NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds ===================================================== 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_segctor_construct+0x2e9/0x1080 fs/nilfs2/segment.c:2379 nilfs_segctor_thread_construct fs/nilfs2/segment.c:2487 [inline] nilfs_segctor_thread+0xf31/0x16b0 fs/nilfs2/segment.c:2570 kthread+0x3c7/0x500 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 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_feed_segment fs/nilfs2/segment.c:442 [inline] nilfs_segctor_add_file_block+0x711/0x19c0 fs/nilfs2/segment.c:539 nilfs_collect_file_data+0x148/0x270 fs/nilfs2/segment.c:572 nilfs_segctor_apply_buffers+0x2dc/0x840 fs/nilfs2/segment.c:1018 nilfs_segctor_scan_file+0xe64/0x13b0 fs/nilfs2/segment.c:1067 nilfs_segctor_collect_blocks fs/nilfs2/segment.c:1225 [inline] nilfs_segctor_collect fs/nilfs2/segment.c:1503 [inline] nilfs_segctor_do_construct+0x407b/0x10030 fs/nilfs2/segment.c:2045 nilfs_segctor_construct+0x2e9/0x1080 fs/nilfs2/segment.c:2379 nilfs_segctor_thread_construct fs/nilfs2/segment.c:2487 [inline] nilfs_segctor_thread+0xf31/0x16b0 fs/nilfs2/segment.c:2570 kthread+0x3c7/0x500 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 CPU: 1 PID: 12408 Comm: segctord Not tainted 6.2.0-syzkaller-81151-g224e1375d540 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023 =====================================================