============================= WARNING: suspicious RCU usage 6.14.0-rc6-syzkaller-ga5618886fdab #0 Not tainted ----------------------------- net/sched/sch_generic.c:1251 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/u8:5/325: #0: ffff0000eeb7c148 ((wq_completion)bond0#3){+.+.}-{0:0}, at: process_one_work+0x674/0x1638 kernel/workqueue.c:3212 #1: ffff80009c3b7ba0 ((work_completion)(&(&bond->mii_work)->work)){+.+.}-{0:0}, at: process_one_work+0x708/0x1638 kernel/workqueue.c:3212 #2: ffff80008fda2620 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0x10/0x4c include/linux/rcupdate.h:336 stack backtrace: CPU: 0 UID: 0 PID: 325 Comm: kworker/u8:5 Not tainted 6.14.0-rc6-syzkaller-ga5618886fdab #0 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+0x264/0x46c kernel/locking/lockdep.c:6847 dev_activate+0x108/0x105c net/sched/sch_generic.c:1251 linkwatch_do_dev+0xf0/0x1a8 net/core/link_watch.c:182 linkwatch_sync_dev+0x150/0x16c net/core/link_watch.c:272 ethtool_op_get_link+0x20/0x5c net/ethtool/ioctl.c:62 bond_check_dev_link+0x1ac/0x3f4 drivers/net/bonding/bond_main.c:873 bond_miimon_inspect drivers/net/bonding/bond_main.c:2740 [inline] bond_mii_monitor+0x3d8/0x28b4 drivers/net/bonding/bond_main.c:2962 process_one_work+0x810/0x1638 kernel/workqueue.c:3238 process_scheduled_works kernel/workqueue.c:3319 [inline] worker_thread+0x97c/0xeec kernel/workqueue.c:3400 kthread+0x65c/0x7b0 kernel/kthread.c:464 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:862 ============================= WARNING: suspicious RCU usage 6.14.0-rc6-syzkaller-ga5618886fdab #0 Not tainted ----------------------------- net/sched/sch_generic.c:1229 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/u8:5/325: #0: ffff0000eeb7c148 ((wq_completion)bond0#3){+.+.}-{0:0}, at: process_one_work+0x674/0x1638 kernel/workqueue.c:3212 #1: ffff80009c3b7ba0 ((work_completion)(&(&bond->mii_work)->work)){+.+.}-{0:0}, at: process_one_work+0x708/0x1638 kernel/workqueue.c:3212 #2: ffff80008fda2620 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0x10/0x4c include/linux/rcupdate.h:336 stack backtrace: CPU: 0 UID: 0 PID: 325 Comm: kworker/u8:5 Not tainted 6.14.0-rc6-syzkaller-ga5618886fdab #0 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+0x264/0x46c kernel/locking/lockdep.c:6847 transition_one_qdisc+0xb0/0x1e8 net/sched/sch_generic.c:1229 netdev_for_each_tx_queue include/linux/netdevice.h:2590 [inline] dev_activate+0x728/0x105c net/sched/sch_generic.c:1259 linkwatch_do_dev+0xf0/0x1a8 net/core/link_watch.c:182 linkwatch_sync_dev+0x150/0x16c net/core/link_watch.c:272 ethtool_op_get_link+0x20/0x5c net/ethtool/ioctl.c:62 bond_check_dev_link+0x1ac/0x3f4 drivers/net/bonding/bond_main.c:873 bond_miimon_inspect drivers/net/bonding/bond_main.c:2740 [inline] bond_mii_monitor+0x3d8/0x28b4 drivers/net/bonding/bond_main.c:2962 process_one_work+0x810/0x1638 kernel/workqueue.c:3238 process_scheduled_works kernel/workqueue.c:3319 [inline] worker_thread+0x97c/0xeec kernel/workqueue.c:3400 kthread+0x65c/0x7b0 kernel/kthread.c:464 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:862 ============================= WARNING: suspicious RCU usage 6.14.0-rc6-syzkaller-ga5618886fdab #0 Not tainted ----------------------------- ./include/linux/rtnetlink.h:162 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/u8:5/325: #0: ffff0000eeb7c148 ((wq_completion)bond0#3){+.+.}-{0:0}, at: process_one_work+0x674/0x1638 kernel/workqueue.c:3212 #1: ffff80009c3b7ba0 ((work_completion)(&(&bond->mii_work)->work)){+.+.}-{0:0}, at: process_one_work+0x708/0x1638 kernel/workqueue.c:3212 #2: ffff80008fda2620 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0x10/0x4c include/linux/rcupdate.h:336 stack backtrace: CPU: 0 UID: 0 PID: 325 Comm: kworker/u8:5 Not tainted 6.14.0-rc6-syzkaller-ga5618886fdab #0 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+0x264/0x46c kernel/locking/lockdep.c:6847 dev_ingress_queue include/linux/rtnetlink.h:162 [inline] dev_activate+0x814/0x105c net/sched/sch_generic.c:1260 linkwatch_do_dev+0xf0/0x1a8 net/core/link_watch.c:182 linkwatch_sync_dev+0x150/0x16c net/core/link_watch.c:272 ethtool_op_get_link+0x20/0x5c net/ethtool/ioctl.c:62 bond_check_dev_link+0x1ac/0x3f4 drivers/net/bonding/bond_main.c:873 bond_miimon_inspect drivers/net/bonding/bond_main.c:2740 [inline] bond_mii_monitor+0x3d8/0x28b4 drivers/net/bonding/bond_main.c:2962 process_one_work+0x810/0x1638 kernel/workqueue.c:3238 process_scheduled_works kernel/workqueue.c:3319 [inline] worker_thread+0x97c/0xeec kernel/workqueue.c:3400 kthread+0x65c/0x7b0 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: 325, name: kworker/u8:5 preempt_count: 0, expected: 0 RCU nest depth: 1, expected: 0 3 locks held by kworker/u8:5/325: #0: ffff0000eeb7c148 ((wq_completion)bond0#3){+.+.}-{0:0}, at: process_one_work+0x674/0x1638 kernel/workqueue.c:3212 #1: ffff80009c3b7ba0 ((work_completion)(&(&bond->mii_work)->work)){+.+.}-{0:0}, at: process_one_work+0x708/0x1638 kernel/workqueue.c:3212 #2: ffff80008fda2620 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0x10/0x4c include/linux/rcupdate.h:336 CPU: 0 UID: 0 PID: 325 Comm: kworker/u8:5 Not tainted 6.14.0-rc6-syzkaller-ga5618886fdab #0 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:8767 __might_sleep+0x90/0xe4 kernel/sched/core.c:8696 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:2206 [inline] netdev_state_change+0x184/0x238 net/core/dev.c:1537 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:62 bond_check_dev_link+0x1ac/0x3f4 drivers/net/bonding/bond_main.c:873 bond_miimon_inspect drivers/net/bonding/bond_main.c:2740 [inline] bond_mii_monitor+0x3d8/0x28b4 drivers/net/bonding/bond_main.c:2962 process_one_work+0x810/0x1638 kernel/workqueue.c:3238 process_scheduled_works kernel/workqueue.c:3319 [inline] worker_thread+0x97c/0xeec kernel/workqueue.c:3400 kthread+0x65c/0x7b0 kernel/kthread.c:464 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:862 ============================= [ BUG: Invalid wait context ] 6.14.0-rc6-syzkaller-ga5618886fdab #0 Tainted: G W ----------------------------- kworker/u8:5/325 is trying to lock: ffff800092b65f10 (net_rwsem){++++}-{4:4}, at: wireless_nlevent_flush net/wireless/wext-core.c:351 [inline] ffff800092b65f10 (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/u8:5/325: #0: ffff0000eeb7c148 ((wq_completion)bond0#3){+.+.}-{0:0}, at: process_one_work+0x674/0x1638 kernel/workqueue.c:3212 #1: ffff80009c3b7ba0 ((work_completion)(&(&bond->mii_work)->work)){+.+.}-{0:0}, at: process_one_work+0x708/0x1638 kernel/workqueue.c:3212 #2: ffff80008fda2620 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0x10/0x4c include/linux/rcupdate.h:336 stack backtrace: CPU: 0 UID: 0 PID: 325 Comm: kworker/u8:5 Tainted: G W 6.14.0-rc6-syzkaller-ga5618886fdab #0 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:4828 [inline] check_wait_context kernel/locking/lockdep.c:4900 [inline] __lock_acquire+0x2034/0x7904 kernel/locking/lockdep.c:5178 lock_acquire+0x23c/0x724 kernel/locking/lockdep.c:5851 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:2206 [inline] netdev_state_change+0x184/0x238 net/core/dev.c:1537 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:62 bond_check_dev_link+0x1ac/0x3f4 drivers/net/bonding/bond_main.c:873 bond_miimon_inspect drivers/net/bonding/bond_main.c:2740 [inline] bond_mii_monitor+0x3d8/0x28b4 drivers/net/bonding/bond_main.c:2962 process_one_work+0x810/0x1638 kernel/workqueue.c:3238 process_scheduled_works kernel/workqueue.c:3319 [inline] worker_thread+0x97c/0xeec kernel/workqueue.c:3400 kthread+0x65c/0x7b0 kernel/kthread.c:464 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:862