IPVS: stop unused estimator thread 0...
------------[ cut here ]------------
WARNING: CPU: 1 PID: 17908 at net/xfrm/xfrm_state.c:3306 xfrm_state_fini+0x26d/0x2f0 net/xfrm/xfrm_state.c:3306
Modules linked in:
CPU: 1 UID: 0 PID: 17908 Comm: kworker/u8:19 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
Workqueue: netns cleanup_net
RIP: 0010:xfrm_state_fini+0x26d/0x2f0 net/xfrm/xfrm_state.c:3306
Code: c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 ab bb b8 f8 48 8b 3b 5b 41 5c 41 5d 41 5e 41 5f 5d e9 49 6c 9a f8 e8 94 18 57 f8 90 <0f> 0b 90 e9 fd fd ff ff e8 86 18 57 f8 90 0f 0b 90 e9 60 fe ff ff
RSP: 0018:ffffc90010357898 EFLAGS: 00010293
RAX: ffffffff89668fdc RBX: ffff8880383f5000 RCX: ffff888038cf3c00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900103579b0 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffffbfff1d6bcef R12: ffffffff8e762b40
R13: 1ffff9200206af40 R14: ffff8880383f6800 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff88812711c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f43f6c24f98 CR3: 000000004ca8a000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 xfrm_net_exit+0x2d/0x70 net/xfrm/xfrm_policy.c:4354
 ops_exit_list net/core/net_namespace.c:199 [inline]
 ops_undo_list+0x49a/0x990 net/core/net_namespace.c:252
 cleanup_net+0x4de/0x820 net/core/net_namespace.c:695
 process_one_work kernel/workqueue.c:3263 [inline]
 process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3346
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3427
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x439/0x7d0 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>