===================================================== 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_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 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_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:1499 [inline] nilfs_segctor_do_construct+0x20f7/0xe900 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: 6132 Comm: segctord Not tainted 6.2.0-syzkaller-81152-g97e36f4aa06f #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023 =====================================================