linux-kernel - Re: [PATCH v2 2/3] Run dump pipe in container's namespace

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Date:	Fri, 18 Mar 2016 22:06:27 +0800
From:	kbuild test robot <lkp@...el.com>
To:	Zhao Lei <zhaolei@...fujitsu.com>
Cc:	kbuild-all@...org, linux-kernel@...r.kernel.org,
	containers@...ts.linux-foundation.org,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Mateusz Guzik <mguzik@...hat.com>,
	Zhao Lei <zhaolei@...fujitsu.com>
Subject: Re: [PATCH v2 2/3] Run dump pipe in container's namespace

Hi Zhao,

[auto build test ERROR on tip/sched/core]
[also build test ERROR on v4.5 next-20160318]
[if your patch is applied to the wrong git tree, please drop us a note to help improving the system]

url:    https://github.com/0day-ci/linux/commits/Zhao-Lei/Make-core_pattern-support-namespace/20160318-205506
config: um-x86_64_defconfig (attached as .config)
reproduce:
        # save the attached .config to linux build tree
        make ARCH=um SUBARCH=x86_64

All errors (new ones prefixed by >>):

   kernel/time/Kconfig:155:warning: range is invalid
   In file included from arch/x86/um/asm/elf.h:9:0,
                    from include/linux/elf.h:4,
                    from arch/x86/um/shared/sysdep/kernel-offsets.h:3,
                    from arch/um/kernel/asm-offsets.c:1:
>> arch/um/include/shared/skas/skas.h:13:12: error: conflicting types for 'user_thread'
    extern int user_thread(unsigned long stack, int flags);
               ^
   In file included from arch/x86/um/shared/sysdep/kernel-offsets.h:2:0,
                    from arch/um/kernel/asm-offsets.c:1:
   include/linux/sched.h:2652:14: note: previous declaration of 'user_thread' was here
    extern pid_t user_thread(int (*fn)(void *), void *arg, unsigned long flags);
                 ^
   make[2]: *** [arch/um/kernel/asm-offsets.s] Error 1
   make[2]: Target '__build' not remade because of errors.
   make[1]: *** [prepare0] Error 2
   make[1]: Target 'prepare' not remade because of errors.
   make: *** [sub-make] Error 2

vim +/user_thread +13 arch/um/include/shared/skas/skas.h

^1da177e4c arch/um/kernel/skas/include/skas.h Linus Torvalds 2005-04-16   7  #define __SKAS_H
^1da177e4c arch/um/kernel/skas/include/skas.h Linus Torvalds 2005-04-16   8  
37185b3324 arch/um/include/shared/skas/skas.h Al Viro        2012-10-08   9  #include <sysdep/ptrace.h>
^1da177e4c arch/um/kernel/skas/include/skas.h Linus Torvalds 2005-04-16  10  
^1da177e4c arch/um/kernel/skas/include/skas.h Linus Torvalds 2005-04-16  11  extern int userspace_pid[];
^1da177e4c arch/um/kernel/skas/include/skas.h Linus Torvalds 2005-04-16  12  
^1da177e4c arch/um/kernel/skas/include/skas.h Linus Torvalds 2005-04-16 @13  extern int user_thread(unsigned long stack, int flags);
3c91735099 arch/um/include/skas/skas.h        Jeff Dike      2006-09-27  14  extern void new_thread_handler(void);
77bf440031 arch/um/include/skas/skas.h        Jeff Dike      2007-10-16  15  extern void handle_syscall(struct uml_pt_regs *regs);
^1da177e4c arch/um/kernel/skas/include/skas.h Linus Torvalds 2005-04-16  16  extern long execute_syscall_skas(void *r);

:::::: The code at line 13 was first introduced by commit
:::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2

:::::: TO: Linus Torvalds <torvalds@...970.osdl.org>
:::::: CC: Linus Torvalds <torvalds@...970.osdl.org>

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0-DAY kernel test infrastructure                Open Source Technology Center
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