loop0: detected capacity change from 0 to 32768
BTRFS: device fsid e417788f-7a09-42b2-9266-8ddc5d5d35d2 devid 1 transid 8 /dev/loop0 (7:0) scanned by syz.0.0 (5322)
BTRFS info (device loop0): first mount of filesystem e417788f-7a09-42b2-9266-8ddc5d5d35d2
BTRFS info (device loop0): using xxhash64 (xxhash64-generic) checksum algorithm
BTRFS warning (device loop0): space cache v1 is being deprecated and will be removed in a future release, please use -o space_cache=v2
BTRFS info (device loop0): rebuilding free space tree
BTRFS info (device loop0): disabling free space tree
BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
BTRFS info (device loop0): setting nodatasum
BTRFS info (device loop0): allowing degraded mounts
BTRFS info (device loop0): enabling ssd optimizations
BTRFS info (device loop0): using spread ssd allocation scheme
BTRFS info (device loop0): turning on async discard
BTRFS info (device loop0): enabling disk space caching
BTRFS info (device loop0): force clearing of disk cache
BTRFS info (device loop0): force zlib compression, level 3
BTRFS info (device loop0): balance: start -sdrange=7..526336,vrange=6..18446744073709551613,limit=9223372036854775809,limit=1..2147483648
------------[ cut here ]------------
BTRFS: Transaction aborted (error -28)
WARNING: fs/btrfs/block-group.c:2790 at btrfs_create_pending_block_groups+0x1270/0x1870 fs/btrfs/block-group.c:2790, CPU#0: syz.0.0/5322
Modules linked in:
CPU: 0 UID: 0 PID: 5322 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:btrfs_create_pending_block_groups+0x1273/0x1870 fs/btrfs/block-group.c:2790
Code: 65 bd fd e9 f8 01 00 00 e8 ea 88 a2 fd 84 c0 74 23 e8 31 65 bd fd e9 e5 01 00 00 e8 27 65 bd fd 48 8d 3d f0 9b f1 0b 44 89 f6 <67> 48 0f b9 3a e9 d3 fd ff ff e8 ae d2 91 07 41 89 c7 31 ff 89 c6
RSP: 0018:ffffc9000df176e0 EFLAGS: 00010293
RAX: ffffffff840721c9 RBX: ffff8880429e0001 RCX: ffff88801efa8000
RDX: 0000000000000000 RSI: 00000000ffffffe4 RDI: ffffffff8ff8bdc0
RBP: ffffc9000df17948 R08: ffff88801efa8000 R09: 0000000000000003
R10: 00000000fffffffb R11: 0000000000000000 R12: 0000000000000000
R13: fffff52001be2ef8 R14: 00000000ffffffe4 R15: ffff888035c81000
FS:  00007f1a77fb96c0(0000) GS:ffff88808ccea000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000556330b1e348 CR3: 0000000032c56000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 __btrfs_end_transaction+0x140/0x640 fs/btrfs/transaction.c:1079
 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:3426
 __btrfs_balance+0x1921/0x2520 fs/btrfs/volumes.c:4199
 btrfs_balance+0xac2/0x11b0 fs/btrfs/volumes.c:4573
 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+0xe2/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f1a7719acb9
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:00007f1a77fb9028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f1a77415fa0 RCX: 00007f1a7719acb9
RDX: 0000200000000440 RSI: 00000000c4009420 RDI: 0000000000000003
RBP: 00007f1a77208bf7 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f1a77416038 R14: 00007f1a77415fa0 R15: 00007ffda0786da8
 </TASK>
----------------
Code disassembly (best guess):
   0:	65 bd fd e9 f8 01    	gs mov $0x1f8e9fd,%ebp
   6:	00 00                	add    %al,(%rax)
   8:	e8 ea 88 a2 fd       	call   0xfda288f7
   d:	84 c0                	test   %al,%al
   f:	74 23                	je     0x34
  11:	e8 31 65 bd fd       	call   0xfdbd6547
  16:	e9 e5 01 00 00       	jmp    0x200
  1b:	e8 27 65 bd fd       	call   0xfdbd6547
  20:	48 8d 3d f0 9b f1 0b 	lea    0xbf19bf0(%rip),%rdi        # 0xbf19c17
  27:	44 89 f6             	mov    %r14d,%esi
* 2a:	67 48 0f b9 3a       	ud1    (%edx),%rdi <-- trapping instruction
  2f:	e9 d3 fd ff ff       	jmp    0xfffffe07
  34:	e8 ae d2 91 07       	call   0x791d2e7
  39:	41 89 c7             	mov    %eax,%r15d
  3c:	31 ff                	xor    %edi,%edi
  3e:	89 c6                	mov    %eax,%esi