------------[ cut here ]------------
WARNING: CPU: 1 PID: 13 at fs/proc/proc_sysctl.c:1558 retire_sysctl_set+0x48/0x60 fs/proc/proc_sysctl.c:1558
Modules linked in:
CPU: 1 UID: 0 PID: 13 Comm: kworker/u8:1 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 80 8b c6 ff 48 83 3b 00 75 0c e8 75 e1 61 ff 5b c3 cc cc cc cc cc e8 69 e1 61 ff 90 <0f> 0b 90 5b e9 0f 6c ea 08 cc 66 66 66 66 66 2e 0f 1f 84 00 00 00
RSP: 0018:ffffc900001278b0 EFLAGS: 00010293
RAX: ffffffff825d3a07 RBX: ffff888032f28318 RCX: ffff88801ce90000
RDX: 0000000000000000 RSI: ffffffff8d9c68ab RDI: ffff888032f282b8
RBP: ffffc90000127990 R08: ffffffff8f9d4c37 R09: 1ffffffff1f3a986
R10: dffffc0000000000 R11: ffffffff8b01c760 R12: ffffffff8f7d60e0
R13: 1ffff92000024f3c R14: ffffffff8f7d60c0 R15: ffff888032f280a8
FS:  0000000000000000(0000) GS:ffff888125e3b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffda8ff5d78 CR3: 0000000075f34000 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+0xade/0x17b0 kernel/workqueue.c:3346
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3427
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x4b9/0x870 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>