BTRFS info (device loop5): last unmount of filesystem d552757d-9c39-40e3-95f0-16d819589928 assertion failed: list_empty(&fs_info->delayed_iputs), in fs/btrfs/disk-io.c:4705 ------------[ cut here ]------------ kernel BUG at fs/btrfs/ctree.h:3716! Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP Modules linked in: CPU: 1 PID: 4259 Comm: syz-executor.5 Not tainted 6.1.74-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : assertfail+0x28/0x2c fs/btrfs/ctree.h:3715 lr : assertfail+0x28/0x2c fs/btrfs/ctree.h:3715 sp : ffff80001de776d0 x29: ffff80001de776d0 x28: 1fffe0001b577262 x27: dfff800000000000 x26: ffff700003bceee8 x25: 1fffe0001b5771fa x24: ffff80001de77740 x23: 0000000000000000 x22: ffff0000dabb8fc8 x21: ffff0000dabb8d58 x20: ffff0000dabb8010 x19: ffff0000dabb8000 x18: 0000000000000140 x17: 7274622f7366206e x16: ffff80001214bb4c x15: 0000000000000000 x14: 00000000ffffffff x13: 00000000000019c8 x12: 0000000000000001 x11: 0000000000ff0100 x10: 0000000000000000 x9 : e930b3268246a500 x8 : e930b3268246a500 x7 : 00000000000019c8 x6 : 0000000000001940 x5 : ffff80001de76fd8 x4 : ffff8000158f9518 x3 : ffff80000aa8616c x2 : ffff0001b437fcd0 x1 : 0000000100000000 x0 : 0000000000000051 Call trace: assertfail+0x28/0x2c fs/btrfs/ctree.h:3715 close_ctree+0x6ec/0xad8 fs/btrfs/disk-io.c:4705 btrfs_put_super+0x70/0x80 fs/btrfs/super.c:397 generic_shutdown_super+0x130/0x328 fs/super.c:501 kill_anon_super+0x4c/0x74 fs/super.c:1117 btrfs_kill_super+0x40/0x58 fs/btrfs/super.c:2449 deactivate_locked_super+0xac/0x124 fs/super.c:332 deactivate_super+0xf0/0x110 fs/super.c:363 cleanup_mnt+0x394/0x41c fs/namespace.c:1186 __cleanup_mnt+0x20/0x30 fs/namespace.c:1193 task_work_run+0x240/0x2f0 kernel/task_work.c:179 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] do_notify_resume+0x2148/0x3474 arch/arm64/kernel/signal.c:1132 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline] el0_svc+0x9c/0x168 arch/arm64/kernel/entry-common.c:638 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 Code: 91210000 d0002b22 912d0042 97fff925 (d4210000) ---[ end trace 0000000000000000 ]---