============================= WARNING: suspicious RCU usage 6.12.0-rc7-syzkaller-00070-g0a9b9d17f3a7 #0 Not tainted ----------------------------- net/sched/sch_generic.c:1290 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/u32:27/12905: #0: ffff88803322d148 ((wq_completion)bond0#10){+.+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204 #1: ffffc90003cffd80 ((work_completion)(&(&bond->mii_work)->work)){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205 #2: ffffffff8e1b8340 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline] #2: ffffffff8e1b8340 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #2: ffffffff8e1b8340 (rcu_read_lock){....}-{1:2}, at: bond_mii_monitor+0x140/0x2d90 drivers/net/bonding/bond_main.c:2937 stack backtrace: CPU: 1 UID: 0 PID: 12905 Comm: kworker/u32:27 Not tainted 6.12.0-rc7-syzkaller-00070-g0a9b9d17f3a7 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 Workqueue: bond0 bond_mii_monitor Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x16c/0x1f0 lib/dump_stack.c:120 lockdep_rcu_suspicious+0x210/0x3c0 kernel/locking/lockdep.c:6821 dev_deactivate_queue+0x167/0x190 net/sched/sch_generic.c:1290 netdev_for_each_tx_queue include/linux/netdevice.h:2504 [inline] dev_deactivate_many+0xe7/0xb20 net/sched/sch_generic.c:1363 dev_deactivate+0xf9/0x1c0 net/sched/sch_generic.c:1403 linkwatch_do_dev+0x11e/0x160 net/core/link_watch.c:175 linkwatch_sync_dev+0x181/0x210 net/core/link_watch.c:263 ethtool_op_get_link+0x1d/0x70 net/ethtool/ioctl.c:62 bond_check_dev_link+0x197/0x490 drivers/net/bonding/bond_main.c:873 bond_miimon_inspect drivers/net/bonding/bond_main.c:2717 [inline] bond_mii_monitor+0x3c1/0x2d90 drivers/net/bonding/bond_main.c:2939 process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3229 process_scheduled_works kernel/workqueue.c:3310 [inline] worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391 kthread+0x2c1/0x3a0 kernel/kthread.c:389 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 ============================= WARNING: suspicious RCU usage 6.12.0-rc7-syzkaller-00070-g0a9b9d17f3a7 #0 Not tainted ----------------------------- include/linux/rtnetlink.h:100 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/u32:27/12905: #0: ffff88803322d148 ((wq_completion)bond0#10){+.+.}-{0:0}, at: process_one_work+0x129b/0x1ba0 kernel/workqueue.c:3204 #1: ffffc90003cffd80 ((work_completion)(&(&bond->mii_work)->work)){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205 #2: ffffffff8e1b8340 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline] #2: ffffffff8e1b8340 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #2: ffffffff8e1b8340 (rcu_read_lock){....}-{1:2}, at: bond_mii_monitor+0x140/0x2d90 drivers/net/bonding/bond_main.c:2937 stack backtrace: CPU: 1 UID: 0 PID: 12905 Comm: kworker/u32:27 Not tainted 6.12.0-rc7-syzkaller-00070-g0a9b9d17f3a7 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 Workqueue: bond0 bond_mii_monitor Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x16c/0x1f0 lib/dump_stack.c:120 lockdep_rcu_suspicious+0x210/0x3c0 kernel/locking/lockdep.c:6821 dev_ingress_queue include/linux/rtnetlink.h:100 [inline] dev_deactivate_many+0x8af/0xb20 net/sched/sch_generic.c:1365 dev_deactivate+0xf9/0x1c0 net/sched/sch_generic.c:1403 linkwatch_do_dev+0x11e/0x160 net/core/link_watch.c:175 linkwatch_sync_dev+0x181/0x210 net/core/link_watch.c:263 ethtool_op_get_link+0x1d/0x70 net/ethtool/ioctl.c:62 bond_check_dev_link+0x197/0x490 drivers/net/bonding/bond_main.c:873 bond_miimon_inspect drivers/net/bonding/bond_main.c:2717 [inline] bond_mii_monitor+0x3c1/0x2d90 drivers/net/bonding/bond_main.c:2939 process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3229 process_scheduled_works kernel/workqueue.c:3310 [inline] worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391 kthread+0x2c1/0x3a0 kernel/kthread.c:389 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 INFO: trying to register non-static key. The code is fine but needs lockdep annotation, or maybe you didn't initialize this object before use? turning off the locking correctness validator. CPU: 1 UID: 0 PID: 12905 Comm: kworker/u32:27 Not tainted 6.12.0-rc7-syzkaller-00070-g0a9b9d17f3a7 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 Workqueue: bond0 bond_mii_monitor Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120 assign_lock_key kernel/locking/lockdep.c:981 [inline] register_lock_class+0xc39/0x1240 kernel/locking/lockdep.c:1295 __lock_acquire+0x135/0x3ce0 kernel/locking/lockdep.c:5077 lock_acquire.part.0+0x11b/0x380 kernel/locking/lockdep.c:5825 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline] _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154 spin_lock include/linux/spinlock.h:351 [inline] netif_tx_lock net/sched/sch_generic.c:468 [inline] netif_tx_lock_bh include/linux/netdevice.h:4455 [inline] dev_watchdog_down net/sched/sch_generic.c:574 [inline] dev_deactivate_many+0x1c4/0xb20 net/sched/sch_generic.c:1369 dev_deactivate+0xf9/0x1c0 net/sched/sch_generic.c:1403 linkwatch_do_dev+0x11e/0x160 net/core/link_watch.c:175 linkwatch_sync_dev+0x181/0x210 net/core/link_watch.c:263 ethtool_op_get_link+0x1d/0x70 net/ethtool/ioctl.c:62 bond_check_dev_link+0x197/0x490 drivers/net/bonding/bond_main.c:873 bond_miimon_inspect drivers/net/bonding/bond_main.c:2717 [inline] bond_mii_monitor+0x3c1/0x2d90 drivers/net/bonding/bond_main.c:2939 process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3229 process_scheduled_works kernel/workqueue.c:3310 [inline] worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391 kthread+0x2c1/0x3a0 kernel/kthread.c:389 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 ------------[ cut here ]------------ ODEBUG: assert_init not available (active state 0) object: ffffc9000d0176c0 object type: timer_list hint: kallsyms_seqs_of_names+0x3358bc/0x4500f0 WARNING: CPU: 1 PID: 12905 at lib/debugobjects.c:514 debug_print_object+0x1a3/0x2b0 lib/debugobjects.c:514 Modules linked in: CPU: 1 UID: 0 PID: 12905 Comm: kworker/u32:27 Not tainted 6.12.0-rc7-syzkaller-00070-g0a9b9d17f3a7 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 Workqueue: bond0 bond_mii_monitor RIP: 0010:debug_print_object+0x1a3/0x2b0 lib/debugobjects.c:514 Code: fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 75 54 48 8b 14 dd c0 c6 d1 8b 41 56 4c 89 e6 48 c7 c7 20 ba d1 8b e8 ce 71 b8 fc 90 <0f> 0b 90 90 58 83 05 8d 93 c9 0b 01 48 83 c4 18 5b 5d 41 5c 41 5d RSP: 0018:ffffc90003cff738 EFLAGS: 00010286 RAX: 0000000000000000 RBX: 0000000000000005 RCX: ffffffff814e6e79 RDX: ffff88805a752440 RSI: ffffffff814e6e86 RDI: 0000000000000001 RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 203a47554245444f R12: ffffffff8bd1c100 R13: ffffffff8b6f76c0 R14: ffffffff8d93898c R15: ffffc90003cff7f8 FS: 0000000000000000(0000) GS:ffff88806a700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f6492bead58 CR3: 000000000df7c000 CR4: 0000000000352ef0 Call Trace: debug_object_assert_init+0x249/0x370 lib/debugobjects.c:910 debug_timer_assert_init kernel/time/timer.c:846 [inline] debug_assert_init kernel/time/timer.c:891 [inline] __timer_delete+0x81/0x1c0 kernel/time/timer.c:1413 del_timer include/linux/timer.h:202 [inline] dev_watchdog_down net/sched/sch_generic.c:575 [inline] dev_deactivate_many+0x1d8/0xb20 net/sched/sch_generic.c:1369 dev_deactivate+0xf9/0x1c0 net/sched/sch_generic.c:1403 linkwatch_do_dev+0x11e/0x160 net/core/link_watch.c:175 linkwatch_sync_dev+0x181/0x210 net/core/link_watch.c:263 ethtool_op_get_link+0x1d/0x70 net/ethtool/ioctl.c:62 bond_check_dev_link+0x197/0x490 drivers/net/bonding/bond_main.c:873 bond_miimon_inspect drivers/net/bonding/bond_main.c:2717 [inline] bond_mii_monitor+0x3c1/0x2d90 drivers/net/bonding/bond_main.c:2939 process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3229 process_scheduled_works kernel/workqueue.c:3310 [inline] worker_thread+0x6c8/0xf00 kernel/workqueue.c:3391 kthread+0x2c1/0x3a0 kernel/kthread.c:389 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244