batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active
IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready
------------[ cut here ]------------
IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready
Have pending ack frames!
WARNING: CPU: 0 PID: 7 at net/mac80211/main.c:1265 ieee80211_free_ack_frame+0x34/0x40 net/mac80211/main.c:1265
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 7 Comm: kworker/u4:0 Not tainted 4.19.163-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: netns cleanup_net
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x17c/0x22a lib/dump_stack.c:118
 panic+0x1cd/0x375 kernel/panic.c:186
 __warn.cold.7+0x1b/0x3e kernel/panic.c:541
 report_bug+0x1a4/0x200 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:178 [inline]
 do_error_trap+0x200/0x350 arch/x86/kernel/traps.c:296
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:316
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:1038
RIP: 0010:ieee80211_free_ack_frame+0x34/0x40 net/mac80211/main.c:1265
Code: 15 c9 5a 03 00 74 0c 48 89 f7 e8 f7 d1 e7 fe 31 c0 c9 c3 48 c7 c7 60 f6 f5 88 48 89 75 f8 c6 05 f5 c8 5a 03 01 e8 1f 21 ee f9 <0f> 0b 48 8b 75 f8 eb d5 0f 1f 40 00 55 be 04 00 00 00 48 89 e5 41
RSP: 0018:ffff8881f527f970 EFLAGS: 00010286
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: 0000000000000000
RDX: 0000000000000004 RSI: ffffffff885001a0 RDI: ffffffff8bad56e0
RBP: ffff8881f527f978 R08: ffffed103ec84e99 R09: ffffed103ec84e98
R10: ffffed103ec84e98 R11: ffff8881f64274c7 R12: 0000000000000000
R13: ffff8881eff883b0 R14: ffffffff87467840 R15: ffff8881f527fa38
 idr_for_each+0x114/0x250 lib/idr.c:211
 ieee80211_free_hw+0x77/0x130 net/mac80211/main.c:1280
 mac80211_hwsim_del_radio+0x2a7/0x360 drivers/net/wireless/mac80211_hwsim.c:2998
 hwsim_exit_net+0x869/0x1200 drivers/net/wireless/mac80211_hwsim.c:3666
 ops_exit_list.isra.0+0x8b/0x120 net/core/net_namespace.c:153
 cleanup_net+0x368/0x850 net/core/net_namespace.c:553
 process_one_work+0x7b9/0x15a0 kernel/workqueue.c:2155
 worker_thread+0x85/0xb60 kernel/workqueue.c:2298
 kthread+0x347/0x410 kernel/kthread.c:259
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
Kernel Offset: disabled
Rebooting in 86400 seconds..