BTRFS info (device loop4): last unmount of filesystem 3dd00f98-d7de-4613-a9de-66d81c147063 assertion failed: list_empty(&fs_info->delayed_iputs), in fs/btrfs/disk-io.c:4330 ------------[ cut here ]------------ kernel BUG at fs/btrfs/disk-io.c:4330! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI CPU: 0 UID: 0 PID: 5957 Comm: syz-executor Not tainted 6.12.0-syzkaller-01892-g8f7c8b88bda4 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024 RIP: 0010:close_ctree+0x92c/0xd60 fs/btrfs/disk-io.c:4330 Code: e9 0b f9 ff ff e8 b4 32 d6 f5 48 c7 c7 80 4b 4c 8c 48 c7 c6 20 7b 4c 8c 48 c7 c2 00 4c 4c 8c b9 ea 10 00 00 e8 15 9d ff ff 90 <0f> 0b e8 8d 32 d6 f5 48 c7 c7 80 4b 4c 8c 48 c7 c6 c0 7b 4c 8c 48 RSP: 0018:ffffc900037efb60 EFLAGS: 00010246 RAX: 0000000000000051 RBX: ffff888033018d38 RCX: 46eabe93dd474a00 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: ffffc900037efd00 R08: ffffffff8174cddc R09: 1ffff920006fdf08 R10: dffffc0000000000 R11: fffff520006fdf09 R12: ffff888033018000 R13: ffff888033018fa0 R14: 1ffff11006603274 R15: 0000000000000000 FS: 0000555589112500(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffc6e0f7aa8 CR3: 0000000035386000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: generic_shutdown_super+0x139/0x2d0 fs/super.c:642 kill_anon_super+0x3b/0x70 fs/super.c:1237 btrfs_kill_super+0x41/0x50 fs/btrfs/super.c:2112 deactivate_locked_super+0xc4/0x130 fs/super.c:473 cleanup_mnt+0x41f/0x4b0 fs/namespace.c:1373 task_work_run+0x24f/0x310 kernel/task_work.c:239 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:329 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x13f/0x340 kernel/entry/common.c:218 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f8b82b7fb47 Code: a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 0f 1f 44 00 00 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 a8 ff ff ff f7 d8 64 89 02 b8 RSP: 002b:00007fff40a0fdc8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f8b82b7fb47 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fff40a0fe80 RBP: 00007fff40a0fe80 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000ffffffff R11: 0000000000000246 R12: 00007fff40a10f00 R13: 00007f8b82bf15fc R14: 0000000000044456 R15: 00007fff40a10f40 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:close_ctree+0x92c/0xd60 fs/btrfs/disk-io.c:4330 Code: e9 0b f9 ff ff e8 b4 32 d6 f5 48 c7 c7 80 4b 4c 8c 48 c7 c6 20 7b 4c 8c 48 c7 c2 00 4c 4c 8c b9 ea 10 00 00 e8 15 9d ff ff 90 <0f> 0b e8 8d 32 d6 f5 48 c7 c7 80 4b 4c 8c 48 c7 c6 c0 7b 4c 8c 48 RSP: 0018:ffffc900037efb60 EFLAGS: 00010246 RAX: 0000000000000051 RBX: ffff888033018d38 RCX: 46eabe93dd474a00 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: ffffc900037efd00 R08: ffffffff8174cddc R09: 1ffff920006fdf08 R10: dffffc0000000000 R11: fffff520006fdf09 R12: ffff888033018000 R13: ffff888033018fa0 R14: 1ffff11006603274 R15: 0000000000000000 FS: 0000555589112500(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055b941f7f668 CR3: 0000000035386000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400