BTRFS info (device loop2): last unmount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf assertion failed: list_empty(&fs_info->delayed_iputs), in fs/btrfs/disk-io.c:4335 ------------[ cut here ]------------ kernel BUG at fs/btrfs/disk-io.c:4335! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI CPU: 1 PID: 5223 Comm: syz-executor.2 Not tainted 6.10.0-rc4-syzkaller-00148-g50736169ecc8 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 RIP: 0010:close_ctree+0xd72/0xf90 fs/btrfs/disk-io.c:4335 Code: e9 ce f6 ff ff e8 0e 45 00 fe b9 ef 10 00 00 48 c7 c2 80 b5 76 8b 48 c7 c6 a0 ef 76 8b 48 c7 c7 00 b6 76 8b e8 9f b3 e0 fd 90 <0f> 0b e8 e7 44 00 fe b9 f8 10 00 00 48 c7 c2 80 b5 76 8b 48 c7 c6 RSP: 0018:ffffc90003447bf0 EFLAGS: 00010282 RAX: 0000000000000051 RBX: ffff88802eec8d38 RCX: ffffffff816e69b9 RDX: 0000000000000000 RSI: ffffffff816ef706 RDI: 0000000000000005 RBP: ffff88802eec8010 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000080000000 R11: 0000000000000001 R12: 0000000000000000 R13: ffff888045796780 R14: ffff88802eec8000 R15: ffff8880476eb540 FS: 0000555558fc0480(0000) GS:ffff88806b100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c000adc000 CR3: 0000000045080000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: generic_shutdown_super+0x159/0x3d0 fs/super.c:642 kill_anon_super+0x3a/0x60 fs/super.c:1226 btrfs_kill_super+0x3b/0x50 fs/btrfs/super.c:2096 deactivate_locked_super+0xbe/0x1a0 fs/super.c:473 deactivate_super+0xde/0x100 fs/super.c:506 cleanup_mnt+0x222/0x450 fs/namespace.c:1267 task_work_run+0x14e/0x250 kernel/task_work.c:180 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+0x278/0x2a0 kernel/entry/common.c:218 do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fe2c207e217 Code: b0 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 b0 ff ff ff f7 d8 64 89 02 b8 RSP: 002b:00007fff1ead5078 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fe2c207e217 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fff1ead5130 RBP: 00007fff1ead5130 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000ffffffff R11: 0000000000000246 R12: 00007fff1ead61f0 R13: 00007fe2c20c8336 R14: 000000000001ae65 R15: 0000000000000006 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:close_ctree+0xd72/0xf90 fs/btrfs/disk-io.c:4335 Code: e9 ce f6 ff ff e8 0e 45 00 fe b9 ef 10 00 00 48 c7 c2 80 b5 76 8b 48 c7 c6 a0 ef 76 8b 48 c7 c7 00 b6 76 8b e8 9f b3 e0 fd 90 <0f> 0b e8 e7 44 00 fe b9 f8 10 00 00 48 c7 c2 80 b5 76 8b 48 c7 c6 RSP: 0018:ffffc90003447bf0 EFLAGS: 00010282 RAX: 0000000000000051 RBX: ffff88802eec8d38 RCX: ffffffff816e69b9 RDX: 0000000000000000 RSI: ffffffff816ef706 RDI: 0000000000000005 RBP: ffff88802eec8010 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000080000000 R11: 0000000000000001 R12: 0000000000000000 R13: ffff888045796780 R14: ffff88802eec8000 R15: ffff8880476eb540 FS: 0000555558fc0480(0000) GS:ffff88806b100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c000adc000 CR3: 0000000045080000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400