=====================================================
BUG: KMSAN: uninit-value in crc32_body lib/crc32.c:112 [inline]
BUG: KMSAN: uninit-value in crc32_le_generic lib/crc32.c:179 [inline]
BUG: KMSAN: uninit-value in crc32_le_base+0x5da/0x1300 lib/crc32.c:197
 crc32_body lib/crc32.c:112 [inline]
 crc32_le_generic lib/crc32.c:179 [inline]
 crc32_le_base+0x5da/0x1300 lib/crc32.c:197
 nilfs_segbuf_fill_in_data_crc fs/nilfs2/segbuf.c:208 [inline]
 nilfs_add_checksums_on_logs+0x668/0xdd0 fs/nilfs2/segbuf.c:321
 nilfs_segctor_do_construct+0xb64d/0x10030 fs/nilfs2/segment.c:2076
 nilfs_construct_dsync_segment+0x7d4/0x920 fs/nilfs2/segment.c:2310
 nilfs_sync_file+0x1e0/0x510 fs/nilfs2/file.c:32
 vfs_fsync_range+0x301/0x360 fs/sync.c:188
 generic_write_sync include/linux/fs.h:2885 [inline]
 generic_file_write_iter+0x554/0x600 mm/filemap.c:3936
 do_iter_write+0x101d/0x1800 fs/read_write.c:861
 vfs_iter_write+0x11c/0x180 fs/read_write.c:902
 iter_file_splice_write+0xe6b/0x1bb0 fs/splice.c:686
 do_splice_from fs/splice.c:764 [inline]
 direct_splice_actor+0x1a6/0x250 fs/splice.c:931
 splice_direct_to_actor+0xa30/0x1450 fs/splice.c:886
 do_splice_direct+0x3b6/0x600 fs/splice.c:974
 do_sendfile+0xd39/0x1dd0 fs/read_write.c:1255
 __do_compat_sys_sendfile fs/read_write.c:1344 [inline]
 __se_compat_sys_sendfile+0x3c5/0x490 fs/read_write.c:1327
 __ia32_compat_sys_sendfile+0x11e/0x170 fs/read_write.c:1327
 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline]
 __do_fast_syscall_32+0xa2/0x100 arch/x86/entry/common.c:178
 do_fast_syscall_32+0x37/0x80 arch/x86/entry/common.c:203
 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/common.c:246
 entry_SYSENTER_compat_after_hwframe+0x70/0x82

Uninit was created at:
 __alloc_pages+0x926/0x10a0 mm/page_alloc.c:5572
 alloc_pages+0xb4b/0xec0
 folio_alloc+0x7f/0x180 mm/mempolicy.c:2297
 filemap_alloc_folio+0xf0/0x510 mm/filemap.c:972
 __filemap_get_folio+0xf35/0x1a50 mm/filemap.c:1966
 pagecache_get_page+0xc2/0x310 mm/folio-compat.c:98
 find_or_create_page include/linux/pagemap.h:612 [inline]
 grow_dev_page fs/buffer.c:946 [inline]
 grow_buffers fs/buffer.c:1011 [inline]
 __getblk_slow fs/buffer.c:1038 [inline]
 __getblk_gfp+0x4eb/0x1a70 fs/buffer.c:1333
 sb_getblk include/linux/buffer_head.h:356 [inline]
 nilfs_segbuf_extend_segsum fs/nilfs2/segbuf.c:99 [inline]
 nilfs_segbuf_reset+0x17e/0x740 fs/nilfs2/segbuf.c:129
 nilfs_segctor_reset_segment_buffer fs/nilfs2/segment.c:421 [inline]
 nilfs_segctor_collect fs/nilfs2/segment.c:1499 [inline]
 nilfs_segctor_do_construct+0x2467/0x10030 fs/nilfs2/segment.c:2045
 nilfs_construct_dsync_segment+0x7d4/0x920 fs/nilfs2/segment.c:2310
 nilfs_sync_file+0x1e0/0x510 fs/nilfs2/file.c:32
 vfs_fsync_range+0x301/0x360 fs/sync.c:188
 generic_write_sync include/linux/fs.h:2885 [inline]
 generic_file_write_iter+0x554/0x600 mm/filemap.c:3936
 do_iter_write+0x101d/0x1800 fs/read_write.c:861
 vfs_iter_write+0x11c/0x180 fs/read_write.c:902
 iter_file_splice_write+0xe6b/0x1bb0 fs/splice.c:686
 do_splice_from fs/splice.c:764 [inline]
 direct_splice_actor+0x1a6/0x250 fs/splice.c:931
 splice_direct_to_actor+0xa30/0x1450 fs/splice.c:886
 do_splice_direct+0x3b6/0x600 fs/splice.c:974
 do_sendfile+0xd39/0x1dd0 fs/read_write.c:1255
 __do_compat_sys_sendfile fs/read_write.c:1344 [inline]
 __se_compat_sys_sendfile+0x3c5/0x490 fs/read_write.c:1327
 __ia32_compat_sys_sendfile+0x11e/0x170 fs/read_write.c:1327
 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline]
 __do_fast_syscall_32+0xa2/0x100 arch/x86/entry/common.c:178
 do_fast_syscall_32+0x37/0x80 arch/x86/entry/common.c:203
 do_SYSENTER_32+0x1f/0x30 arch/x86/entry/common.c:246
 entry_SYSENTER_compat_after_hwframe+0x70/0x82

CPU: 1 PID: 5646 Comm: syz-executor.5 Not tainted 6.2.0-rc8-syzkaller-80999-g31b504f219a9 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
=====================================================