linux-kernel - Re: [lkp-robot] [include/linux/string.h] 6974f0c455: kernel_BUG_at

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Date:   Fri, 21 Jul 2017 12:15:09 +0300
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Ye Xiaolong <xiaolong.ye@...el.com>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>,
        pmladek@...e.com
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>,
        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

On Fri, 2017-07-21 at 09:59 +0800, Ye Xiaolong wrote:
> 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?


I think this problem is being discussed for a long time.

+Cc: Petr and Sergey

> 
> 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

-- 
Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Intel Finland Oy