linux-kernel - Re: [PATCH 1/7] Apply transparent

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Date:   Sat, 17 Sep 2016 07:37:53 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Stafford Horne <shorne@...il.com>
Cc:     kbuild-all@...org, Jonas Bonn <jonas@...thpole.se>,
        Stefan Kristiansson <stefan.kristiansson@...nalahti.fi>,
        Andrew Morton <akpm@...ux-foundation.org>,
        linux-kernel@...r.kernel.org, Stafford Horne <shorne@...il.com>
Subject: Re: [PATCH 1/7] Apply transparent_union attribute to union semun

Hi Jonas,

[auto build test ERROR on linus/master]
[also build test ERROR on v4.8-rc6 next-20160916]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
[Suggest to use git(>=2.9.0) format-patch --base=<commit> (or --base=auto for convenience) to record what (public, well-known) commit your patch series was built on]
[Check https://git-scm.com/docs/git-format-patch for more information]

url:    https://github.com/0day-ci/linux/commits/Stafford-Horne/openrisc-Misc-fixes-from-backlog/20160916-230114
config: x86_64-randconfig-b0-09170504 (attached as .config)
compiler: gcc-4.4 (Debian 4.4.7-8) 4.4.7
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All errors (new ones prefixed by >>):

   cc1: warnings being treated as errors
   In file included from include/linux/sem.h:7,
                    from include/linux/sched.h:35,
                    from include/linux/kasan.h:4,
                    from include/linux/slab.h:118,
                    from include/linux/resource_ext.h:19,
                    from include/linux/acpi.h:26,
                    from drivers/gpu/drm/i915/i915_drv.c:30:
>> include/uapi/linux/sem.h:51: error: union cannot be made transparent

vim +51 include/uapi/linux/sem.h

    45	union semun {
    46		int val;			/* value for SETVAL */
    47		struct semid_ds __user *buf;	/* buffer for IPC_STAT & IPC_SET */
    48		unsigned short __user *array;	/* array for GETALL & SETALL */
    49		struct seminfo __user *__buf;	/* buffer for IPC_INFO */
    50		void __user *__pad;
  > 51	} __attribute__ ((transparent_union));
    52	
    53	struct  seminfo {
    54		int semmap;

---
0-DAY kernel test infrastructure                Open Source Technology Center
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