=============================
WARNING: suspicious RCU usage
6.14.0-rc1-syzkaller-00235-g9946eaf552b1 #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/u32:29/7760:
 #0: ffff88804da98948 ((wq_completion)bond0){+.+.}-{0:0}, at: process_one_work+0x1293/0x1ba0 kernel/workqueue.c:3211
 #1: ffffc90005ecfd18 ((work_completion)(&(&bond->mii_work)->work)){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3212
 #2: ffffffff8e1bcc80 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
 #2: ffffffff8e1bcc80 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #2: ffffffff8e1bcc80 (rcu_read_lock){....}-{1:3}, at: bond_mii_monitor+0x140/0x2d90 drivers/net/bonding/bond_main.c:2960

stack backtrace:
CPU: 2 UID: 0 PID: 7760 Comm: kworker/u32:29 Not tainted 6.14.0-rc1-syzkaller-00235-g9946eaf552b1 #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:
 <TASK>
 __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:6847
 dev_activate+0x457/0x12b0 net/sched/sch_generic.c:1251
 linkwatch_do_dev+0x13d/0x160 net/core/link_watch.c:182
 linkwatch_sync_dev+0x181/0x210 net/core/link_watch.c:272
 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:2740 [inline]
 bond_mii_monitor+0x3c1/0x2d90 drivers/net/bonding/bond_main.c:2962
 process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3236
 process_scheduled_works kernel/workqueue.c:3317 [inline]
 worker_thread+0x6c8/0xf00 kernel/workqueue.c:3398
 kthread+0x3af/0x750 kernel/kthread.c:464
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>

=============================
WARNING: suspicious RCU usage
6.14.0-rc1-syzkaller-00235-g9946eaf552b1 #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/u32:29/7760:
 #0: ffff88804da98948 ((wq_completion)bond0){+.+.}-{0:0}, at: process_one_work+0x1293/0x1ba0 kernel/workqueue.c:3211
 #1: ffffc90005ecfd18 ((work_completion)(&(&bond->mii_work)->work)){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3212
 #2: ffffffff8e1bcc80 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
 #2: ffffffff8e1bcc80 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #2: ffffffff8e1bcc80 (rcu_read_lock){....}-{1:3}, at: bond_mii_monitor+0x140/0x2d90 drivers/net/bonding/bond_main.c:2960

stack backtrace:
CPU: 2 UID: 0 PID: 7760 Comm: kworker/u32:29 Not tainted 6.14.0-rc1-syzkaller-00235-g9946eaf552b1 #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:
 <TASK>
 __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:6847
 transition_one_qdisc+0x1d4/0x210 net/sched/sch_generic.c:1229
 netdev_for_each_tx_queue include/linux/netdevice.h:2590 [inline]
 dev_activate+0x211/0x12b0 net/sched/sch_generic.c:1259
 linkwatch_do_dev+0x13d/0x160 net/core/link_watch.c:182
 linkwatch_sync_dev+0x181/0x210 net/core/link_watch.c:272
 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:2740 [inline]
 bond_mii_monitor+0x3c1/0x2d90 drivers/net/bonding/bond_main.c:2962
 process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3236
 process_scheduled_works kernel/workqueue.c:3317 [inline]
 worker_thread+0x6c8/0xf00 kernel/workqueue.c:3398
 kthread+0x3af/0x750 kernel/kthread.c:464
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>

=============================
WARNING: suspicious RCU usage
6.14.0-rc1-syzkaller-00235-g9946eaf552b1 #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/u32:29/7760:
 #0: ffff88804da98948 ((wq_completion)bond0){+.+.}-{0:0}, at: process_one_work+0x1293/0x1ba0 kernel/workqueue.c:3211
 #1: ffffc90005ecfd18 ((work_completion)(&(&bond->mii_work)->work)){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3212
 #2: ffffffff8e1bcc80 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
 #2: ffffffff8e1bcc80 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #2: ffffffff8e1bcc80 (rcu_read_lock){....}-{1:3}, at: bond_mii_monitor+0x140/0x2d90 drivers/net/bonding/bond_main.c:2960

stack backtrace:
CPU: 2 UID: 0 PID: 7760 Comm: kworker/u32:29 Not tainted 6.14.0-rc1-syzkaller-00235-g9946eaf552b1 #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:
 <TASK>
 __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:6847
 dev_ingress_queue include/linux/rtnetlink.h:162 [inline]
 dev_activate+0x7eb/0x12b0 net/sched/sch_generic.c:1260
 linkwatch_do_dev+0x13d/0x160 net/core/link_watch.c:182
 linkwatch_sync_dev+0x181/0x210 net/core/link_watch.c:272
 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:2740 [inline]
 bond_mii_monitor+0x3c1/0x2d90 drivers/net/bonding/bond_main.c:2962
 process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3236
 process_scheduled_works kernel/workqueue.c:3317 [inline]
 worker_thread+0x6c8/0xf00 kernel/workqueue.c:3398
 kthread+0x3af/0x750 kernel/kthread.c:464
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
------------[ cut here ]------------
RTNL: assertion failed at net/core/dev.c (2132)
WARNING: CPU: 3 PID: 7760 at net/core/dev.c:2132 call_netdevice_notifiers_info+0x112/0x140 net/core/dev.c:2132
Modules linked in:
CPU: 3 UID: 0 PID: 7760 Comm: kworker/u32:29 Not tainted 6.14.0-rc1-syzkaller-00235-g9946eaf552b1 #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:call_netdevice_notifiers_info+0x112/0x140 net/core/dev.c:2132
Code: 84 ed 75 89 e8 0f 90 86 f8 c6 05 00 89 17 07 01 90 ba 54 08 00 00 48 c7 c6 e0 38 9e 8c 48 c7 c7 20 39 9e 8c e8 cf cb 46 f8 90 <0f> 0b 90 90 e9 5a ff ff ff 48 89 df e8 4d a8 e9 f8 e9 08 ff ff ff
RSP: 0018:ffffc90005ecf8e8 EFLAGS: 00010282
RAX: 0000000000000000 RBX: ffffc90005ecf930 RCX: ffffffff817a1159
RDX: ffff888029504880 RSI: ffffffff817a1166 RDI: 0000000000000001
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000003 R12: 0000000000000004
R13: ffff88804b9f0000 R14: ffff88804da206a0 R15: ffffffff8fef9220
FS:  0000000000000000(0000) GS:ffff88806a900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00004000001f1100 CR3: 0000000031a38000 CR4: 0000000000352ef0
DR0: 0000000000000008 DR1: 00000000000000ff DR2: fffffffffffffffb
DR3: 3e00000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 netdev_state_change net/core/dev.c:1506 [inline]
 netdev_state_change+0x115/0x150 net/core/dev.c:1499
 linkwatch_do_dev+0x12b/0x160 net/core/link_watch.c:186
 linkwatch_sync_dev+0x181/0x210 net/core/link_watch.c:272
 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:2740 [inline]
 bond_mii_monitor+0x3c1/0x2d90 drivers/net/bonding/bond_main.c:2962
 process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3236
 process_scheduled_works kernel/workqueue.c:3317 [inline]
 worker_thread+0x6c8/0xf00 kernel/workqueue.c:3398
 kthread+0x3af/0x750 kernel/kthread.c:464
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>