamurthy <anil.s.keshavamurthy@...el.com>,
        Masami Hiramatsu <mhiramat@...nel.org>,
        Daniel Micay <danielmicay@...il.com>,
        Kees Cook <keescook@...omium.org>,
        Arnd Bergmann <arnd@...db.de>,
        Mark Rutland <mark.rutland@....com>,
        Daniel Axtens <dja@...ens.net>,
        Rasmus Villemoes <linux@...musvillemoes.dk>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Chris Metcalf <cmetcalf@...hip.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        "H. Peter Anvin" <hpa@...or.com>, Ingo Molnar <mingo@...e.hu>,
        Andrew Morton <akpm@...ux-foundation.org>,
        LKML <linux-kernel@...r.kernel.org>, LKP <lkp@...org>
Subject: Re: [lkp-robot] [include/linux/string.h] 6974f0c455:
 kernel_BUG_at_lib/string.c

Hi,

On 07/19, Linus Torvalds wrote:
>Hmm. I wonder why the kernel test robot ends up having that annoying
>line doubling for the dmesg.
>

Hmm, this line doubling issue should be caused by we set both
'earlyprintk=ttyS0,115200' and 'console=ttyS0,115200' in cmdline, after I
remove any of it, this issue is gone, is it an inappropriate setting?

FYI, the whole kernel command line is:

ip=::::vm-lkp-nhm-dp1-yocto-i386-7::dhcp
root=/dev/ram0
user=lkp
job=/lkp/scheduled/vm-lkp-nhm-dp1-yocto-i386-7/boot-1-yocto-tiny-i386-2016-04-22.cgz-6974f0c4555e285ab217cee58b6e874f776ff409-20170717-28286-131pyzw-0.yaml
ARCH=i386
kconfig=i386-randconfig-w0-07171351
branch=linus/master
commit=6974f0c4555e285ab217cee58b6e874f776ff409
BOOT_IMAGE=/pkg/linux/i386-randconfig-w0-07171351/gcc-6/6974f0c4555e285ab217cee58b6e874f776ff409/vmlinuz-4.12.0-10998-g6974f0c
max_uptime=600
RESULT_ROOT=/result/boot/1/vm-lkp-nhm-dp1-yocto-i386/yocto-tiny-i386-2016-04-22.cgz/i386-randconfig-w0-07171351/gcc-6/6974f0c4555e285ab217cee58b6e874f776ff409/0
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=

Thanks,
Xiaolong

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