syzbot

vlan0: left promiscuous mode
veth1_macvtap: left promiscuous mode
veth1_vlan: left promiscuous mode
veth0_vlan: left promiscuous mode
IPVS: stop unused estimator thread 0...
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WARNING: fs/proc/proc_sysctl.c:1558 at retire_sysctl_set+0x48/0x60 fs/proc/proc_sysctl.c:1558, CPU#0: kworker/u8:37/22111
Modules linked in:
CPU: 0 UID: 0 PID: 22111 Comm: kworker/u8:37 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Workqueue: netns cleanup_net
RIP: 0010:retire_sysctl_set+0x48/0x60 fs/proc/proc_sysctl.c:1558
Code: 00 fc ff df 80 3c 08 00 74 08 48 89 df e8 c0 ed c4 ff 48 83 3b 00 75 0c e8 c5 ca 5e ff 5b c3 cc cc cc cc cc e8 b9 ca 5e ff 90 <0f> 0b 90 5b c3 cc cc cc cc cc 66 66 66 66 66 2e 0f 1f 84 00 00 00
RSP: 0018:ffffc90004daf8d0 EFLAGS: 00010293
RAX: ffffffff82622df7 RBX: ffff888031640388 RCX: ffff888069a0db80
RDX: 0000000000000000 RSI: ffffffff8d9774de RDI: ffff888031640328
RBP: ffffc90004daf9b0 R08: ffffffff8f822e77 R09: 1ffffffff1f045ce
R10: dffffc0000000000 R11: ffffffff8b1657f0 R12: ffffffff8f622540
R13: 1ffff920009b5f40 R14: ffffffff8f622520 R15: ffff8880316400a8
FS:  0000000000000000(0000) GS:ffff888125e1e000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555ffcfa3168 CR3: 000000000dd3a000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 ops_exit_list net/core/net_namespace.c:199 [inline]
 ops_undo_list+0x49a/0x990 net/core/net_namespace.c:252
 cleanup_net+0x4d8/0x7a0 net/core/net_namespace.c:696
 process_one_work kernel/workqueue.c:3257 [inline]
 process_scheduled_works+0xad1/0x1770 kernel/workqueue.c:3340
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3421
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x510/0xa50 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246
 </TASK>