=====================================================
BUG: KMSAN: uninit-value in crc32_body lib/crc32.c:110 [inline]
BUG: KMSAN: uninit-value in crc32_le_generic lib/crc32.c:179 [inline]
BUG: KMSAN: uninit-value in crc32_le_base+0x43c/0xd80 lib/crc32.c:197
 crc32_body lib/crc32.c:110 [inline]
 crc32_le_generic lib/crc32.c:179 [inline]
 crc32_le_base+0x43c/0xd80 lib/crc32.c:197
 nilfs_segbuf_fill_in_segsum_crc fs/nilfs2/segbuf.c:182 [inline]
 nilfs_add_checksums_on_logs+0x2ce/0xe30 fs/nilfs2/segbuf.c:320
 nilfs_segctor_do_construct+0xa553/0xe900 fs/nilfs2/segment.c:2078
 nilfs_segctor_construct+0x1eb/0xe30 fs/nilfs2/segment.c:2381
 nilfs_segctor_thread_construct fs/nilfs2/segment.c:2489 [inline]
 nilfs_segctor_thread+0xc76/0x1240 fs/nilfs2/segment.c:2572
 kthread+0x31f/0x430 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308

Uninit was created at:
 __alloc_pages+0x9f6/0xe90 mm/page_alloc.c:5615
 alloc_pages+0xab0/0xd80 mm/mempolicy.c:2283
 folio_alloc+0x42/0x120 mm/mempolicy.c:2293
 filemap_alloc_folio+0xb2/0x460 mm/filemap.c:976
 __filemap_get_folio+0xe4b/0x1920 mm/filemap.c:1970
 pagecache_get_page+0x4f/0x290 mm/folio-compat.c:99
 find_or_create_page include/linux/pagemap.h:632 [inline]
 grow_dev_page fs/buffer.c:989 [inline]
 grow_buffers fs/buffer.c:1054 [inline]
 __getblk_slow fs/buffer.c:1081 [inline]
 __getblk_gfp+0x375/0x17f0 fs/buffer.c:1376
 sb_getblk include/linux/buffer_head.h:359 [inline]
 nilfs_segbuf_extend_segsum fs/nilfs2/segbuf.c:99 [inline]
 nilfs_segbuf_reset+0x100/0x4f0 fs/nilfs2/segbuf.c:129
 nilfs_segctor_reset_segment_buffer fs/nilfs2/segment.c:421 [inline]
 nilfs_segctor_collect fs/nilfs2/segment.c:1501 [inline]
 nilfs_segctor_do_construct+0x20f7/0xe900 fs/nilfs2/segment.c:2047
 nilfs_segctor_construct+0x1eb/0xe30 fs/nilfs2/segment.c:2381
 nilfs_segctor_thread_construct fs/nilfs2/segment.c:2489 [inline]
 nilfs_segctor_thread+0xc76/0x1240 fs/nilfs2/segment.c:2572
 kthread+0x31f/0x430 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308

CPU: 0 PID: 12437 Comm: segctord Not tainted 6.3.0-rc6-syzkaller-gc478e5b17829 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023
=====================================================