IPVS: stop unused estimator thread 0...
------------[ cut here ]------------
WARNING: CPU: 0 PID: 6136 at net/xfrm/xfrm_state.c:3306 xfrm_state_fini+0x26d/0x2f0 net/xfrm/xfrm_state.c:3306
Modules linked in:
CPU: 0 UID: 0 PID: 6136 Comm: kworker/u8:16 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
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 5b 69 34 f8 48 8b 3b 5b 41 5c 41 5d 41 5e 41 5f 5d e9 79 59 14 f8 e8 14 cb ce f7 90 <0f> 0b 90 e9 fd fd ff ff e8 06 cb ce f7 90 0f 0b 90 e9 60 fe ff ff
RSP: 0018:ffffc9000b757878 EFLAGS: 00010293
RAX: ffffffff89f0c8ec RBX: ffff888022358000 RCX: ffff8880277d0000
RDX: 0000000000000000 RSI: ffffffff8d9d15ab RDI: ffff8880277d0000
RBP: ffffc9000b757990 R08: ffffffff8f9e0f77 R09: 1ffffffff1f3c1ee
R10: dffffc0000000000 R11: fffffbfff1f3c1ef R12: ffffffff8f5da640
R13: 1ffff920016eaf3c R14: ffff8880223594c0 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff888125d0f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f88ab9b2d58 CR3: 0000000075c44000 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+0x4d8/0x820 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+0x4bc/0x870 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>