BTRFS info (device loop0): last unmount of filesystem a6a605fc-d5f1-4e66-8595-3726e2b761d6
assertion failed: list_empty(&fs_info->delayed_iputs), in fs/btrfs/disk-io.c:4341
------------[ cut here ]------------
kernel BUG at fs/btrfs/disk-io.c:4341!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI
CPU: 3 PID: 11319 Comm: syz-executor.0 Not tainted 6.9.0-rc4-syzkaller-00266-g977b1ef51866 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:close_ctree+0xda6/0xfd0 fs/btrfs/disk-io.c:4341
Code: e9 7e fb ff ff e8 ea 07 05 fe b9 f5 10 00 00 48 c7 c2 60 24 56 8b 48 c7 c6 40 5f 56 8b 48 c7 c7 e0 24 56 8b e8 8b d7 e5 fd 90 <0f> 0b e8 c3 07 05 fe b9 fe 10 00 00 48 c7 c2 60 24 56 8b 48 c7 c6
RSP: 0018:ffffc9000397fbe0 EFLAGS: 00010286
RAX: 0000000000000051 RBX: ffff8880591dcd38 RCX: ffffffff816f4769
RDX: 0000000000000000 RSI: ffffffff816fd2a6 RDI: 0000000000000005
RBP: ffff8880591dc010 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000080000000 R11: 0000000000000001 R12: 0000000000000000
R13: ffff888056656788 R14: ffff8880591dc000 R15: ffff88801e548040
FS:  0000000000000000(0000) GS:ffff88802c500000(0063) knlGS:00000000565c0400
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 0000564289137908 CR3: 0000000054186000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 generic_shutdown_super+0x159/0x3d0 fs/super.c:641
 kill_anon_super+0x3a/0x60 fs/super.c:1225
 btrfs_kill_super+0x3b/0x50 fs/btrfs/super.c:2091
 deactivate_locked_super+0xbe/0x1a0 fs/super.c:472
 deactivate_super+0xde/0x100 fs/super.c:505
 cleanup_mnt+0x222/0x450 fs/namespace.c:1267
 task_work_run+0x14e/0x250 kernel/task_work.c:180
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x278/0x2a0 kernel/entry/common.c:218
 __do_fast_syscall_32+0x82/0x120 arch/x86/entry/common.c:324
 do_fast_syscall_32+0x32/0x80 arch/x86/entry/common.c:346
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e
RIP: 0023:0xf72d0579
Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00
RSP: 002b:00000000ff9faf48 EFLAGS: 00000292 ORIG_RAX: 0000000000000034
RAX: 0000000000000000 RBX: 00000000ff9faff0 RCX: 0000000000000009
RDX: 00000000f7427ff4 RSI: 00000000f73773bd RDI: 00000000ff9fc094
RBP: 00000000ff9faff0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000292 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:close_ctree+0xda6/0xfd0 fs/btrfs/disk-io.c:4341
Code: e9 7e fb ff ff e8 ea 07 05 fe b9 f5 10 00 00 48 c7 c2 60 24 56 8b 48 c7 c6 40 5f 56 8b 48 c7 c7 e0 24 56 8b e8 8b d7 e5 fd 90 <0f> 0b e8 c3 07 05 fe b9 fe 10 00 00 48 c7 c2 60 24 56 8b 48 c7 c6
RSP: 0018:ffffc9000397fbe0 EFLAGS: 00010286
RAX: 0000000000000051 RBX: ffff8880591dcd38 RCX: ffffffff816f4769
RDX: 0000000000000000 RSI: ffffffff816fd2a6 RDI: 0000000000000005
RBP: ffff8880591dc010 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000080000000 R11: 0000000000000001 R12: 0000000000000000
R13: ffff888056656788 R14: ffff8880591dc000 R15: ffff88801e548040
FS:  0000000000000000(0000) GS:ffff88802c300000(0063) knlGS:00000000565c0400
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 000000005765e000 CR3: 0000000054186000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess), 2 bytes skipped:
   0:	10 06                	adc    %al,(%rsi)
   2:	03 74 b4 01          	add    0x1(%rsp,%rsi,4),%esi
   6:	10 07                	adc    %al,(%rdi)
   8:	03 74 b0 01          	add    0x1(%rax,%rsi,4),%esi
   c:	10 08                	adc    %cl,(%rax)
   e:	03 74 d8 01          	add    0x1(%rax,%rbx,8),%esi
  1e:	00 51 52             	add    %dl,0x52(%rcx)
  21:	55                   	push   %rbp
  22:	89 e5                	mov    %esp,%ebp
  24:	0f 34                	sysenter
  26:	cd 80                	int    $0x80
* 28:	5d                   	pop    %rbp <-- trapping instruction
  29:	5a                   	pop    %rdx
  2a:	59                   	pop    %rcx
  2b:	c3                   	ret
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	90                   	nop
  2f:	90                   	nop
  30:	8d b4 26 00 00 00 00 	lea    0x0(%rsi,%riz,1),%esi
  37:	8d b4 26 00 00 00 00 	lea    0x0(%rsi,%riz,1),%esi