IPVS: Schedule: port zero only supported in persistent services, check your ipvs configuration
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P13370/1:b..l
rcu: (detected by 0, t=10503 jiffies, g=186661, q=2975 ncpus=2)
task:kworker/0:4 state:R running task stack:20672 pid:13370 tgid:13370 ppid:2 task_flags:0x4208060 flags:0x00080000
Workqueue: events_power_efficient gc_worker
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:seqcount_lockdep_reader_access+0xed/0x100 include/linux/seqlock.h:76
Code: 00 75 11 e8 15 ca d7 f7 4d 85 f6 75 16 e8 0b ca d7 f7 eb 15 e8 04 ca d7 f7 e8 1f 7e e1 01 4d 85 f6 74 ea e8 f5 c9 d7 f7 fb 5b <41> 5e c3 cc cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90
RSP: 0018:ffffc9000dabf990 EFLAGS: 00000293
RAX: ffffffff89ef376b RBX: 0000000000000001 RCX: ffff888051d01f00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000dabfaf0 R08: ffffffff90574837 R09: 1ffffffff20ae906
R10: dffffc0000000000 R11: fffffbfff20ae907 R12: ffff888076626a18
R13: dffffc0000000000 R14: 0000000000000200 R15: 000000000001f4e8
nf_conntrack_get_ht include/net/netfilter/nf_conntrack.h:343 [inline]
gc_worker+0x31b/0x1890 net/netfilter/nf_conntrack_core.c:1534
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
rcu: rcu_preempt kthread starved for 1983 jiffies! g186661 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
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:28192 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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Tainted: G L syzkaller #0 PREEMPT(full)
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:__lock_acquire+0x80a/0x2cf0 kernel/locking/lockdep.c:-1
Code: 6d 03 eb c3 89 e8 25 ff 1f 00 00 c1 ed 03 81 e5 00 60 00 00 09 c5 48 89 d8 48 c1 e8 20 29 c5 89 c1 c1 c1 04 31 e9 01 d8 29 cb <89> ca c1 c2 06 31 da 01 c1 29 d0 89 d6 c1 c6 08 31 c6 01 ca 29 f1
RSP: 0018:ffffc90000a07bd8 EFLAGS: 00000093
RAX: 0000000036198be1 RBX: 00000000e635ddfd RCX: 000000005ae1aee6
RDX: 0000000000000008 RSI: ffff88801e2a0bf0 RDI: ffff88801e2a0000
RBP: 000000000afe4109 R08: ffffffff8177827f R09: 0000000000000000
R10: 0000000000000000 R11: ffffffff8eb59c60 R12: ffff88801e2a0bf0
R13: ffff88801e2a0bf0 R14: ffff88801e2a0000 R15: 0000000000000002
FS: 0000000000000000(0000) GS:ffff888125055000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055558b2e54e8 CR3: 000000005c128000 CR4: 00000000003526f0
Call Trace:
lock_acquire+0x106/0x350 kernel/locking/lockdep.c:5868
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
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
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:4584 [inline]
slab_alloc_node mm/slub.c:4917 [inline]
kmem_cache_alloc_node_noprof+0x355/0x610 mm/slub.c:4989
__alloc_skb+0x1d7/0x7a0 net/core/skbuff.c:704
alloc_skb include/linux/skbuff.h:1384 [inline]
synproxy_send_client_synack+0x175/0xde0 net/netfilter/nf_synproxy_core.c:463
nft_synproxy_eval_v4+0x362/0x4e0 net/netfilter/nft_synproxy.c:59
nft_synproxy_do_eval+0x335/0x550 net/netfilter/nft_synproxy.c:141
expr_call_ops_eval net/netfilter/nf_tables_core.c:237 [inline]
nft_do_chain+0x48d/0x1b10 net/netfilter/nf_tables_core.c:285
nft_do_chain_inet+0x360/0x4b0 net/netfilter/nft_chain_filter.c:162
nf_hook_entry_hookfn include/linux/netfilter.h:158 [inline]
nf_hook_slow+0xc5/0x220 net/netfilter/core.c:619
nf_hook include/linux/netfilter.h:273 [inline]
NF_HOOK+0x21f/0x3c0 include/linux/netfilter.h:316
NF_HOOK+0x336/0x3c0 include/linux/netfilter.h:318
__netif_receive_skb_one_core net/core/dev.c:6212 [inline]
__netif_receive_skb net/core/dev.c:6325 [inline]
process_backlog+0xa34/0x1860 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 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:pv_native_safe_halt+0xf/0x20 arch/x86/kernel/paravirt.c:64
Code: cb 7e 02 c3 cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d b3 be 18 00 fb f4 4c 07 03 00 cc cc cc cc cc cc cc cc cc cc cc cc 90 90 90 90 90
RSP: 0018:ffffc90000197e40 EFLAGS: 00000242
RAX: 0000000002324a37 RBX: ffffffff819b433c RCX: 0000000080000001
RDX: 0000000000000001 RSI: ffffffff8e228edb RDI: ffffffff8c4bbf80
RBP: ffffc90000197f10 R08: ffff8880b87338db R09: 1ffff110170e671b
R10: dffffc0000000000 R11: ffffed10170e671c R12: 0000000000000000
R13: 1ffff11003c54000 R14: 1ffff92000032fd0 R15: dffffc0000000000
arch_safe_halt arch/x86/kernel/process.c:767 [inline]
default_idle+0x9/0x20 arch/x86/kernel/process.c:768
default_idle_call+0x72/0xb0 kernel/sched/idle.c:122
cpuidle_idle_call kernel/sched/idle.c:199 [inline]
do_idle+0x1cc/0x540 kernel/sched/idle.c:355
cpu_startup_entry+0x43/0x60 kernel/sched/idle.c:454
start_secondary+0x101/0x110 arch/x86/kernel/smpboot.c:312
common_startup_64+0x13e/0x157
IPVS: Schedule: port zero only supported in persistent services, check your ipvs configuration
IPVS: Schedule: port zero only supported in persistent services, check your ipvs configuration
IPVS: Schedule: port zero only supported in persistent services, check your ipvs configuration
IPVS: Schedule: port zero only supported in persistent services, check your ipvs configuration
IPVS: Schedule: port zero only supported in persistent services, check your ipvs configuration
IPVS: Schedule: port zero only supported in persistent services, check your ipvs configuration
IPVS: Schedule: port zero only supported in persistent services, check your ipvs configuration
IPVS: Schedule: port zero only supported in persistent services, check your ipvs configuration
IPVS: Schedule: port zero only supported in persistent services, check your ipvs configuration
IPVS: Schedule: port zero only supported in persistent services, check your ipvs configuration
IPVS: Schedule: port zero only supported in persistent services, check your ipvs configuration
IPVS: Schedule: port zero only supported in persistent services, check your ipvs configuration
IPVS: Schedule: port zero only supported in persistent services, check your ipvs configuration
IPVS: Schedule: port zero only supported in persistent services, check your ipvs configuration
IPVS: Schedule: port zero only supported in persistent services, check your ipvs configuration
IPVS: Schedule: port zero only supported in persistent services, check your ipvs configuration
IPVS: Schedule: port zero only supported in persistent services, check your ipvs configuration
IPVS: Schedule: port zero only supported in persistent services, check your ipvs configuration
IPVS: Schedule: port zero only supported in persistent services, check your ipvs configuration
IPVS: Schedule: port zero only supported in persistent services, check your ipvs configuration
IPVS: Schedule: port zero only supported in persistent services, check your ipvs configuration
IPVS: Schedule: port zero only supported in persistent services, check your ipvs configuration
IPVS: Schedule: port zero only supported in persistent services, check your ipvs configuration
IPVS: Schedule: port zero only supported in persistent services, check your ipvs configuration
IPVS: Schedule: port zero only supported in persistent services, check your ipvs configuration
IPVS: Schedule: port zero only supported in persistent services, check your ipvs configuration
IPVS: Schedule: port zero only supported in persistent services, check your ipvs configuration
IPVS: Schedule: port zero only supported in persistent services, check your ipvs configuration
IPVS: Schedule: port zero only supported in persistent services, check your ipvs configuration
IPVS: Schedule: port zero only supported in persistent services, check your ipvs configuration
IPVS: Schedule: port zero only supported in persistent services, check your ipvs configuration
IPVS: Schedule: port zero only supported in persistent services, check your ipvs configuration
IPVS: Schedule: port zero only supported in persistent services, check your ipvs configuration
IPVS: Schedule: port zero only supported in persistent services, check your ipvs configuration
IPVS: Schedule: port zero only supported in persistent services, check your ipvs configuration
IPVS: Schedule: port zero only supported in persistent services, check your ipvs configuration