------------[ cut here ]------------
WARNING: CPU: 1 PID: 6905 at fs/nilfs2/btree.c:2301 nilfs_btree_assign+0xabb/0xd20 fs/nilfs2/btree.c:2301
Modules linked in:
CPU: 1 UID: 0 PID: 6905 Comm: segctord Not tainted 6.13.0-syzkaller-06077-gab18b8fff124 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
RIP: 0010:nilfs_btree_assign+0xabb/0xd20 fs/nilfs2/btree.c:2301
Code: 00 00 44 89 f0 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc e8 92 30 22 fe 4c 8b 7c 24 38 eb a2 e8 86 30 22 fe 90 <0f> 0b 90 41 be fe ff ff ff eb 91 44 89 f1 80 e1 07 80 c1 03 38 c1
RSP: 0018:ffffc90003c87560 EFLAGS: 00010293
RAX: ffffffff839d175a RBX: ffff88805927bfd8 RCX: ffff8880262a1e00
RDX: 0000000000000000 RSI: 00000000fffffffe RDI: 00000000fffffffe
RBP: ffffc90003c87690 R08: ffffffff839d109b R09: 0000000000000000
R10: ffffc90003c874c0 R11: fffff52000790e9b R12: dffffc0000000000
R13: ffff88807ed6cb00 R14: 00000000fffffffe R15: 1ffff92000790ebc
FS:  0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020029000 CR3: 000000002f298000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 nilfs_bmap_assign+0x8f/0x160 fs/nilfs2/bmap.c:390
 nilfs_segctor_update_payload_blocknr fs/nilfs2/segment.c:1633 [inline]
 nilfs_segctor_assign fs/nilfs2/segment.c:1667 [inline]
 nilfs_segctor_do_construct+0x35c5/0x6ea0 fs/nilfs2/segment.c:2126
 nilfs_segctor_construct+0x181/0x6b0 fs/nilfs2/segment.c:2479
 nilfs_segctor_thread_construct fs/nilfs2/segment.c:2587 [inline]
 nilfs_segctor_thread+0x69e/0xe80 fs/nilfs2/segment.c:2701
 kthread+0x7a9/0x920 kernel/kthread.c:464
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>