=============================
WARNING: suspicious RCU usage
6.13.0-rc3-next-20241219-syzkaller #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/u8:8/2989:
#0: ffff888062b4a948 ((wq_completion)bond0#4){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3204 [inline]
#0: ffff888062b4a948 ((wq_completion)bond0#4){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1840 kernel/workqueue.c:3310
#1: ffffc9000c047c60 ((work_completion)(&(&bond->mii_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3205 [inline]
#1: ffffc9000c047c60 ((work_completion)(&(&bond->mii_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1840 kernel/workqueue.c:3310
#2: ffffffff8e937d20 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#2: ffffffff8e937d20 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#2: ffffffff8e937d20 (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: 2989 Comm: kworker/u8:8 Not tainted 6.13.0-rc3-next-20241219-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024
Workqueue: bond0 bond_mii_monitor
Call Trace:
__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_deactivate_queue+0x8f/0x160 net/sched/sch_generic.c:1290
netdev_for_each_tx_queue include/linux/netdevice.h:2566 [inline]
dev_deactivate_many+0xc8/0xb10 net/sched/sch_generic.c:1363
dev_deactivate+0x184/0x280 net/sched/sch_generic.c:1403
linkwatch_do_dev+0x10a/0x170 net/core/link_watch.c:180
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+0x7a9/0x920 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
=============================
WARNING: suspicious RCU usage
6.13.0-rc3-next-20241219-syzkaller #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/u8:8/2989:
#0: ffff888062b4a948 ((wq_completion)bond0#4){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3204 [inline]
#0: ffff888062b4a948 ((wq_completion)bond0#4){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1840 kernel/workqueue.c:3310
#1: ffffc9000c047c60 ((work_completion)(&(&bond->mii_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3205 [inline]
#1: ffffc9000c047c60 ((work_completion)(&(&bond->mii_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1840 kernel/workqueue.c:3310
#2: ffffffff8e937d20 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#2: ffffffff8e937d20 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#2: ffffffff8e937d20 (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: 2989 Comm: kworker/u8:8 Not tainted 6.13.0-rc3-next-20241219-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024
Workqueue: bond0 bond_mii_monitor
Call Trace:
__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_deactivate_many+0x18f/0xb10 net/sched/sch_generic.c:1365
dev_deactivate+0x184/0x280 net/sched/sch_generic.c:1403
linkwatch_do_dev+0x10a/0x170 net/core/link_watch.c:180
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+0x7a9/0x920 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Oops: general protection fault, probably for non-canonical address 0xdffffc000000000a: 0000 [#1] PREEMPT SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000050-0x0000000000000057]
CPU: 0 UID: 0 PID: 2989 Comm: kworker/u8:8 Not tainted 6.13.0-rc3-next-20241219-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024
Workqueue: bond0 bond_mii_monitor
RIP: 0010:dev_deactivate_queue+0xa4/0x160 net/sched/sch_generic.c:1290
Code: 00 80 0f 8d be 0a 05 00 00 48 c7 c2 20 83 0f 8d e8 c1 1e bf f7 48 b8 00 00 00 00 00 fc ff df 49 83 c7 10 4c 89 fb 48 c1 eb 03 <80> 3c 03 00 74 08 4c 89 ff e8 ae b9 49 f8 4d 8b 37 4d 85 f6 74 53
RSP: 0018:ffffc9000c0475c8 EFLAGS: 00010207
RAX: dffffc0000000000 RBX: 000000000000000a RCX: ffff8880304bbc00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff89dbd250 R09: 1ffffffff285ab37
R10: dffffc0000000000 R11: fffffbfff285ab38 R12: ffffffff8fcfe980
R13: 1ffff920017caf98 R14: ffffc9000be57820 R15: 0000000000000056
FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b3030cff8 CR3: 00000000570fc000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
netdev_for_each_tx_queue include/linux/netdevice.h:2566 [inline]
dev_deactivate_many+0xc8/0xb10 net/sched/sch_generic.c:1363
dev_deactivate+0x184/0x280 net/sched/sch_generic.c:1403
linkwatch_do_dev+0x10a/0x170 net/core/link_watch.c:180
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+0x7a9/0x920 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:dev_deactivate_queue+0xa4/0x160 net/sched/sch_generic.c:1290
Code: 00 80 0f 8d be 0a 05 00 00 48 c7 c2 20 83 0f 8d e8 c1 1e bf f7 48 b8 00 00 00 00 00 fc ff df 49 83 c7 10 4c 89 fb 48 c1 eb 03 <80> 3c 03 00 74 08 4c 89 ff e8 ae b9 49 f8 4d 8b 37 4d 85 f6 74 53
RSP: 0018:ffffc9000c0475c8 EFLAGS: 00010207
RAX: dffffc0000000000 RBX: 000000000000000a RCX: ffff8880304bbc00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff89dbd250 R09: 1ffffffff285ab37
R10: dffffc0000000000 R11: fffffbfff285ab38 R12: ffffffff8fcfe980
R13: 1ffff920017caf98 R14: ffffc9000be57820 R15: 0000000000000056
FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c409e05 CR3: 00000000658a8000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess), 1 bytes skipped:
0: 80 0f 8d orb $0x8d,(%rdi)
3: be 0a 05 00 00 mov $0x50a,%esi
8: 48 c7 c2 20 83 0f 8d mov $0xffffffff8d0f8320,%rdx
f: e8 c1 1e bf f7 call 0xf7bf1ed5
14: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
1b: fc ff df
1e: 49 83 c7 10 add $0x10,%r15
22: 4c 89 fb mov %r15,%rbx
25: 48 c1 eb 03 shr $0x3,%rbx
* 29: 80 3c 03 00 cmpb $0x0,(%rbx,%rax,1) <-- trapping instruction
2d: 74 08 je 0x37
2f: 4c 89 ff mov %r15,%rdi
32: e8 ae b9 49 f8 call 0xf849b9e5
37: 4d 8b 37 mov (%r15),%r14
3a: 4d 85 f6 test %r14,%r14
3d: 74 53 je 0x92