BTRFS info (device loop1): last unmount of filesystem d552757d-9c39-40e3-95f0-16d819589928 assertion failed: list_empty(&fs_info->delayed_iputs), in fs/btrfs/disk-io.c:4338 ------------[ cut here ]------------ kernel BUG at fs/btrfs/disk-io.c:4338! Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP Modules linked in: CPU: 1 PID: 6183 Comm: syz-executor.1 Not tainted 6.8.0-rc7-syzkaller-g707081b61156 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : close_ctree+0x7c0/0xdec fs/btrfs/disk-io.c:4338 lr : close_ctree+0x7c0/0xdec fs/btrfs/disk-io.c:4338 sp : ffff800097a179c0 x29: ffff800097a17b20 x28: dfff800000000000 x27: 1fffe0001f65b25c x26: ffff700012f42f44 x25: 1fffe0001f65b1f4 x24: ffff800097a17a20 x23: 0000000000000000 x22: ffff0000fb2d8f98 x21: ffff0000fb2d8d38 x20: ffff0000fb2d8010 x19: ffff0000fb2d8000 x18: 1fffe00036804396 x17: ffff80008ec9d000 x16: ffff80008ad6b09c x15: 0000000000000001 x14: 1ffff00012f42e90 x13: 0000000000000000 x12: 0000000000000000 x11: 0000000000000001 x10: 0000000000ff0100 x9 : b9b77ec5aaa62700 x8 : b9b77ec5aaa62700 x7 : ffff800080297c0c x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000001 x3 : ffff800082f248d0 x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000051 Call trace: close_ctree+0x7c0/0xdec fs/btrfs/disk-io.c:4338 btrfs_put_super+0x70/0x80 fs/btrfs/super.c:75 generic_shutdown_super+0x128/0x2b8 fs/super.c:641 kill_anon_super+0x4c/0x7c fs/super.c:1225 btrfs_kill_super+0x40/0x58 fs/btrfs/super.c:2093 deactivate_locked_super+0xc4/0x12c fs/super.c:472 deactivate_super+0xe0/0x100 fs/super.c:505 cleanup_mnt+0x34c/0x3dc fs/namespace.c:1267 __cleanup_mnt+0x20/0x30 fs/namespace.c:1274 task_work_run+0x230/0x2e0 kernel/task_work.c:180 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] do_notify_resume+0x178/0x1f4 arch/arm64/kernel/entry-common.c:151 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:169 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:178 [inline] el0_svc+0xac/0x168 arch/arm64/kernel/entry-common.c:713 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 Code: d0002d02 91100042 52821e43 97ffeb00 (d4210000) ---[ end trace 0000000000000000 ]---