[linux-next:master 12614/16121] fs/bcachefs/fs-common.c:349:5: warning: stack frame size (1048) exceeds limit (1024) in 'bch2_rename_trans'

[linux-next:master 12614/16121] fs/bcachefs/fs-common.c:349:5: warning: stack frame size (1048) exceeds limit (1024) in 'bch2_rename_trans'

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   c503e3eec382ac708ee7adf874add37b77c5d312
commit: 1f2d9192502917a190ef9bbf7541960d129d30fe [12614/16121] bcachefs: iter->update_path
config: hexagon-allyesconfig (https://download.01.org/0day-ci/archive/20231031/202310310710.DqPlsmsZ-lkp@intel.com/config)
compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project.git 4a5ac14ee968ff0ad5d2cc1ffa0299048db4c88a)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231031/202310310710.DqPlsmsZ-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202310310710.DqPlsmsZ-lkp@intel.com/

All warnings (new ones prefixed by >>):

   In file included from fs/bcachefs/fs-common.c:3:
   In file included from fs/bcachefs/bcachefs.h:188:
   In file included from include/linux/bio.h:10:
   In file included from include/linux/blk_types.h:10:
   In file included from include/linux/bvec.h:10:
   In file included from include/linux/highmem.h:12:
   In file included from include/linux/hardirq.h:11:
   In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1:
   In file included from include/asm-generic/hardirq.h:17:
   In file included from include/linux/irq.h:20:
   In file included from include/linux/io.h:13:
   In file included from arch/hexagon/include/asm/io.h:337:
   include/asm-generic/io.h:547:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
     547 |         val = __raw_readb(PCI_IOBASE + addr);
         |                           ~~~~~~~~~~ ^
   include/asm-generic/io.h:560:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
     560 |         val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
         |                                                         ~~~~~~~~~~ ^
   include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
      37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
         |                                                   ^
   In file included from fs/bcachefs/fs-common.c:3:
   In file included from fs/bcachefs/bcachefs.h:188:
   In file included from include/linux/bio.h:10:
   In file included from include/linux/blk_types.h:10:
   In file included from include/linux/bvec.h:10:
   In file included from include/linux/highmem.h:12:
   In file included from include/linux/hardirq.h:11:
   In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1:
   In file included from include/asm-generic/hardirq.h:17:
   In file included from include/linux/irq.h:20:
   In file included from include/linux/io.h:13:
   In file included from arch/hexagon/include/asm/io.h:337:
   include/asm-generic/io.h:573:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
     573 |         val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
         |                                                         ~~~~~~~~~~ ^
   include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
      35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
         |                                                   ^
   In file included from fs/bcachefs/fs-common.c:3:
   In file included from fs/bcachefs/bcachefs.h:188:
   In file included from include/linux/bio.h:10:
   In file included from include/linux/blk_types.h:10:
   In file included from include/linux/bvec.h:10:
   In file included from include/linux/highmem.h:12:
   In file included from include/linux/hardirq.h:11:
   In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1:
   In file included from include/asm-generic/hardirq.h:17:
   In file included from include/linux/irq.h:20:
   In file included from include/linux/io.h:13:
   In file included from arch/hexagon/include/asm/io.h:337:
   include/asm-generic/io.h:584:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
     584 |         __raw_writeb(value, PCI_IOBASE + addr);
         |                             ~~~~~~~~~~ ^
   include/asm-generic/io.h:594:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
     594 |         __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
         |                                                       ~~~~~~~~~~ ^
   include/asm-generic/io.h:604:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
     604 |         __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
         |                                                       ~~~~~~~~~~ ^
   In file included from fs/bcachefs/fs-common.c:5:
   In file included from fs/bcachefs/btree_update.h:5:
   fs/bcachefs/btree_iter.h:192:8: warning: duplicate 'inline' declaration specifier [-Wduplicate-decl-specifier]
     192 | static inline int btree_trans_restart(struct btree_trans *trans)
         |        ^
   include/linux/compiler_types.h:215:16: note: expanded from macro 'inline'
     215 | #define inline inline __gnu_inline __inline_maybe_unused notrace
         |                ^
>> fs/bcachefs/fs-common.c:349:5: warning: stack frame size (1048) exceeds limit (1024) in 'bch2_rename_trans' [-Wframe-larger-than]
     349 | int bch2_rename_trans(struct btree_trans *trans,
         |     ^
   8 warnings generated.


vim +/bch2_rename_trans +349 fs/bcachefs/fs-common.c

9638574229e3ae Kent Overstreet 2019-10-02  348  
9638574229e3ae Kent Overstreet 2019-10-02 @349  int bch2_rename_trans(struct btree_trans *trans,

:::::: The code at line 349 was first introduced by commit
:::::: 9638574229e3ae0175a46a63431149746c777b3a bcachefs: Factor out fs-common.c

:::::: TO: Kent Overstreet <kent.overstreet@gmail.com>
:::::: CC: Kent Overstreet <kent.overstreet@linux.dev>

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki