Have pending ack frames!
WARNING: CPU: 1 PID: 5963 at net/mac80211/main.c:1507 ieee80211_free_ack_frame+0x64/0x6c net/mac80211/main.c:1507
Modules linked in:

CPU: 1 PID: 5963 Comm: kworker/u4:5 Not tainted 6.3.0-rc3-syzkaller-ge8d018dd0257 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
Workqueue: netns cleanup_net

pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : ieee80211_free_ack_frame+0x64/0x6c net/mac80211/main.c:1507
lr : ieee80211_free_ack_frame+0x64/0x6c net/mac80211/main.c:1507
sp : ffff80001e247720
x29: ffff80001e247720
 x28: dfff800000000000
 x27: 0000000000000000

x26: 1ffff00003c48f10
 x25: 0000000000000001
 x24: ffff0000ccece970

x23: 1ffff00003c48ef1
 x22: ffff80001e247780
 x21: 1ffff00003c48ef0

x20: ffff80001853a000
 x19: ffff0000dc291000 x18: ffff80001e246c40
x17: 0000000000000000 x16: ffff8000122e1788 x15: 0000000000000000
x14: 1ffff00002b680b2 x13: dfff800000000000 x12: 0000000000000001
x11: ff808000081b7bc4 x10: 0000000000000000 x9 : 6ce0456e3d142100
x8 : 6ce0456e3d142100 x7 : ffff80000834db20 x6 : 0000000000000000
x5 : 0000000000000001 x4 : 0000000000000001 x3 : ffff80000858891c
x2 : 0000000000000001
 x1 : 0000000100000000
 x0 : 0000000000000000

Call trace:
 ieee80211_free_ack_frame+0x64/0x6c net/mac80211/main.c:1507
 idr_for_each+0x19c/0x2b4 lib/idr.c:208
 ieee80211_free_hw+0xd4/0x41c net/mac80211/main.c:1525
 mac80211_hwsim_del_radio+0x26c/0x3d8 drivers/net/wireless/mac80211_hwsim.c:4687
 hwsim_exit_net+0x518/0x5e0 drivers/net/wireless/mac80211_hwsim.c:5470
 ops_exit_list net/core/net_namespace.c:169 [inline]
 cleanup_net+0x564/0x8d0 net/core/net_namespace.c:613
 process_one_work+0x788/0x12d4 kernel/workqueue.c:2390
 worker_thread+0x8e0/0xfe8 kernel/workqueue.c:2537
 kthread+0x24c/0x2d4 kernel/kthread.c:376
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870
irq event stamp: 298422
hardirqs last  enabled at (298421): [<ffff8000083474a8>] console_emit_next_record kernel/printk/printk.c:2893 [inline]
hardirqs last  enabled at (298421): [<ffff8000083474a8>] console_flush_all+0x644/0xb54 kernel/printk/printk.c:2942
hardirqs last disabled at (298422): [<ffff8000122dd31c>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405
softirqs last  enabled at (295544): [<ffff8000105c6698>] spin_unlock_bh include/linux/spinlock.h:395 [inline]
softirqs last  enabled at (295544): [<ffff8000105c6698>] netif_addr_unlock_bh include/linux/netdevice.h:4497 [inline]
softirqs last  enabled at (295544): [<ffff8000105c6698>] dev_mc_flush+0x1b4/0x1f8 net/core/dev_addr_lists.c:1036
softirqs last disabled at (295542): [<ffff8000105c6bd0>] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19
---[ end trace 0000000000000000 ]---