------------[ cut here ]------------
WARNING: CPU: 0 PID: 4266 at fs/nilfs2/dat.c:200 nilfs_dat_commit_end+0x5ac/0x6b0 fs/nilfs2/dat.c:200
Modules linked in:
CPU: 0 PID: 4266 Comm: syz.1.6 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
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 b8 54 03 00 e8 73 5a 6a fe e8 7e b6 f1 fd e9 b8 fc ff ff e8 64 5a 6a fe <0f> 0b e9 16 fc ff ff e8 58 5a 6a fe e8 63 b6 f1 fd e9 74 fe ff ff
RSP: 0018:ffffc9000312eb38 EFLAGS: 00010287
RAX: ffffffff830ec6ac RBX: ffff88801bc261a0 RCX: 0000000000080000
RDX: ffffc90003b83000 RSI: 000000000001d480 RDI: 000000000001d481
RBP: 0000000000000003 R08: ffff8880741f665f R09: 1ffff1100e83eccb
R10: dffffc0000000000 R11: ffffed100e83eccc R12: ffff88801db31788
R13: ffff88805e418980 R14: 0000000009000002 R15: ffff88802abdad30
FS:  00007f5e6549e6c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fae9eeaa000 CR3: 000000005ebea000 CR4: 00000000003506f0
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+0x93/0x410 fs/nilfs2/btree.c:1960
 nilfs_btree_commit_propagate_v fs/nilfs2/btree.c:2033 [inline]
 nilfs_btree_propagate_v fs/nilfs2/btree.c:2066 [inline]
 nilfs_btree_propagate+0x95a/0xcf0 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+0x189a/0x6ca0 fs/nilfs2/segment.c:2090
 nilfs_construct_dsync_segment+0x5f1/0x6f0 fs/nilfs2/segment.c:2375
 do_writepages+0x476/0x6e0 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+0x126/0x3d0 mm/filemap.c:704
 __generic_file_write_iter+0x3af/0x4e0 mm/filemap.c:3898
 generic_file_write_iter+0xa6/0x1b0 mm/filemap.c:3944
 do_iter_readv_writev+0x47e/0x5f0 fs/read_write.c:-1
 do_iter_write+0x205/0x7b0 fs/read_write.c:855
 iter_file_splice_write+0x699/0xcc0 fs/splice.c:689
 do_splice_from fs/splice.c:767 [inline]
 direct_splice_actor+0xe1/0x130 fs/splice.c:956
 splice_direct_to_actor+0x4ea/0xc10 fs/splice.c:902
 do_splice_direct+0x1d4/0x2f0 fs/splice.c:1008
 do_sendfile+0x5fc/0xeb0 fs/read_write.c:1249
 __do_sys_sendfile64 fs/read_write.c:1317 [inline]
 __se_sys_sendfile64+0x141/0x1a0 fs/read_write.c:1303
 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: 0033:0x7f5e67244819
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f5e6549e028 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f5e674bdfa0 RCX: 00007f5e67244819
RDX: 0000000000000000 RSI: 0000000000000007 RDI: 0000000000000007
RBP: 00007f5e672dac91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000800000020 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f5e674be038 R14: 00007f5e674bdfa0 R15: 00007ffd64b2d738
 </TASK>