=============================
WARNING: suspicious RCU usage
6.15.0-rc5-syzkaller-00136-g4d64321c4f6f #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/u8:6/1100:
#0: ffff88806f0ad148 ((wq_completion)bond0){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline]
#0: ffff88806f0ad148 ((wq_completion)bond0){+.+.}-{0:0}, at: process_scheduled_works+0x9b1/0x17a0 kernel/workqueue.c:3319
#1: ffffc90003d27c60 ((work_completion)(&(&bond->mii_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline]
#1: ffffc90003d27c60 ((work_completion)(&(&bond->mii_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ec/0x17a0 kernel/workqueue.c:3319
#2: ffffffff8df3b860 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
#2: ffffffff8df3b860 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline]
#2: ffffffff8df3b860 (rcu_read_lock){....}-{1:3}, at: bond_mii_monitor+0x153/0x2e00 drivers/net/bonding/bond_main.c:2959
stack backtrace:
CPU: 1 UID: 0 PID: 1100 Comm: kworker/u8:6 Not tainted 6.15.0-rc5-syzkaller-00136-g4d64321c4f6f #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
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:6865
dev_deactivate_queue+0x8f/0x1b0 net/sched/sch_generic.c:1285
netdev_for_each_tx_queue include/linux/netdevice.h:2650 [inline]
dev_deactivate_many+0xd3/0xd40 net/sched/sch_generic.c:1361
dev_deactivate+0x118/0x1b0 net/sched/sch_generic.c:1398
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:866
bond_miimon_inspect drivers/net/bonding/bond_main.c:2739 [inline]
bond_mii_monitor+0x428/0x2e00 drivers/net/bonding/bond_main.c:2961
process_one_work kernel/workqueue.c:3238 [inline]
process_scheduled_works+0xadb/0x17a0 kernel/workqueue.c:3319
worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400
kthread+0x70e/0x8a0 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
=============================
WARNING: suspicious RCU usage
6.15.0-rc5-syzkaller-00136-g4d64321c4f6f #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/u8:6/1100:
#0: ffff88806f0ad148 ((wq_completion)bond0){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline]
#0: ffff88806f0ad148 ((wq_completion)bond0){+.+.}-{0:0}, at: process_scheduled_works+0x9b1/0x17a0 kernel/workqueue.c:3319
#1: ffffc90003d27c60 ((work_completion)(&(&bond->mii_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline]
#1: ffffc90003d27c60 ((work_completion)(&(&bond->mii_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ec/0x17a0 kernel/workqueue.c:3319
#2: ffffffff8df3b860 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
#2: ffffffff8df3b860 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline]
#2: ffffffff8df3b860 (rcu_read_lock){....}-{1:3}, at: bond_mii_monitor+0x153/0x2e00 drivers/net/bonding/bond_main.c:2959
stack backtrace:
CPU: 1 UID: 0 PID: 1100 Comm: kworker/u8:6 Not tainted 6.15.0-rc5-syzkaller-00136-g4d64321c4f6f #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
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:6865
dev_ingress_queue include/linux/rtnetlink.h:163 [inline]
dev_deactivate_many+0x197/0xd40 net/sched/sch_generic.c:1363
dev_deactivate+0x118/0x1b0 net/sched/sch_generic.c:1398
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:866
bond_miimon_inspect drivers/net/bonding/bond_main.c:2739 [inline]
bond_mii_monitor+0x428/0x2e00 drivers/net/bonding/bond_main.c:2961
process_one_work kernel/workqueue.c:3238 [inline]
process_scheduled_works+0xadb/0x17a0 kernel/workqueue.c:3319
worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400
kthread+0x70e/0x8a0 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
=============================
WARNING: suspicious RCU usage
6.15.0-rc5-syzkaller-00136-g4d64321c4f6f #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/u8:6/1100:
#0: ffff88806f0ad148 ((wq_completion)bond0){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline]
#0: ffff88806f0ad148 ((wq_completion)bond0){+.+.}-{0:0}, at: process_scheduled_works+0x9b1/0x17a0 kernel/workqueue.c:3319
#1: ffffc90003d27c60 ((work_completion)(&(&bond->mii_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline]
#1: ffffc90003d27c60 ((work_completion)(&(&bond->mii_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ec/0x17a0 kernel/workqueue.c:3319
#2: ffffffff8df3b860 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
#2: ffffffff8df3b860 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline]
#2: ffffffff8df3b860 (rcu_read_lock){....}-{1:3}, at: bond_mii_monitor+0x153/0x2e00 drivers/net/bonding/bond_main.c:2959
stack backtrace:
CPU: 1 UID: 0 PID: 1100 Comm: kworker/u8:6 Not tainted 6.15.0-rc5-syzkaller-00136-g4d64321c4f6f #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
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:6865
dev_reset_queue+0x88/0x1b0 net/sched/sch_generic.c:1301
netdev_for_each_tx_queue include/linux/netdevice.h:2650 [inline]
dev_deactivate_many+0x720/0xd40 net/sched/sch_generic.c:1375
dev_deactivate+0x118/0x1b0 net/sched/sch_generic.c:1398
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:866
bond_miimon_inspect drivers/net/bonding/bond_main.c:2739 [inline]
bond_mii_monitor+0x428/0x2e00 drivers/net/bonding/bond_main.c:2961
process_one_work kernel/workqueue.c:3238 [inline]
process_scheduled_works+0xadb/0x17a0 kernel/workqueue.c:3319
worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400
kthread+0x70e/0x8a0 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
=============================
WARNING: suspicious RCU usage
6.15.0-rc5-syzkaller-00136-g4d64321c4f6f #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/u8:6/1100:
#0: ffff88806f0ad148 ((wq_completion)bond0){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline]
#0: ffff88806f0ad148 ((wq_completion)bond0){+.+.}-{0:0}, at: process_scheduled_works+0x9b1/0x17a0 kernel/workqueue.c:3319
#1: ffffc90003d27c60 ((work_completion)(&(&bond->mii_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline]
#1: ffffc90003d27c60 ((work_completion)(&(&bond->mii_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ec/0x17a0 kernel/workqueue.c:3319
#2: ffffffff8df3b860 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
#2: ffffffff8df3b860 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline]
#2: ffffffff8df3b860 (rcu_read_lock){....}-{1:3}, at: bond_mii_monitor+0x153/0x2e00 drivers/net/bonding/bond_main.c:2959
stack backtrace:
CPU: 1 UID: 0 PID: 1100 Comm: kworker/u8:6 Not tainted 6.15.0-rc5-syzkaller-00136-g4d64321c4f6f #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
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:6865
some_qdisc_is_busy net/sched/sch_generic.c:1332 [inline]
dev_deactivate_many+0xa22/0xd40 net/sched/sch_generic.c:1383
dev_deactivate+0x118/0x1b0 net/sched/sch_generic.c:1398
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:866
bond_miimon_inspect drivers/net/bonding/bond_main.c:2739 [inline]
bond_mii_monitor+0x428/0x2e00 drivers/net/bonding/bond_main.c:2961
process_one_work kernel/workqueue.c:3238 [inline]
process_scheduled_works+0xadb/0x17a0 kernel/workqueue.c:3319
worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400
kthread+0x70e/0x8a0 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
BUG: sleeping function called from invalid context at kernel/locking/rwsem.c:1523
in_atomic(): 0, irqs_disabled(): 0, non_block: 0, pid: 1100, name: kworker/u8:6
preempt_count: 0, expected: 0
RCU nest depth: 1, expected: 0
3 locks held by kworker/u8:6/1100:
#0: ffff88806f0ad148 ((wq_completion)bond0){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline]
#0: ffff88806f0ad148 ((wq_completion)bond0){+.+.}-{0:0}, at: process_scheduled_works+0x9b1/0x17a0 kernel/workqueue.c:3319
#1: ffffc90003d27c60 ((work_completion)(&(&bond->mii_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline]
#1: ffffc90003d27c60 ((work_completion)(&(&bond->mii_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ec/0x17a0 kernel/workqueue.c:3319
#2: ffffffff8df3b860 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
#2: ffffffff8df3b860 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline]
#2: ffffffff8df3b860 (rcu_read_lock){....}-{1:3}, at: bond_mii_monitor+0x153/0x2e00 drivers/net/bonding/bond_main.c:2959
CPU: 1 UID: 0 PID: 1100 Comm: kworker/u8:6 Not tainted 6.15.0-rc5-syzkaller-00136-g4d64321c4f6f #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Workqueue: bond0 bond_mii_monitor
Call Trace:
dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
__might_resched+0x495/0x610 kernel/sched/core.c:8818
down_read+0x22/0x2e0 kernel/locking/rwsem.c:1523
wireless_nlevent_flush net/wireless/wext-core.c:351 [inline]
wext_netdev_notifier_call+0x28/0x110 net/wireless/wext-core.c:371
notifier_call_chain+0x1b3/0x3e0 kernel/notifier.c:85
netif_state_change+0x284/0x3a0 net/core/dev.c:1530
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:866
bond_miimon_inspect drivers/net/bonding/bond_main.c:2739 [inline]
bond_mii_monitor+0x428/0x2e00 drivers/net/bonding/bond_main.c:2961
process_one_work kernel/workqueue.c:3238 [inline]
process_scheduled_works+0xadb/0x17a0 kernel/workqueue.c:3319
worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400
kthread+0x70e/0x8a0 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
=============================
[ BUG: Invalid wait context ]
6.15.0-rc5-syzkaller-00136-g4d64321c4f6f #0 Tainted: G W
-----------------------------
kworker/u8:6/1100 is trying to lock:
ffffffff8f2e7c50 (net_rwsem){++++}-{4:4}, at: wireless_nlevent_flush net/wireless/wext-core.c:351 [inline]
ffffffff8f2e7c50 (net_rwsem){++++}-{4:4}, at: wext_netdev_notifier_call+0x28/0x110 net/wireless/wext-core.c:371
other info that might help us debug this:
context-{5:5}
3 locks held by kworker/u8:6/1100:
#0: ffff88806f0ad148 ((wq_completion)bond0){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline]
#0: ffff88806f0ad148 ((wq_completion)bond0){+.+.}-{0:0}, at: process_scheduled_works+0x9b1/0x17a0 kernel/workqueue.c:3319
#1: ffffc90003d27c60 ((work_completion)(&(&bond->mii_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline]
#1: ffffc90003d27c60 ((work_completion)(&(&bond->mii_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ec/0x17a0 kernel/workqueue.c:3319
#2: ffffffff8df3b860 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
#2: ffffffff8df3b860 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline]
#2: ffffffff8df3b860 (rcu_read_lock){....}-{1:3}, at: bond_mii_monitor+0x153/0x2e00 drivers/net/bonding/bond_main.c:2959
stack backtrace:
CPU: 1 UID: 0 PID: 1100 Comm: kworker/u8:6 Tainted: G W 6.15.0-rc5-syzkaller-00136-g4d64321c4f6f #0 PREEMPT(full)
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Workqueue: bond0 bond_mii_monitor
Call Trace:
dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
print_lock_invalid_wait_context kernel/locking/lockdep.c:4831 [inline]
check_wait_context kernel/locking/lockdep.c:4903 [inline]
__lock_acquire+0xbcf/0xd20 kernel/locking/lockdep.c:5185
lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5866
down_read+0x46/0x2e0 kernel/locking/rwsem.c:1524
wireless_nlevent_flush net/wireless/wext-core.c:351 [inline]
wext_netdev_notifier_call+0x28/0x110 net/wireless/wext-core.c:371
notifier_call_chain+0x1b3/0x3e0 kernel/notifier.c:85
netif_state_change+0x284/0x3a0 net/core/dev.c:1530
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:866
bond_miimon_inspect drivers/net/bonding/bond_main.c:2739 [inline]
bond_mii_monitor+0x428/0x2e00 drivers/net/bonding/bond_main.c:2961
process_one_work kernel/workqueue.c:3238 [inline]
process_scheduled_works+0xadb/0x17a0 kernel/workqueue.c:3319
worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400
kthread+0x70e/0x8a0 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245