------------[ cut here ]------------
WARNING: CPU: 0 PID: 5968 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: 5968 Comm: kworker/u8:8 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: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 62 c6 ff 48 83 3b 00 75 0c e8 35 ad 60 ff 5b c3 cc cc cc cc cc e8 29 ad 60 ff 90 <0f> 0b 90 5b e9 cf 9d e9 08 cc 66 66 66 66 66 2e 0f 1f 84 00 00 00
RSP: 0018:ffffc9000a8cf8b0 EFLAGS: 00010293
RAX: ffffffff825f56c7 RBX: ffff88807c7da798 RCX: ffff88802e3d8000
RDX: 0000000000000000 RSI: ffffffff8d8f347e RDI: ffff88807c7da738
RBP: ffffc9000a8cf990 R08: ffffffff8f7cd377 R09: 1ffffffff1ef9a6e
R10: dffffc0000000000 R11: ffffffff8b036d70 R12: ffffffff8f5ce600
R13: 1ffff92001519f3c R14: ffffffff8f5ce5e0 R15: ffff88807c7da528
FS:  0000000000000000(0000) GS:ffff88812613e000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f34035156c0 CR3: 000000007c294000 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+0x4d8/0x820 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>