IPVS: stop unused estimator thread 0...
------------[ cut here ]------------
WARNING: net/xfrm/xfrm_state.c:3306 at xfrm_state_fini+0x26d/0x2f0 net/xfrm/xfrm_state.c:3306, CPU#1: kworker/u8:3/37
Modules linked in:
CPU: 1 UID: 0 PID: 37 Comm: kworker/u8:3 Not tainted syzkaller #0 PREEMPT(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 6b 95 f1 f7 48 8b 3b 5b 41 5c 41 5d 41 5e 41 5f 5d e9 f9 96 d1 f7 e8 44 13 8d f7 90 <0f> 0b 90 e9 fd fd ff ff e8 36 13 8d f7 90 0f 0b 90 e9 60 fe ff ff
RSP: 0018:ffffc90000ad7878 EFLAGS: 00010293
RAX: ffffffff8a32f82c RBX: ffff888077838000 RCX: ffff8881436cbc80
RDX: 0000000000000000 RSI: ffffffff8de9418e RDI: ffff8881436cbc80
RBP: ffffc90000ad7990 R08: ffffffff8fe53a37 R09: 1ffffffff1fca746
R10: dffffc0000000000 R11: fffffbfff1fca747 R12: ffffffff8fa4dd80
R13: 1ffff9200015af3c R14: ffff888077839480 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8881258a7000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fee5ad056c0 CR3: 0000000076c52000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000009951
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 xfrm_net_exit+0x2d/0x70 net/xfrm/xfrm_policy.c:4354
 ops_exit_list net/core/net_namespace.c:198 [inline]
 ops_undo_list+0x49a/0x990 net/core/net_namespace.c:251
 cleanup_net+0x4c5/0x800 net/core/net_namespace.c:682
 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>