tree:   https://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2.git 
trusted-xattr
head:   533310c3f8a7c01b324d68200d1578b416b681d3
commit: 533310c3f8a7c01b324d68200d1578b416b681d3 [2/2] gfs2: Add trusted xattr 
support
config: riscv-randconfig-r014-20201112 (attached as .config)
compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project 
a7b65741441556d295079fc4f2391d99fd1c1111)
reproduce (this is a W=1 build):
        wget 
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O 
~/bin/make.cross
        chmod +x ~/bin/make.cross
        # install riscv cross compiling tool for clang build
        # apt-get install binutils-riscv64-linux-gnu
        # 
https://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2.git/commit/?id=533310c3f8a7c01b324d68200d1578b416b681d3
        git remote add gfs2 
https://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2.git
        git fetch --no-tags gfs2 trusted-xattr
        git checkout 533310c3f8a7c01b324d68200d1578b416b681d3
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=riscv 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <[email protected]>

All warnings (new ones prefixed by >>):

   #define inw(c)          ({ u16 __v; __io_pbr(); __v = 
readw_cpu((void*)(PCI_IOBASE + (c))); __io_par(__v); __v; })
                                                                           
~~~~~~~~~~ ^
   arch/riscv/include/asm/mmio.h:88:76: note: expanded from macro 'readw_cpu'
   #define readw_cpu(c)            ({ u16 __r = le16_to_cpu((__force 
__le16)__raw_readw(c)); __r; })
                                                                                
        ^
   include/uapi/linux/byteorder/little_endian.h:36:51: note: expanded from 
macro '__le16_to_cpu'
   #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
                                                     ^
   In file included from fs/gfs2/xattr.c:10:
   In file included from include/linux/buffer_head.h:14:
   In file included from include/linux/pagemap.h:11:
   In file included from include/linux/highmem.h:10:
   In file included from include/linux/hardirq.h:10:
   In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
   In file included from include/asm-generic/hardirq.h:13:
   In file included from include/linux/irq.h:20:
   In file included from include/linux/io.h:13:
   In file included from arch/riscv/include/asm/io.h:149:
   include/asm-generic/io.h:572:9: warning: performing pointer arithmetic on a 
null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           return inl(addr);
                  ^~~~~~~~~
   arch/riscv/include/asm/io.h:57:76: note: expanded from macro 'inl'
   #define inl(c)          ({ u32 __v; __io_pbr(); __v = 
readl_cpu((void*)(PCI_IOBASE + (c))); __io_par(__v); __v; })
                                                                           
~~~~~~~~~~ ^
   arch/riscv/include/asm/mmio.h:89:76: note: expanded from macro 'readl_cpu'
   #define readl_cpu(c)            ({ u32 __r = le32_to_cpu((__force 
__le32)__raw_readl(c)); __r; })
                                                                                
        ^
   include/uapi/linux/byteorder/little_endian.h:34:51: note: expanded from 
macro '__le32_to_cpu'
   #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
                                                     ^
   In file included from fs/gfs2/xattr.c:10:
   In file included from include/linux/buffer_head.h:14:
   In file included from include/linux/pagemap.h:11:
   In file included from include/linux/highmem.h:10:
   In file included from include/linux/hardirq.h:10:
   In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
   In file included from include/asm-generic/hardirq.h:13:
   In file included from include/linux/irq.h:20:
   In file included from include/linux/io.h:13:
   In file included from arch/riscv/include/asm/io.h:149:
   include/asm-generic/io.h:580:2: warning: performing pointer arithmetic on a 
null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           outb(value, addr);
           ^~~~~~~~~~~~~~~~~
   arch/riscv/include/asm/io.h:59:68: note: expanded from macro 'outb'
   #define outb(v,c)       ({ __io_pbw(); writeb_cpu((v),(void*)(PCI_IOBASE + 
(c))); __io_paw(); })
                                                                 ~~~~~~~~~~ ^
   arch/riscv/include/asm/mmio.h:91:52: note: expanded from macro 'writeb_cpu'
   #define writeb_cpu(v, c)        ((void)__raw_writeb((v), (c)))
                                                             ^
   In file included from fs/gfs2/xattr.c:10:
   In file included from include/linux/buffer_head.h:14:
   In file included from include/linux/pagemap.h:11:
   In file included from include/linux/highmem.h:10:
   In file included from include/linux/hardirq.h:10:
   In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
   In file included from include/asm-generic/hardirq.h:13:
   In file included from include/linux/irq.h:20:
   In file included from include/linux/io.h:13:
   In file included from arch/riscv/include/asm/io.h:149:
   include/asm-generic/io.h:588:2: warning: performing pointer arithmetic on a 
null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           outw(value, addr);
           ^~~~~~~~~~~~~~~~~
   arch/riscv/include/asm/io.h:60:68: note: expanded from macro 'outw'
   #define outw(v,c)       ({ __io_pbw(); writew_cpu((v),(void*)(PCI_IOBASE + 
(c))); __io_paw(); })
                                                                 ~~~~~~~~~~ ^
   arch/riscv/include/asm/mmio.h:92:76: note: expanded from macro 'writew_cpu'
   #define writew_cpu(v, c)        ((void)__raw_writew((__force 
u16)cpu_to_le16(v), (c)))
                                                                                
     ^
   In file included from fs/gfs2/xattr.c:10:
   In file included from include/linux/buffer_head.h:14:
   In file included from include/linux/pagemap.h:11:
   In file included from include/linux/highmem.h:10:
   In file included from include/linux/hardirq.h:10:
   In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
   In file included from include/asm-generic/hardirq.h:13:
   In file included from include/linux/irq.h:20:
   In file included from include/linux/io.h:13:
   In file included from arch/riscv/include/asm/io.h:149:
   include/asm-generic/io.h:596:2: warning: performing pointer arithmetic on a 
null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           outl(value, addr);
           ^~~~~~~~~~~~~~~~~
   arch/riscv/include/asm/io.h:61:68: note: expanded from macro 'outl'
   #define outl(v,c)       ({ __io_pbw(); writel_cpu((v),(void*)(PCI_IOBASE + 
(c))); __io_paw(); })
                                                                 ~~~~~~~~~~ ^
   arch/riscv/include/asm/mmio.h:93:76: note: expanded from macro 'writel_cpu'
   #define writel_cpu(v, c)        ((void)__raw_writel((__force 
u32)cpu_to_le32(v), (c)))
                                                                                
     ^
   In file included from fs/gfs2/xattr.c:10:
   In file included from include/linux/buffer_head.h:14:
   In file included from include/linux/pagemap.h:11:
   In file included from include/linux/highmem.h:10:
   In file included from include/linux/hardirq.h:10:
   In file included from ./arch/riscv/include/generated/asm/hardirq.h:1:
   In file included from include/asm-generic/hardirq.h:13:
   In file included from include/linux/irq.h:20:
   In file included from include/linux/io.h:13:
   In file included from arch/riscv/include/asm/io.h:149:
   include/asm-generic/io.h:1005:55: warning: performing pointer arithmetic on 
a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
           return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
                                                     ~~~~~~~~~~ ^
>> fs/gfs2/xattr.c:73:6: warning: no previous prototype for function 
>> 'gfs2_eatype_valid' [-Wmissing-prototypes]
   bool gfs2_eatype_valid(struct gfs2_sbd *sdp, u8 type)
        ^
   fs/gfs2/xattr.c:73:1: note: declare 'static' if the function is not intended 
to be used outside of this translation unit
   bool gfs2_eatype_valid(struct gfs2_sbd *sdp, u8 type)
   ^
   static 
   8 warnings generated.

vim +/gfs2_eatype_valid +73 fs/gfs2/xattr.c

    72  
  > 73  bool gfs2_eatype_valid(struct gfs2_sbd *sdp, u8 type)
    74  {
    75          switch(sdp->sd_sb.sb_fs_format) {
    76          case GFS2_FORMAT_FS_MAX:
    77                  return true;
    78  
    79          case GFS2_FORMAT_FS_MIN:
    80                  return type <= GFS2_EATYPE_SECURITY;
    81  
    82          default:
    83                  return false;
    84          }
    85  }
    86  

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/[email protected]

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