bond0: (slave wlan1): Releasing backup interface ------------[ cut here ]------------ WARNING: CPU: 1 PID: 9138 at net/mac80211/chan.c:2017 ieee80211_link_release_channel+0x16c/0x19c net/mac80211/chan.c:2017 Modules linked in: CPU: 1 PID: 9138 Comm: kworker/u4:22 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 : ffff800021cc7500 x29: ffff800021cc7500 x28: ffff700004398ec4 x27: ffff0000f6294060 x26: ffff0000f6294000 x25: 1fffe0001ec52802 x24: dead000000000100 x23: 1fffe0001ec52ab5 x22: dfff800000000000 x21: 0000000000000000 x20: ffff0000f6296228 x19: ffff0000f62955a8 x18: ffff800011b9bf60 x17: 1fffe00033eaa57e x16: ffff8000082d7db8 x15: 0000000000000000 x14: 0000000000000001 x13: 1ffff00004398e50 x12: 0000000000ff0100 x11: ff00800011361584 x10: 0000000000000000 x9 : ffff800011361584 x8 : ffff0000c32c8000 x7 : ffff800011361484 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff8000082d05a8 x2 : ffff0000c32c8000 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: 992886 hardirqs last enabled at (992885): [] __cancel_work_timer+0x2c4/0x458 kernel/workqueue.c:3156 hardirqs last disabled at (992886): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (991728): [] softirq_handle_end kernel/softirq.c:439 [inline] softirqs last enabled at (991728): [] handle_softirqs+0xaec/0xc60 kernel/softirq.c:624 softirqs last disabled at (991723): [] __do_softirq+0x14/0x20 kernel/softirq.c:630 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ wlan1: Failed check-sdata-in-driver check, flags: 0x0 WARNING: CPU: 1 PID: 9138 at net/mac80211/driver-ops.c:315 drv_unassign_vif_chanctx+0x358/0x638 net/mac80211/driver-ops.c:315 Modules linked in: CPU: 1 PID: 9138 Comm: kworker/u4:22 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 : ffff800021cc73b0 x29: ffff800021cc73b0 x28: 0000000000000000 x27: ffff0000f6294c80 x26: ffff0000f6296668 x25: dfff800000000000 x24: ffff0000f62967b8 x23: 0000000000000000 x22: ffff0000f9093400 x21: ffff0000f62967b8 x20: ffff800017bec000 x19: ffff0000f6294c80 x18: ffff800011b9bf60 x17: 1fffe00033eaa57e x16: ffff8000082d92bc x15: 0000000040000000 x14: 0000000000000001 x13: 1fffe00033eacc30 x12: 0000000000ff0100 x11: ff0080000a8df7b0 x10: 0000000000000003 x9 : 7bc91f647c557a00 x8 : 7bc91f647c557a00 x7 : ffff800008257984 x6 : 0000000000000000 x5 : 0000000000000080 x4 : 0000000000000001 x3 : 0000000000000000 x2 : 0000000000000006 x1 : ffff800011b9da80 x0 : ffff80018a3dd000 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: 993122 hardirqs last enabled at (993121): [] raw_spin_rq_unlock_irq kernel/sched/sched.h:1374 [inline] hardirqs last enabled at (993121): [] finish_lock_switch+0xb0/0x1c4 kernel/sched/core.c:5004 hardirqs last disabled at (993122): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (993110): [] softirq_handle_end kernel/softirq.c:439 [inline] softirqs last enabled at (993110): [] handle_softirqs+0xaec/0xc60 kernel/softirq.c:624 softirqs last disabled at (993099): [] __do_softirq+0x14/0x20 kernel/softirq.c:630 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ wlan1: Failed check-sdata-in-driver check, flags: 0x0 WARNING: CPU: 1 PID: 9138 at net/mac80211/driver-ops.h:156 drv_vif_cfg_changed net/mac80211/driver-ops.h:156 [inline] WARNING: CPU: 1 PID: 9138 at net/mac80211/driver-ops.h:156 ieee80211_vif_cfg_change_notify+0x21c/0x25c net/mac80211/main.c:275 Modules linked in: CPU: 1 PID: 9138 Comm: kworker/u4:22 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 : ffff800021cc73b0 x29: ffff800021cc73b0 x28: ffff800015220000 x27: ffff800015220384 x26: ffff0000f9093420 x25: 0000000000000000 x24: dfff800000000000 x23: 0000000000000000 x22: ffff0000f6296760 x21: ffff0000f6410e80 x20: ffff800017bec000 x19: ffff0000f6294c80 x18: ffff800011b9bf60 x17: 1fffe00033eaa57e x16: ffff8000082d92bc x15: 0000000040000000 x14: 0000000000000001 x13: 1fffe00033eacc30 x12: 0000000000ff0100 x11: ff0080000a8df7b0 x10: 0000000000000003 x9 : 7bc91f647c557a00 x8 : 7bc91f647c557a00 x7 : ffff800008257984 x6 : 0000000000000000 x5 : 0000000000000080 x4 : 0000000000000001 x3 : 0000000000000000 x2 : 0000000000000006 x1 : ffff800011b9da80 x0 : ffff80018a3dd000 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: 993304 hardirqs last enabled at (993303): [] raw_spin_rq_unlock_irq kernel/sched/sched.h:1374 [inline] hardirqs last enabled at (993303): [] finish_lock_switch+0xb0/0x1c4 kernel/sched/core.c:5004 hardirqs last disabled at (993304): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (993272): [] softirq_handle_end kernel/softirq.c:439 [inline] softirqs last enabled at (993272): [] handle_softirqs+0xaec/0xc60 kernel/softirq.c:624 softirqs last disabled at (993125): [] __do_softirq+0x14/0x20 kernel/softirq.c:630 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ WARNING: CPU: 1 PID: 9138 at net/mac80211/iface.c:113 __ieee80211_recalc_idle net/mac80211/iface.c:113 [inline] WARNING: CPU: 1 PID: 9138 at net/mac80211/iface.c:113 ieee80211_recalc_idle+0x298/0x338 net/mac80211/iface.c:149 Modules linked in: CPU: 1 PID: 9138 Comm: kworker/u4:22 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 : ffff800021cc73a0 x29: ffff800021cc73a0 x28: 0000000000000000 x27: ffff800015220000 x26: ffff0000f9093420 x25: 0000000000000000 x24: dfff800000000000 x23: 000000000000096c x22: 1fffe0001ec821d7 x21: dfff800000000000 x20: 0000000000000000 x19: ffff0000f6410e80 x18: ffff800011b9bf60 x17: 1fffe00033eaa57e x16: ffff8000082d7db8 x15: 0000000000000000 x14: 0000000000000007 x13: 1ffff00002a44071 x12: 0000000000ff0100 x11: ff00800011299f10 x10: 0000000000000000 x9 : ffff800011299f10 x8 : ffff0000c32c8000 x7 : ffff800011239b28 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: 993388 hardirqs last enabled at (993387): [] __exit_to_kernel_mode arch/arm64/kernel/entry-common.c:84 [inline] hardirqs last enabled at (993387): [] exit_to_kernel_mode+0xcc/0xfc arch/arm64/kernel/entry-common.c:94 hardirqs last disabled at (993388): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (993382): [] softirq_handle_end kernel/softirq.c:439 [inline] softirqs last enabled at (993382): [] handle_softirqs+0xaec/0xc60 kernel/softirq.c:624 softirqs last disabled at (993307): [] __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: 9138 at lib/debugobjects.c:518 debug_print_object lib/debugobjects.c:515 [inline] WARNING: CPU: 1 PID: 9138 at lib/debugobjects.c:518 __debug_check_no_obj_freed lib/debugobjects.c:979 [inline] WARNING: CPU: 1 PID: 9138 at lib/debugobjects.c:518 debug_check_no_obj_freed+0x38c/0x46c lib/debugobjects.c:1009 Modules linked in: CPU: 1 PID: 9138 Comm: kworker/u4:22 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 : ffff800021cc73f0 x29: ffff800021cc7430 x28: ffff0000f6298000 x27: 0000000000000000 x26: ffff800011bbb080 x25: ffff0000f62959f8 x24: ffff80001141112c x23: ffff0000d4b90c78 x22: 1fffe0001a972197 x21: dfff800000000000 x20: 0000000000000005 x19: ffff0000f6294000 x18: ffff800011b9bf60 x17: 0000000000000000 x16: ffff8000082d92bc x15: 0000000000000000 x14: 0000000000000001 x13: 1ffff00002a7d9d4 x12: 0000000000ff0100 x11: ff00800008194250 x10: 0000000000000000 x9 : 7bc91f647c557a00 x8 : 7bc91f647c557a00 x7 : ffff8000083144a0 x6 : 0000000000000000 x5 : 0000000000000080 x4 : 0000000000000001 x3 : 0000000000000000 x2 : 0000000000000007 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: 994476 hardirqs last enabled at (994475): [] console_emit_next_record+0x62c/0x808 kernel/printk/printk.c:2783 hardirqs last disabled at (994476): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (993454): [] softirq_handle_end kernel/softirq.c:439 [inline] softirqs last enabled at (993454): [] handle_softirqs+0xaec/0xc60 kernel/softirq.c:624 softirqs last disabled at (993391): [] __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 device veth1_macvtap left promiscuous mode device veth0_macvtap left promiscuous mode device veth1_vlan left promiscuous mode device veth0_vlan left promiscuous mode bond4 (unregistering): Released all slaves bond3 (unregistering): (slave bridge1): Releasing active interface bond3 (unregistering): Released all slaves bond2 (unregistering): Released all slaves bond1 (unregistering): Released all slaves bond0 (unregistering): Released all slaves