=============================
WARNING: suspicious RCU usage
6.12.0-rc7-syzkaller-00212-g4a5df3796467 #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/u8:8/27115:
#0: ffff888043f95148 ((wq_completion)bond0#20){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3204 [inline]
#0: ffff888043f95148 ((wq_completion)bond0#20){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1850 kernel/workqueue.c:3310
#1: ffffc9000b0dfd00 ((work_completion)(&(&bond->mii_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3205 [inline]
#1: ffffc9000b0dfd00 ((work_completion)(&(&bond->mii_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1850 kernel/workqueue.c:3310
#2: ffffffff8e937da0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#2: ffffffff8e937da0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#2: ffffffff8e937da0 (rcu_read_lock){....}-{1:2}, at: bond_mii_monitor+0x174/0x3170 drivers/net/bonding/bond_main.c:2951
stack backtrace:
CPU: 1 UID: 0 PID: 27115 Comm: kworker/u8:8 Not tainted 6.12.0-rc7-syzkaller-00212-g4a5df3796467 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
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:6821
dev_deactivate_queue+0x8f/0x160 net/sched/sch_generic.c:1290
netdev_for_each_tx_queue include/linux/netdevice.h:2504 [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:175
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:2731 [inline]
bond_mii_monitor+0x49a/0x3170 drivers/net/bonding/bond_main.c:2953
process_one_work kernel/workqueue.c:3229 [inline]
process_scheduled_works+0xa63/0x1850 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
=============================
WARNING: suspicious RCU usage
6.12.0-rc7-syzkaller-00212-g4a5df3796467 #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/u8:8/27115:
#0: ffff888043f95148 ((wq_completion)bond0#20){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3204 [inline]
#0: ffff888043f95148 ((wq_completion)bond0#20){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1850 kernel/workqueue.c:3310
#1: ffffc9000b0dfd00 ((work_completion)(&(&bond->mii_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3205 [inline]
#1: ffffc9000b0dfd00 ((work_completion)(&(&bond->mii_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1850 kernel/workqueue.c:3310
#2: ffffffff8e937da0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#2: ffffffff8e937da0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#2: ffffffff8e937da0 (rcu_read_lock){....}-{1:2}, at: bond_mii_monitor+0x174/0x3170 drivers/net/bonding/bond_main.c:2951
stack backtrace:
CPU: 1 UID: 0 PID: 27115 Comm: kworker/u8:8 Not tainted 6.12.0-rc7-syzkaller-00212-g4a5df3796467 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
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:6821
dev_ingress_queue include/linux/rtnetlink.h:100 [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:175
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:2731 [inline]
bond_mii_monitor+0x49a/0x3170 drivers/net/bonding/bond_main.c:2953
process_one_work kernel/workqueue.c:3229 [inline]
process_scheduled_works+0xa63/0x1850 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
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: 1 UID: 0 PID: 27115 Comm: kworker/u8:8 Not tainted 6.12.0-rc7-syzkaller-00212-g4a5df3796467 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
Workqueue: bond0 bond_mii_monitor
RIP: 0010:qdisc_deactivate net/sched/sch_generic.c:1277 [inline]
RIP: 0010:dev_deactivate_queue+0xcf/0x160 net/sched/sch_generic.c:1292
Code: 3c 03 00 74 08 4c 89 ff e8 ce 29 4f f8 4d 8b 37 4d 85 f6 74 53 4d 8d 6e 10 4c 89 e8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <0f> b6 04 08 84 c0 75 6c 41 8b 6d 00 89 ee 83 e6 01 31 ff e8 d9 72
RSP: 0018:ffffc9000b0df668 EFLAGS: 00010207
RAX: 000000000000000a RBX: 1ffff9200161ff58 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff89ac7a80 R09: 1ffffffff2853537
R10: dffffc0000000000 R11: fffffbfff2853538 R12: ffffffff8fd066c0
R13: 0000000000000056 R14: 0000000000000046 R15: ffffc9000b0ffac0
FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000000 CR3: 000000000e734000 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:2504 [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:175
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:2731 [inline]
bond_mii_monitor+0x49a/0x3170 drivers/net/bonding/bond_main.c:2953
process_one_work kernel/workqueue.c:3229 [inline]
process_scheduled_works+0xa63/0x1850 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
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:qdisc_deactivate net/sched/sch_generic.c:1277 [inline]
RIP: 0010:dev_deactivate_queue+0xcf/0x160 net/sched/sch_generic.c:1292
Code: 3c 03 00 74 08 4c 89 ff e8 ce 29 4f f8 4d 8b 37 4d 85 f6 74 53 4d 8d 6e 10 4c 89 e8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <0f> b6 04 08 84 c0 75 6c 41 8b 6d 00 89 ee 83 e6 01 31 ff e8 d9 72
RSP: 0018:ffffc9000b0df668 EFLAGS: 00010207
RAX: 000000000000000a RBX: 1ffff9200161ff58 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff89ac7a80 R09: 1ffffffff2853537
R10: dffffc0000000000 R11: fffffbfff2853538 R12: ffffffff8fd066c0
R13: 0000000000000056 R14: 0000000000000046 R15: ffffc9000b0ffac0
FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000000 CR3: 000000000e734000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 3c 03 cmp $0x3,%al
2: 00 74 08 4c add %dh,0x4c(%rax,%rcx,1)
6: 89 ff mov %edi,%edi
8: e8 ce 29 4f f8 call 0xf84f29db
d: 4d 8b 37 mov (%r15),%r14
10: 4d 85 f6 test %r14,%r14
13: 74 53 je 0x68
15: 4d 8d 6e 10 lea 0x10(%r14),%r13
19: 4c 89 e8 mov %r13,%rax
1c: 48 c1 e8 03 shr $0x3,%rax
20: 48 b9 00 00 00 00 00 movabs $0xdffffc0000000000,%rcx
27: fc ff df
* 2a: 0f b6 04 08 movzbl (%rax,%rcx,1),%eax <-- trapping instruction
2e: 84 c0 test %al,%al
30: 75 6c jne 0x9e
32: 41 8b 6d 00 mov 0x0(%r13),%ebp
36: 89 ee mov %ebp,%esi
38: 83 e6 01 and $0x1,%esi
3b: 31 ff xor %edi,%edi
3d: e8 .byte 0xe8
3e: d9 .byte 0xd9
3f: 72 .byte 0x72