BTRFS info (device loop3): relocating block group 1048576 flags system
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BTRFS: Transaction aborted (error -28)
WARNING: CPU: 1 PID: 6254 at fs/btrfs/volumes.c:3360 btrfs_remove_chunk+0x1f6d/0x27d0 fs/btrfs/volumes.c:3360
Modules linked in:
CPU: 1 UID: 0 PID: 6254 Comm: syz-executor.3 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_remove_chunk+0x1f6d/0x27d0 fs/btrfs/volumes.c:3360
Code: 83 f9 19 77 10 b8 01 00 04 02 48 d3 e8 a8 01 0f 85 62 01 00 00 e8 73 41 d7 fd 90 48 c7 c7 a0 fe fb 8b 89 de e8 04 e5 95 fd 90 <0f> 0b 90 90 41 bc 01 00 00 00 e8 54 41 d7 fd 45 89 e0 48 8b 3c 24
RSP: 0018:ffffc90004b378c8 EFLAGS: 00010286
RAX: 0000000000000000 RBX: 00000000ffffffe4 RCX: ffffffff817a3388
RDX: ffff888047970000 RSI: ffffffff817a3395 RDI: 0000000000000001
RBP: ffffffffffffffe4 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000
R13: ffff888046cb4ac8 R14: ffff888047724800 R15: ffff888046cb4ac4
FS:  00007f6e7c5e96c0(0000) GS:ffff8880d67b5000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000560bc37c2300 CR3: 000000004818d000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 btrfs_relocate_chunk+0x2bf/0x730 fs/btrfs/volumes.c:3491
 __btrfs_balance fs/btrfs/volumes.c:4222 [inline]
 btrfs_balance+0x1df9/0x47a0 fs/btrfs/volumes.c:4599
 btrfs_ioctl_balance fs/btrfs/ioctl.c:3577 [inline]
 btrfs_ioctl+0x315d/0x5590 fs/btrfs/ioctl.c:5298
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:598 [inline]
 __se_sys_ioctl fs/ioctl.c:584 [inline]
 __x64_sys_ioctl+0x18b/0x210 fs/ioctl.c:584
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0x4c0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6e7b87de69
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f6e7c5e90c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f6e7b9abf80 RCX: 00007f6e7b87de69
RDX: 0000000020000480 RSI: 00000000c4009420 RDI: 0000000000000004
RBP: 00007f6e7b8ca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f6e7b9abf80 R15: 00007ffdcd7623e8
 </TASK>