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: Tasks blocked on level-0 rcu_node (CPUs 0-1): P13059/1:b..l P5358/2:b..l
rcu: (detected by 1, t=10502 jiffies, g=68045, q=1720 ncpus=2)
task:kworker/0:3 state:R running task stack:24256 pid:5358 tgid:5358 ppid:2 task_flags:0x4208060 flags:0x00080000
Workqueue: events vmstat_shepherd
Call Trace:
context_switch kernel/sched/core.c:5510 [inline]
__schedule+0x17d9/0x56c0 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
work_busy+0x229/0x2d0 kernel/workqueue.c:6282
vmstat_shepherd+0x15b/0x230 mm/vmstat.c:2144
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
task:udevd state:R running task stack:27480 pid:13059 tgid:13059 ppid:4992 task_flags:0x40014c 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:lock_acquire+0x221/0x350 kernel/locking/lockdep.c:5872
Code: ff ff ff e8 61 ef 2c 0a f7 44 24 08 00 02 00 00 0f 84 3a ff ff ff 65 48 8b 05 4b 5a ca 11 48 3b 44 24 58 75 33 fb 48 83 c4 60 <5b> 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc 48 8d 3d 98 dd b8
RSP: 0018:ffffc9000d8f7288 EFLAGS: 00000286
RAX: 24f3e6ad4bc18a00 RBX: 0000000000000000 RCX: 0000000000000046
RDX: 000000004c6917e0 RSI: ffffffff8e4af5f8 RDI: ffffffff8c4bd380
RBP: ffffffff8176f27f R08: ffffffff8176f27f R09: 0000000000000000
R10: 0000000000000000 R11: ffffffff8eb59c60 R12: 0000000000000002
R13: ffffffff8eb59c60 R14: 0000000000000000 R15: 0000000000000246
rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
rcu_read_lock include/linux/rcupdate.h:840 [inline]
class_rcu_constructor include/linux/rcupdate.h:1183 [inline]
unwind_next_frame+0xac/0x2550 arch/x86/kernel/unwind_orc.c:495
__unwind_start+0x514/0x660 arch/x86/kernel/unwind_orc.c:787
unwind_start arch/x86/include/asm/unwind.h:64 [inline]
arch_stack_walk+0xe3/0x150 arch/x86/kernel/stacktrace.c:24
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
unpoison_slab_object mm/kasan/common.c:340 [inline]
__kasan_slab_alloc+0x6c/0x80 mm/kasan/common.c:366
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_noprof+0x2a0/0x5f0 mm/slub.c:4959
kmem_alloc_batch lib/debugobjects.c:371 [inline]
fill_pool+0x165/0x610 lib/debugobjects.c:420
debug_objects_fill_pool lib/debugobjects.c:780 [inline]
debug_object_activate+0x38d/0x420 lib/debugobjects.c:869
debug_rcu_head_queue kernel/rcu/rcu.h:236 [inline]
__call_rcu_common kernel/rcu/tree.c:3144 [inline]
call_rcu+0x43/0x8b0 kernel/rcu/tree.c:3279
slab_free_hook mm/slub.c:2669 [inline]
slab_free mm/slub.c:6405 [inline]
kmem_cache_free+0x462/0x650 mm/slub.c:6532
tear_down_vmas+0x312/0x520 mm/mmap.c:1262
exit_mmap+0x4ca/0x9f0 mm/mmap.c:1320
__mmput+0x118/0x420 kernel/fork.c:1187
exit_mm+0x221/0x2d0 kernel/exit.c:610
do_exit+0x6cd/0x2360 kernel/exit.c:992
do_group_exit+0x22d/0x2f0 kernel/exit.c:1147
__do_sys_exit_group kernel/exit.c:1158 [inline]
__se_sys_exit_group kernel/exit.c:1156 [inline]
__x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1156
x64_sys_call+0x221a/0x2240 arch/x86/include/generated/asm/syscalls_64.h:232
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa155cf16c5
RSP: 002b:00007ffcd9b9f1f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 000055cd55ba28e0 RCX: 00007fa155cf16c5
RDX: 00000000000000e7 RSI: fffffffffffffe68 RDI: 0000000000000000
RBP: 000055cd55b67910 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffcd9b9f240 R14: 0000000000000000 R15: 0000000000000000
rcu: rcu_preempt kthread starved for 9443 jiffies! g68045 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:27656 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
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:lock_timer_base kernel/time/timer.c:1000 [inline]
RIP: 0010:__try_to_del_timer_sync kernel/time/timer.c:1459 [inline]
RIP: 0010:__timer_delete_sync+0x18f/0x520 kernel/time/timer.c:1621
Code: e7 49 83 c4 20 4c 89 e3 49 c1 ec 03 48 89 3c 24 48 c7 c6 80 66 ef 8b e8 3f ba 2b 03 eb 07 e8 b8 19 14 00 f3 90 43 0f b6 04 3c <84> c0 0f 85 f0 00 00 00 44 8b 2b 44 89 ee 81 e6 00 00 04 00 31 ff
RSP: 0018:ffffc90000157a98 EFLAGS: 00000296
RAX: 0000000000000000 RBX: ffffc90000157b20 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffffffff8e22a5a0 RDI: 00000000ffffffff
RBP: ffffc90000157bd0 R08: ffffffff905775f7 R09: 1ffffffff20aeebe
R10: dffffc0000000000 R11: fffffbfff20aeebf R12: 1ffff9200002af64
R13: ffffc90000157b00 R14: 0000000000000000 R15: dffffc0000000000
schedule_timeout+0x15a/0x2c0 kernel/time/sleep_timeout.c:100
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: 5358 Comm: kworker/0:3 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Workqueue: events_long defense_work_handler
RIP: 0010:advance_sched+0xb1d/0xc80 net/sched/sch_taprio.c:996
Code: be 66 03 00 00 48 c7 c2 40 86 05 8d e8 fc cb c5 f7 48 c7 c7 60 9c b5 8e 48 89 de e8 7d b2 c5 f7 e8 48 61 cf f7 b8 01 00 00 00 <48> 81 c4 90 00 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc
RSP: 0018:ffffc90000006d68 EFLAGS: 00000087
RAX: 0000000000000001 RBX: ffffffff89dca0f8 RCX: 0000000080010102
RDX: 0000000000000005 RSI: ffffffff8e4af5f8 RDI: ffff88802e265d00
RBP: 0000000000000001 R08: ffff88807ccc519f R09: 1ffff1100f998a33
R10: dffffc0000000000 R11: ffffed100f998a34 R12: ffff888032652800
R13: ffff88807ccc5000 R14: dffffc0000000000 R15: ffff88807ccc5340
FS: 0000000000000000(0000) GS:ffff888124f58000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0dc6dcdff8 CR3: 0000000056cdc000 CR4: 00000000003526f0
Call Trace:
__run_hrtimer kernel/time/hrtimer.c:2032 [inline]
__hrtimer_run_queues+0x3bc/0xa10 kernel/time/hrtimer.c:2096
hrtimer_interrupt+0x448/0x910 kernel/time/hrtimer.c:2215
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1051 [inline]
__sysvec_apic_timer_interrupt+0x102/0x430 arch/x86/kernel/apic/apic.c:1068
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline]
sysvec_apic_timer_interrupt+0x52/0xc0 arch/x86/kernel/apic/apic.c:1062
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:check_preemption_disabled+0x1/0xe0 lib/smp_processor_id.c:13
Code: 20 d3 4b 8c 48 c7 c6 60 d3 4b 8c eb 1c 66 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 55 <41> 57 41 56 53 65 8b 05 f7 4d 9d 07 65 8b 0d ec 4d 9d 07 f7 c1 ff
RSP: 0018:ffffc90000007110 EFLAGS: 00000282
RAX: ffffffff8a77549f RBX: 0000000000000000 RCX: 0000000000000100
RDX: ffff88802e265d00 RSI: ffffffff8c4bd360 RDI: ffffffff8c4bd320
RBP: ffffc90000007250 R08: ffff88802e265d00 R09: 0000000000000004
R10: 0000000000000003 R11: 0000000000000100 R12: 1ffff92000000e30
R13: ffffc900000071a0 R14: 0000000000000001 R15: dffffc0000000000
rcu_is_watching_curr_cpu include/linux/context_tracking.h:128 [inline]
rcu_is_watching+0x15/0xb0 kernel/rcu/tree.c:752
rcu_read_unlock include/linux/rcupdate.h:869 [inline]
nf_hook include/linux/netfilter.h:275 [inline]
NF_HOOK+0x259/0x3c0 include/linux/netfilter.h:316
__netif_receive_skb_one_core net/core/dev.c:6212 [inline]
__netif_receive_skb net/core/dev.c:6325 [inline]
netif_receive_skb_internal net/core/dev.c:6411 [inline]
netif_receive_skb+0x278/0xbf0 net/core/dev.c:6470
NF_HOOK+0xa4/0x3a0 include/linux/netfilter.h:318
br_handle_frame_finish+0x1192/0x1990 net/bridge/br_input.c:-1
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:318 [inline]
br_nf_pre_routing_ipv6+0x382/0x6f0 net/bridge/br_netfilter_ipv6.c:183
nf_hook_entry_hookfn include/linux/netfilter.h:158 [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+0x989/0x30b0 net/core/dev.c:6099
__netif_receive_skb_one_core net/core/dev.c:6210 [inline]
__netif_receive_skb net/core/dev.c:6325 [inline]
process_backlog+0x706/0x1860 net/core/dev.c:6676
__napi_poll+0xaa/0x330 net/core/dev.c:7735
napi_poll net/core/dev.c:7798 [inline]
net_rx_action+0x61d/0xf50 net/core/dev.c:7955
handle_softirqs+0x225/0x840 kernel/softirq.c:622
do_softirq+0x76/0xd0 kernel/softirq.c:523
__local_bh_enable_ip+0xf8/0x130 kernel/softirq.c:450
local_bh_enable include/linux/bottom_half.h:33 [inline]
update_defense_level+0x867/0xcb0 net/netfilter/ipvs/ip_vs_ctl.c:210
defense_work_handler+0x2d/0xd0 net/netfilter/ipvs/ip_vs_ctl.c:235
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: 35544 callbacks suppressed
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:aa:aa:aa:aa:aa:0c, 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)
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)
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:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:a6:b6:f2:c6:ff:be, vlan:0)
bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:1c, vlan:0)
net_ratelimit: 48658 callbacks suppressed
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:aa:aa:aa:aa:aa:0c, 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: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)
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: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 bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)