============================= WARNING: suspicious RCU usage 6.16.0-rc7-syzkaller-00100-gafd8c2c9e2e2 #0 Not tainted ----------------------------- net/sched/sch_generic.c:1286 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/u8:7/3528: #0: ffff88807e471948 ((wq_completion)bond0){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline] #0: ffff88807e471948 ((wq_completion)bond0){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0 kernel/workqueue.c:3321 #1: ffffc9000c6b7bc0 ((work_completion)(&(&bond->mii_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline] #1: ffffc9000c6b7bc0 ((work_completion)(&(&bond->mii_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0 kernel/workqueue.c:3321 #2: ffffffff8e13f0e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline] #2: ffffffff8e13f0e0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline] #2: ffffffff8e13f0e0 (rcu_read_lock){....}-{1:3}, at: bond_mii_monitor+0x153/0x2e00 drivers/net/bonding/bond_main.c:2965 stack backtrace: CPU: 1 UID: 0 PID: 3528 Comm: kworker/u8:7 Not tainted 6.16.0-rc7-syzkaller-00100-gafd8c2c9e2e2 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 Workqueue: bond0 bond_mii_monitor Call Trace: dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 lockdep_rcu_suspicious+0x140/0x1d0 kernel/locking/lockdep.c:6871 dev_deactivate_queue+0x8f/0x1b0 net/sched/sch_generic.c:1286 netdev_for_each_tx_queue include/linux/netdevice.h:2655 [inline] dev_deactivate_many+0xd3/0xd40 net/sched/sch_generic.c:1362 dev_deactivate+0x118/0x1b0 net/sched/sch_generic.c:1399 linkwatch_do_dev+0x10f/0x170 net/core/link_watch.c:184 ethtool_op_get_link+0x15/0x70 net/ethtool/ioctl.c:63 bond_check_dev_link+0x444/0x6c0 drivers/net/bonding/bond_main.c:863 bond_miimon_inspect drivers/net/bonding/bond_main.c:2745 [inline] bond_mii_monitor+0x428/0x2e00 drivers/net/bonding/bond_main.c:2967 process_one_work kernel/workqueue.c:3238 [inline] process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3321 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3402 kthread+0x70e/0x8a0 kernel/kthread.c:464 ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 ============================= WARNING: suspicious RCU usage 6.16.0-rc7-syzkaller-00100-gafd8c2c9e2e2 #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/u8:7/3528: #0: ffff88807e471948 ((wq_completion)bond0){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline] #0: ffff88807e471948 ((wq_completion)bond0){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0 kernel/workqueue.c:3321 #1: ffffc9000c6b7bc0 ((work_completion)(&(&bond->mii_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline] #1: ffffc9000c6b7bc0 ((work_completion)(&(&bond->mii_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0 kernel/workqueue.c:3321 #2: ffffffff8e13f0e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline] #2: ffffffff8e13f0e0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline] #2: ffffffff8e13f0e0 (rcu_read_lock){....}-{1:3}, at: bond_mii_monitor+0x153/0x2e00 drivers/net/bonding/bond_main.c:2965 stack backtrace: CPU: 1 UID: 0 PID: 3528 Comm: kworker/u8:7 Not tainted 6.16.0-rc7-syzkaller-00100-gafd8c2c9e2e2 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 Workqueue: bond0 bond_mii_monitor Call Trace: dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 lockdep_rcu_suspicious+0x140/0x1d0 kernel/locking/lockdep.c:6871 dev_ingress_queue include/linux/rtnetlink.h:163 [inline] dev_deactivate_many+0x197/0xd40 net/sched/sch_generic.c:1364 dev_deactivate+0x118/0x1b0 net/sched/sch_generic.c:1399 linkwatch_do_dev+0x10f/0x170 net/core/link_watch.c:184 ethtool_op_get_link+0x15/0x70 net/ethtool/ioctl.c:63 bond_check_dev_link+0x444/0x6c0 drivers/net/bonding/bond_main.c:863 bond_miimon_inspect drivers/net/bonding/bond_main.c:2745 [inline] bond_mii_monitor+0x428/0x2e00 drivers/net/bonding/bond_main.c:2967 process_one_work kernel/workqueue.c:3238 [inline] process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3321 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3402 kthread+0x70e/0x8a0 kernel/kthread.c:464 ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 ============================= WARNING: suspicious RCU usage 6.16.0-rc7-syzkaller-00100-gafd8c2c9e2e2 #0 Not tainted ----------------------------- net/sched/sch_generic.c:1302 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/u8:7/3528: #0: ffff88807e471948 ((wq_completion)bond0){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline] #0: ffff88807e471948 ((wq_completion)bond0){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0 kernel/workqueue.c:3321 #1: ffffc9000c6b7bc0 ((work_completion)(&(&bond->mii_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline] #1: ffffc9000c6b7bc0 ((work_completion)(&(&bond->mii_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0 kernel/workqueue.c:3321 #2: ffffffff8e13f0e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline] #2: ffffffff8e13f0e0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline] #2: ffffffff8e13f0e0 (rcu_read_lock){....}-{1:3}, at: bond_mii_monitor+0x153/0x2e00 drivers/net/bonding/bond_main.c:2965 stack backtrace: CPU: 0 UID: 0 PID: 3528 Comm: kworker/u8:7 Not tainted 6.16.0-rc7-syzkaller-00100-gafd8c2c9e2e2 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 Workqueue: bond0 bond_mii_monitor Call Trace: dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 lockdep_rcu_suspicious+0x140/0x1d0 kernel/locking/lockdep.c:6871 dev_reset_queue+0x88/0x1b0 net/sched/sch_generic.c:1302 netdev_for_each_tx_queue include/linux/netdevice.h:2655 [inline] dev_deactivate_many+0x720/0xd40 net/sched/sch_generic.c:1376 dev_deactivate+0x118/0x1b0 net/sched/sch_generic.c:1399 linkwatch_do_dev+0x10f/0x170 net/core/link_watch.c:184 ethtool_op_get_link+0x15/0x70 net/ethtool/ioctl.c:63 bond_check_dev_link+0x444/0x6c0 drivers/net/bonding/bond_main.c:863 bond_miimon_inspect drivers/net/bonding/bond_main.c:2745 [inline] bond_mii_monitor+0x428/0x2e00 drivers/net/bonding/bond_main.c:2967 process_one_work kernel/workqueue.c:3238 [inline] process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3321 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3402 kthread+0x70e/0x8a0 kernel/kthread.c:464 ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 ============================= WARNING: suspicious RCU usage 6.16.0-rc7-syzkaller-00100-gafd8c2c9e2e2 #0 Not tainted ----------------------------- net/sched/sch_generic.c:1333 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/u8:7/3528: #0: ffff88807e471948 ((wq_completion)bond0){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline] #0: ffff88807e471948 ((wq_completion)bond0){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0 kernel/workqueue.c:3321 #1: ffffc9000c6b7bc0 ((work_completion)(&(&bond->mii_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline] #1: ffffc9000c6b7bc0 ((work_completion)(&(&bond->mii_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0 kernel/workqueue.c:3321 #2: ffffffff8e13f0e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline] #2: ffffffff8e13f0e0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline] #2: ffffffff8e13f0e0 (rcu_read_lock){....}-{1:3}, at: bond_mii_monitor+0x153/0x2e00 drivers/net/bonding/bond_main.c:2965 stack backtrace: CPU: 0 UID: 0 PID: 3528 Comm: kworker/u8:7 Not tainted 6.16.0-rc7-syzkaller-00100-gafd8c2c9e2e2 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 Workqueue: bond0 bond_mii_monitor Call Trace: dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 lockdep_rcu_suspicious+0x140/0x1d0 kernel/locking/lockdep.c:6871 some_qdisc_is_busy net/sched/sch_generic.c:1333 [inline] dev_deactivate_many+0xa22/0xd40 net/sched/sch_generic.c:1384 dev_deactivate+0x118/0x1b0 net/sched/sch_generic.c:1399 linkwatch_do_dev+0x10f/0x170 net/core/link_watch.c:184 ethtool_op_get_link+0x15/0x70 net/ethtool/ioctl.c:63 bond_check_dev_link+0x444/0x6c0 drivers/net/bonding/bond_main.c:863 bond_miimon_inspect drivers/net/bonding/bond_main.c:2745 [inline] bond_mii_monitor+0x428/0x2e00 drivers/net/bonding/bond_main.c:2967 process_one_work kernel/workqueue.c:3238 [inline] process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3321 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3402 kthread+0x70e/0x8a0 kernel/kthread.c:464 ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 ------------[ cut here ]------------ RTNL: assertion failed at ./include/net/netdev_lock.h (72) WARNING: CPU: 1 PID: 3528 at ./include/net/netdev_lock.h:72 netdev_ops_assert_locked include/net/netdev_lock.h:72 [inline] WARNING: CPU: 1 PID: 3528 at ./include/net/netdev_lock.h:72 netdev_ops_assert_locked_or_invisible include/net/netdev_lock.h:80 [inline] WARNING: CPU: 1 PID: 3528 at ./include/net/netdev_lock.h:72 netif_state_change+0x317/0x3a0 net/core/dev.c:1577 Modules linked in: CPU: 1 UID: 0 PID: 3528 Comm: kworker/u8:7 Not tainted 6.16.0-rc7-syzkaller-00100-gafd8c2c9e2e2 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 Workqueue: bond0 bond_mii_monitor RIP: 0010:netdev_ops_assert_locked include/net/netdev_lock.h:72 [inline] RIP: 0010:netdev_ops_assert_locked_or_invisible include/net/netdev_lock.h:80 [inline] RIP: 0010:netif_state_change+0x317/0x3a0 net/core/dev.c:1577 Code: 2f ff ff ff e8 8a 3d 6c f8 c6 05 88 eb 37 06 01 90 48 c7 c7 40 cc 92 8c 48 c7 c6 3a e6 9d 8d ba 48 00 00 00 e8 da 2c 30 f8 90 <0f> 0b 90 90 e9 00 ff ff ff 44 89 f1 80 e1 07 38 c1 0f 8c 67 fd ff RSP: 0018:ffffc9000c6b75a0 EFLAGS: 00010246 RAX: 62e45a83596dc100 RBX: ffff888064056000 RCX: ffff888031370000 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000002 RBP: ffffc9000c6b7670 R08: 0000000000000003 R09: 0000000000000004 R10: dffffc0000000000 R11: fffffbfff1bfaa6c R12: 0000000000000000 R13: 1ffff920018d6eb8 R14: 0000000000000000 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff888125d23000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f50a84fea10 CR3: 00000000336d8000 CR4: 00000000003526f0 Call Trace: linkwatch_do_dev+0x117/0x170 net/core/link_watch.c:186 ethtool_op_get_link+0x15/0x70 net/ethtool/ioctl.c:63 bond_check_dev_link+0x444/0x6c0 drivers/net/bonding/bond_main.c:863 bond_miimon_inspect drivers/net/bonding/bond_main.c:2745 [inline] bond_mii_monitor+0x428/0x2e00 drivers/net/bonding/bond_main.c:2967 process_one_work kernel/workqueue.c:3238 [inline] process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3321 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3402 kthread+0x70e/0x8a0 kernel/kthread.c:464 ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245