BTRFS info (device loop0): block group 6881280 has 1638400 bytes, 0 used 0 pinned 0 reserved 0 delalloc 0 super 0 zone_unusable (1638400 bytes available) 
BTRFS critical (device loop0): entry offset 6881280, bytes 1638400, bitmap no
BTRFS info (device loop0): block group has cluster?: no
BTRFS info (device loop0): 1 free space entries at or bigger than 4096 bytes
BTRFS info (device loop0): 3215360 bytes available across all block groups
------------[ cut here ]------------
BTRFS: Transaction aborted (error -28)
WARNING: CPU: 0 PID: 6508 at fs/btrfs/block-group.c:2781 btrfs_create_pending_block_groups+0x1118/0x1340 fs/btrfs/block-group.c:2781
Modules linked in:
CPU: 0 UID: 0 PID: 6508 Comm: syz.0.16 Not tainted 6.16.0-rc4-syzkaller-00123-g4c06e63b9203 #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:btrfs_create_pending_block_groups+0x1118/0x1340 fs/btrfs/block-group.c:2781
Code: 8b 3f 48 c7 c6 80 bf 6f 8b 44 89 f2 e8 51 a9 41 fd e9 3a fe ff ff e8 e7 f4 d6 fd 48 c7 c7 20 bf 6f 8b 44 89 f6 e8 58 8a 9a fd <0f> 0b e9 1f fe ff ff e8 cc f4 d6 fd eb 05 e8 c5 f4 d6 fd 4c 8b 74
RSP: 0018:ffffc90002ec7700 EFLAGS: 00010246
RAX: cf45f2c85b8a4200 RBX: ffff88805d8bc001 RCX: ffff88807d27da00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000002
RBP: ffffc90002ec7978 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff1b3a610 R12: 0000000000000000
R13: dffffc0000000000 R14: 00000000ffffffe4 R15: ffff88802983c058
FS:  00007f1d44ea66c0(0000) GS:ffff88812664e000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005564c5c25950 CR3: 0000000075e28000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 __btrfs_end_transaction+0x140/0x640 fs/btrfs/transaction.c:1071
 btrfs_inc_block_group_ro+0x641/0x6f0 fs/btrfs/block-group.c:3077
 btrfs_relocate_block_group+0x47a/0xdd0 fs/btrfs/relocation.c:3962
 btrfs_relocate_chunk+0x12a/0x3b0 fs/btrfs/volumes.c:3437
 __btrfs_balance+0x1870/0x21d0 fs/btrfs/volumes.c:4212
 btrfs_balance+0xc94/0x11c0 fs/btrfs/volumes.c:4589
 btrfs_ioctl_balance+0x3d3/0x610 fs/btrfs/ioctl.c:3583
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:907 [inline]
 __se_sys_ioctl+0xf9/0x170 fs/ioctl.c:893
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x8a/0x300 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f1d43f8e929
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:00007f1d44ea6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f1d441b5fa0 RCX: 00007f1d43f8e929
RDX: 0000200000000440 RSI: 00000000c4009420 RDI: 0000000000000003
RBP: 00007f1d44010b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f1d441b5fa0 R15: 00007fff370276a8
 </TASK>