BTRFS critical (device loop4): panic in insert_ordered_extent:264: overlapping ordered extents, existing oe file_offset 45056 num_bytes 417792 flags 0x1089, new oe file_offset 45056 num_bytes 417792 flags 0x80 (errno=-17 Object already exists)
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kernel BUG at fs/btrfs/ordered-data.c:264!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 1 UID: 0 PID: 6871 Comm: syz.4.218 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:insert_ordered_extent fs/btrfs/ordered-data.c:261 [inline]
RIP: 0010:btrfs_alloc_ordered_extent+0x943/0xad0 fs/btrfs/ordered-data.c:336
Code: 87 8d ba 08 01 00 00 b9 ef ff ff ff 49 c7 c0 a0 46 b8 8b 4d 89 f9 ff 75 00 41 54 41 55 41 56 53 e8 b2 c2 1c fd 48 83 c4 28 90 <0f> 0b e8 d6 5d b8 fd 48 c7 c7 00 3e b8 8b 48 c7 c6 60 3e b8 8b 48
RSP: 0018:ffffc90010896c10 EFLAGS: 00010292
RAX: 5d129d7f2780ec00 RBX: 0000000000066000 RCX: 1ffff92002112d60
RDX: 0000000000000003 RSI: ffffffff8daf6cd8 RDI: ffff888031930000
RBP: ffff888061469940 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffff52002112cd1 R12: 0000000000066000
R13: 000000000000b000 R14: 0000000000001089 R15: 000000000000b000
FS:  00007f2a801866c0(0000) GS:ffff888125d3e000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f18a1faf28e CR3: 00000000207d4000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 cow_one_range fs/btrfs/inode.c:1241 [inline]
 cow_file_range+0x744/0x12a0 fs/btrfs/inode.c:1403
 btrfs_run_delalloc_range+0x89e/0x1fd0 fs/btrfs/inode.c:2429
 writepage_delalloc+0x104d/0x1ba0 fs/btrfs/extent_io.c:1558
 extent_writepage fs/btrfs/extent_io.c:1930 [inline]
 extent_write_cache_pages fs/btrfs/extent_io.c:2593 [inline]
 btrfs_writepages+0x1667/0x28b0 fs/btrfs/extent_io.c:2725
 do_writepages+0x338/0x560 mm/page-writeback.c:2571
 filemap_writeback mm/filemap.c:387 [inline]
 filemap_fdatawrite_range+0x1f2/0x300 mm/filemap.c:412
 btrfs_fdatawrite_range+0x54/0xf0 fs/btrfs/file.c:3884
 btrfs_direct_write+0x6a0/0xc30 fs/btrfs/direct-io.c:1038
 btrfs_do_write_iter+0x329/0x790 fs/btrfs/file.c:1449
 do_iter_readv_writev+0x624/0x8d0 fs/read_write.c:-1
 vfs_writev+0x34c/0x990 fs/read_write.c:1058
 do_pwritev fs/read_write.c:1154 [inline]
 __do_sys_pwritev2 fs/read_write.c:1212 [inline]
 __se_sys_pwritev2+0x17a/0x2a0 fs/read_write.c:1203
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2a81f2e019
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:00007f2a80186028 EFLAGS: 00000246 ORIG_RAX: 0000000000000148
RAX: ffffffffffffffda RBX: 00007f2a821b5fa0 RCX: 00007f2a81f2e019
RDX: 0000000000000001 RSI: 0000200000000240 RDI: 0000000000000004
RBP: 00007f2a81fc500c R08: 0000000000000000 R09: 0000000000000003
R10: 0000000000007000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f2a821b6038 R14: 00007f2a821b5fa0 R15: 00007ffdedf70338
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:insert_ordered_extent fs/btrfs/ordered-data.c:261 [inline]
RIP: 0010:btrfs_alloc_ordered_extent+0x943/0xad0 fs/btrfs/ordered-data.c:336
Code: 87 8d ba 08 01 00 00 b9 ef ff ff ff 49 c7 c0 a0 46 b8 8b 4d 89 f9 ff 75 00 41 54 41 55 41 56 53 e8 b2 c2 1c fd 48 83 c4 28 90 <0f> 0b e8 d6 5d b8 fd 48 c7 c7 00 3e b8 8b 48 c7 c6 60 3e b8 8b 48
RSP: 0018:ffffc90010896c10 EFLAGS: 00010292
RAX: 5d129d7f2780ec00 RBX: 0000000000066000 RCX: 1ffff92002112d60
RDX: 0000000000000003 RSI: ffffffff8daf6cd8 RDI: ffff888031930000
RBP: ffff888061469940 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffff52002112cd1 R12: 0000000000066000
R13: 000000000000b000 R14: 0000000000001089 R15: 000000000000b000
FS:  00007f2a801866c0(0000) GS:ffff888125d3e000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f18a1faf28e CR3: 00000000207d4000 CR4: 00000000003526f0