------------[ cut here ]------------
BTRFS: Transaction aborted (error -2)
WARNING: fs/btrfs/extent-tree.c:3181 at __btrfs_free_extent+0x3c6e/0x4570, CPU#0: syz-executor/8033
Modules linked in:
CPU: 0 UID: 0 PID: 8033 Comm: syz-executor Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:__btrfs_free_extent+0x3c70/0x4570
Code: e9 c8 05 00 00 e8 80 fb c4 fd 84 c0 0f 84 f2 00 00 00 e8 e3 e8 df fd e9 b1 05 00 00 e8 d9 e8 df fd 48 8d 3d c2 15 35 0c 89 de <67> 48 0f b9 3a e9 c1 e0 ff ff e8 c1 e8 df fd eb 05 e8 ba e8 df fd
RSP: 0018:ffffc900083b7440 EFLAGS: 00010293
RAX: ffffffff83e5c617 RBX: 00000000fffffffe RCX: ffff88816db3ba80
RDX: 0000000000000000 RSI: 00000000fffffffe RDI: ffffffff901adbe0
RBP: ffffc900083b75f0 R08: ffff88816db3ba80 R09: 0000000000000003
R10: 00000000fffffffb R11: 0000000000000000 R12: dffffc0000000000
R13: ffff88811895f4a0 R14: 0000000000000000 R15: ffff8881b9488001
FS:  0000555587a86500(0000) GS:ffff88818de57000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3c419e7158 CR3: 00000001780b0000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 __btrfs_run_delayed_refs+0x1881/0x4780
 btrfs_run_delayed_refs+0xe6/0x3b0
 btrfs_commit_transaction+0xfb6/0x31a0
 sync_filesystem+0x1cf/0x230
 generic_shutdown_super+0x77/0x2d0
 kill_anon_super+0x3b/0x70
 btrfs_kill_super+0x41/0x50
 deactivate_locked_super+0xbc/0x130
 cleanup_mnt+0x437/0x4d0
 task_work_run+0x1d9/0x270
 exit_to_user_mode_loop+0xed/0x480
 do_syscall_64+0x32d/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f140399da57
Code: a2 c7 05 9c fc 24 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007ffd3affbb98 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f1403a32048 RCX: 00007f140399da57
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd3affbc50
RBP: 00007ffd3affbc50 R08: 00007ffd3affcc50 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd3affcce0
R13: 00007f1403a32048 R14: 0000000000028719 R15: 00007ffd3affcd20
 </TASK>
