------------[ cut here ]------------ Have pending ack frames! WARNING: CPU: 1 PID: 9 at net/mac80211/main.c:1508 ieee80211_free_ack_frame+0x64/0x6c net/mac80211/main.c:1508 Modules linked in: CPU: 1 PID: 9 Comm: kworker/u4:0 Not tainted 6.1.147-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 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:1508 lr : ieee80211_free_ack_frame+0x64/0x6c net/mac80211/main.c:1508 sp : ffff80001c857760 x29: ffff80001c857760 x28: 0000000000000000 x27: ffff80001c8577a0 x26: dfff800000000000 x25: dfff800000000000 x24: ffff0000f5fa8000 x23: 0000000000000001 x22: ffff0000f4e358f0 x21: ffff0000f5f8b288 x20: ffff800017a78000 x19: ffff0000d26b8500 x18: ffff800011aabce0 x17: 0000000000000000 x16: ffff8000082d2374 x15: 0000000000000000 x14: 00000000ffffffff x13: 0000000000000001 x12: 0000000000ff0100 x11: ff00800008191c9c x10: 0000000000000000 x9 : 604b0b170ed12200 x8 : 604b0b170ed12200 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff80001c8571f8 x4 : ffff800015194800 x3 : ffff80000852e34c x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000000 Call trace: ieee80211_free_ack_frame+0x64/0x6c net/mac80211/main.c:1508 idr_for_each+0x17c/0x248 lib/idr.c:208 ieee80211_free_hw+0xc4/0x40c net/mac80211/main.c:1526 mac80211_hwsim_del_radio+0x260/0x3a8 drivers/net/wireless/mac80211_hwsim.c:4691 hwsim_exit_net+0x49c/0x558 drivers/net/wireless/mac80211_hwsim.c:5475 ops_exit_list net/core/net_namespace.c:172 [inline] cleanup_net+0x5c4/0xa74 net/core/net_namespace.c:640 process_one_work+0x7f4/0x13a8 kernel/workqueue.c:2292 worker_thread+0x8c8/0xfbc kernel/workqueue.c:2439 kthread+0x250/0x2d8 kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:849 irq event stamp: 5224990 hardirqs last enabled at (5224989): [] __up_console_sem+0xb4/0x100 kernel/printk/printk.c:261 hardirqs last disabled at (5224990): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (5222294): [] spin_unlock_bh include/linux/spinlock.h:396 [inline] softirqs last enabled at (5222294): [] netif_addr_unlock_bh include/linux/netdevice.h:4510 [inline] softirqs last enabled at (5222294): [] dev_mc_flush+0x1b0/0x1f4 net/core/dev_addr_lists.c:1036 softirqs last disabled at (5222292): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]--- device hsr_slave_0 left promiscuous mode device hsr_slave_1 left promiscuous mode batman_adv: batadv0: Removing interface: batadv_slave_0 batman_adv: batadv0: Removing interface: batadv_slave_1 device bridge_slave_1 left promiscuous mode bridge0: port 2(bridge_slave_1) entered disabled state device bridge_slave_0 left promiscuous mode bridge0: port 1(bridge_slave_0) entered disabled state device hsr_slave_0 left promiscuous mode device hsr_slave_1 left promiscuous mode batman_adv: batadv0: Removing interface: batadv_slave_0 batman_adv: batadv0: Removing interface: batadv_slave_1 device bridge_slave_1 left promiscuous mode bridge0: port 2(bridge_slave_1) entered disabled state device bridge_slave_0 left promiscuous mode bridge0: port 1(bridge_slave_0) entered disabled state device hsr_slave_0 left promiscuous mode device hsr_slave_1 left promiscuous mode batman_adv: batadv0: Interface deactivated: batadv_slave_0 batman_adv: batadv0: Removing interface: batadv_slave_0 batman_adv: batadv0: Interface deactivated: batadv_slave_1 batman_adv: batadv0: Removing interface: batadv_slave_1 device bridge_slave_1 left promiscuous mode bridge0: port 2(bridge_slave_1) entered disabled state device bridge_slave_0 left promiscuous mode bridge0: port 1(bridge_slave_0) entered disabled state device hsr_slave_0 left promiscuous mode device hsr_slave_1 left promiscuous mode batman_adv: batadv0: Interface deactivated: batadv_slave_0 batman_adv: batadv0: Removing interface: batadv_slave_0 batman_adv: batadv0: Interface deactivated: batadv_slave_1 batman_adv: batadv0: Removing interface: batadv_slave_1 device bridge_slave_1 left promiscuous mode bridge0: port 2(bridge_slave_1) entered disabled state device bridge_slave_0 left promiscuous mode bridge0: port 1(bridge_slave_0) entered disabled state device hsr_slave_0 left promiscuous mode device hsr_slave_1 left promiscuous mode batman_adv: batadv0: Removing interface: batadv_slave_0 batman_adv: batadv0: Removing interface: batadv_slave_1 device bridge_slave_1 left promiscuous mode bridge0: port 2(bridge_slave_1) entered disabled state device bridge_slave_0 left promiscuous mode bridge0: port 1(bridge_slave_0) entered disabled state device hsr_slave_0 left promiscuous mode device hsr_slave_1 left promiscuous mode batman_adv: batadv0: Removing interface: batadv_slave_0 batman_adv: batadv0: Removing interface: batadv_slave_1 device bridge_slave_1 left promiscuous mode bridge0: port 2(bridge_slave_1) entered disabled state device bridge_slave_0 left promiscuous mode bridge0: port 1(bridge_slave_0) entered disabled state device veth1_macvtap left promiscuous mode device veth0_macvtap left promiscuous mode device veth1_vlan left promiscuous mode device veth0_vlan left promiscuous mode device veth1_macvtap left promiscuous mode device veth1_vlan left promiscuous mode device veth0_vlan left promiscuous mode team0 (unregistering): Port device team_slave_1 removed team0 (unregistering): Port device team_slave_0 removed bond0 (unregistering): (slave bond_slave_1): Releasing backup interface bond0 (unregistering): (slave bond_slave_0): Releasing backup interface bond0 (unregistering): Released all slaves team0 (unregistering): Port device team_slave_1 removed team0 (unregistering): Port device team_slave_0 removed bond0 (unregistering): (slave bond_slave_1): Releasing backup interface bond0 (unregistering): (slave bond_slave_0): Releasing backup interface bond0 (unregistering): Released all slaves team0 (unregistering): Port device team_slave_1 removed team0 (unregistering): Port device team_slave_0 removed bond0 (unregistering): (slave bond_slave_1): Releasing backup interface bond0 (unregistering): (slave bond_slave_0): Releasing backup interface