[kdave-btrfs-devel:ext/aota/zoned-7 132/162] fs/btrfs/zoned.c:42: undefined reference to `__udivdi3'

Tuesday, 15 September 2020

tree:   https://github.com/kdave/btrfs-devel.git ext/aota/zoned-7
head:   17046312f8c0a16a96b4b3a145f4b30be84e6ede
commit: d7a064645672c0cb922ca0bc60c687d22f0c1fa4 [132/162] btrfs: implement log-structured
superblock for ZONED mode
config: i386-randconfig-s002-20200914 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-15) 9.3.0
reproduce:
        # apt-get install sparse
        # sparse version: v0.6.2-191-g10164920-dirty
        git checkout d7a064645672c0cb922ca0bc60c687d22f0c1fa4
        # save the attached .config to linux build tree
        make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=i386 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp(a)intel.com&gt;

All errors (new ones prefixed by >>):

   ld: fs/btrfs/zoned.o: in function `sb_zone_number':
...
> fs/btrfs/zoned.c:42: undefined reference to `__udivdi3'
> ld: fs/btrfs/zoned.c:42: undefined reference to `__udivdi3'
> ld: fs/btrfs/zoned.c:42: undefined reference to `__udivdi3'
> ld: fs/btrfs/zoned.c:42: undefined reference to `__udivdi3'
> ld: fs/btrfs/zoned.c:42: undefined reference to `__udivdi3' 
sparse warnings: (new ones prefixed by >>)

...
> fs/btrfs/zoned.c:429:29: sparse: sparse: restricted __le64
degrades to integer    fs/btrfs/zoned.c:429:52: sparse: sparse: restricted __le64
degrades to integer
   fs/btrfs/zoned.c:61:17: sparse: sparse: incompatible types in comparison expression
(different address spaces):
   fs/btrfs/zoned.c:61:17: sparse:    struct rcu_string [noderef] __rcu *
   fs/btrfs/zoned.c:61:17: sparse:    struct rcu_string *
   fs/btrfs/zoned.c:142:17: sparse: sparse: incompatible types in comparison expression
(different address spaces):
   fs/btrfs/zoned.c:142:17: sparse:    struct rcu_string [noderef] __rcu *
   fs/btrfs/zoned.c:142:17: sparse:    struct rcu_string *
   fs/btrfs/zoned.c:165:25: sparse: sparse: incompatible types in comparison expression
(different address spaces):
   fs/btrfs/zoned.c:165:25: sparse:    struct rcu_string [noderef] __rcu *
   fs/btrfs/zoned.c:165:25: sparse:    struct rcu_string *
   fs/btrfs/zoned.c:175:25: sparse: sparse: incompatible types in comparison expression
(different address spaces):
   fs/btrfs/zoned.c:175:25: sparse:    struct rcu_string [noderef] __rcu *
   fs/btrfs/zoned.c:175:25: sparse:    struct rcu_string *
   fs/btrfs/zoned.c:194:9: sparse: sparse: incompatible types in comparison expression
(different address spaces):
   fs/btrfs/zoned.c:194:9: sparse:    struct rcu_string [noderef] __rcu *
   fs/btrfs/zoned.c:194:9: sparse:    struct rcu_string *

# https://github.com/kdave/btrfs-devel/commit/d7a064645672c0cb922ca0bc60c68...
git remote add kdave-btrfs-devel https://github.com/kdave/btrfs-devel.git
git fetch --no-tags kdave-btrfs-devel ext/aota/zoned-7
git checkout d7a064645672c0cb922ca0bc60c687d22f0c1fa4
vim +42 fs/btrfs/zoned.c

    28	
    29	static int sb_write_pointer(struct block_device *bdev, struct blk_zone *zone,
    30				    u64 *wp_ret);
    31	
    32	static inline u32 sb_zone_number(u64 zone_size, int mirror)
    33	{
    34		ASSERT(mirror < BTRFS_SUPER_MIRROR_MAX);
    35	
    36		switch (mirror) {
    37		case 0:
    38			return 0;
    39		case 1:
    40			return 16;
    41		case 2:
...
 42			return min(btrfs_sb_offset(mirror) / zone_size, 1024ULL); 
   43		default:
    44			BUG();
    45		}
    46	
    47		return 0;
    48	}
    49	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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