rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P14832/1:b..l
rcu: (detected by 1, t=10503 jiffies, g=166281, q=2128 ncpus=2)
task:kworker/1:9 state:R running task stack:22448 pid:14832 tgid:14832 ppid:2 task_flags:0x4208060 flags:0x00080000
Workqueue: wg-kex-wg2 wg_packet_handshake_receive_worker
Call Trace:
context_switch kernel/sched/core.c:5504 [inline]
__schedule+0x17d9/0x56c0 kernel/sched/core.c:7228
preempt_schedule_irq+0x4d/0xa0 kernel/sched/core.c:7552
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:unwind_next_frame+0x48e/0x2550 arch/x86/kernel/unwind_orc.c:520
Code: d8 48 c1 e8 03 42 0f b6 04 20 84 c0 0f 85 b4 19 00 00 4c 89 e8 48 c1 e8 03 42 0f b6 04 20 84 c0 0f 85 bf 19 00 00 0f b6 43 01 <83> e0 07 0f 84 7c 16 00 00 83 f8 01 4c 8b 6c 24 50 49 bc 00 00 00
RSP: 0018:ffffc90003237180 EFLAGS: 00000246
RAX: 0000000000000002 RBX: ffffffff90d3a032 RCX: ffffffff9053547c
RDX: ffffffff90d3a02e RSI: ffffffff90d3a02e RDI: ffffffff8c2953c0
RBP: ffffffff8225109e R08: 0000000000000001 R09: 0000000000000000
R10: ffffc90003237278 R11: ffffffff81b12860 R12: dffffc0000000000
R13: ffffffff90d3a033 R14: ffffc90003237228 R15: ffffffff9053547c
arch_stack_walk+0x11b/0x150 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0xa9/0x100 kernel/stacktrace.c:122
save_stack+0x122/0x230 mm/page_owner.c:165
__reset_page_owner+0x71/0x1f0 mm/page_owner.c:320
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1406 [inline]
__free_frozen_pages+0xc1f/0xd10 mm/page_alloc.c:2950
__slab_free+0x274/0x2c0 mm/slub.c:5672
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:4610 [inline]
slab_alloc_node mm/slub.c:4939 [inline]
__kmalloc_cache_noprof+0x2b6/0x660 mm/slub.c:5446
_kmalloc_noprof include/linux/slab.h:969 [inline]
_kzalloc_noprof include/linux/slab.h:1286 [inline]
keypair_create drivers/net/wireguard/noise.c:100 [inline]
wg_noise_handshake_begin_session+0xd4/0xbf0 drivers/net/wireguard/noise.c:827
wg_packet_send_handshake_response+0x137/0x2d0 drivers/net/wireguard/send.c:96
wg_receive_handshake_packet drivers/net/wireguard/receive.c:154 [inline]
wg_packet_handshake_receive_worker+0x6a9/0x10c0 drivers/net/wireguard/receive.c:213
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 3848 jiffies! g166281 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:28040 pid:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5504 [inline]
__schedule+0x17d9/0x56c0 kernel/sched/core.c:7228
__schedule_loop kernel/sched/core.c:7307 [inline]
schedule+0x164/0x360 kernel/sched/core.c:7322
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:
CPU: 1 UID: 0 PID: 19879 Comm: kworker/R-bond2 Tainted: G L syzkaller #0 PREEMPT(full)
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Workqueue: bond2 bond_3ad_state_machine_handler
RIP: 0010:check_kcov_mode kernel/kcov.c:183 [inline]
RIP: 0010:write_comp_data kernel/kcov.c:246 [inline]
RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x2e/0x90 kernel/kcov.c:314
Code: 48 8b 04 24 65 48 8b 15 08 97 76 11 65 8b 0d 29 97 76 11 81 e1 00 01 ff 00 74 11 81 f9 00 01 00 00 75 5b 83 ba 1c 17 00 00 00 <74> 52 8b 8a f8 16 00 00 83 f9 03 75 47 48 8b 8a 00 17 00 00 44 8b
RSP: 0018:ffffc90000a08198 EFLAGS: 00000246
RAX: ffffffff8a5ce09a RBX: 0000000000000001 RCX: 0000000000000100
RDX: ffff888037781f00 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000a082f8 R08: ffffc90000a08420 R09: ffffc90000a08430
R10: ffffc90000a08280 R11: fffff52000141052 R12: 1ffff1100706548c
R13: dffffc0000000000 R14: ffff88803832a400 R15: ffffc90000a083f8
FS: 0000000000000000(0000) GS:ffff888125353000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000000b9030 CR3: 000000007f370000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 000000000000000c DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
fib6_check_expired include/net/ip6_fib.h:271 [inline]
__find_rr_leaf+0x18a/0x740 net/ipv6/route.c:847
find_rr_leaf net/ipv6/route.c:893 [inline]
rt6_select net/ipv6/route.c:937 [inline]
fib6_table_lookup+0x3c6/0xae0 net/ipv6/route.c:2255
ip6_pol_route+0x229/0x14d0 net/ipv6/route.c:2292
pol_lookup_func include/net/ip6_fib.h:669 [inline]
__fib6_rule_action net/ipv6/fib6_rules.c:240 [inline]
fib6_rule_action+0x9d7/0xc00 net/ipv6/fib6_rules.c:278
fib_rules_lookup+0x770/0xeb0 net/core/fib_rules.c:340
fib6_rule_lookup+0x1a0/0x730 net/ipv6/fib6_rules.c:115
ip6_route_input_lookup net/ipv6/route.c:2363 [inline]
ip6_route_input+0x78d/0xb20 net/ipv6/route.c:2666
ip6_rcv_finish+0x141/0x280 net/ipv6/ip6_input.c:117
NF_HOOK+0x336/0x3c0 include/linux/netfilter.h:318
__netif_receive_skb_one_core net/core/dev.c:6206 [inline]
__netif_receive_skb net/core/dev.c:6319 [inline]
process_backlog+0x774/0x1860 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+0x76/0xd0 kernel/softirq.c:523
__local_bh_enable_ip+0xf8/0x130 kernel/softirq.c:450
spin_unlock_bh include/linux/spinlock.h:396 [inline]
bond_3ad_state_machine_handler+0x5a7c/0x5d60 drivers/net/bonding/bond_3ad.c:2618
process_one_work kernel/workqueue.c:3322 [inline]
process_scheduled_works+0xa8e/0x14e0 kernel/workqueue.c:3405
rescuer_thread+0x7b6/0x10b0 kernel/workqueue.c:3629
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: 23516 callbacks suppressed
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)