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:4341 ------------[ cut here ]------------ kernel BUG at fs/btrfs/disk-io.c:4341! invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI CPU: 1 PID: 8373 Comm: syz-executor.2 Not tainted 6.9.0-rc4-syzkaller-00214-g13a2e429f644 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 RIP: 0010:close_ctree+0x905/0xd40 fs/btrfs/disk-io.c:4341 Code: e9 2c f9 ff ff e8 6b b5 21 f6 48 c7 c7 e0 1e 0b 8c 48 c7 c6 80 4d 0b 8c 48 c7 c2 60 1f 0b 8c b9 f5 10 00 00 e8 6c 9d ff ff 90 <0f> 0b e8 44 b5 21 f6 48 c7 c7 e0 1e 0b 8c 48 c7 c6 20 4e 0b 8c 48 RSP: 0018:ffffc90015297b60 EFLAGS: 00010246 RAX: 0000000000000051 RBX: ffff8880799acd38 RCX: 05eba388162e3200 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: ffffc90015297cf8 R08: ffffffff8176a40c R09: 1ffff92002a52f0c R10: dffffc0000000000 R11: fffff52002a52f0d R12: ffff8880799acfa0 R13: ffff8880799ac000 R14: 1ffff1100f335a5c R15: 0000000000000000 FS: 000055555d2e4480(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffe3ae8ece8 CR3: 00000000613ec000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: generic_shutdown_super+0x136/0x2d0 fs/super.c:641 kill_anon_super+0x3b/0x70 fs/super.c:1225 btrfs_kill_super+0x41/0x50 fs/btrfs/super.c:2091 deactivate_locked_super+0xc4/0x130 fs/super.c:472 cleanup_mnt+0x426/0x4c0 fs/namespace.c:1267 task_work_run+0x24f/0x310 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+0x168/0x370 kernel/entry/common.c:218 do_syscall_64+0x102/0x240 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f814007f1d7 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:00007ffd720245c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f814007f1d7 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd72024680 RBP: 00007ffd72024680 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffd72025740 R13: 00007f81400c93b9 R14: 0000000000055f01 R15: 0000000000000013 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:close_ctree+0x905/0xd40 fs/btrfs/disk-io.c:4341 Code: e9 2c f9 ff ff e8 6b b5 21 f6 48 c7 c7 e0 1e 0b 8c 48 c7 c6 80 4d 0b 8c 48 c7 c2 60 1f 0b 8c b9 f5 10 00 00 e8 6c 9d ff ff 90 <0f> 0b e8 44 b5 21 f6 48 c7 c7 e0 1e 0b 8c 48 c7 c6 20 4e 0b 8c 48 RSP: 0018:ffffc90015297b60 EFLAGS: 00010246 RAX: 0000000000000051 RBX: ffff8880799acd38 RCX: 05eba388162e3200 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: ffffc90015297cf8 R08: ffffffff8176a40c R09: 1ffff92002a52f0c R10: dffffc0000000000 R11: fffff52002a52f0d R12: ffff8880799acfa0 R13: ffff8880799ac000 R14: 1ffff1100f335a5c R15: 0000000000000000 FS: 000055555d2e4480(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000556af34fb680 CR3: 00000000613ec000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400