------------[ cut here ]------------
WARNING: fs/proc/proc_sysctl.c:1558 at retire_sysctl_set+0x48/0x60 fs/proc/proc_sysctl.c:1558, CPU#0: kworker/u8:16/7448
Modules linked in:
CPU: 0 UID: 0 PID: 7448 Comm: kworker/u8:16 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 f0 e7 c4 ff 48 83 3b 00 75 0c e8 b5 c7 5e ff 5b e9 0f 60 fa 08 cc e8 a9 c7 5e ff 90 <0f> 0b 90 5b e9 ff 5f fa 08 cc 66 66 66 66 66 2e 0f 1f 84 00 00 00
RSP: 0018:ffffc9001b6978d0 EFLAGS: 00010293
RAX: ffffffff82623017 RBX: ffff88807a29a948 RCX: ffff88802556db80
RDX: 0000000000000000 RSI: ffffffff8d976175 RDI: ffff88807a29a8e8
RBP: ffffc9001b6979b0 R08: ffffffff8f822377 R09: 1ffffffff1f0446e
R10: dffffc0000000000 R11: ffffffff8b161ef0 R12: ffffffff8f621b80
R13: 1ffff920036d2f40 R14: ffffffff8f621b60 R15: ffff88807a29a668
FS:  0000000000000000(0000) GS:ffff888125e1f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c24fece CR3: 00000000586b0000 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>