------------[ cut here ]------------
WARNING: CPU: 0 PID: 10468 at fs/nilfs2/btree.c:2282 nilfs_btree_assign+0xa9f/0xd10
Modules linked in:
CPU: 0 PID: 10468 Comm: segctord Not tainted 6.3.0-rc3-syzkaller-00021-ga1effab7a3a3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
RIP: 0010:nilfs_btree_assign+0xa9f/0xd10 fs/nilfs2/btree.c:2282
Code: 00 0f 85 81 02 00 00 44 89 f0 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 bd 55 41 fe 4c 8b 7c 24 38 eb a6 e8 b1 55 41 fe <0f> 0b 41 be fe ff ff ff eb 97 44 89 f1 80 e1 07 80 c1 03 38 c1 0f
RSP: 0018:ffffc900066a7580 EFLAGS: 00010293
RAX: ffffffff8349176f RBX: ffff88806fb3d360 RCX: ffff88801f769d40
RDX: 0000000000000000 RSI: 00000000fffffffe RDI: 00000000fffffffe
RBP: ffffc900066a76b0 R08: ffffffff834910cb R09: ffffed100dda3aaf
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff888070d22d00 R14: 00000000fffffffe R15: 1ffff92000cd4ec0
FS:  0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555556a1e668 CR3: 000000007f410000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 nilfs_bmap_assign+0x8b/0x160 fs/nilfs2/bmap.c:382
 nilfs_segctor_update_payload_blocknr fs/nilfs2/segment.c:1597 [inline]
 nilfs_segctor_assign fs/nilfs2/segment.c:1631 [inline]
 nilfs_segctor_do_construct+0x3a11/0x6f70 fs/nilfs2/segment.c:2058
 nilfs_segctor_construct+0x145/0x8c0 fs/nilfs2/segment.c:2381
 nilfs_segctor_thread_construct fs/nilfs2/segment.c:2489 [inline]
 nilfs_segctor_thread+0x53a/0x1140 fs/nilfs2/segment.c:2572
 kthread+0x270/0x300 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>