------------[ cut here ]------------
WARNING: CPU: 0 PID: 1025 at lib/ref_tracker.c:39 spin_unlock_irqrestore include/linux/spinlock.h:405 [inline]
WARNING: CPU: 0 PID: 1025 at lib/ref_tracker.c:39 ref_tracker_dir_exit+0x3a8/0x4b0 lib/ref_tracker.c:38
Modules linked in:
CPU: 0 PID: 1025 Comm: kworker/u4:5 Not tainted 6.2.0-syzkaller-13277-g2eb29d59ddf0 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023
Workqueue: netns cleanup_net
RIP: 0010:ref_tracker_dir_exit+0x3a8/0x4b0 lib/ref_tracker.c:39
Code: c1 0f 8c e0 fe ff ff 48 89 ef e8 23 5a 6c fd e9 d3 fe ff ff e8 c9 e3 15 fd 48 8b 2c 24 48 89 ef 48 8b 74 24 20 e8 d8 7d 4a 06 <0f> 0b eb 16 e8 af e3 15 fd 48 8b 2c 24 48 89 ef 48 8b 74 24 20 e8
RSP: 0018:ffffc9000496fb10 EFLAGS: 00010246
RAX: ee95ef8b2de3a200 RBX: ffff8880227f1ed0 RCX: 0000000000000001
RDX: dffffc0000000000 RSI: ffffffff8b0a8b00 RDI: 0000000000000001
RBP: ffff8880227f1e80 R08: dffffc0000000000 R09: fffffbfff209e263
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8880227f1ed0
R13: 1ffff11003a17ee0 R14: dffffc0000000000 R15: dead000000000100
FS:  0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f52438d35c0 CR3: 0000000032f1b000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 00000000b04aff16
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 net_free net/core/net_namespace.c:447 [inline]
 cleanup_net+0xabb/0xb80 net/core/net_namespace.c:634
 process_one_work+0x915/0x13a0 kernel/workqueue.c:2390
 worker_thread+0xa63/0x1210 kernel/workqueue.c:2537
 kthread+0x270/0x300 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>