=============================
WARNING: suspicious RCU usage
6.13.0-rc5-syzkaller-00012-g0bc21e701a6f #0 Not tainted
-----------------------------
net/sched/sch_generic.c:1256 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/u8:20/17053:
 #0: ffff88807939d148 ((wq_completion)bond0#54){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3204 [inline]
 #0: ffff88807939d148 ((wq_completion)bond0#54){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1840 kernel/workqueue.c:3310
 #1: ffffc9000461fd00 ((work_completion)(&(&bond->mii_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3205 [inline]
 #1: ffffc9000461fd00 ((work_completion)(&(&bond->mii_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1840 kernel/workqueue.c:3310
 #2: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
 #2: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #2: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: bond_mii_monitor+0x174/0x3170 drivers/net/bonding/bond_main.c:2960

stack backtrace:
CPU: 1 UID: 0 PID: 17053 Comm: kworker/u8:20 Not tainted 6.13.0-rc5-syzkaller-00012-g0bc21e701a6f #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: bond0 bond_mii_monitor
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
 lockdep_rcu_suspicious+0x226/0x340 kernel/locking/lockdep.c:6845
 dev_activate+0xf8/0x1240 net/sched/sch_generic.c:1256
 linkwatch_do_dev+0xfb/0x170 net/core/link_watch.c:178
 ethtool_op_get_link+0x15/0x60 net/ethtool/ioctl.c:62
 bond_check_dev_link+0x1f1/0x3f0 drivers/net/bonding/bond_main.c:873
 bond_miimon_inspect drivers/net/bonding/bond_main.c:2740 [inline]
 bond_mii_monitor+0x49a/0x3170 drivers/net/bonding/bond_main.c:2962
 process_one_work kernel/workqueue.c:3229 [inline]
 process_scheduled_works+0xa66/0x1840 kernel/workqueue.c:3310
 worker_thread+0x870/0xd30 kernel/workqueue.c:3391
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>

=============================
WARNING: suspicious RCU usage
6.13.0-rc5-syzkaller-00012-g0bc21e701a6f #0 Not tainted
-----------------------------
net/sched/sch_generic.c:1234 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/u8:20/17053:
 #0: ffff88807939d148 ((wq_completion)bond0#54){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3204 [inline]
 #0: ffff88807939d148 ((wq_completion)bond0#54){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1840 kernel/workqueue.c:3310
 #1: ffffc9000461fd00 ((work_completion)(&(&bond->mii_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3205 [inline]
 #1: ffffc9000461fd00 ((work_completion)(&(&bond->mii_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1840 kernel/workqueue.c:3310
 #2: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
 #2: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #2: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: bond_mii_monitor+0x174/0x3170 drivers/net/bonding/bond_main.c:2960

stack backtrace:
CPU: 1 UID: 0 PID: 17053 Comm: kworker/u8:20 Not tainted 6.13.0-rc5-syzkaller-00012-g0bc21e701a6f #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: bond0 bond_mii_monitor
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
 lockdep_rcu_suspicious+0x226/0x340 kernel/locking/lockdep.c:6845
 transition_one_qdisc+0x8e/0x1c0 net/sched/sch_generic.c:1234
 netdev_for_each_tx_queue include/linux/netdevice.h:2562 [inline]
 dev_activate+0x838/0x1240 net/sched/sch_generic.c:1264
 linkwatch_do_dev+0xfb/0x170 net/core/link_watch.c:178
 ethtool_op_get_link+0x15/0x60 net/ethtool/ioctl.c:62
 bond_check_dev_link+0x1f1/0x3f0 drivers/net/bonding/bond_main.c:873
 bond_miimon_inspect drivers/net/bonding/bond_main.c:2740 [inline]
 bond_mii_monitor+0x49a/0x3170 drivers/net/bonding/bond_main.c:2962
 process_one_work kernel/workqueue.c:3229 [inline]
 process_scheduled_works+0xa66/0x1840 kernel/workqueue.c:3310
 worker_thread+0x870/0xd30 kernel/workqueue.c:3391
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>

=============================
WARNING: suspicious RCU usage
6.13.0-rc5-syzkaller-00012-g0bc21e701a6f #0 Not tainted
-----------------------------
./include/linux/rtnetlink.h:156 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/u8:20/17053:
 #0: ffff88807939d148 ((wq_completion)bond0#54){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3204 [inline]
 #0: ffff88807939d148 ((wq_completion)bond0#54){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1840 kernel/workqueue.c:3310
 #1: ffffc9000461fd00 ((work_completion)(&(&bond->mii_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3205 [inline]
 #1: ffffc9000461fd00 ((work_completion)(&(&bond->mii_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1840 kernel/workqueue.c:3310
 #2: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
 #2: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #2: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: bond_mii_monitor+0x174/0x3170 drivers/net/bonding/bond_main.c:2960

stack backtrace:
CPU: 0 UID: 0 PID: 17053 Comm: kworker/u8:20 Not tainted 6.13.0-rc5-syzkaller-00012-g0bc21e701a6f #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: bond0 bond_mii_monitor
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
 lockdep_rcu_suspicious+0x226/0x340 kernel/locking/lockdep.c:6845
 dev_ingress_queue include/linux/rtnetlink.h:156 [inline]
 dev_activate+0x925/0x1240 net/sched/sch_generic.c:1265
 linkwatch_do_dev+0xfb/0x170 net/core/link_watch.c:178
 ethtool_op_get_link+0x15/0x60 net/ethtool/ioctl.c:62
 bond_check_dev_link+0x1f1/0x3f0 drivers/net/bonding/bond_main.c:873
 bond_miimon_inspect drivers/net/bonding/bond_main.c:2740 [inline]
 bond_mii_monitor+0x49a/0x3170 drivers/net/bonding/bond_main.c:2962
 process_one_work kernel/workqueue.c:3229 [inline]
 process_scheduled_works+0xa66/0x1840 kernel/workqueue.c:3310
 worker_thread+0x870/0xd30 kernel/workqueue.c:3391
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
------------[ cut here ]------------
RTNL: assertion failed at net/core/dev.c (1987)
WARNING: CPU: 0 PID: 17053 at net/core/dev.c:1987 call_netdevice_notifiers_info+0x106/0x110 net/core/dev.c:1987
Modules linked in:
CPU: 0 UID: 0 PID: 17053 Comm: kworker/u8:20 Not tainted 6.13.0-rc5-syzkaller-00012-g0bc21e701a6f #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: bond0 bond_mii_monitor
RIP: 0010:call_netdevice_notifiers_info+0x106/0x110 net/core/dev.c:1987
Code: cc cc cc cc e8 1b 24 0c f8 c6 05 80 6d 70 06 01 90 48 c7 c7 00 ea 0b 8d 48 c7 c6 e0 e9 0b 8d ba c3 07 00 00 e8 0b c8 cc f7 90 <0f> 0b 90 90 e9 73 ff ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc9000461f6d8 EFLAGS: 00010246
RAX: 2a23689ce11d1f00 RBX: ffff888035153c80 RCX: ffff888030f09e00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff81601a82 R09: 1ffff110170c519a
R10: dffffc0000000000 R11: ffffed10170c519b R12: dffffc0000000000
R13: 1ffff920008c3ee0 R14: 0000000000000004 R15: ffffc9000461f720
FS:  0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000563fee6fd131 CR3: 00000000340b0000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 netdev_state_change+0x11f/0x1a0 net/core/dev.c:1378
 linkwatch_do_dev+0x112/0x170 net/core/link_watch.c:182
 ethtool_op_get_link+0x15/0x60 net/ethtool/ioctl.c:62
 bond_check_dev_link+0x1f1/0x3f0 drivers/net/bonding/bond_main.c:873
 bond_miimon_inspect drivers/net/bonding/bond_main.c:2740 [inline]
 bond_mii_monitor+0x49a/0x3170 drivers/net/bonding/bond_main.c:2962
 process_one_work kernel/workqueue.c:3229 [inline]
 process_scheduled_works+0xa66/0x1840 kernel/workqueue.c:3310
 worker_thread+0x870/0xd30 kernel/workqueue.c:3391
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>