[xiang-erofs:dev-test 2/2] fs/erofs/super.c:876:6: error: assigning to 'int' from incompatible type 'void'

kernel test robot
2024-04-02T09:08:02Z

tree: https://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs.git dev-test
head: 38654ff32711761d45ff138634e559a98003c31c
commit: 38654ff32711761d45ff138634e559a98003c31c [2/2] erofs: rename per-CPU buffers to global buffer pool and make it configurable
config: hexagon-randconfig-001-20240402 (https://download.01.org/0day-ci/archive/20240402/202404021750.7EQaoKAb-lkp@intel.com/config)
compiler: clang version 16.0.4 (https://github.com/llvm/llvm-project.git ae42196bc493ffe877a7e3dff8be32035dea4d07)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240402/202404021750.7EQaoKAb-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/202404021750.7EQaoKAb-lkp@intel.com/

All errors (new ones prefixed by >>):

In file included from fs/erofs/super.c:10:
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:9:
In file included from include/linux/interrupt.h:11:
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:328:
include/asm-generic/io.h:547:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
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]
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'
#define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
^
In file included from fs/erofs/super.c:10:
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:9:
In file included from include/linux/interrupt.h:11:
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:328:
include/asm-generic/io.h:573:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
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'
#define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
^
In file included from fs/erofs/super.c:10:
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:9:
In file included from include/linux/interrupt.h:11:
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:328:
include/asm-generic/io.h:584:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
__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]
__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]
__raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
~~~~~~~~~~ ^
>> fs/erofs/super.c:876:6: error: assigning to 'int' from incompatible type 'void'
err = z_erofs_gbuf_init();
^ ~~~~~~~~~~~~~~~~~~~
6 warnings and 1 error generated.

vim +876 fs/erofs/super.c

850
851 static int __init erofs_module_init(void)
852 {
853 int err;
854
855 erofs_check_ondisk_layout_definitions();
856
857 erofs_inode_cachep = kmem_cache_create("erofs_inode",
858 sizeof(struct erofs_inode), 0,
859 SLAB_RECLAIM_ACCOUNT | SLAB_ACCOUNT,
860 erofs_inode_init_once);
861 if (!erofs_inode_cachep)
862 return -ENOMEM;
863
864 err = erofs_init_shrinker();
865 if (err)
866 goto shrinker_err;
867
868 err = z_erofs_lzma_init();
869 if (err)
870 goto lzma_err;
871
872 err = z_erofs_deflate_init();
873 if (err)
874 goto deflate_err;
875
> 876 err = z_erofs_gbuf_init();
877 if (err)
878 goto gbuf_err;
879
880 err = z_erofs_init_zip_subsystem();
881 if (err)
882 goto zip_err;
883
884 err = erofs_init_sysfs();
885 if (err)
886 goto sysfs_err;
887
888 err = register_filesystem(&erofs_fs_type);
889 if (err)
890 goto fs_err;
891
892 return 0;
893
894 fs_err:
895 erofs_exit_sysfs();
896 sysfs_err:
897 z_erofs_exit_zip_subsystem();
898 zip_err:
899 z_erofs_gbuf_exit();
900 gbuf_err:
901 z_erofs_deflate_exit();
902 deflate_err:
903 z_erofs_lzma_exit();
904 lzma_err:
905 erofs_exit_shrinker();
906 shrinker_err:
907 kmem_cache_destroy(erofs_inode_cachep);
908 return err;
909 }
910

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