BTRFS info (device loop1): last unmount of filesystem a6a605fc-d5f1-4e66-8595-3726e2b761d6 assertion failed: list_empty(&fs_info->delayed_iputs), in fs/btrfs/disk-io.c:4332 ------------[ cut here ]------------ kernel BUG at fs/btrfs/disk-io.c:4332! Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP Modules linked in: CPU: 0 UID: 0 PID: 6419 Comm: syz-executor Not tainted 6.12.0-rc7-syzkaller-g887407160d72 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : close_ctree+0x7e8/0xb3c fs/btrfs/disk-io.c:4332 lr : close_ctree+0x7e8/0xb3c fs/btrfs/disk-io.c:4332 sp : ffff8000acd679c0 x29: ffff8000acd67b20 x28: 1fffe0001a9b2272 x27: dfff800000000000 x26: ffff7000159acf44 x25: ffff8000acd67a20 x24: 1fffe0001a9b21f4 x23: 0000000000000000 x22: ffff0000d4d90f98 x21: ffff0000d4d90d38 x20: ffff0000d4d90010 x19: ffff0000d4d90000 x18: 0000000000000008 x17: 7274622f7366206e x16: ffff8000830ce3b0 x15: 0000000000000001 x14: 1fffe000366c6ce2 x13: 0000000000000000 x12: 0000000000000000 x11: 0000000000000001 x10: 0000000000ff0100 x9 : a31f40f454d6bc00 x8 : a31f40f454d6bc00 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff8000acd67118 x4 : ffff80008f8fd220 x3 : ffff800080626cb0 x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000051 Call trace: close_ctree+0x7e8/0xb3c fs/btrfs/disk-io.c:4332 (P) close_ctree+0x7e8/0xb3c fs/btrfs/disk-io.c:4332 (L) btrfs_put_super+0x70/0x80 fs/btrfs/super.c:75 generic_shutdown_super+0x12c/0x2bc fs/super.c:642 kill_anon_super+0x4c/0x7c fs/super.c:1237 btrfs_kill_super+0x40/0x58 fs/btrfs/super.c:2114 deactivate_locked_super+0xc4/0x12c fs/super.c:473 deactivate_super+0xe0/0x100 fs/super.c:506 cleanup_mnt+0x34c/0x3dc fs/namespace.c:1373 __cleanup_mnt+0x20/0x30 fs/namespace.c:1380 task_work_run+0x230/0x2e0 kernel/task_work.c:239 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:745 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 Code: b0002d42 910e0042 52821d83 97ffeb77 (d4210000) ---[ end trace 0000000000000000 ]---