BTRFS info (device loop0): balance: start -d -m
BTRFS info (device loop0): relocating block group 6881280 flags data|metadata
BTRFS info (device loop0): relocating block group 5242880 flags data|metadata
BTRFS warning (device loop0): Skipping commit of aborted transaction.
------------[ cut here ]------------
BTRFS: Transaction aborted (error -28)
WARNING: fs/btrfs/transaction.c:2067 at cleanup_transaction+0x800/0x9d0 fs/btrfs/transaction.c:2067, CPU#0: syz.0.0/5331
Modules linked in:
CPU: 0 UID: 0 PID: 5331 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:cleanup_transaction+0x803/0x9d0 fs/btrfs/transaction.c:2067
Code: 0a e8 41 bf d5 fd e9 87 00 00 00 e8 17 c6 ba fd 84 c0 74 2f e8 2e bf d5 fd eb 77 e8 27 bf d5 fd 48 8d 3d 80 79 49 0c 44 89 e6 <67> 48 0f b9 3a 49 bf 00 00 00 00 00 fc ff df 4c 8b 6c 24 18 e9 8d
RSP: 0018:ffffc9000f917400 EFLAGS: 00010283
RAX: ffffffff83f00819 RBX: ffff888000b21000 RCX: 0000000000100000
RDX: ffffc90020001000 RSI: 00000000ffffffe4 RDI: ffffffff903981a0
RBP: ffffc9000f917530 R08: ffff888000a58000 R09: 0000000000000003
R10: 00000000fffffffb R11: 0000000000000002 R12: 00000000ffffffe4
R13: ffff88801f05ad98 R14: 0000000000000000 R15: 1ffff11003e0b5b3
FS:  00007fa9760666c0(0000) GS:ffff88808c893000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1bf209ba37 CR3: 0000000011cd2000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 btrfs_commit_transaction+0x2594/0x2fc0 fs/btrfs/transaction.c:2659
 prepare_to_relocate+0x39f/0x490 fs/btrfs/relocation.c:3476
 relocate_block_group+0x149/0xe70 fs/btrfs/relocation.c:3501
 do_nonremap_reloc+0xa8/0x5b0 fs/btrfs/relocation.c:5268
 btrfs_relocate_block_group+0x7e6/0xc40 fs/btrfs/relocation.c:5434
 btrfs_relocate_chunk+0x115/0x820 fs/btrfs/volumes.c:3598
 __btrfs_balance+0x1db0/0x2ae0 fs/btrfs/volumes.c:4509
 btrfs_balance+0xaf3/0x11b0 fs/btrfs/volumes.c:4896
 btrfs_ioctl_balance+0x3d3/0x610 fs/btrfs/ioctl.c:3453
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:597 [inline]
 __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:583
 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: 0033:0x7fa97519ce59
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:00007fa976065fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fa975416090 RCX: 00007fa97519ce59
RDX: 0000200000000180 RSI: 00000000c4009420 RDI: 0000000000000004
RBP: 00007fa975232d6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fa975416128 R14: 00007fa975416090 R15: 00007ffd47543478
 </TASK>
----------------
Code disassembly (best guess), 1 bytes skipped:
   0:	e8 41 bf d5 fd       	call   0xfdd5bf46
   5:	e9 87 00 00 00       	jmp    0x91
   a:	e8 17 c6 ba fd       	call   0xfdbac626
   f:	84 c0                	test   %al,%al
  11:	74 2f                	je     0x42
  13:	e8 2e bf d5 fd       	call   0xfdd5bf46
  18:	eb 77                	jmp    0x91
  1a:	e8 27 bf d5 fd       	call   0xfdd5bf46
  1f:	48 8d 3d 80 79 49 0c 	lea    0xc497980(%rip),%rdi        # 0xc4979a6
  26:	44 89 e6             	mov    %r12d,%esi
* 29:	67 48 0f b9 3a       	ud1    (%edx),%rdi <-- trapping instruction
  2e:	49 bf 00 00 00 00 00 	movabs $0xdffffc0000000000,%r15
  35:	fc ff df
  38:	4c 8b 6c 24 18       	mov    0x18(%rsp),%r13
  3d:	e9                   	.byte 0xe9
  3e:	8d                   	.byte 0x8d