------------[ cut here ]------------
WARNING: CPU: 0 PID: 18750 at fs/proc/proc_sysctl.c:1558 retire_sysctl_set+0x48/0x60 fs/proc/proc_sysctl.c:1558
Modules linked in:
CPU: 0 UID: 0 PID: 18750 Comm: kworker/u8:24 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: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 60 eb c6 ff 48 83 3b 00 75 0c e8 e5 6d 63 ff 5b c3 cc cc cc cc cc e8 d9 6d 63 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: 0000:ffffc90012f478d0 EFLAGS: 00010293
RAX: ffffffff825c3fb7 RBX: ffff88807dd3a720 RCX: ffff88801e7cda00
RDX: 0000000000000000 RSI: ffffffff8dba9961 RDI: ffff88807dd3a6c0
RBP: ffffc90012f479b0 R08: ffffffff8fa3a637 R09: 1ffffffff1f474c6
R10: dffffc0000000000 R11: ffffffff8b36b110 R12: ffffffff8f837da0
R13: 1ffff920025e8f40 R14: ffffffff8f837d80 R15: ffff88807dd3a4e8
FS:  0000000000000000(0000) GS:ffff888125c12000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f382f374860 CR3: 000000004e4f6000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 ops_exit_list net/core/net_namespace.c:198 [inline]
 ops_undo_list+0x497/0x990 net/core/net_namespace.c:251
 cleanup_net+0x4c5/0x800 net/core/net_namespace.c:682
 process_one_work kernel/workqueue.c:3236 [inline]
 process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3319
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400
 kthread+0x70e/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x439/0x7d0 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>