============================= WARNING: suspicious RCU usage 6.15.0-rc1-syzkaller-g2fe2b96c3818 #0 Not tainted ----------------------------- net/sched/sch_generic.c:1285 suspicious rcu_dereference_protected() usage! other info that might help us debug this: rcu_scheduler_active = 2, debug_locks = 1 3 locks held by kworker/u8:6/349: #0: ffff0000ee0b3148 ((wq_completion)bond0#2){+.+.}-{0:0}, at: process_one_work+0x674/0x1638 kernel/workqueue.c:3212 #1: ffff80009cc97b80 ((work_completion)(&(&bond->mii_work)->work)){+.+.}-{0:0}, at: process_one_work+0x708/0x1638 kernel/workqueue.c:3212 #2: ffff800090127de0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0x10/0x4c include/linux/rcupdate.h:330 stack backtrace: CPU: 1 UID: 0 PID: 349 Comm: kworker/u8:6 Not tainted 6.15.0-rc1-syzkaller-g2fe2b96c3818 #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 Workqueue: bond0 bond_mii_monitor Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:466 (C) __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 lockdep_rcu_suspicious+0x1a8/0x2c0 kernel/locking/lockdep.c:6865 dev_deactivate_queue+0xac/0x1e4 net/sched/sch_generic.c:1285 netdev_for_each_tx_queue include/linux/netdevice.h:2650 [inline] dev_deactivate_many+0x130/0xb70 net/sched/sch_generic.c:1361 dev_deactivate+0x13c/0x1fc net/sched/sch_generic.c:1398 linkwatch_do_dev+0x100/0x1a8 net/core/link_watch.c:184 linkwatch_sync_dev+0x150/0x16c net/core/link_watch.c:272 ethtool_op_get_link+0x20/0x5c net/ethtool/ioctl.c:63 bond_check_dev_link+0x1ac/0x3f4 drivers/net/bonding/bond_main.c:864 bond_miimon_inspect drivers/net/bonding/bond_main.c:2734 [inline] bond_mii_monitor+0x3d8/0x28b4 drivers/net/bonding/bond_main.c:2956 process_one_work+0x810/0x1638 kernel/workqueue.c:3238 process_scheduled_works kernel/workqueue.c:3319 [inline] worker_thread+0x97c/0xf08 kernel/workqueue.c:3400 kthread+0x674/0x7dc kernel/kthread.c:464 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:862 ============================= WARNING: suspicious RCU usage 6.15.0-rc1-syzkaller-g2fe2b96c3818 #0 Not tainted ----------------------------- ./include/linux/rtnetlink.h:163 suspicious rcu_dereference_protected() usage! other info that might help us debug this: rcu_scheduler_active = 2, debug_locks = 1 3 locks held by kworker/u8:6/349: #0: ffff0000ee0b3148 ((wq_completion)bond0#2){+.+.}-{0:0}, at: process_one_work+0x674/0x1638 kernel/workqueue.c:3212 #1: ffff80009cc97b80 ((work_completion)(&(&bond->mii_work)->work)){+.+.}-{0:0}, at: process_one_work+0x708/0x1638 kernel/workqueue.c:3212 #2: ffff800090127de0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0x10/0x4c include/linux/rcupdate.h:330 stack backtrace: CPU: 0 UID: 0 PID: 349 Comm: kworker/u8:6 Not tainted 6.15.0-rc1-syzkaller-g2fe2b96c3818 #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 Workqueue: bond0 bond_mii_monitor Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:466 (C) __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 lockdep_rcu_suspicious+0x1a8/0x2c0 kernel/locking/lockdep.c:6865 dev_ingress_queue include/linux/rtnetlink.h:163 [inline] dev_deactivate_many+0x208/0xb70 net/sched/sch_generic.c:1363 dev_deactivate+0x13c/0x1fc net/sched/sch_generic.c:1398 linkwatch_do_dev+0x100/0x1a8 net/core/link_watch.c:184 linkwatch_sync_dev+0x150/0x16c net/core/link_watch.c:272 ethtool_op_get_link+0x20/0x5c net/ethtool/ioctl.c:63 bond_check_dev_link+0x1ac/0x3f4 drivers/net/bonding/bond_main.c:864 bond_miimon_inspect drivers/net/bonding/bond_main.c:2734 [inline] bond_mii_monitor+0x3d8/0x28b4 drivers/net/bonding/bond_main.c:2956 process_one_work+0x810/0x1638 kernel/workqueue.c:3238 process_scheduled_works kernel/workqueue.c:3319 [inline] worker_thread+0x97c/0xf08 kernel/workqueue.c:3400 kthread+0x674/0x7dc kernel/kthread.c:464 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:862 ============================= WARNING: suspicious RCU usage 6.15.0-rc1-syzkaller-g2fe2b96c3818 #0 Not tainted ----------------------------- net/sched/sch_generic.c:1301 suspicious rcu_dereference_protected() usage! other info that might help us debug this: rcu_scheduler_active = 2, debug_locks = 1 3 locks held by kworker/u8:6/349: #0: ffff0000ee0b3148 ((wq_completion)bond0#2){+.+.}-{0:0}, at: process_one_work+0x674/0x1638 kernel/workqueue.c:3212 #1: ffff80009cc97b80 ((work_completion)(&(&bond->mii_work)->work)){+.+.}-{0:0}, at: process_one_work+0x708/0x1638 kernel/workqueue.c:3212 #2: ffff800090127de0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0x10/0x4c include/linux/rcupdate.h:330 stack backtrace: CPU: 0 UID: 0 PID: 349 Comm: kworker/u8:6 Not tainted 6.15.0-rc1-syzkaller-g2fe2b96c3818 #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 Workqueue: bond0 bond_mii_monitor Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:466 (C) __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 lockdep_rcu_suspicious+0x1a8/0x2c0 kernel/locking/lockdep.c:6865 dev_reset_queue+0xa8/0x1fc net/sched/sch_generic.c:1301 netdev_for_each_tx_queue include/linux/netdevice.h:2650 [inline] dev_deactivate_many+0x5c8/0xb70 net/sched/sch_generic.c:1375 dev_deactivate+0x13c/0x1fc net/sched/sch_generic.c:1398 linkwatch_do_dev+0x100/0x1a8 net/core/link_watch.c:184 linkwatch_sync_dev+0x150/0x16c net/core/link_watch.c:272 ethtool_op_get_link+0x20/0x5c net/ethtool/ioctl.c:63 bond_check_dev_link+0x1ac/0x3f4 drivers/net/bonding/bond_main.c:864 bond_miimon_inspect drivers/net/bonding/bond_main.c:2734 [inline] bond_mii_monitor+0x3d8/0x28b4 drivers/net/bonding/bond_main.c:2956 process_one_work+0x810/0x1638 kernel/workqueue.c:3238 process_scheduled_works kernel/workqueue.c:3319 [inline] worker_thread+0x97c/0xf08 kernel/workqueue.c:3400 kthread+0x674/0x7dc kernel/kthread.c:464 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:862 ============================= WARNING: suspicious RCU usage 6.15.0-rc1-syzkaller-g2fe2b96c3818 #0 Not tainted ----------------------------- net/sched/sch_generic.c:1332 suspicious rcu_dereference_protected() usage! other info that might help us debug this: rcu_scheduler_active = 2, debug_locks = 1 3 locks held by kworker/u8:6/349: #0: ffff0000ee0b3148 ((wq_completion)bond0#2){+.+.}-{0:0}, at: process_one_work+0x674/0x1638 kernel/workqueue.c:3212 #1: ffff80009cc97b80 ((work_completion)(&(&bond->mii_work)->work)){+.+.}-{0:0}, at: process_one_work+0x708/0x1638 kernel/workqueue.c:3212 #2: ffff800090127de0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0x10/0x4c include/linux/rcupdate.h:330 stack backtrace: CPU: 0 UID: 0 PID: 349 Comm: kworker/u8:6 Not tainted 6.15.0-rc1-syzkaller-g2fe2b96c3818 #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 Workqueue: bond0 bond_mii_monitor Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:466 (C) __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 lockdep_rcu_suspicious+0x1a8/0x2c0 kernel/locking/lockdep.c:6865 some_qdisc_is_busy net/sched/sch_generic.c:1332 [inline] dev_deactivate_many+0x8c4/0xb70 net/sched/sch_generic.c:1383 dev_deactivate+0x13c/0x1fc net/sched/sch_generic.c:1398 linkwatch_do_dev+0x100/0x1a8 net/core/link_watch.c:184 linkwatch_sync_dev+0x150/0x16c net/core/link_watch.c:272 ethtool_op_get_link+0x20/0x5c net/ethtool/ioctl.c:63 bond_check_dev_link+0x1ac/0x3f4 drivers/net/bonding/bond_main.c:864 bond_miimon_inspect drivers/net/bonding/bond_main.c:2734 [inline] bond_mii_monitor+0x3d8/0x28b4 drivers/net/bonding/bond_main.c:2956 process_one_work+0x810/0x1638 kernel/workqueue.c:3238 process_scheduled_works kernel/workqueue.c:3319 [inline] worker_thread+0x97c/0xf08 kernel/workqueue.c:3400 kthread+0x674/0x7dc kernel/kthread.c:464 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:862 BUG: sleeping function called from invalid context at kernel/locking/rwsem.c:1523 in_atomic(): 0, irqs_disabled(): 0, non_block: 0, pid: 349, name: kworker/u8:6 preempt_count: 0, expected: 0 RCU nest depth: 1, expected: 0 3 locks held by kworker/u8:6/349: #0: ffff0000ee0b3148 ((wq_completion)bond0#2){+.+.}-{0:0}, at: process_one_work+0x674/0x1638 kernel/workqueue.c:3212 #1: ffff80009cc97b80 ((work_completion)(&(&bond->mii_work)->work)){+.+.}-{0:0}, at: process_one_work+0x708/0x1638 kernel/workqueue.c:3212 #2: ffff800090127de0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0x10/0x4c include/linux/rcupdate.h:330 CPU: 0 UID: 0 PID: 349 Comm: kworker/u8:6 Not tainted 6.15.0-rc1-syzkaller-g2fe2b96c3818 #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 Workqueue: bond0 bond_mii_monitor Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:466 (C) __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 __might_resched+0x374/0x4d0 kernel/sched/core.c:8818 __might_sleep+0x90/0xe4 kernel/sched/core.c:8747 down_read+0x30/0x2fc kernel/locking/rwsem.c:1523 wireless_nlevent_flush net/wireless/wext-core.c:351 [inline] wext_netdev_notifier_call+0x2c/0x124 net/wireless/wext-core.c:371 notifier_call_chain+0x1c4/0x550 kernel/notifier.c:85 raw_notifier_call_chain+0x3c/0x50 kernel/notifier.c:453 call_netdevice_notifiers_info net/core/dev.c:2183 [inline] netdev_state_change+0x184/0x238 net/core/dev.c:1536 linkwatch_do_dev+0x108/0x1a8 net/core/link_watch.c:186 linkwatch_sync_dev+0x150/0x16c net/core/link_watch.c:272 ethtool_op_get_link+0x20/0x5c net/ethtool/ioctl.c:63 bond_check_dev_link+0x1ac/0x3f4 drivers/net/bonding/bond_main.c:864 bond_miimon_inspect drivers/net/bonding/bond_main.c:2734 [inline] bond_mii_monitor+0x3d8/0x28b4 drivers/net/bonding/bond_main.c:2956 process_one_work+0x810/0x1638 kernel/workqueue.c:3238 process_scheduled_works kernel/workqueue.c:3319 [inline] worker_thread+0x97c/0xf08 kernel/workqueue.c:3400 kthread+0x674/0x7dc kernel/kthread.c:464 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:862 ============================= [ BUG: Invalid wait context ] 6.15.0-rc1-syzkaller-g2fe2b96c3818 #0 Tainted: G W ----------------------------- kworker/u8:6/349 is trying to lock: ffff8000930749d0 (net_rwsem){++++}-{4:4}, at: wireless_nlevent_flush net/wireless/wext-core.c:351 [inline] ffff8000930749d0 (net_rwsem){++++}-{4:4}, at: wext_netdev_notifier_call+0x2c/0x124 net/wireless/wext-core.c:371 other info that might help us debug this: context-{5:5} 3 locks held by kworker/u8:6/349: #0: ffff0000ee0b3148 ((wq_completion)bond0#2){+.+.}-{0:0}, at: process_one_work+0x674/0x1638 kernel/workqueue.c:3212 #1: ffff80009cc97b80 ((work_completion)(&(&bond->mii_work)->work)){+.+.}-{0:0}, at: process_one_work+0x708/0x1638 kernel/workqueue.c:3212 #2: ffff800090127de0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0x10/0x4c include/linux/rcupdate.h:330 stack backtrace: CPU: 0 UID: 0 PID: 349 Comm: kworker/u8:6 Tainted: G W 6.15.0-rc1-syzkaller-g2fe2b96c3818 #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 Workqueue: bond0 bond_mii_monitor Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:466 (C) __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 print_lock_invalid_wait_context kernel/locking/lockdep.c:4831 [inline] check_wait_context kernel/locking/lockdep.c:4903 [inline] __lock_acquire+0xb4c/0x32c4 kernel/locking/lockdep.c:5185 lock_acquire+0x150/0x2e8 kernel/locking/lockdep.c:5866 down_read+0x58/0x2fc kernel/locking/rwsem.c:1524 wireless_nlevent_flush net/wireless/wext-core.c:351 [inline] wext_netdev_notifier_call+0x2c/0x124 net/wireless/wext-core.c:371 notifier_call_chain+0x1c4/0x550 kernel/notifier.c:85 raw_notifier_call_chain+0x3c/0x50 kernel/notifier.c:453 call_netdevice_notifiers_info net/core/dev.c:2183 [inline] netdev_state_change+0x184/0x238 net/core/dev.c:1536 linkwatch_do_dev+0x108/0x1a8 net/core/link_watch.c:186 linkwatch_sync_dev+0x150/0x16c net/core/link_watch.c:272 ethtool_op_get_link+0x20/0x5c net/ethtool/ioctl.c:63 bond_check_dev_link+0x1ac/0x3f4 drivers/net/bonding/bond_main.c:864 bond_miimon_inspect drivers/net/bonding/bond_main.c:2734 [inline] bond_mii_monitor+0x3d8/0x28b4 drivers/net/bonding/bond_main.c:2956 process_one_work+0x810/0x1638 kernel/workqueue.c:3238 process_scheduled_works kernel/workqueue.c:3319 [inline] worker_thread+0x97c/0xf08 kernel/workqueue.c:3400 kthread+0x674/0x7dc kernel/kthread.c:464 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:862