linux-kernel - Re: [PATCH] um: Avoid longjmp/setjmp symbol clashes with libpthread.a

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Message-ID: <201705250050.DYFHgp0l%fengguang.wu@intel.com>
Date:   Thu, 25 May 2017 00:21:48 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Florian Fainelli <f.fainelli@...il.com>
Cc:     kbuild-all@...org, linux-kernel@...r.kernel.org,
        Florian Fainelli <f.fainelli@...il.com>,
        Jeff Dike <jdike@...toit.com>,
        Richard Weinberger <richard@....at>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        "H. Peter Anvin" <hpa@...or.com>,
        "maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)" <x86@...nel.org>,
        "open list:USER-MODE LINUX (UML)" 
        <user-mode-linux-devel@...ts.sourceforge.net>,
        "open list:USER-MODE LINUX (UML)" 
        <user-mode-linux-user@...ts.sourceforge.net>
Subject: Re: [PATCH] um: Avoid longjmp/setjmp symbol clashes with libpthread.a

Hi Florian,

[auto build test ERROR on linus/master]
[also build test ERROR on v4.12-rc2 next-20170524]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Florian-Fainelli/um-Avoid-longjmp-setjmp-symbol-clashes-with-libpthread-a/20170524-154948
config: um-allnoconfig (attached as .config)
compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
reproduce:
        # save the attached .config to linux build tree
        make ARCH=um 

All errors (new ones prefixed by >>):

   arch/um/kernel/built-in.o: In function `segv':
>> (.text+0x34bd): undefined reference to `kernel_longjmp'
   arch/um/kernel/built-in.o: In function `bus_handler':
   (.text+0x38c6): undefined reference to `kernel_longjmp'
   arch/um/os-Linux/built-in.o: In function `switch_threads':
   (.text+0x4e7d): undefined reference to `kernel_longjmp'
   arch/um/os-Linux/built-in.o: In function `start_idle_thread':
   (.text+0x4f20): undefined reference to `kernel_longjmp'
   arch/um/os-Linux/built-in.o: In function `start_idle_thread':
   (.text+0x4f58): undefined reference to `kernel_longjmp'
   arch/um/os-Linux/built-in.o:(.text+0x4fab): more undefined references to `kernel_longjmp' follow
   collect2: error: ld returned 1 exit status

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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