Re: [PATCH 3/4] erofs: reference `struct erofs_device_info` for erofs_map_dev

[kernel test robot <lkp@intel.com>]

Hi Gao,

kernel test robot noticed the following build errors:

[auto build test ERROR on xiang-erofs/dev]
[also build test ERROR on linus/master v6.13-rc2 next-20241213]
[cannot apply to xiang-erofs/dev-test xiang-erofs/fixes]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Gao-Xiang/erofs-use-struct-erofs_device_info-for-the-primary-device/20241213-115709
base:   https://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs.git dev
patch link:    https://lore.kernel.org/r/20241212133504.2047178-3-hsiangkao%40linux.alibaba.com
patch subject: [PATCH 3/4] erofs: reference `struct erofs_device_info` for erofs_map_dev
config: riscv-randconfig-001-20241214 (https://download.01.org/0day-ci/archive/20241214/202412141431.B33KpvxH-lkp@intel.com/config)
compiler: clang version 20.0.0git (https://github.com/llvm/llvm-project 2dc22615fd46ab2566d0f26d5ba234ab12dc4bf8)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241214/202412141431.B33KpvxH-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/202412141431.B33KpvxH-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from include/linux/fs_context.h:14:
   In file included from include/linux/security.h:35:
   In file included from include/linux/bpf.h:31:
   In file included from include/linux/memcontrol.h:13:
   In file included from include/linux/cgroup.h:26:
   In file included from include/linux/kernel_stat.h:8:
   In file included from include/linux/interrupt.h:11:
   In file included from include/linux/hardirq.h:11:
   In file included from ./arch/riscv/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:14:
   In file included from arch/riscv/include/asm/io.h:136:
   include/asm-generic/io.h:760:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
     760 |         insl(addr, buffer, count);
         |         ^~~~~~~~~~~~~~~~~~~~~~~~~
   arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl'
     106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
         |                                          ~~~~~~~~~~ ^
   In file included from fs/erofs/fscache.c:6:
   In file included from include/linux/pseudo_fs.h:4:
   In file included from include/linux/fs_context.h:14:
   In file included from include/linux/security.h:35:
   In file included from include/linux/bpf.h:31:
   In file included from include/linux/memcontrol.h:13:
   In file included from include/linux/cgroup.h:26:
   In file included from include/linux/kernel_stat.h:8:
   In file included from include/linux/interrupt.h:11:
   In file included from include/linux/hardirq.h:11:
   In file included from ./arch/riscv/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:14:
   In file included from arch/riscv/include/asm/io.h:136:
   include/asm-generic/io.h:769:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
     769 |         outsb(addr, buffer, count);
         |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
   arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb'
     118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
         |                                            ~~~~~~~~~~ ^
   In file included from fs/erofs/fscache.c:6:
   In file included from include/linux/pseudo_fs.h:4:
   In file included from include/linux/fs_context.h:14:
   In file included from include/linux/security.h:35:
   In file included from include/linux/bpf.h:31:
   In file included from include/linux/memcontrol.h:13:
   In file included from include/linux/cgroup.h:26:
   In file included from include/linux/kernel_stat.h:8:
   In file included from include/linux/interrupt.h:11:
   In file included from include/linux/hardirq.h:11:
   In file included from ./arch/riscv/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:14:
   In file included from arch/riscv/include/asm/io.h:136:
   include/asm-generic/io.h:778:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
     778 |         outsw(addr, buffer, count);
         |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
   arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw'
     119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
         |                                            ~~~~~~~~~~ ^
   In file included from fs/erofs/fscache.c:6:
   In file included from include/linux/pseudo_fs.h:4:
   In file included from include/linux/fs_context.h:14:
   In file included from include/linux/security.h:35:
   In file included from include/linux/bpf.h:31:
   In file included from include/linux/memcontrol.h:13:
   In file included from include/linux/cgroup.h:26:
   In file included from include/linux/kernel_stat.h:8:
   In file included from include/linux/interrupt.h:11:
   In file included from include/linux/hardirq.h:11:
   In file included from ./arch/riscv/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:14:
   In file included from arch/riscv/include/asm/io.h:136:
   include/asm-generic/io.h:787:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
     787 |         outsl(addr, buffer, count);
         |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
   arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl'
     120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
         |                                            ~~~~~~~~~~ ^
   In file included from fs/erofs/fscache.c:6:
   In file included from include/linux/pseudo_fs.h:4:
   In file included from include/linux/fs_context.h:14:
   In file included from include/linux/security.h:35:
   In file included from include/linux/bpf.h:31:
   In file included from include/linux/memcontrol.h:13:
   In file included from include/linux/cgroup.h:26:
   In file included from include/linux/kernel_stat.h:8:
   In file included from include/linux/interrupt.h:11:
   In file included from include/linux/hardirq.h:11:
   In file included from ./arch/riscv/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:14:
   In file included from arch/riscv/include/asm/io.h:136:
   include/asm-generic/io.h:1115:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
    1115 |         return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port;
         |                                                   ~~~~~~~~~~ ^
>> fs/erofs/fscache.c:201:25: error: no member named 'm_fscache' in 'struct erofs_map_dev'
     201 |         io->io.private = mdev->m_fscache->cookie;
         |                          ~~~~  ^
   fs/erofs/fscache.c:319:41: error: no member named 'm_fscache' in 'struct erofs_map_dev'
     319 |         ret = erofs_fscache_read_io_async(mdev.m_fscache->cookie,
         |                                           ~~~~ ^
   14 warnings and 2 errors generated.


vim +201 fs/erofs/fscache.c

a1bafc3109d713 Jingbo Xu 2024-03-08  194  
a1bafc3109d713 Jingbo Xu 2024-03-08  195  struct bio *erofs_fscache_bio_alloc(struct erofs_map_dev *mdev)
a1bafc3109d713 Jingbo Xu 2024-03-08  196  {
a1bafc3109d713 Jingbo Xu 2024-03-08  197  	struct erofs_fscache_bio *io;
a1bafc3109d713 Jingbo Xu 2024-03-08  198  
a1bafc3109d713 Jingbo Xu 2024-03-08  199  	io = kmalloc(sizeof(*io), GFP_KERNEL | __GFP_NOFAIL);
a1bafc3109d713 Jingbo Xu 2024-03-08  200  	bio_init(&io->bio, NULL, io->bvecs, BIO_MAX_VECS, REQ_OP_READ);
a1bafc3109d713 Jingbo Xu 2024-03-08 @201  	io->io.private = mdev->m_fscache->cookie;
a1bafc3109d713 Jingbo Xu 2024-03-08  202  	io->io.end_io = erofs_fscache_bio_endio;
a1bafc3109d713 Jingbo Xu 2024-03-08  203  	refcount_set(&io->io.ref, 1);
a1bafc3109d713 Jingbo Xu 2024-03-08  204  	return &io->bio;
a1bafc3109d713 Jingbo Xu 2024-03-08  205  }
a1bafc3109d713 Jingbo Xu 2024-03-08  206  

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