BTRFS info (device loop0): 1 free space entries at or bigger than 4096 bytes
BTRFS info (device loop0): 3227648 bytes available across all block groups
------------[ cut here ]------------
BTRFS: Transaction aborted (error -28)
WARNING: CPU: 0 PID: 5529 at fs/btrfs/block-group.c:2789 btrfs_create_pending_block_groups+0x1150/0x1780 fs/btrfs/block-group.c:2789
Modules linked in:
CPU: 0 UID: 0 PID: 5529 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:btrfs_create_pending_block_groups+0x1150/0x1780 fs/btrfs/block-group.c:2789
Code: 00 e8 64 1d b9 fd 84 c0 74 29 e8 6b 7b d2 fd e9 fd 01 00 00 e8 61 7b d2 fd 90 48 c7 c7 20 08 d0 8b 44 89 f6 e8 c1 07 96 fd 90 <0f> 0b 90 90 e9 e5 fd ff ff e8 62 7c 8e 07 41 89 c7 31 ff 89 c6 e8
RSP: 0018:ffffc9000cb276e0 EFLAGS: 00010246
RAX: abe0def685a52300 RBX: ffff88804f23c001 RCX: ffff888036b3a440
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000002
RBP: ffffc9000cb27948 R08: ffff88801fc24253 R09: 1ffff11003f8484a
R10: dffffc0000000000 R11: ffffed1003f8484b R12: 0000000000000000
R13: dffffc0000000000 R14: 00000000ffffffe4 R15: ffff888059a7a800
FS:  0000555555db6500(0000) GS:ffff88808d20d000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8d8e43f020 CR3: 0000000040582000 CR4: 0000000000352ef0
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:3085
 btrfs_relocate_block_group+0x3f1/0xc60 fs/btrfs/relocation.c:3950
 btrfs_relocate_chunk+0x12f/0x5c0 fs/btrfs/volumes.c:3446
 __btrfs_balance+0x1860/0x23f0 fs/btrfs/volumes.c:4222
 btrfs_balance+0xac2/0x11b0 fs/btrfs/volumes.c:4599
 btrfs_ioctl_balance+0x3d3/0x610 fs/btrfs/ioctl.c:3577
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:598 [inline]
 __se_sys_ioctl+0xf9/0x170 fs/ioctl.c:584
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f722378ebe9
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:00007ffc4b2cff48 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f72239c5fa0 RCX: 00007f722378ebe9
RDX: 0000200000000500 RSI: 00000000c4009420 RDI: 0000000000000003
RBP: 00007f7223811e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f72239c5fa0 R14: 00007f72239c5fa0 R15: 0000000000000003
 </TASK>