linux-kernel - Re: [PATCH RFC v3 2/2] pidns: introduce syscall getvpid

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Message-ID: <201509281251.xxfjYZb4%fengguang.wu@intel.com>
Date:	Mon, 28 Sep 2015 12:12:21 +0800
From:	kbuild test robot <lkp@...el.com>
To:	Konstantin Khlebnikov <khlebnikov@...dex-team.ru>
Cc:	kbuild-all@...org, linux-api@...r.kernel.org,
	containers@...ts.linux-foundation.org,
	linux-kernel@...r.kernel.org,
	Roman Gushchin <klamm@...dex-team.ru>,
	Serge Hallyn <serge.hallyn@...ntu.com>,
	Oleg Nesterov <oleg@...hat.com>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Chen Fan <chen.fan.fnst@...fujitsu.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Stéphane Graber <stgraber@...ntu.com>
Subject: Re: [PATCH RFC v3 2/2] pidns: introduce syscall getvpid

Hi Konstantin,

[auto build test results on next-20150925 -- if it's inappropriate base, please ignore]

config: openrisc-or1ksim_defconfig (attached as .config)
reproduce:
  wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
  chmod +x ~/bin/make.cross
  git checkout 7bea85b3c058d69527d79b94338025f218a0655e
  # save the attached .config to linux build tree
  make.cross ARCH=openrisc 

All warnings (new ones prefixed by >>):

   In file included from include/asm-generic/unistd.h:1:0,
                    from arch/openrisc/include/uapi/asm/unistd.h:26,
                    from <stdin>:2:
>> include/uapi/asm-generic/unistd.h:718:0: warning: "__NR_mlock2" redefined
   include/uapi/asm-generic/unistd.h:716:0: note: this is the location of the previous definition
   <stdin>:1307:2: warning: #warning syscall getvpid not implemented
--
   In file included from include/asm-generic/unistd.h:1:0,
                    from arch/openrisc/include/uapi/asm/unistd.h:26,
                    from include/uapi/linux/unistd.h:7,
                    from arch/openrisc/kernel/setup.c:25:
>> include/uapi/asm-generic/unistd.h:718:0: warning: "__NR_mlock2" redefined
   include/uapi/asm-generic/unistd.h:716:0: note: this is the location of the previous definition
--
   In file included from include/asm-generic/unistd.h:1:0,
                    from arch/openrisc/include/uapi/asm/unistd.h:26,
                    from include/uapi/linux/unistd.h:7,
                    from include/linux/syscalls.h:78,
                    from arch/openrisc/kernel/sys_call_table.c:17:
>> include/uapi/asm-generic/unistd.h:718:0: warning: "__NR_mlock2" redefined
   include/uapi/asm-generic/unistd.h:716:0: note: this is the location of the previous definition
   In file included from include/asm-generic/unistd.h:1:0,
                    from arch/openrisc/include/uapi/asm/unistd.h:26,
                    from arch/openrisc/kernel/sys_call_table.c:27:
   include/uapi/asm-generic/unistd.h:716:0: warning: "__NR_mlock2" redefined
   include/uapi/asm-generic/unistd.h:718:0: note: this is the location of the previous definition
>> include/uapi/asm-generic/unistd.h:718:0: warning: "__NR_mlock2" redefined
   include/uapi/asm-generic/unistd.h:716:0: note: this is the location of the previous definition
   include/uapi/asm-generic/unistd.h:719:1: error: '__NR_getvpid' undeclared here (not in a function)
   include/uapi/asm-generic/unistd.h:719:1: error: array index in initializer not of integer type
   include/uapi/asm-generic/unistd.h:719:1: error: (near initialization for 'sys_call_table')
--
   kernel/time/Kconfig:155:warning: range is invalid
   In file included from include/asm-generic/unistd.h:1:0,
                    from arch/openrisc/include/uapi/asm/unistd.h:26,
                    from <stdin>:2:
>> include/uapi/asm-generic/unistd.h:718:0: warning: "__NR_mlock2" redefined
   include/uapi/asm-generic/unistd.h:716:0: note: this is the location of the previous definition
   <stdin>:1307:2: warning: #warning syscall getvpid not implemented

vim +/__NR_mlock2 +718 include/uapi/asm-generic/unistd.h

   702	#define __NR_seccomp 277
   703	__SYSCALL(__NR_seccomp, sys_seccomp)
   704	#define __NR_getrandom 278
   705	__SYSCALL(__NR_getrandom, sys_getrandom)
   706	#define __NR_memfd_create 279
   707	__SYSCALL(__NR_memfd_create, sys_memfd_create)
   708	#define __NR_bpf 280
   709	__SYSCALL(__NR_bpf, sys_bpf)
   710	#define __NR_execveat 281
   711	__SC_COMP(__NR_execveat, sys_execveat, compat_sys_execveat)
   712	#define __NR_userfaultfd 282
   713	__SYSCALL(__NR_userfaultfd, sys_userfaultfd)
   714	#define __NR_membarrier 283
   715	__SYSCALL(__NR_membarrier, sys_membarrier)
   716	#define __NR_mlock2 284
   717	__SYSCALL(__NR_mlock2, sys_mlock2)
 > 718	#define __NR_mlock2 285
   719	__SYSCALL(__NR_getvpid, sys_getvpid)
   720	
   721	#undef __NR_syscalls
   722	#define __NR_syscalls 286
   723	
   724	/*
   725	 * All syscalls below here should go away really,
   726	 * these are provided for both review and as a porting

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