bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:1c, vlan:0)
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P30/1:b..l
rcu: (detected by 1, t=10503 jiffies, g=62321, q=662 ncpus=2)
task:khungtaskd state:R running task stack:30392 pid:30 tgid:30 ppid:2 task_flags:0x208040 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5510 [inline]
__schedule+0x17d9/0x56c0 kernel/sched/core.c:7234
preempt_schedule_irq+0x4d/0xa0 kernel/sched/core.c:7556
irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:539 [inline]
irqentry_exit+0x14f/0x8f0 kernel/entry/common.c:167
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:check_hung_uninterruptible_tasks kernel/hung_task.c:319 [inline]
RIP: 0010:watchdog+0x2fd/0x1030 kernel/hung_task.c:561
Code: 4c 24 28 74 0d 4c 89 f7 e8 00 5d 6d 00 48 8b 4c 24 28 4c 89 74 24 20 4d 8b 36 49 83 c6 10 4c 89 f0 48 c1 e8 03 42 80 3c 28 00 <74> 0d 4c 89 f7 e8 d9 5c 6d 00 48 8b 4c 24 28 4d 8b 26 4d 39 f4 0f
RSP: 0018:ffffc90000a67d58 EFLAGS: 00000246
RAX: 1ffff11006255912 RBX: 00000000003ffe91 RCX: ffff8880722e8570
RDX: 0000000000000000 RSI: 0000000000000019 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffff88802c3cdd2b R09: 1ffff11005879ba5
R10: dffffc0000000000 R11: ffffed1005879ba6 R12: ffff8880312acfd0
R13: dffffc0000000000 R14: ffff8880312ac890 R15: 1ffffffff1d01e50
kthread+0x388/0x470 kernel/kthread.c:436
ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
rcu: rcu_preempt kthread starved for 7845 jiffies! g62321 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0
rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt state:R running task stack:26848 pid:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5510 [inline]
__schedule+0x17d9/0x56c0 kernel/sched/core.c:7234
__schedule_loop kernel/sched/core.c:7311 [inline]
schedule+0x164/0x2b0 kernel/sched/core.c:7326
schedule_timeout+0x152/0x2c0 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x30c/0x11f0 kernel/rcu/tree.c:2123
rcu_gp_kthread+0x9e/0x2b0 kernel/rcu/tree.c:2325
kthread+0x388/0x470 kernel/kthread.c:436
ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 5641 Comm: kworker/u9:8 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Workqueue: hci7 hci_cmd_sync_work
RIP: 0010:is_multicast_ether_addr include/linux/etherdevice.h:133 [inline]
RIP: 0010:is_valid_ether_addr include/linux/etherdevice.h:209 [inline]
RIP: 0010:br_handle_frame+0x1dd/0x1510 net/bridge/br_input.c:349
Code: df 41 0f b6 04 1c 84 c0 0f 85 00 0b 00 00 48 8b 44 24 08 44 0f b7 38 4f 8d 34 2f 49 83 c6 06 4c 89 f0 48 c1 e8 03 0f b6 04 18 <84> c0 0f 85 fd 0a 00 00 41 8b 1e 89 de 83 e6 01 31 ff e8 ac 6f 27
RSP: 0018:ffffc90000007880 EFLAGS: 00000a06
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffff8880310a8000
RDX: 0000000000000100 RSI: 0000000000000002 RDI: 000000000000ffff
RBP: ffffc900000079b0 R08: ffffc90000007b5f R09: 0000000000000000
R10: ffffc90000007af0 R11: ffffffff8a9f0460 R12: 1ffff1101465037f
R13: ffff8880402af400 R14: ffff8880402af408 R15: 0000000000000002
FS: 0000000000000000(0000) GS:ffff888124f5a000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007eff863aeac0 CR3: 0000000077640000 CR4: 00000000003526f0
Call Trace:
__netif_receive_skb_core+0x989/0x30b0 net/core/dev.c:6093
__netif_receive_skb_one_core net/core/dev.c:6204 [inline]
__netif_receive_skb net/core/dev.c:6319 [inline]
process_backlog+0x706/0x1860 net/core/dev.c:6670
__napi_poll+0xaa/0x330 net/core/dev.c:7729
napi_poll net/core/dev.c:7792 [inline]
net_rx_action+0x61d/0xf50 net/core/dev.c:7949
handle_softirqs+0x225/0x840 kernel/softirq.c:622
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0xca/0x220 kernel/softirq.c:735
irq_exit_rcu+0x9/0x30 kernel/softirq.c:752
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1062
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:finish_task_switch+0x417/0xc60 kernel/sched/core.c:5361
Code: 04 00 00 41 c7 84 24 20 0e 00 00 00 00 00 00 0f 1f 44 00 00 49 83 c4 48 4c 89 e7 e8 43 0b 3c 0a e8 5e ac 39 00 fb 4c 8b 65 c8 <49> 8d bc 24 f8 16 00 00 48 89 f8 48 c1 e8 03 42 0f b6 04 30 84 c0
RSP: 0018:ffffc9000453f2e0 EFLAGS: 00000206
RAX: 00000000000c9b8d RBX: ffff8880b863bf20 RCX: 0000000080000001
RDX: 0000000000000007 RSI: ffffffff8e22940e RDI: ffffffff8c4bd280
RBP: ffffc9000453f330 R08: ffffffff90576bf7 R09: 1ffffffff20aed7e
R10: dffffc0000000000 R11: fffffbfff20aed7f R12: ffff8880310a8000
R13: ffff8880b863bee8 R14: dffffc0000000000 R15: 1ffff110170c77e4
context_switch kernel/sched/core.c:5513 [inline]
__schedule+0x17e1/0x56c0 kernel/sched/core.c:7234
preempt_schedule_common+0x82/0xd0 kernel/sched/core.c:7413
preempt_schedule_thunk+0x16/0x40 arch/x86/entry/thunk.S:12
__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:179 [inline]
_raw_spin_unlock_irqrestore+0x74/0x80 kernel/locking/spinlock.c:198
spin_unlock_irqrestore include/linux/spinlock.h:408 [inline]
__slab_free+0x222/0x2c0 mm/slub.c:-1
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x99/0x100 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:350
kasan_slab_alloc include/linux/kasan.h:253 [inline]
slab_post_alloc_hook mm/slub.c:4612 [inline]
slab_alloc_node mm/slub.c:4945 [inline]
kmem_cache_alloc_node_noprof+0x355/0x610 mm/slub.c:5017
__alloc_skb+0x1d7/0x7a0 net/core/skbuff.c:704
alloc_skb include/linux/skbuff.h:1384 [inline]
mgmt_alloc_skb net/bluetooth/mgmt_util.c:61 [inline]
mgmt_send_event+0x46/0x190 net/bluetooth/mgmt_util.c:113
mgmt_event net/bluetooth/mgmt.c:337 [inline]
mgmt_connect_failed+0x322/0x4c0 net/bluetooth/mgmt.c:9915
hci_conn_failed+0xda/0x320 net/bluetooth/hci_conn.c:1397
hci_abort_conn_sync+0xdd0/0x1190 net/bluetooth/hci_sync.c:5805
hci_cmd_sync_work+0x20b/0x3f0 net/bluetooth/hci_sync.c:332
process_one_work kernel/workqueue.c:3322 [inline]
process_scheduled_works+0xa8e/0x14e0 kernel/workqueue.c:3405
worker_thread+0xa47/0xfb0 kernel/workqueue.c:3486
kthread+0x388/0x470 kernel/kthread.c:436
ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
net_ratelimit: 8906 callbacks suppressed
bridge0: received packet on veth1_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:1c, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:16:35:67:fa:74:a4, vlan:0)
bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:1c, vlan:0)
bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:16:35:67:fa:74:a4, vlan:0)
bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:1c, vlan:0)
bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:16:35:67:fa:74:a4, vlan:0)
net_ratelimit: 11856 callbacks suppressed
bridge0: received packet on veth1_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:16:35:67:fa:74:a4, vlan:0)
bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:1c, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:16:35:67:fa:74:a4, vlan:0)
bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:1c, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:16:35:67:fa:74:a4, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:1c, vlan:0)