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Date:   Sat, 18 May 2019 09:02:55 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Roberto Sassu <roberto.sassu@...wei.com>
Cc:     kbuild-all@...org, viro@...iv.linux.org.uk,
        linux-security-module@...r.kernel.org,
        linux-integrity@...r.kernel.org, initramfs@...r.kernel.org,
        linux-api@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        linux-kernel@...r.kernel.org, zohar@...ux.vnet.ibm.com,
        silviu.vlasceanu@...wei.com, dmitry.kasatkin@...wei.com,
        takondra@...co.com, kamensky@...co.com, hpa@...or.com,
        arnd@...db.de, rob@...dley.net, james.w.mcmechan@...il.com,
        niveditas98@...il.com, Roberto Sassu <roberto.sassu@...wei.com>
Subject: Re: [PATCH v3 2/2] initramfs: introduce do_readxattrs()

Hi Roberto,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on linus/master]
[also build test ERROR on v5.1 next-20190517]
[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/Roberto-Sassu/initramfs-set-extended-attributes/20190518-055846
config: m68k-allyesconfig (attached as .config)
compiler: m68k-linux-gnu-gcc (Debian 7.2.0-11) 7.2.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        GCC_VERSION=7.2.0 make.cross ARCH=m68k 

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@...el.com>

All error/warnings (new ones prefixed by >>):

   init/initramfs.c: In function 'do_readxattrs':
   init/initramfs.c:437:10: error: implicit declaration of function 'vmalloc'; did you mean 'kvmalloc'? [-Werror=implicit-function-declaration]
      path = vmalloc(file_entry_size);
             ^~~~~~~
             kvmalloc
   init/initramfs.c:437:8: warning: assignment makes pointer from integer without a cast [-Wint-conversion]
      path = vmalloc(file_entry_size);
           ^
   init/initramfs.c:461:3: error: implicit declaration of function 'vfree'; did you mean 'kvfree'? [-Werror=implicit-function-declaration]
      vfree(path);
      ^~~~~
      kvfree
   In file included from include/asm-generic/io.h:891:0,
                    from arch/m68k/include/asm/io.h:11,
                    from include/linux/kexec.h:19,
                    from init/initramfs.c:694:
   include/linux/vmalloc.h: At top level:
>> include/linux/vmalloc.h:77:14: error: conflicting types for 'vmalloc'
    extern void *vmalloc(unsigned long size);
                 ^~~~~~~
   init/initramfs.c:437:10: note: previous implicit declaration of 'vmalloc' was here
      path = vmalloc(file_entry_size);
             ^~~~~~~
   In file included from include/asm-generic/io.h:891:0,
                    from arch/m68k/include/asm/io.h:11,
                    from include/linux/kexec.h:19,
                    from init/initramfs.c:694:
>> include/linux/vmalloc.h:102:13: warning: conflicting types for 'vfree'
    extern void vfree(const void *addr);
                ^~~~~
   init/initramfs.c:461:3: note: previous implicit declaration of 'vfree' was here
      vfree(path);
      ^~~~~
   cc1: some warnings being treated as errors

vim +/vmalloc +77 include/linux/vmalloc.h

db64fe02 Nick Piggin       2008-10-18   76  
^1da177e Linus Torvalds    2005-04-16  @77  extern void *vmalloc(unsigned long size);
e1ca7788 Dave Young        2010-10-26   78  extern void *vzalloc(unsigned long size);
83342314 Nick Piggin       2006-06-23   79  extern void *vmalloc_user(unsigned long size);
930fc45a Christoph Lameter 2005-10-29   80  extern void *vmalloc_node(unsigned long size, int node);
e1ca7788 Dave Young        2010-10-26   81  extern void *vzalloc_node(unsigned long size, int node);
^1da177e Linus Torvalds    2005-04-16   82  extern void *vmalloc_exec(unsigned long size);
^1da177e Linus Torvalds    2005-04-16   83  extern void *vmalloc_32(unsigned long size);
83342314 Nick Piggin       2006-06-23   84  extern void *vmalloc_32_user(unsigned long size);
dd0fc66f Al Viro           2005-10-07   85  extern void *__vmalloc(unsigned long size, gfp_t gfp_mask, pgprot_t prot);
d0a21265 David Rientjes    2011-01-13   86  extern void *__vmalloc_node_range(unsigned long size, unsigned long align,
d0a21265 David Rientjes    2011-01-13   87  			unsigned long start, unsigned long end, gfp_t gfp_mask,
cb9e3c29 Andrey Ryabinin   2015-02-13   88  			pgprot_t prot, unsigned long vm_flags, int node,
cb9e3c29 Andrey Ryabinin   2015-02-13   89  			const void *caller);
1f5307b1 Michal Hocko      2017-05-08   90  #ifndef CONFIG_MMU
a7c3e901 Michal Hocko      2017-05-08   91  extern void *__vmalloc_node_flags(unsigned long size, int node, gfp_t flags);
8594a21c Michal Hocko      2017-05-12   92  static inline void *__vmalloc_node_flags_caller(unsigned long size, int node,
8594a21c Michal Hocko      2017-05-12   93  						gfp_t flags, void *caller)
1f5307b1 Michal Hocko      2017-05-08   94  {
8594a21c Michal Hocko      2017-05-12   95  	return __vmalloc_node_flags(size, node, flags);
1f5307b1 Michal Hocko      2017-05-08   96  }
8594a21c Michal Hocko      2017-05-12   97  #else
8594a21c Michal Hocko      2017-05-12   98  extern void *__vmalloc_node_flags_caller(unsigned long size,
8594a21c Michal Hocko      2017-05-12   99  					 int node, gfp_t flags, void *caller);
1f5307b1 Michal Hocko      2017-05-08  100  #endif
cb9e3c29 Andrey Ryabinin   2015-02-13  101  
b3bdda02 Christoph Lameter 2008-02-04 @102  extern void vfree(const void *addr);
bf22e37a Andrey Ryabinin   2016-12-12  103  extern void vfree_atomic(const void *addr);
^1da177e Linus Torvalds    2005-04-16  104  

:::::: The code at line 77 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>

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

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