------------[ cut here ]------------
WARNING: CPU: 1 PID: 9 at lib/ref_tracker.c:39 spin_unlock_irqrestore include/linux/spinlock.h:405 [inline]
WARNING: CPU: 1 PID: 9 at lib/ref_tracker.c:39 ref_tracker_dir_exit+0x3a2/0x600 lib/ref_tracker.c:38
Modules linked in:
CPU: 1 PID: 9 Comm: kworker/u4:0 Not tainted 6.3.0-rc4-syzkaller-01175-gb103bab0944b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023
Workqueue: netns cleanup_net
RIP: 0010:ref_tracker_dir_exit+0x3a2/0x600 lib/ref_tracker.c:39
Code: 0f 84 c3 fe ff ff e8 6d dd 43 fd 44 89 ff e8 c5 f9 ff ff e9 b1 fe ff ff e8 5b dd 43 fd 48 8b 74 24 10 4c 89 ef e8 0e 00 c8 05 <0f> 0b e8 47 dd 43 fd 49 8d 6d 44 be 04 00 00 00 48 89 ef e8 e6 2c
RSP: 0018:ffffc900000e7c00 EFLAGS: 00010246
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: 0000000000000000
RDX: 0000000000000001 RSI: 0000000000000001 RDI: 0000000000000001
RBP: ffff88801cfc1ed0 R08: 0000000000000001 R09: ffffffff914e0c7f
R10: 0000000000000001 R11: 0000000000000000 R12: ffff88801cfc1ed0
R13: ffff88801cfc1e80 R14: ffff88801cfc1ed0 R15: ffff888021b30948
FS:  0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000556d04fd0950 CR3: 0000000077b44000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 net_free net/core/net_namespace.c:447 [inline]
 net_free net/core/net_namespace.c:441 [inline]
 cleanup_net+0x8bb/0xb10 net/core/net_namespace.c:634
 process_one_work+0x991/0x15c0 kernel/workqueue.c:2390
 worker_thread+0x669/0x1090 kernel/workqueue.c:2537
 kthread+0x2e8/0x3a0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>