tree: https://github.com/weiny2/linux-kernel.git lm-misc head: 8c385a87dc5cb4d98fa417d3dd9481f3fbe4c625 commit: 963afc15064156e5fb5cc1568d467b3b1d4178cc [2/8] fs: Move swap_[de]activate to file_operations config: x86_64-randconfig-s1-20200415 (attached as .config) compiler: gcc-5 (Ubuntu 5.5.0-12ubuntu1) 5.5.0 20171010 reproduce: git checkout 963afc15064156e5fb5cc1568d467b3b1d4178cc # save the attached .config to linux build tree make ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kbuild test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): .swap_activate = cifs_swap_activate, ^ fs/cifs/file.c:4883:19: error: initialization from incompatible pointer type [-Werror=incompatible-pointer-types] .swap_activate = cifs_swap_activate, ^ fs/cifs/file.c:4883:19: note: (near initialization for 'cifs_addr_ops.is_partially_uptodate') .swap_deactivate = cifs_swap_deactivate, ^ fs/cifs/file.c:4884:21: error: initialization from incompatible pointer type [-Werror=incompatible-pointer-types] .swap_deactivate = cifs_swap_deactivate, ^ fs/cifs/file.c:4884:21: note: (near initialization for 'cifs_addr_ops.is_dirty_writeback') cc1: some warnings being treated as errors vim +/swap_activate +4883 fs/cifs/file.c dca692880e8877 Steve French 2013-11-11 4865 f5e54d6e53a20c Christoph Hellwig 2006-06-28 4866 const struct address_space_operations cifs_addr_ops = { ^1da177e4c3f41 Linus Torvalds 2005-04-16 4867 .readpage = cifs_readpage, ^1da177e4c3f41 Linus Torvalds 2005-04-16 4868 .readpages = cifs_readpages, ^1da177e4c3f41 Linus Torvalds 2005-04-16 4869 .writepage = cifs_writepage, 37c0eb4677f733 Steve French 2005-10-05 4870 .writepages = cifs_writepages, d9414774dc0c7b Nick Piggin 2008-09-24 4871 .write_begin = cifs_write_begin, d9414774dc0c7b Nick Piggin 2008-09-24 4872 .write_end = cifs_write_end, ^1da177e4c3f41 Linus Torvalds 2005-04-16 4873 .set_page_dirty = __set_page_dirty_nobuffers, 85f2d6b44d7e83 Suresh Jayaraman 2010-07-05 4874 .releasepage = cifs_release_page, dca692880e8877 Steve French 2013-11-11 4875 .direct_IO = cifs_direct_io, 85f2d6b44d7e83 Suresh Jayaraman 2010-07-05 4876 .invalidatepage = cifs_invalidate_page, 9ad1506b42c828 Pavel Shilovsky 2011-04-08 4877 .launder_page = cifs_launder_page, 4e8aea30f7751c Steve French 2020-04-09 4878 /* 4e8aea30f7751c Steve French 2020-04-09 4879 * TODO: investigate and if useful we could add an cifs_migratePage 4e8aea30f7751c Steve French 2020-04-09 4880 * helper (under an CONFIG_MIGRATION) in the future, and also 4e8aea30f7751c Steve French 2020-04-09 4881 * investigate and add an is_dirty_writeback helper if needed 4e8aea30f7751c Steve French 2020-04-09 4882 */ 4e8aea30f7751c Steve French 2020-04-09 @4883 .swap_activate = cifs_swap_activate, 4e8aea30f7751c Steve French 2020-04-09 @4884 .swap_deactivate = cifs_swap_deactivate, ^1da177e4c3f41 Linus Torvalds 2005-04-16 4885 }; 273d81d6ada951 Dave Kleikamp 2006-06-01 4886 :::::: The code at line 4883 was first introduced by commit :::::: 4e8aea30f7751ce7c4b158aa0c04e7744d281cc3 smb3: enable swap on SMB3 mounts :::::: TO: Steve French <stfrench(a)microsoft.com&gt; :::::: CC: Steve French <stfrench(a)microsoft.com&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org