BTRFS info (device loop0): force zlib compression, level 3
BTRFS info (device loop0): balance: start -s
------------[ cut here ]------------
BTRFS: Transaction aborted (error -28)
WARNING: fs/btrfs/block-group.c:2790 at 0x0, CPU#0: syz.0.17/5515
Modules linked in:
CPU: 0 UID: 0 PID: 5515 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+0x1149/0x1760 fs/btrfs/block-group.c:2790
Code: 90 c9 fd e9 fe 01 00 00 e8 b4 69 af fd 84 c0 74 23 e8 0b 90 c9 fd e9 eb 01 00 00 e8 01 90 c9 fd 48 8d 3d 4a 3f b3 0b 44 89 f6 <67> 48 0f b9 3a e9 eb fd ff ff e8 98 d7 64 07 41 89 c7 31 ff 89 c6
RSP: 0018:ffffc9000273f6e0 EFLAGS: 00010293
RAX: ffffffff83f8304f RBX: ffff8880333cc001 RCX: ffff8880004f24c0
RDX: 0000000000000000 RSI: 00000000ffffffe4 RDI: ffffffff8fab6fa0
RBP: ffffc9000273f948 R08: ffff8880004f24c0 R09: 0000000000000003
R10: 00000000fffffffb R11: 0000000000000000 R12: 0000000000000000
R13: dffffc0000000000 R14: 00000000ffffffe4 R15: ffff88801fdea800
FS:  000055556f360500(0000) GS:ffff88808d22f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007efe5b32bb60 CR3: 00000000361cd000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 __btrfs_end_transaction+0x140/0x640 fs/btrfs/transaction.c:1078
 btrfs_inc_block_group_ro+0x63e/0x6f0 fs/btrfs/block-group.c:3086
 btrfs_relocate_block_group+0x3f1/0xc70 fs/btrfs/relocation.c:3923
 btrfs_relocate_chunk+0x12f/0x5c0 fs/btrfs/volumes.c:3424
 __btrfs_balance+0x18ff/0x24e0 fs/btrfs/volumes.c:4197
 btrfs_balance+0xac2/0x11b0 fs/btrfs/volumes.c:4571
 btrfs_ioctl_balance+0x3d3/0x610 fs/btrfs/ioctl.c:3525
 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+0xfa/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f9bc3b8f7c9
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:00007ffd6fc46e88 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f9bc3de5fa0 RCX: 00007f9bc3b8f7c9
RDX: 0000200000000c40 RSI: 00000000c4009420 RDI: 0000000000000003
RBP: 00007f9bc3c13f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f9bc3de5fa0 R14: 00007f9bc3de5fa0 R15: 0000000000000003
 </TASK>
----------------
Code disassembly (best guess):
   0:	90                   	nop
   1:	c9                   	leave
   2:	fd                   	std
   3:	e9 fe 01 00 00       	jmp    0x206
   8:	e8 b4 69 af fd       	call   0xfdaf69c1
   d:	84 c0                	test   %al,%al
   f:	74 23                	je     0x34
  11:	e8 0b 90 c9 fd       	call   0xfdc99021
  16:	e9 eb 01 00 00       	jmp    0x206
  1b:	e8 01 90 c9 fd       	call   0xfdc99021
  20:	48 8d 3d 4a 3f b3 0b 	lea    0xbb33f4a(%rip),%rdi        # 0xbb33f71
  27:	44 89 f6             	mov    %r14d,%esi
* 2a:	67 48 0f b9 3a       	ud1    (%edx),%rdi <-- trapping instruction
  2f:	e9 eb fd ff ff       	jmp    0xfffffe1f
  34:	e8 98 d7 64 07       	call   0x764d7d1
  39:	41 89 c7             	mov    %eax,%r15d
  3c:	31 ff                	xor    %edi,%edi
  3e:	89 c6                	mov    %eax,%esi