------------[ cut here ]------------
WARNING: CPU: 0 PID: 4565 at fs/nilfs2/btree.c:2284 nilfs_btree_assign+0xa9b/0xd00
Modules linked in:
CPU: 0 PID: 4565 Comm: segctord Not tainted 5.15.110-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023
RIP: 0010:nilfs_btree_assign+0xa9b/0xd00 fs/nilfs2/btree.c:2284
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 41 da 5c fe 4c 8b 7c 24 38 eb a6 e8 35 da 5c 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:ffffc900058df5c0 EFLAGS: 00010293
RAX: ffffffff8323044b RBX: ffff88805b46b358 RCX: ffff88807f31d700
RDX: 0000000000000000 RSI: 00000000fffffffe RDI: 00000000fffffffe
RBP: ffffc900058df6f0 R08: ffffffff8322fda7 R09: ffffed100a9cf0cc
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff8880588c1680 R14: 00000000fffffffe R15: 1ffff92000b1bec8
FS:  0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020777000 CR3: 0000000060d04000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 nilfs_bmap_assign+0x87/0x160 fs/nilfs2/bmap.c:382
 nilfs_segctor_update_payload_blocknr fs/nilfs2/segment.c:1615 [inline]
 nilfs_segctor_assign fs/nilfs2/segment.c:1649 [inline]
 nilfs_segctor_do_construct+0x38d9/0x7150 fs/nilfs2/segment.c:2076
 nilfs_segctor_construct+0x145/0x8c0 fs/nilfs2/segment.c:2401
 nilfs_segctor_thread_construct fs/nilfs2/segment.c:2509 [inline]
 nilfs_segctor_thread+0x512/0x1130 fs/nilfs2/segment.c:2592
 kthread+0x3f6/0x4f0 kernel/kthread.c:319
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
 </TASK>