=====================================================
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+0x467/0xd80 lib/crc32.c:197
 crc32_body lib/crc32.c:112 [inline]
 crc32_le_generic lib/crc32.c:179 [inline]
 crc32_le_base+0x467/0xd80 lib/crc32.c:197
 nilfs_segbuf_fill_in_data_crc fs/nilfs2/segbuf.c:208 [inline]
 nilfs_add_checksums_on_logs+0x62a/0xe30 fs/nilfs2/segbuf.c:321
 nilfs_segctor_do_construct+0xa553/0xe900 fs/nilfs2/segment.c:2076
 nilfs_construct_dsync_segment+0x678/0x770 fs/nilfs2/segment.c:2310
 nilfs_writepages+0x1a8/0x280 fs/nilfs2/inode.c:170
 do_writepages+0x47d/0x920 mm/page-writeback.c:2581
 __writeback_single_inode+0x10d/0x12c0 fs/fs-writeback.c:1598
 writeback_sb_inodes+0xc3f/0x1e80 fs/fs-writeback.c:1889
 wb_writeback+0x51f/0xed0 fs/fs-writeback.c:2063
 wb_do_writeback fs/fs-writeback.c:2206 [inline]
 wb_workfn+0x3d2/0x17b0 fs/fs-writeback.c:2246
 process_one_work+0xb0d/0x1410 kernel/workqueue.c:2289
 worker_thread+0x107b/0x1d60 kernel/workqueue.c:2436
 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:5572
 alloc_pages+0xab0/0xd80 mm/mempolicy.c:2287
 folio_alloc+0x42/0x120 mm/mempolicy.c:2297
 filemap_alloc_folio+0xb2/0x460 mm/filemap.c:972
 __filemap_get_folio+0xe4b/0x1920 mm/filemap.c:1966
 pagecache_get_page+0x4f/0x290 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+0x375/0x17f0 fs/buffer.c:1333
 sb_getblk include/linux/buffer_head.h:356 [inline]
 nilfs_segbuf_extend_payload+0x10c/0x420 fs/nilfs2/segbuf.c:113
 nilfs_segctor_add_super_root fs/nilfs2/segment.c:456 [inline]
 nilfs_segctor_collect_blocks fs/nilfs2/segment.c:1246 [inline]
 nilfs_segctor_collect fs/nilfs2/segment.c:1503 [inline]
 nilfs_segctor_do_construct+0x4eeb/0xe900 fs/nilfs2/segment.c:2045
 nilfs_segctor_construct+0x1eb/0xe30 fs/nilfs2/segment.c:2379
 nilfs_segctor_thread_construct fs/nilfs2/segment.c:2487 [inline]
 nilfs_segctor_thread+0xc76/0x1240 fs/nilfs2/segment.c:2570
 kthread+0x31f/0x430 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308

CPU: 0 PID: 2869 Comm: kworker/u4:6 Not tainted 6.2.0-syzkaller-81152-g97e36f4aa06f #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023
Workqueue: writeback wb_workfn (flush-7:1)
=====================================================