BTRFS error (device loop7): failed to run delayed ref for logical 5378048 num_bytes 4096 type 178 action 1 ref_mod 1: -2
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BTRFS: Transaction aborted (error -2)
WARNING: fs/btrfs/extent-tree.c:2247 at btrfs_run_delayed_refs+0x30b/0x3b0 fs/btrfs/extent-tree.c:2247, CPU#0: syz-executor/12528
Modules linked in:
CPU: 0 UID: 0 PID: 12528 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:btrfs_run_delayed_refs+0x30e/0x3b0 fs/btrfs/extent-tree.c:2247
Code: 85 e4 75 07 e8 03 d5 e0 fd eb 7a e8 7c ee c5 fd 84 c0 74 20 e8 f3 d4 e0 fd eb 6a e8 ec d4 e0 fd 48 8d 3d 15 7f 35 0c 44 89 fe <67> 48 0f b9 3a e9 0b ff ff ff e8 83 aa ce 07 41 89 c4 31 ff 89 c6
RSP: 0018:ffffc9000ef2f998 EFLAGS: 00010293
RAX: ffffffff83e5de34 RBX: ffff888054a49be8 RCX: ffff88802f828000
RDX: 0000000000000000 RSI: 00000000fffffffe RDI: ffffffff901b5d50
RBP: 0000000000000000 R08: ffff88802f828000 R09: 0000000000000003
R10: 00000000fffffffb R11: 0000000000000000 R12: ffff8880612e4001
R13: ffff88806d3c9000 R14: dffffc0000000000 R15: 00000000fffffffe
FS:  0000555578b6c500(0000) GS:ffff888125435000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fdcb0d55000 CR3: 0000000078b96000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 btrfs_commit_transaction+0x29a/0x3130 fs/btrfs/transaction.c:2262
 sync_filesystem+0x1cf/0x230 fs/sync.c:66
 generic_shutdown_super+0x77/0x2d0 fs/super.c:625
 kill_anon_super+0x3b/0x70 fs/super.c:1292
 btrfs_kill_super+0x41/0x50 fs/btrfs/super.c:2127
 deactivate_locked_super+0xbc/0x130 fs/super.c:476
 cleanup_mnt+0x437/0x4d0 fs/namespace.c:1312
 task_work_run+0x1d9/0x270 kernel/task_work.c:233
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 __exit_to_user_mode_loop kernel/entry/common.c:67 [inline]
 exit_to_user_mode_loop+0xed/0x480 kernel/entry/common.c:98
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:238 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:269 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:325 [inline]
 do_syscall_64+0x32d/0xf80 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f41fd79d9d7
Code: a2 c7 05 1c fd 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:00007fff0a4f1678 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f41fd832050 RCX: 00007f41fd79d9d7
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fff0a4f1730
RBP: 00007fff0a4f1730 R08: 00007fff0a4f2730 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff0a4f27c0
R13: 00007f41fd832050 R14: 000000000007f7ff R15: 00007fff0a4f2800
 </TASK>
----------------
Code disassembly (best guess):
   0:	85 e4                	test   %esp,%esp
   2:	75 07                	jne    0xb
   4:	e8 03 d5 e0 fd       	call   0xfde0d50c
   9:	eb 7a                	jmp    0x85
   b:	e8 7c ee c5 fd       	call   0xfdc5ee8c
  10:	84 c0                	test   %al,%al
  12:	74 20                	je     0x34
  14:	e8 f3 d4 e0 fd       	call   0xfde0d50c
  19:	eb 6a                	jmp    0x85
  1b:	e8 ec d4 e0 fd       	call   0xfde0d50c
  20:	48 8d 3d 15 7f 35 0c 	lea    0xc357f15(%rip),%rdi        # 0xc357f3c
  27:	44 89 fe             	mov    %r15d,%esi
* 2a:	67 48 0f b9 3a       	ud1    (%edx),%rdi <-- trapping instruction
  2f:	e9 0b ff ff ff       	jmp    0xffffff3f
  34:	e8 83 aa ce 07       	call   0x7ceaabc
  39:	41 89 c4             	mov    %eax,%r12d
  3c:	31 ff                	xor    %edi,%edi
  3e:	89 c6                	mov    %eax,%esi