------------[ cut here ]------------
WARNING: CPU: 1 PID: 4402 at fs/nilfs2/dat.c:200 nilfs_dat_commit_end+0x5ac/0x6b0 fs/nilfs2/dat.c:200
Modules linked in:
CPU: 1 PID: 4402 Comm: syz.4.28 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:nilfs_dat_commit_end+0x5ac/0x6b0 fs/nilfs2/dat.c:200
Code: 8b 34 24 48 83 c4 28 5b 41 5c 41 5d 41 5e 41 5f 5d e9 a8 4c 03 00 e8 03 d7 6e fe e8 ee 86 f7 fd e9 b8 fc ff ff e8 f4 d6 6e fe <0f> 0b e9 16 fc ff ff e8 e8 d6 6e fe e8 d3 86 f7 fd e9 74 fe ff ff
RSP: 0018:ffffc9000399f178 EFLAGS: 00010287
RAX: ffffffff8308f39c RBX: ffff8880797bc1a0 RCX: 0000000000080000
RDX: ffffc9000dd29000 RSI: 000000000001afec RDI: 000000000001afed
RBP: 0000000000000003 R08: dffffc0000000000 R09: ffffed100bfe29b4
R10: ffffed100bfe29b4 R11: 1ffff1100bfe29b3 R12: ffff88801ade1788
R13: ffff88807a3709e0 R14: 00000000003f0002 R15: ffff888060d7a630
FS:  00007f90378eb6c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9cb807fcf0 CR3: 000000005b7fa000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 nilfs_dat_commit_update+0x24/0x40 fs/nilfs2/dat.c:250
 nilfs_btree_commit_update_v+0x93/0x400 fs/nilfs2/btree.c:1960
 nilfs_btree_commit_propagate_v fs/nilfs2/btree.c:2036 [inline]
 nilfs_btree_propagate_v fs/nilfs2/btree.c:2066 [inline]
 nilfs_btree_propagate+0x9af/0xd40 fs/nilfs2/btree.c:2110
 nilfs_bmap_propagate+0x70/0x120 fs/nilfs2/bmap.c:345
 nilfs_collect_file_data+0x4b/0xc0 fs/nilfs2/segment.c:587
 nilfs_segctor_apply_buffers+0x15d/0x320 fs/nilfs2/segment.c:1049
 nilfs_segctor_scan_file_dsync fs/nilfs2/segment.c:1138 [inline]
 nilfs_segctor_collect_blocks fs/nilfs2/segment.c:1292 [inline]
 nilfs_segctor_collect fs/nilfs2/segment.c:1534 [inline]
 nilfs_segctor_do_construct+0x1882/0x6be0 fs/nilfs2/segment.c:2090
 nilfs_construct_dsync_segment+0x5df/0x6e0 fs/nilfs2/segment.c:2375
 do_writepages+0x48d/0x6d0 mm/page-writeback.c:2386
 filemap_fdatawrite_wbc+0x1eb/0x240 mm/filemap.c:400
 __filemap_fdatawrite_range mm/filemap.c:433 [inline]
 filemap_write_and_wait_range+0xfa/0x380 mm/filemap.c:704
 __generic_file_write_iter+0x3af/0x4e0 mm/filemap.c:3898
 generic_file_write_iter+0xa6/0x1b0 mm/filemap.c:3944
 call_write_iter include/linux/fs.h:2172 [inline]
 new_sync_write fs/read_write.c:507 [inline]
 vfs_write+0x712/0xd00 fs/read_write.c:594
 ksys_write+0x14d/0x250 fs/read_write.c:647
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f9039683fc9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f90378eb038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f90398dafa0 RCX: 00007f9039683fc9
RDX: 0000000000000010 RSI: 0000200000000480 RDI: 0000000000000004
RBP: 00007f9039706f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f90398db038 R14: 00007f90398dafa0 R15: 00007ffc8b763f98
 </TASK>