BTRFS info (device loop9): last unmount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf 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! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI CPU: 1 UID: 0 PID: 9878 Comm: syz-executor Not tainted 6.12.0-rc6-syzkaller-00279-gde2f378f2b77 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024 RIP: 0010:close_ctree+0x91f/0xd60 fs/btrfs/disk-io.c:4332 Code: e9 18 f9 ff ff e8 71 1f d0 f5 48 c7 c7 c0 4b 4c 8c 48 c7 c6 60 7b 4c 8c 48 c7 c2 40 4c 4c 8c b9 ec 10 00 00 e8 02 9d ff ff 90 <0f> 0b e8 4a 1f d0 f5 48 c7 c7 c0 4b 4c 8c 48 c7 c6 00 7c 4c 8c 48 RSP: 0018:ffffc9000aeb7b60 EFLAGS: 00010246 RAX: 0000000000000051 RBX: ffff888056028d38 RCX: e01b2f2be768bd00 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: ffffc9000aeb7d00 R08: ffffffff8174a18c R09: 1ffff920015d6f08 R10: dffffc0000000000 R11: fffff520015d6f09 R12: ffff888056028000 R13: ffff888056028fa0 R14: 1ffff1100ac05272 R15: 0000000000000000 FS: 0000555576e45500(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055557df1f608 CR3: 000000005d462000 CR4: 0000000000350ef0 Call Trace: generic_shutdown_super+0x13b/0x2d0 fs/super.c:642 kill_anon_super+0x3b/0x70 fs/super.c:1237 btrfs_kill_super+0x41/0x50 fs/btrfs/super.c:2114 deactivate_locked_super+0xc6/0x130 fs/super.c:473 cleanup_mnt+0x41f/0x4b0 fs/namespace.c:1373 task_work_run+0x251/0x310 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:328 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x168/0x370 kernel/entry/common.c:218 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7ff8b957fa47 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:00007ffdc77f1ea8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007ff8b957fa47 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffdc77f1f60 RBP: 00007ffdc77f1f60 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffdc77f2fe0 R13: 00007ff8b95f123c R14: 00000000000a3e9c R15: 00007ffdc77f3020 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:close_ctree+0x91f/0xd60 fs/btrfs/disk-io.c:4332 Code: e9 18 f9 ff ff e8 71 1f d0 f5 48 c7 c7 c0 4b 4c 8c 48 c7 c6 60 7b 4c 8c 48 c7 c2 40 4c 4c 8c b9 ec 10 00 00 e8 02 9d ff ff 90 <0f> 0b e8 4a 1f d0 f5 48 c7 c7 c0 4b 4c 8c 48 c7 c6 00 7c 4c 8c 48 RSP: 0018:ffffc9000aeb7b60 EFLAGS: 00010246 RAX: 0000000000000051 RBX: ffff888056028d38 RCX: e01b2f2be768bd00 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: ffffc9000aeb7d00 R08: ffffffff8174a18c R09: 1ffff920015d6f08 R10: dffffc0000000000 R11: fffff520015d6f09 R12: ffff888056028000 R13: ffff888056028fa0 R14: 1ffff1100ac05272 R15: 0000000000000000 FS: 0000555576e45500(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa770f09178 CR3: 000000005d462000 CR4: 0000000000350ef0