bond0: (slave wlan1): Releasing backup interface ------------[ cut here ]------------ WARNING: CPU: 1 PID: 11 at net/mac80211/chan.c:2017 ieee80211_link_release_channel+0x16c/0x19c net/mac80211/chan.c:2017 Modules linked in: CPU: 1 PID: 11 Comm: kworker/u4:1 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 Workqueue: netns cleanup_net pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) pc : ieee80211_link_release_channel+0x16c/0x19c net/mac80211/chan.c:2017 lr : ieee80211_link_release_channel+0x16c/0x19c net/mac80211/chan.c:2017 sp : ffff80001c9f7500 x29: ffff80001c9f7500 x28: ffff70000393eec4 x27: ffff0000f60b0060 x26: ffff0000f60b0000 x25: 1fffe0001ec16002 x24: dead000000000100 x23: 1fffe0001ec162b5 x22: dfff800000000000 x21: 0000000000000000 x20: ffff0000f60b2228 x19: ffff0000f60b15a8 x18: ffff800011babf60 x17: ffff80001836c000 x16: ffff8000082d7ed4 x15: 0000000000000000 x14: 0000000000000001 x13: 1ffff0000393ee50 x12: 0000000000ff0100 x11: ff0080001136a6dc x10: 0000000000000000 x9 : ffff80001136a6dc x8 : ffff0000c09ab780 x7 : ffff80001136a5dc x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff8000082d06c4 x2 : ffff0000c09ab780 x1 : 0000000000000000 x0 : 0000000000000000 Call trace: ieee80211_link_release_channel+0x16c/0x19c net/mac80211/chan.c:2017 ieee80211_link_stop+0x9c/0xc4 net/mac80211/link.c:72 ieee80211_teardown_sdata net/mac80211/iface.c:855 [inline] ieee80211_uninit+0x98/0xd0 net/mac80211/iface.c:860 unregister_netdevice_many_notify+0x1184/0x1834 net/core/dev.c:11041 unregister_netdevice_many+0x28/0x38 net/core/dev.c:11077 ieee80211_remove_interfaces+0x398/0x600 net/mac80211/iface.c:2390 ieee80211_unregister_hw+0x60/0x278 net/mac80211/main.c:1483 mac80211_hwsim_del_radio+0x220/0x3b8 drivers/net/wireless/mac80211_hwsim.c:4688 hwsim_exit_net+0x4a0/0x564 drivers/net/wireless/mac80211_hwsim.c:5475 ops_exit_list net/core/net_namespace.c:172 [inline] cleanup_net+0x5d0/0xa84 net/core/net_namespace.c:640 process_one_work+0x7f8/0x13a4 kernel/workqueue.c:2292 worker_thread+0x8c4/0xfec kernel/workqueue.c:2439 kthread+0x250/0x2d8 kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:850 irq event stamp: 987390 hardirqs last enabled at (987389): [] __cancel_work_timer+0x2c4/0x458 kernel/workqueue.c:3156 hardirqs last disabled at (987390): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (986000): [] spin_unlock_bh include/linux/spinlock.h:396 [inline] softirqs last enabled at (986000): [] netif_addr_unlock_bh include/linux/netdevice.h:4508 [inline] softirqs last enabled at (986000): [] dev_mc_flush+0x1b0/0x1f4 net/core/dev_addr_lists.c:1036 softirqs last disabled at (985998): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ wlan1: Failed check-sdata-in-driver check, flags: 0x0 WARNING: CPU: 0 PID: 11 at net/mac80211/driver-ops.c:315 drv_unassign_vif_chanctx+0x358/0x638 net/mac80211/driver-ops.c:315 Modules linked in: CPU: 0 PID: 11 Comm: kworker/u4:1 Tainted: G W syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 Workqueue: netns cleanup_net pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) pc : drv_unassign_vif_chanctx+0x358/0x638 net/mac80211/driver-ops.c:315 lr : drv_unassign_vif_chanctx+0x358/0x638 net/mac80211/driver-ops.c:315 sp : ffff80001c9f73b0 x29: ffff80001c9f73b0 x28: 0000000000000000 x27: ffff0000f60b0c80 x26: ffff0000f60b2668 x25: dfff800000000000 x24: ffff0000f60b27b8 x23: 0000000000000000 x22: ffff0000d2b17a00 x21: ffff0000f60b27b8 x20: ffff800017bfd000 x19: ffff0000f60b0c80 x18: ffff800011babf60 x17: 1fffe00033ea3f7e x16: ffff8000082d93d8 x15: 0000000040000000 x14: 0000000000000001 x13: 1fffe00033ea6630 x12: 0000000000ff0100 x11: ff0080000a8df510 x10: 0000000000000003 x9 : b8630eb78f85e100 x8 : b8630eb78f85e100 x7 : ffff800008257aa0 x6 : 0000000000000000 x5 : 0000000000000080 x4 : 0000000000000001 x3 : 0000000000000000 x2 : 0000000000000006 x1 : ffff800011bada80 x0 : ffff80018a39a000 Call trace: drv_unassign_vif_chanctx+0x358/0x638 net/mac80211/driver-ops.c:315 ieee80211_assign_link_chanctx+0x140/0x82c net/mac80211/chan.c:868 __ieee80211_link_release_channel+0x29c/0x55c net/mac80211/chan.c:1799 ieee80211_link_release_channel+0x130/0x19c net/mac80211/chan.c:2018 ieee80211_link_stop+0x9c/0xc4 net/mac80211/link.c:72 ieee80211_teardown_sdata net/mac80211/iface.c:855 [inline] ieee80211_uninit+0x98/0xd0 net/mac80211/iface.c:860 unregister_netdevice_many_notify+0x1184/0x1834 net/core/dev.c:11041 unregister_netdevice_many+0x28/0x38 net/core/dev.c:11077 ieee80211_remove_interfaces+0x398/0x600 net/mac80211/iface.c:2390 ieee80211_unregister_hw+0x60/0x278 net/mac80211/main.c:1483 mac80211_hwsim_del_radio+0x220/0x3b8 drivers/net/wireless/mac80211_hwsim.c:4688 hwsim_exit_net+0x4a0/0x564 drivers/net/wireless/mac80211_hwsim.c:5475 ops_exit_list net/core/net_namespace.c:172 [inline] cleanup_net+0x5d0/0xa84 net/core/net_namespace.c:640 process_one_work+0x7f8/0x13a4 kernel/workqueue.c:2292 worker_thread+0x8c4/0xfec kernel/workqueue.c:2439 kthread+0x250/0x2d8 kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:850 irq event stamp: 987564 hardirqs last enabled at (987563): [] raw_spin_rq_unlock_irq kernel/sched/sched.h:1374 [inline] hardirqs last enabled at (987563): [] finish_lock_switch+0xb0/0x1c4 kernel/sched/core.c:5004 hardirqs last disabled at (987564): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (987534): [] softirq_handle_end kernel/softirq.c:439 [inline] softirqs last enabled at (987534): [] handle_softirqs+0xaec/0xc60 kernel/softirq.c:624 softirqs last disabled at (987393): [] __do_softirq+0x14/0x20 kernel/softirq.c:630 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ wlan1: Failed check-sdata-in-driver check, flags: 0x0 WARNING: CPU: 0 PID: 11 at net/mac80211/driver-ops.h:156 drv_vif_cfg_changed net/mac80211/driver-ops.h:156 [inline] WARNING: CPU: 0 PID: 11 at net/mac80211/driver-ops.h:156 ieee80211_vif_cfg_change_notify+0x21c/0x25c net/mac80211/main.c:275 Modules linked in: CPU: 0 PID: 11 Comm: kworker/u4:1 Tainted: G W syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 Workqueue: netns cleanup_net pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) pc : drv_vif_cfg_changed net/mac80211/driver-ops.h:156 [inline] pc : ieee80211_vif_cfg_change_notify+0x21c/0x25c net/mac80211/main.c:275 lr : drv_vif_cfg_changed net/mac80211/driver-ops.h:156 [inline] lr : ieee80211_vif_cfg_change_notify+0x21c/0x25c net/mac80211/main.c:275 sp : ffff80001c9f73b0 x29: ffff80001c9f73b0 x28: ffff800015230000 x27: ffff800015230384 x26: ffff0000d2b17a20 x25: 0000000000000000 x24: dfff800000000000 x23: 0000000000000000 x22: ffff0000f60b2760 x21: ffff0000d6478e80 x20: ffff800017bfd000 x19: ffff0000f60b0c80 x18: ffff800011babf60 x17: 1fffe00033ea3f7e x16: ffff8000082d93d8 x15: 0000000040000000 x14: 0000000000000001 x13: 1fffe00033ea6630 x12: 0000000000ff0100 x11: ff0080000a8df510 x10: 0000000000000003 x9 : b8630eb78f85e100 x8 : b8630eb78f85e100 x7 : ffff800008257aa0 x6 : 0000000000000000 x5 : 0000000000000080 x4 : 0000000000000001 x3 : 0000000000000000 x2 : 0000000000000006 x1 : ffff800011bada80 x0 : ffff80018a39a000 Call trace: drv_vif_cfg_changed net/mac80211/driver-ops.h:156 [inline] ieee80211_vif_cfg_change_notify+0x21c/0x25c net/mac80211/main.c:275 ieee80211_assign_link_chanctx+0x6e8/0x82c net/mac80211/chan.c:905 __ieee80211_link_release_channel+0x29c/0x55c net/mac80211/chan.c:1799 ieee80211_link_release_channel+0x130/0x19c net/mac80211/chan.c:2018 ieee80211_link_stop+0x9c/0xc4 net/mac80211/link.c:72 ieee80211_teardown_sdata net/mac80211/iface.c:855 [inline] ieee80211_uninit+0x98/0xd0 net/mac80211/iface.c:860 unregister_netdevice_many_notify+0x1184/0x1834 net/core/dev.c:11041 unregister_netdevice_many+0x28/0x38 net/core/dev.c:11077 ieee80211_remove_interfaces+0x398/0x600 net/mac80211/iface.c:2390 ieee80211_unregister_hw+0x60/0x278 net/mac80211/main.c:1483 mac80211_hwsim_del_radio+0x220/0x3b8 drivers/net/wireless/mac80211_hwsim.c:4688 hwsim_exit_net+0x4a0/0x564 drivers/net/wireless/mac80211_hwsim.c:5475 ops_exit_list net/core/net_namespace.c:172 [inline] cleanup_net+0x5d0/0xa84 net/core/net_namespace.c:640 process_one_work+0x7f8/0x13a4 kernel/workqueue.c:2292 worker_thread+0x8c4/0xfec kernel/workqueue.c:2439 kthread+0x250/0x2d8 kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:850 irq event stamp: 987784 hardirqs last enabled at (987783): [] raw_spin_rq_unlock_irq kernel/sched/sched.h:1374 [inline] hardirqs last enabled at (987783): [] finish_lock_switch+0xb0/0x1c4 kernel/sched/core.c:5004 hardirqs last disabled at (987784): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (987754): [] softirq_handle_end kernel/softirq.c:439 [inline] softirqs last enabled at (987754): [] handle_softirqs+0xaec/0xc60 kernel/softirq.c:624 softirqs last disabled at (987567): [] __do_softirq+0x14/0x20 kernel/softirq.c:630 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ WARNING: CPU: 0 PID: 11 at net/mac80211/iface.c:113 __ieee80211_recalc_idle net/mac80211/iface.c:113 [inline] WARNING: CPU: 0 PID: 11 at net/mac80211/iface.c:113 ieee80211_recalc_idle+0x298/0x338 net/mac80211/iface.c:149 Modules linked in: CPU: 0 PID: 11 Comm: kworker/u4:1 Tainted: G W syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 Workqueue: netns cleanup_net pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) pc : __ieee80211_recalc_idle net/mac80211/iface.c:113 [inline] pc : ieee80211_recalc_idle+0x298/0x338 net/mac80211/iface.c:149 lr : __ieee80211_recalc_idle net/mac80211/iface.c:113 [inline] lr : ieee80211_recalc_idle+0x298/0x338 net/mac80211/iface.c:149 sp : ffff80001c9f73a0 x29: ffff80001c9f73a0 x28: 0000000000000000 x27: ffff800015230000 x26: ffff0000d2b17a20 x25: 0000000000000000 x24: dfff800000000000 x23: 000000000000096c x22: 1fffe0001ac8f1d7 x21: dfff800000000000 x20: 0000000000000000 x19: ffff0000d6478e80 x18: ffff800011babf60 x17: 1fffe00033ea3f7e x16: ffff8000082d7ed4 x15: 0000000000000000 x14: 0000000000000007 x13: 1ffff00002a46071 x12: 0000000000ff0100 x11: ff008000112a3068 x10: 0000000000000000 x9 : ffff8000112a3068 x8 : ffff0000c09ab780 x7 : ffff800011242c80 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000002 x2 : 0000000000000008 x1 : 0000000000000000 x0 : 0000000000000000 Call trace: __ieee80211_recalc_idle net/mac80211/iface.c:113 [inline] ieee80211_recalc_idle+0x298/0x338 net/mac80211/iface.c:149 ieee80211_del_chanctx+0x35c/0x70c net/mac80211/chan.c:750 ieee80211_free_chanctx+0x250/0x334 net/mac80211/chan.c:761 __ieee80211_link_release_channel+0x3d4/0x55c net/mac80211/chan.c:1801 ieee80211_link_release_channel+0x130/0x19c net/mac80211/chan.c:2018 ieee80211_link_stop+0x9c/0xc4 net/mac80211/link.c:72 ieee80211_teardown_sdata net/mac80211/iface.c:855 [inline] ieee80211_uninit+0x98/0xd0 net/mac80211/iface.c:860 unregister_netdevice_many_notify+0x1184/0x1834 net/core/dev.c:11041 unregister_netdevice_many+0x28/0x38 net/core/dev.c:11077 ieee80211_remove_interfaces+0x398/0x600 net/mac80211/iface.c:2390 ieee80211_unregister_hw+0x60/0x278 net/mac80211/main.c:1483 mac80211_hwsim_del_radio+0x220/0x3b8 drivers/net/wireless/mac80211_hwsim.c:4688 hwsim_exit_net+0x4a0/0x564 drivers/net/wireless/mac80211_hwsim.c:5475 ops_exit_list net/core/net_namespace.c:172 [inline] cleanup_net+0x5d0/0xa84 net/core/net_namespace.c:640 process_one_work+0x7f8/0x13a4 kernel/workqueue.c:2292 worker_thread+0x8c4/0xfec kernel/workqueue.c:2439 kthread+0x250/0x2d8 kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:850 irq event stamp: 987858 hardirqs last enabled at (987857): [] __exit_to_kernel_mode arch/arm64/kernel/entry-common.c:84 [inline] hardirqs last enabled at (987857): [] exit_to_kernel_mode+0xcc/0xfc arch/arm64/kernel/entry-common.c:94 hardirqs last disabled at (987858): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (987852): [] softirq_handle_end kernel/softirq.c:439 [inline] softirqs last enabled at (987852): [] handle_softirqs+0xaec/0xc60 kernel/softirq.c:624 softirqs last disabled at (987787): [] __do_softirq+0x14/0x20 kernel/softirq.c:630 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ ODEBUG: free active (active state 0) object type: timer_list hint: mesh_rmc_init net/mac80211/mesh.c:-1 [inline] ODEBUG: free active (active state 0) object type: timer_list hint: ieee80211_mesh_housekeeping_timer+0x0/0xb4 net/mac80211/mesh.c:1630 WARNING: CPU: 1 PID: 11 at lib/debugobjects.c:518 debug_print_object lib/debugobjects.c:515 [inline] WARNING: CPU: 1 PID: 11 at lib/debugobjects.c:518 __debug_check_no_obj_freed lib/debugobjects.c:979 [inline] WARNING: CPU: 1 PID: 11 at lib/debugobjects.c:518 debug_check_no_obj_freed+0x38c/0x46c lib/debugobjects.c:1009 Modules linked in: CPU: 1 PID: 11 Comm: kworker/u4:1 Tainted: G W syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 Workqueue: netns cleanup_net pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) pc : debug_print_object lib/debugobjects.c:515 [inline] pc : __debug_check_no_obj_freed lib/debugobjects.c:979 [inline] pc : debug_check_no_obj_freed+0x38c/0x46c lib/debugobjects.c:1009 lr : debug_print_object lib/debugobjects.c:515 [inline] lr : __debug_check_no_obj_freed lib/debugobjects.c:979 [inline] lr : debug_check_no_obj_freed+0x38c/0x46c lib/debugobjects.c:1009 sp : ffff80001c9f73f0 x29: ffff80001c9f7430 x28: ffff0000f60b4000 x27: 0000000000000000 x26: ffff800011bcb080 x25: ffff0000f60b19f8 x24: ffff80001141a284 x23: ffff0000f5bfcf88 x22: 1fffe0001eb7e401 x21: dfff800000000000 x20: 0000000000000007 x19: ffff0000f60b0000 x18: ffff800011babf60 x17: 6e6968207473696c x16: ffff8000082d93d8 x15: 0000000000000000 x14: 0000000000000001 x13: 1fffe00033ea81a3 x12: 0000000000ff0100 x11: ff00800008194250 x10: 0000000000000000 x9 : b8630eb78f85e100 x8 : b8630eb78f85e100 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff80001c9f6e78 x4 : ffff800015314cc0 x3 : ffff8000085389e4 x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000000 Call trace: debug_print_object lib/debugobjects.c:515 [inline] __debug_check_no_obj_freed lib/debugobjects.c:979 [inline] debug_check_no_obj_freed+0x38c/0x46c lib/debugobjects.c:1009 free_pages_prepare mm/page_alloc.c:1492 [inline] free_pcp_prepare mm/page_alloc.c:1536 [inline] free_unref_page_prepare+0x710/0xaf0 mm/page_alloc.c:3413 free_unref_page+0x7c/0x3a0 mm/page_alloc.c:3508 free_the_page mm/page_alloc.c:781 [inline] __free_pages+0x1a0/0x1cc mm/page_alloc.c:5746 free_large_kmalloc+0xc8/0x158 mm/slab_common.c:913 kfree+0xf4/0x1a8 mm/slab_common.c:982 kvfree+0x40/0x50 mm/util.c:627 netdev_freemem+0x4c/0x64 net/core/dev.c:10724 netdev_release+0x88/0xb0 net/core/net-sysfs.c:1908 device_release+0x8c/0x1ac drivers/base/core.c:-1 kobject_cleanup lib/kobject.c:681 [inline] kobject_release lib/kobject.c:712 [inline] kref_put include/linux/kref.h:65 [inline] kobject_put+0x2a8/0x420 lib/kobject.c:729 netdev_run_todo+0xc04/0xd2c net/core/dev.c:10560 rtnl_unlock+0x14/0x20 net/core/rtnetlink.c:147 ieee80211_unregister_hw+0xfc/0x278 net/mac80211/main.c:1490 mac80211_hwsim_del_radio+0x220/0x3b8 drivers/net/wireless/mac80211_hwsim.c:4688 hwsim_exit_net+0x4a0/0x564 drivers/net/wireless/mac80211_hwsim.c:5475 ops_exit_list net/core/net_namespace.c:172 [inline] cleanup_net+0x5d0/0xa84 net/core/net_namespace.c:640 process_one_work+0x7f8/0x13a4 kernel/workqueue.c:2292 worker_thread+0x8c4/0xfec kernel/workqueue.c:2439 kthread+0x250/0x2d8 kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:850 irq event stamp: 988722 hardirqs last enabled at (988721): [] __up_console_sem+0xb4/0xfc kernel/printk/printk.c:261 hardirqs last disabled at (988722): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (987998): [] softirq_handle_end kernel/softirq.c:439 [inline] softirqs last enabled at (987998): [] handle_softirqs+0xaec/0xc60 kernel/softirq.c:624 softirqs last disabled at (987861): [] __do_softirq+0x14/0x20 kernel/softirq.c:630 ---[ end trace 0000000000000000 ]--- 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 veth1_macvtap left promiscuous mode device veth0_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