loop0: detected capacity change from 0 to 256
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loop0: detected capacity change from 0 to 32768
BTRFS: device fsid 395ef67a-297e-477c-816d-cd80a5b93e5d devid 1 transid 8 /dev/loop0 (7:0) scanned by syz.0.0 (5317)
BTRFS info (device loop0): first mount of filesystem 395ef67a-297e-477c-816d-cd80a5b93e5d
BTRFS info (device loop0): using sha256 checksum algorithm
BTRFS info (device loop0): enabling ssd optimizations
BTRFS info (device loop0): turning on async discard
BTRFS info (device loop0): enabling free space tree
BTRFS info (device loop0): setting incompat feature flag for SIMPLE_QUOTA (0x10000)
BTRFS warning (device loop0): to be deleted qgroup 0/5 has non-zero numbers, data 0 meta prealloc 32768 meta pertrans 16384
------------[ cut here ]------------
BTRFS: Transaction aborted (error -2)
WARNING: fs/btrfs/extent-tree.c:3181 at do_free_extent_accounting fs/btrfs/extent-tree.c:3181 [inline], CPU#0: syz.0.0/5317
WARNING: fs/btrfs/extent-tree.c:3181 at __btrfs_free_extent+0x3c6e/0x4570 fs/btrfs/extent-tree.c:3554, CPU#0: syz.0.0/5317
Modules linked in:
CPU: 0 UID: 0 PID: 5317 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:do_free_extent_accounting fs/btrfs/extent-tree.c:3181 [inline]
RIP: 0010:__btrfs_free_extent+0x3c70/0x4570 fs/btrfs/extent-tree.c:3554
Code: e9 c8 05 00 00 e8 60 fe c3 fd 84 c0 0f 84 f2 00 00 00 e8 c3 cc de fd e9 b1 05 00 00 e8 b9 cc de fd 48 8d 3d 12 8d 34 0c 89 de <67> 48 0f b9 3a e9 c1 e0 ff ff e8 a1 cc de fd eb 05 e8 9a cc de fd
RSP: 0018:ffffc9000de6f400 EFLAGS: 00010287
RAX: ffffffff83e69f67 RBX: 00000000fffffffe RCX: 0000000000100000
RDX: ffffc9000ef3a000 RSI: 00000000fffffffe RDI: ffffffff901b2c80
RBP: ffffc9000de6f5b0 R08: ffff88804095a500 R09: 0000000000000003
R10: 00000000fffffffb R11: 0000000000000002 R12: dffffc0000000000
R13: ffff8880473ec178 R14: 0000000000000000 R15: ffff888034a48001
FS:  00007f0fc22dd6c0(0000) GS:ffff88808ca4f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000562f948b6b80 CR3: 0000000011882000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 run_delayed_tree_ref fs/btrfs/extent-tree.c:1824 [inline]
 run_one_delayed_ref fs/btrfs/extent-tree.c:1851 [inline]
 btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:2058 [inline]
 __btrfs_run_delayed_refs+0x1870/0x4710 fs/btrfs/extent-tree.c:2133
 btrfs_run_delayed_refs+0xe6/0x3b0 fs/btrfs/extent-tree.c:2245
 btrfs_commit_transaction+0xfb9/0x30e0 fs/btrfs/transaction.c:2481
 btrfs_ioctl_set_fslabel+0x375/0x4f0 fs/btrfs/ioctl.c:4080
 btrfs_ioctl+0x9f2/0xd00 fs/btrfs/ioctl.c:5156
 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+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0fc139c819
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:00007f0fc22dcfe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f0fc1615fa0 RCX: 00007f0fc139c819
RDX: 00002000000001c0 RSI: 0000000041009432 RDI: 0000000000000005
RBP: 00007f0fc1432c91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f0fc1616038 R14: 00007f0fc1615fa0 R15: 00007fffba79ec48
 </TASK>
----------------
Code disassembly (best guess):
   0:	e9 c8 05 00 00       	jmp    0x5cd
   5:	e8 60 fe c3 fd       	call   0xfdc3fe6a
   a:	84 c0                	test   %al,%al
   c:	0f 84 f2 00 00 00    	je     0x104
  12:	e8 c3 cc de fd       	call   0xfddeccda
  17:	e9 b1 05 00 00       	jmp    0x5cd
  1c:	e8 b9 cc de fd       	call   0xfddeccda
  21:	48 8d 3d 12 8d 34 0c 	lea    0xc348d12(%rip),%rdi        # 0xc348d3a
  28:	89 de                	mov    %ebx,%esi
* 2a:	67 48 0f b9 3a       	ud1    (%edx),%rdi <-- trapping instruction
  2f:	e9 c1 e0 ff ff       	jmp    0xffffe0f5
  34:	e8 a1 cc de fd       	call   0xfddeccda
  39:	eb 05                	jmp    0x40
  3b:	e8 9a cc de fd       	call   0xfddeccda