============================= WARNING: suspicious RCU usage 6.15.0-rc7-syzkaller-00085-gd7fa1af5b33e #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/u8:6/304: #0: ffff0000cc314948 ((wq_completion)bond0#2){+.+.}-{0:0}, at: process_one_work+0x658/0x156c kernel/workqueue.c:3212 #1: ffff80009bac7bc0 ((work_completion)(&(&bond->mii_work)->work)){+.+.}-{0:0}, at: process_one_work+0x6ec/0x156c kernel/workqueue.c:3212 #2: ffff80008f508920 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0x10/0x4c include/linux/rcupdate.h:330 stack backtrace: CPU: 0 UID: 0 PID: 304 Comm: kworker/u8:6 Not tainted 6.15.0-rc7-syzkaller-00085-gd7fa1af5b33e #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+0x30/0x40 lib/dump_stack.c:94 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 lockdep_rcu_suspicious+0x168/0x274 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+0xd4/0xabc net/sched/sch_generic.c:1361 dev_deactivate+0x110/0x1a4 net/sched/sch_generic.c:1398 linkwatch_do_dev+0x100/0x1a8 net/core/link_watch.c:184 __linkwatch_sync_dev+0x28c/0x314 net/core/link_watch.c:282 ethtool_op_get_link+0x20/0x68 net/ethtool/ioctl.c:63 bond_check_dev_link+0x338/0x560 drivers/net/bonding/bond_main.c:866 bond_miimon_inspect drivers/net/bonding/bond_main.c:2739 [inline] bond_mii_monitor+0x3a0/0x2658 drivers/net/bonding/bond_main.c:2961 process_one_work+0x7e8/0x156c kernel/workqueue.c:3238 process_scheduled_works kernel/workqueue.c:3319 [inline] worker_thread+0x958/0xed8 kernel/workqueue.c:3400 kthread+0x5fc/0x75c kernel/kthread.c:464 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:847 ============================= WARNING: suspicious RCU usage 6.15.0-rc7-syzkaller-00085-gd7fa1af5b33e #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/u8:6/304: #0: ffff0000cc314948 ((wq_completion)bond0#2){+.+.}-{0:0}, at: process_one_work+0x658/0x156c kernel/workqueue.c:3212 #1: ffff80009bac7bc0 ((work_completion)(&(&bond->mii_work)->work)){+.+.}-{0:0}, at: process_one_work+0x6ec/0x156c kernel/workqueue.c:3212 #2: ffff80008f508920 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0x10/0x4c include/linux/rcupdate.h:330 stack backtrace: CPU: 0 UID: 0 PID: 304 Comm: kworker/u8:6 Not tainted 6.15.0-rc7-syzkaller-00085-gd7fa1af5b33e #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+0x30/0x40 lib/dump_stack.c:94 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 lockdep_rcu_suspicious+0x168/0x274 kernel/locking/lockdep.c:6865 dev_ingress_queue include/linux/rtnetlink.h:163 [inline] dev_deactivate_many+0x1a8/0xabc net/sched/sch_generic.c:1363 dev_deactivate+0x110/0x1a4 net/sched/sch_generic.c:1398 linkwatch_do_dev+0x100/0x1a8 net/core/link_watch.c:184 __linkwatch_sync_dev+0x28c/0x314 net/core/link_watch.c:282 ethtool_op_get_link+0x20/0x68 net/ethtool/ioctl.c:63 bond_check_dev_link+0x338/0x560 drivers/net/bonding/bond_main.c:866 bond_miimon_inspect drivers/net/bonding/bond_main.c:2739 [inline] bond_mii_monitor+0x3a0/0x2658 drivers/net/bonding/bond_main.c:2961 process_one_work+0x7e8/0x156c kernel/workqueue.c:3238 process_scheduled_works kernel/workqueue.c:3319 [inline] worker_thread+0x958/0xed8 kernel/workqueue.c:3400 kthread+0x5fc/0x75c kernel/kthread.c:464 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:847 ============================= WARNING: suspicious RCU usage 6.15.0-rc7-syzkaller-00085-gd7fa1af5b33e #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/u8:6/304: #0: ffff0000cc314948 ((wq_completion)bond0#2){+.+.}-{0:0}, at: process_one_work+0x658/0x156c kernel/workqueue.c:3212 #1: ffff80009bac7bc0 ((work_completion)(&(&bond->mii_work)->work)){+.+.}-{0:0}, at: process_one_work+0x6ec/0x156c kernel/workqueue.c:3212 #2: ffff80008f508920 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0x10/0x4c include/linux/rcupdate.h:330 stack backtrace: CPU: 0 UID: 0 PID: 304 Comm: kworker/u8:6 Not tainted 6.15.0-rc7-syzkaller-00085-gd7fa1af5b33e #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+0x30/0x40 lib/dump_stack.c:94 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 lockdep_rcu_suspicious+0x168/0x274 kernel/locking/lockdep.c:6865 dev_reset_queue+0xa8/0x1f8 net/sched/sch_generic.c:1301 netdev_for_each_tx_queue include/linux/netdevice.h:2650 [inline] dev_deactivate_many+0x550/0xabc net/sched/sch_generic.c:1375 dev_deactivate+0x110/0x1a4 net/sched/sch_generic.c:1398 linkwatch_do_dev+0x100/0x1a8 net/core/link_watch.c:184 __linkwatch_sync_dev+0x28c/0x314 net/core/link_watch.c:282 ethtool_op_get_link+0x20/0x68 net/ethtool/ioctl.c:63 bond_check_dev_link+0x338/0x560 drivers/net/bonding/bond_main.c:866 bond_miimon_inspect drivers/net/bonding/bond_main.c:2739 [inline] bond_mii_monitor+0x3a0/0x2658 drivers/net/bonding/bond_main.c:2961 process_one_work+0x7e8/0x156c kernel/workqueue.c:3238 process_scheduled_works kernel/workqueue.c:3319 [inline] worker_thread+0x958/0xed8 kernel/workqueue.c:3400 kthread+0x5fc/0x75c kernel/kthread.c:464 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:847 ============================= WARNING: suspicious RCU usage 6.15.0-rc7-syzkaller-00085-gd7fa1af5b33e #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/u8:6/304: #0: ffff0000cc314948 ((wq_completion)bond0#2){+.+.}-{0:0}, at: process_one_work+0x658/0x156c kernel/workqueue.c:3212 #1: ffff80009bac7bc0 ((work_completion)(&(&bond->mii_work)->work)){+.+.}-{0:0}, at: process_one_work+0x6ec/0x156c kernel/workqueue.c:3212 #2: ffff80008f508920 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0x10/0x4c include/linux/rcupdate.h:330 stack backtrace: CPU: 0 UID: 0 PID: 304 Comm: kworker/u8:6 Not tainted 6.15.0-rc7-syzkaller-00085-gd7fa1af5b33e #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+0x30/0x40 lib/dump_stack.c:94 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 lockdep_rcu_suspicious+0x168/0x274 kernel/locking/lockdep.c:6865 some_qdisc_is_busy net/sched/sch_generic.c:1332 [inline] dev_deactivate_many+0x854/0xabc net/sched/sch_generic.c:1383 dev_deactivate+0x110/0x1a4 net/sched/sch_generic.c:1398 linkwatch_do_dev+0x100/0x1a8 net/core/link_watch.c:184 __linkwatch_sync_dev+0x28c/0x314 net/core/link_watch.c:282 ethtool_op_get_link+0x20/0x68 net/ethtool/ioctl.c:63 bond_check_dev_link+0x338/0x560 drivers/net/bonding/bond_main.c:866 bond_miimon_inspect drivers/net/bonding/bond_main.c:2739 [inline] bond_mii_monitor+0x3a0/0x2658 drivers/net/bonding/bond_main.c:2961 process_one_work+0x7e8/0x156c kernel/workqueue.c:3238 process_scheduled_works kernel/workqueue.c:3319 [inline] worker_thread+0x958/0xed8 kernel/workqueue.c:3400 kthread+0x5fc/0x75c kernel/kthread.c:464 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:847 B BUG: sleeping function called from invalid context at kernel/locking/rwsem.c:1523 in_atomic(): 0, irqs_disabled(): 0, non_block: 0, pid: 304, name: kworker/u8:6 preempt_count: 0, expected: 0 RCU nest depth: 1, expected: 0 3 locks held by kworker/u8:6/304: #0: ffff0000cc314948 ((wq_completion)bond0#2){+.+.}-{0:0}, at: process_one_work+0x658/0x156c kernel/workqueue.c:3212 #1: ffff80009bac7bc0 ((work_completion)(&(&bond->mii_work)->work)){+.+.}-{0:0}, at: process_one_work+0x6ec/0x156c kernel/workqueue.c:3212 #2: ffff80008f508920 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0x10/0x4c include/linux/rcupdate.h:330 CPU: 0 UID: 0 PID: 304 Comm: kworker/u8:6 Not tainted 6.15.0-rc7-syzkaller-00085-gd7fa1af5b33e #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+0x30/0x40 lib/dump_stack.c:94 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 __might_resched+0x348/0x4c4 kernel/sched/core.c:8818 __might_sleep+0x94/0x110 kernel/sched/core.c:8747 down_read+0x30/0x2f8 kernel/locking/rwsem.c:1523 wireless_nlevent_flush net/wireless/wext-core.c:351 [inline] wext_netdev_notifier_call+0x30/0x110 net/wireless/wext-core.c:371 notifier_call_chain+0x1b8/0x4e4 kernel/notifier.c:85 raw_notifier_call_chain+0x3c/0x50 kernel/notifier.c:453 call_netdevice_notifiers_info net/core/dev.c:2176 [inline] netif_state_change+0x2b8/0x3fc net/core/dev.c:1530 linkwatch_do_dev+0x108/0x1a8 net/core/link_watch.c:186 __linkwatch_sync_dev+0x28c/0x314 net/core/link_watch.c:282 ethtool_op_get_link+0x20/0x68 net/ethtool/ioctl.c:63 bond_check_dev_link+0x338/0x560 drivers/net/bonding/bond_main.c:866 bond_miimon_inspect drivers/net/bonding/bond_main.c:2739 [inline] bond_mii_monitor+0x3a0/0x2658 drivers/net/bonding/bond_main.c:2961 process_one_work+0x7e8/0x156c kernel/workqueue.c:3238 process_scheduled_works kernel/workqueue.c:3319 [inline] worker_thread+0x958/0xed8 kernel/workqueue.c:3400 kthread+0x5fc/0x75c kernel/kthread.c:464 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:847 ============================= [ BUG: Invalid wait context ] 6.15.0-rc7-syzkaller-00085-gd7fa1af5b33e #0 Tainted: G W ----------------------------- kworker/u8:6/304 is trying to lock: ffff800092481d90 (net_rwsem){++++}-{4:4}, at: wireless_nlevent_flush net/wireless/wext-core.c:351 [inline] ffff800092481d90 (net_rwsem){++++}-{4:4}, at: wext_netdev_notifier_call+0x30/0x110 net/wireless/wext-core.c:371 other info that might help us debug this: context-{5:5} 3 locks held by kworker/u8:6/304: #0: ffff0000cc314948 ((wq_completion)bond0#2){+.+.}-{0:0}, at: process_one_work+0x658/0x156c kernel/workqueue.c:3212 #1: ffff80009bac7bc0 ((work_completion)(&(&bond->mii_work)->work)){+.+.}-{0:0}, at: process_one_work+0x6ec/0x156c kernel/workqueue.c:3212 #2: ffff80008f508920 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0x10/0x4c include/linux/rcupdate.h:330 stack backtrace: CPU: 0 UID: 0 PID: 304 Comm: kworker/u8:6 Tainted: G W 6.15.0-rc7-syzkaller-00085-gd7fa1af5b33e #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+0x30/0x40 lib/dump_stack.c:94 dump_stack_lvl+0xd8/0x12c 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+0xaa0/0x3058 kernel/locking/lockdep.c:5185 lock_acquire+0x14c/0x2e0 kernel/locking/lockdep.c:5866 down_read+0x58/0x2f8 kernel/locking/rwsem.c:1524 wireless_nlevent_flush net/wireless/wext-core.c:351 [inline] wext_netdev_notifier_call+0x30/0x110 net/wireless/wext-core.c:371 notifier_call_chain+0x1b8/0x4e4 kernel/notifier.c:85 raw_notifier_call_chain+0x3c/0x50 kernel/notifier.c:453 call_netdevice_notifiers_info net/core/dev.c:2176 [inline] netif_state_change+0x2b8/0x3fc net/core/dev.c:1530 linkwatch_do_dev+0x108/0x1a8 net/core/link_watch.c:186 __linkwatch_sync_dev+0x28c/0x314 net/core/link_watch.c:282 ethtool_op_get_link+0x20/0x68 net/ethtool/ioctl.c:63 bond_check_dev_link+0x338/0x560 drivers/net/bonding/bond_main.c:866 bond_miimon_inspect drivers/net/bonding/bond_main.c:2739 [inline] bond_mii_monitor+0x3a0/0x2658 drivers/net/bonding/bond_main.c:2961 process_one_work+0x7e8/0x156c kernel/workqueue.c:3238 process_scheduled_works kernel/workqueue.c:3319 [inline] worker_thread+0x958/0xed8 kernel/workqueue.c:3400 kthread+0x5fc/0x75c kernel/kthread.c:464 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:847