NILFS (loop0): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds
------------[ cut here ]------------
WARNING: fs/nilfs2/btree.c:2302 at nilfs_btree_assign+0x983/0xbe0 fs/nilfs2/btree.c:2302, CPU#0: segctord/6649
Modules linked in:
CPU: 0 UID: 0 PID: 6649 Comm: segctord Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:nilfs_btree_assign+0x983/0xbe0 fs/nilfs2/btree.c:2302
Code: 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc e8 0f db 34 fe 49 bf 00 00 00 00 00 fc ff df eb 9a e8 fe da 34 fe 90 <0f> 0b 90 41 be fe ff ff ff 49 bf 00 00 00 00 00 fc ff df e9 7c ff
RSP: 0018:ffffc90003f174e0 EFLAGS: 00010293
RAX: ffffffff838ad182 RBX: 0000000000000000 RCX: ffff88802edc9e40
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90003f17610 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed10044542ba R12: ffff8880419f43e8
R13: ffffc90003f179a0 R14: 00000000fffffffe R15: 0000000000000002
FS:  0000000000000000(0000) GS:ffff888126cef000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f33fb6337b8 CR3: 000000000d3a8000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 nilfs_bmap_assign+0x92/0x170 fs/nilfs2/bmap.c:374
 nilfs_segctor_update_payload_blocknr fs/nilfs2/segment.c:1640 [inline]
 nilfs_segctor_assign fs/nilfs2/segment.c:1674 [inline]
 nilfs_segctor_do_construct+0x33b7/0x6a40 fs/nilfs2/segment.c:2133
 nilfs_segctor_construct+0x17b/0x690 fs/nilfs2/segment.c:2462
 nilfs_segctor_thread_construct fs/nilfs2/segment.c:2570 [inline]
 nilfs_segctor_thread+0x6f7/0xe00 fs/nilfs2/segment.c:2684
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x510/0xa50 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
 </TASK>