BTRFS info (device loop2): 8318976 bytes available across all block groups
------------[ cut here ]------------
BTRFS: Transaction aborted (error -28)
WARNING: fs/btrfs/volumes.c:3470 at btrfs_remove_chunk+0xe0d/0x15f0, CPU#1: syz.2.1327/15768
Modules linked in:
CPU: 1 UID: 0 PID: 15768 Comm: syz.2.1327 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:btrfs_remove_chunk+0xe10/0x15f0
Code: 22 d0 fd e9 ee 00 00 00 e8 8d 3c b5 fd 84 c0 74 23 e8 c4 22 d0 fd e9 db 00 00 00 e8 ba 22 d0 fd 48 8d 3d d3 fd 24 0c 44 89 ee <67> 48 0f b9 3a e9 02 01 00 00 e8 b1 de b7 07 89 c3 31 ff 89 c6 e8
RSP: 0018:ffffc9000627f940 EFLAGS: 00010287
RAX: ffffffff83f56936 RBX: ffff8881bbb7c001 RCX: 0000000000080000
RDX: ffffc90007931000 RSI: 00000000ffffffe4 RDI: ffffffff901a6710
RBP: ffffc9000627fa90 R08: ffff888167cd3a00 R09: 0000000000000003
R10: 00000000fffffffb R11: 0000000000000002 R12: ffff8881197f9250
R13: ffffffffffffffe4 R14: dffffc0000000000 R15: 0000000000000000
FS:  00007f5a83da26c0(0000) GS:ffff8882a946c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffe3d655488 CR3: 00000001b510e000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 btrfs_relocate_chunk+0x3e7/0x810
 __btrfs_balance+0x1dab/0x2ae0
 btrfs_balance+0xafa/0x11f0
 btrfs_ioctl_balance+0x3d3/0x610
 __se_sys_ioctl+0xfc/0x170
 do_syscall_64+0x14d/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5a82f9c799
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:00007f5a83da2028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f5a83215fa0 RCX: 00007f5a82f9c799
RDX: 0000200000000780 RSI: 00000000c4009420 RDI: 0000000000000004
RBP: 00007f5a83032bd9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f5a83216038 R14: 00007f5a83215fa0 R15: 00007ffd9dcb2718
 </TASK>
