------------[ cut here ]------------ WARNING: CPU: 1 PID: 5138 at fs/nilfs2/dat.c:200 nilfs_dat_commit_end+0x5ac/0x6b0 fs/nilfs2/dat.c:200 Modules linked in: CPU: 1 PID: 5138 Comm: syz.0.217 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 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:ffffc9000325f178 EFLAGS: 00010287 RAX: ffffffff830ec6ac RBX: ffff8880622291a0 RCX: 0000000000080000 RDX: ffffc90004014000 RSI: 000000000001cd2a RDI: 000000000001cd2b RBP: 0000000000000003 R08: ffff88805b8fd48f R09: 1ffff1100b71fa91 R10: dffffc0000000000 R11: ffffed100b71fa92 R12: ffff888026d95308 R13: ffff8880540d29e0 R14: 00000000003f0002 R15: ffff88807a825ab0 FS: 00007fb4f0d266c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00002000000bd038 CR3: 00000000540fc000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: 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:2036 [inline] nilfs_btree_propagate_v fs/nilfs2/btree.c:2066 [inline] nilfs_btree_propagate+0x998/0xcf0 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 call_write_iter include/linux/fs.h:2173 [inline] new_sync_write fs/read_write.c:507 [inline] vfs_write+0x745/0xd60 fs/read_write.c:594 ksys_write+0x152/0x260 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: 0033:0x7fb4f2acc799 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:00007fb4f0d26028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007fb4f2d45fa0 RCX: 00007fb4f2acc799 RDX: 0000000000000020 RSI: 0000200000000300 RDI: 0000000000000004 RBP: 00007fb4f2b62c99 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fb4f2d46038 R14: 00007fb4f2d45fa0 R15: 00007ffc07ac9b18