WARNING: CPU: 1 PID: 18556 at net/mac80211/main.c:1416 ieee80211_free_ack_frame+0x4a/0x50 net/mac80211/main.c:1416
Modules linked in:
CPU: 1 PID: 18556 Comm: kworker/u4:29 Not tainted 5.16.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: netns cleanup_net
RIP: 0010:ieee80211_free_ack_frame+0x4a/0x50 net/mac80211/main.c:1416
Code: 91 e4 f8 48 89 ef 31 f6 e8 e3 1a 95 fe 31 c0 5b 5d c3 e8 19 91 e4 f8 48 c7 c7 a0 6f ce 8a c6 05 8e be eb 04 01 e8 f0 24 73 00 <0f> 0b eb d0 66 90 41 57 41 56 49 89 f6 41 55 41 54 49 89 d4 55 48
RSP: 0018:ffffc90010c179d8 EFLAGS: 00010286
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff8880781f9d00 RSI: ffffffff815f1498 RDI: fffff52002182f2d
RBP: ffff88807c2c9780 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff815eb1fe R11: 0000000000000000 R12: dffffc0000000000
R13: ffffffff88933980 R14: 0000000000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff8dfa1d9b0 CR3: 000000007d558000 CR4: 0000000000350ee0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <TASK>
 idr_for_each+0x113/0x220 lib/idr.c:208
 ieee80211_free_hw+0x9b/0x2b0 net/mac80211/main.c:1432
 mac80211_hwsim_del_radio drivers/net/wireless/mac80211_hwsim.c:3586 [inline]
 hwsim_exit_net+0x55f/0xca0 drivers/net/wireless/mac80211_hwsim.c:4346
 ops_exit_list+0xb0/0x160 net/core/net_namespace.c:168
 cleanup_net+0x4ea/0xb00 net/core/net_namespace.c:595
 process_one_work+0x9ac/0x1650 kernel/workqueue.c:2307
 worker_thread+0x657/0x1110 kernel/workqueue.c:2454
 kthread+0x405/0x4f0 kernel/kthread.c:327
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>