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:0c, vlan:0)
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: (detected by 1, t=10664 jiffies, g=161065, q=854 ncpus=2)
rcu: All QSes seen, last rcu_preempt kthread activity 8140 (4295055865-4295047725), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread starved for 8141 jiffies! g161065 f0x2 RCU_GP_WAIT_FQS(5) ->state=R ->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:27496 pid:17 tgid:17 ppid:2 task_flags:0x208040 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5520 [inline]
__schedule+0x17d4/0x5820 kernel/sched/core.c:7270
__schedule_loop kernel/sched/core.c:7347 [inline]
schedule+0x164/0x2b0 kernel/sched/core.c:7362
schedule_timeout+0x152/0x2c0 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x30c/0x11f0 kernel/rcu/tree.c:2122
rcu_gp_kthread+0x9e/0x2b0 kernel/rcu/tree.c:2330
kthread+0x38b/0x480 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: 15470 Comm: kworker/R-bond8 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Workqueue: bond8 bond_mii_monitor
RIP: 0010:hlock_class kernel/locking/lockdep.c:234 [inline]
RIP: 0010:check_wait_context kernel/locking/lockdep.c:4895 [inline]
RIP: 0010:__lock_acquire+0x54b/0x2e50 kernel/locking/lockdep.c:5204
Code: 48 83 c3 28 41 89 c4 49 39 cf 0f 8d cf 00 00 00 49 83 ff 31 0f 83 8c 00 00 00 48 8b 03 25 ff 1f 00 00 48 0f a3 05 b5 95 f6 12 <73> 10 48 69 c0 c8 00 00 00 48 8d 88 d0 b4 3a 94 eb 3a 83 3d 7c 25
RSP: 0018:ffffc900000060d8 EFLAGS: 00000003
RAX: 0000000000000007 RBX: ffff8880334d0c48 RCX: 0000000000000006
RDX: 0000000000000003 RSI: 0000000000000003 RDI: ffff8880334d0000
RBP: 0000000000000001 R08: 0f00000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: ffffffff8ed5c6e0 R12: 0000000000000003
R13: 0000000000000000 R14: ffff8880334d0ca0 R15: 0000000000000003
FS: 0000000000000000(0000) GS:ffff888124ce0000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fffddbeebd4 CR3: 00000000776d4000 CR4: 00000000003526f0
Call Trace:
lock_acquire+0x115/0x350 kernel/locking/lockdep.c:5908
rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
rcu_read_lock include/linux/rcupdate.h:849 [inline]
class_rcu_constructor include/linux/rcupdate.h:1216 [inline]
unwind_next_frame+0xac/0x2550 arch/x86/kernel/unwind_orc.c:495
arch_stack_walk+0x11b/0x150 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0xa9/0x100 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:57 [inline]
kasan_save_track+0x3e/0x80 mm/kasan/common.c:78
kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:584
poison_slab_object mm/kasan/common.c:253 [inline]
__kasan_slab_free+0x5c/0x80 mm/kasan/common.c:285
kasan_slab_free include/linux/kasan.h:235 [inline]
slab_free_hook mm/slub.c:2748 [inline]
slab_free mm/slub.c:6499 [inline]
kmem_cache_free+0x182/0x650 mm/slub.c:6626
skb_ext_reset include/linux/skbuff.h:5142 [inline]
skb_scrub_packet+0x2c8/0x3d0 net/core/skbuff.c:6298
____dev_forward_skb include/linux/netdevice.h:4483 [inline]
__dev_forward_skb2+0x28c/0x730 net/core/dev.c:2466
veth_forward_skb drivers/net/veth.c:324 [inline]
veth_xmit+0x493/0xe60 drivers/net/veth.c:380
__netdev_start_xmit include/linux/netdevice.h:5429 [inline]
netdev_start_xmit include/linux/netdevice.h:5438 [inline]
xmit_one net/core/dev.c:3937 [inline]
dev_hard_start_xmit+0x2cd/0x830 net/core/dev.c:3953
__dev_queue_xmit+0x14c0/0x3820 net/core/dev.c:4926
dev_queue_xmit include/linux/netdevice.h:3461 [inline]
br_dev_queue_push_xmit+0x370/0x4b0 net/bridge/br_forward.c:53
NF_HOOK+0x64e/0x6e0 include/linux/netfilter.h:325
br_nf_post_routing+0xa53/0xee0 net/bridge/br_netfilter_hooks.c:964
nf_hook_entry_hookfn include/linux/netfilter.h:165 [inline]
nf_hook_slow+0xc5/0x220 net/netfilter/core.c:619
nf_hook include/linux/netfilter.h:280 [inline]
NF_HOOK+0x23e/0x3f0 include/linux/netfilter.h:323
br_forward_finish+0xd3/0x130 net/bridge/br_forward.c:66
br_nf_hook_thresh net/bridge/br_netfilter_hooks.c:1165 [inline]
br_nf_forward_finish+0xa76/0xea0 net/bridge/br_netfilter_hooks.c:667
NF_HOOK+0x64e/0x6e0 include/linux/netfilter.h:325
br_nf_forward_ip+0x7eb/0xa30 net/bridge/br_netfilter_hooks.c:721
nf_hook_entry_hookfn include/linux/netfilter.h:165 [inline]
nf_hook_slow+0xc5/0x220 net/netfilter/core.c:619
nf_hook include/linux/netfilter.h:280 [inline]
NF_HOOK+0x23e/0x3f0 include/linux/netfilter.h:323
__br_forward+0x397/0x540 net/bridge/br_forward.c:115
br_handle_frame_finish+0x1119/0x1950 net/bridge/br_input.c:229
br_nf_hook_thresh+0x3dd/0x4c0 net/bridge/br_netfilter_hooks.c:-1
br_nf_pre_routing_finish_ipv6+0x90c/0xc40 net/bridge/br_netfilter_ipv6.c:-1
NF_HOOK include/linux/netfilter.h:325 [inline]
br_nf_pre_routing_ipv6+0x382/0x6f0 net/bridge/br_netfilter_ipv6.c:183
nf_hook_entry_hookfn include/linux/netfilter.h:165 [inline]
nf_hook_bridge_pre net/bridge/br_input.c:291 [inline]
br_handle_frame+0x127f/0x1510 net/bridge/br_input.c:442
__netif_receive_skb_core+0x989/0x30c0 net/core/dev.c:6151
__netif_receive_skb_one_core net/core/dev.c:6262 [inline]
__netif_receive_skb net/core/dev.c:6377 [inline]
process_backlog+0x727/0x18b0 net/core/dev.c:6728
__napi_poll+0xaa/0x330 net/core/dev.c:7787
napi_poll net/core/dev.c:7850 [inline]
net_rx_action+0x61d/0xf50 net/core/dev.c:8007
handle_softirqs+0x226/0x860 kernel/softirq.c:645
__do_softirq kernel/softirq.c:679 [inline]
invoke_softirq kernel/softirq.c:519 [inline]
__irq_exit_rcu+0xcb/0x220 kernel/softirq.c:767
irq_exit_rcu+0x9/0x30 kernel/softirq.c:784
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:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:220 [inline]
RIP: 0010:_raw_spin_unlock_irq+0x29/0x50 kernel/locking/spinlock.c:229
Code: 90 f3 0f 1e fa 53 48 89 fb 48 83 c7 18 48 8b 74 24 08 e8 ba 9a bd f5 48 89 df e8 72 12 be f5 e8 ad 49 ea f5 fb bf 01 00 00 00 22 2c af f5 65 48 8b 05 ea 51 ae 07 48 85 c0 74 07 5b c3 cc cc
RSP: 0018:ffffc90005097ab0 EFLAGS: 00000206
RAX: 000000000001b1bd RBX: ffff88801b68b000 RCX: 8000000000000001
RDX: 0000000000000000 RSI: ffffffff8e4730be RDI: 0000000000000001
RBP: ffffc90005097ce0 R08: ffffffff907a027f R09: 1ffffffff20f404f
R10: dffffc0000000000 R11: fffffbfff20f4050 R12: dffffc0000000000
R13: ffffffff818f95da R14: 0000000000000001 R15: 0000000000000000
process_one_work kernel/workqueue.c:3353 [inline]
process_scheduled_works+0xa23/0x1630 kernel/workqueue.c:3470
rescuer_thread+0x7c5/0x10e0 kernel/workqueue.c:3694
kthread+0x38b/0x480 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