net_ratelimit: 88 callbacks suppressed
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P5613/1:b..l
rcu: (detected by 1, t=10502 jiffies, g=139737, q=1204037 ncpus=2)
task:syz-executor state:R running task stack:21640 pid:5613 tgid:5613 ppid:1 task_flags:0x40054c flags:0x00080002
Call Trace:
context_switch kernel/sched/core.c:5533 [inline]
__schedule+0x17db/0x58f0 kernel/sched/core.c:7284
preempt_schedule_common+0x7f/0xd0 kernel/sched/core.c:7463
preempt_schedule_thunk+0x16/0x40 arch/x86/entry/thunk.S:12
__raw_spin_unlock include/linux/spinlock_api_smp.h:201 [inline]
_raw_spin_unlock+0x41/0x50 kernel/locking/spinlock.c:213
spin_unlock include/linux/spinlock.h:401 [inline]
zap_pte_range mm/memory.c:2095 [inline]
zap_pmd_range mm/memory.c:2151 [inline]
zap_pud_range mm/memory.c:2179 [inline]
zap_p4d_range mm/memory.c:2200 [inline]
__zap_vma_range+0x40e1/0x4f80 mm/memory.c:2240
unmap_vmas+0x390/0x550 mm/memory.c:2309
exit_mmap+0x293/0x9f0 mm/mmap.c:1315
__mmput+0x118/0x420 kernel/fork.c:1193
exit_mm+0x18e/0x240 kernel/exit.c:592
do_exit+0x6cd/0x2360 kernel/exit.c:974
do_group_exit+0x22d/0x2f0 kernel/exit.c:1129
get_signal+0x121b/0x12c0 kernel/signal.c:3112
arch_do_signal_or_restart+0xbb/0x860 arch/x86/kernel/signal.c:337
__exit_to_user_mode_loop kernel/entry/common.c:66 [inline]
exit_to_user_mode_loop+0x10e/0x770 kernel/entry/common.c:101
__exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline]
syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline]
syscall_exit_to_user_mode include/linux/entry-common.h:343 [inline]
do_syscall_64+0x328/0x520 arch/x86/entry/syscall_64.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3ebef5e9ce
RSP: 002b:00007ffdf46ca6b8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e6
RAX: 0000000000000000 RBX: 000055555f8a6500 RCX: 00007f3ebef5e9ce
RDX: 00007ffdf46ca710 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007ffdf46ca77c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000000030b
R13: 0000000000000049 R14: 00000000000d9fd7 R15: 00007ffdf46ca7d0
rcu: rcu_preempt kthread starved for 866 jiffies! g139737 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:5533 [inline]
__schedule+0x17db/0x58f0 kernel/sched/core.c:7284
__schedule_loop kernel/sched/core.c:7361 [inline]
schedule+0x164/0x2b0 kernel/sched/core.c:7376
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: 19921 Comm: kworker/u8:0 Tainted: G L syzkaller #0 PREEMPT(full)
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/05/2026
Workqueue: wg-kex-wg2 wg_packet_handshake_send_worker
RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:37 [inline]
RIP: 0010:preempt_count_add+0x3f/0x140 kernel/sched/core.c:6011
Code: c7 65 48 01 05 c2 94 00 12 48 c7 c0 40 e5 9e 9a 48 c1 e8 03 42 0f b6 04 38 84 c0 0f 85 b8 00 00 00 83 3d d3 d9 09 19 00 75 12 <65> 48 8b 05 99 94 00 12 0f b6 c0 3d f5 00 00 00 73 59 65 48 8b 05
RSP: 0018:ffffc900000074d8 EFLAGS: 00000046
RAX: 0000000000000004 RBX: ffff8880b8628280 RCX: ffffffff9a9ee503
RDX: 8000000001000101 RSI: 0000000001000101 RDI: 0000000000000001
RBP: ffff88806758f300 R08: 0000000001000101 R09: 1ffffffff20f4caf
R10: dffffc0000000000 R11: fffffbfff20f4cb0 R12: ffff8880b8628280
R13: 0000000000000001 R14: ffff8880b86284a0 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff888124cc6000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f16d3825f40 CR3: 0000000078115000 CR4: 0000000000350ef0
Call Trace:
__raw_spin_lock_irq include/linux/spinlock_api_smp.h:164 [inline]
_raw_spin_lock_irq+0x21/0x50 kernel/locking/spinlock.c:189
__run_hrtimer kernel/time/hrtimer.c:2078 [inline]
__hrtimer_run_queues+0x466/0xa10 kernel/time/hrtimer.c:2131
hrtimer_interrupt+0x4cd/0xaa0 kernel/time/hrtimer.c:2250
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:nf_nat_inet_fn+0x225/0xb50 net/netfilter/nf_nat_core.c:913
Code: eb 0f e8 1e 13 bd f7 e9 05 07 00 00 e8 14 13 bd f7 45 31 ed 48 8b 5c 24 18 89 df 48 c7 c6 c0 83 2e 90 e8 6e 19 bd f7 83 fb 01 <4c> 89 74 24 30 7e 1d 83 fb 02 74 30 83 fb 04 74 32 83 fb 03 0f 85
RSP: 0018:ffffc90000007800 EFLAGS: 00000202
RAX: 0000000000000005 RBX: 0000000000000003 RCX: 0000000000000005
RDX: ffffffff8a0afc42 RSI: ffffffff902e83c0 RDI: 0000000000000003
RBP: ffffc90000007928 R08: ffff8880301c3e80 R09: 0000000000000005
R10: 0000000000000004 R11: 8000000000000100 R12: ffffc90000007a00
R13: 0000000000000000 R14: 1ffff92000000f0c R15: dffffc0000000000
nf_nat_ipv4_fn net/netfilter/nf_nat_proto.c:583 [inline]
nf_nat_ipv4_local_in+0x1ec/0x720 net/netfilter/nf_nat_proto.c:671
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+0x21f/0x3c0 include/linux/netfilter.h:323
NF_HOOK+0x336/0x3c0 include/linux/netfilter.h:325
__netif_receive_skb_one_core net/core/dev.c:6297 [inline]
__netif_receive_skb net/core/dev.c:6410 [inline]
process_backlog+0xa6b/0x18b0 net/core/dev.c:6761
__napi_poll+0xaa/0x330 net/core/dev.c:7830
napi_poll net/core/dev.c:7893 [inline]
net_rx_action+0x61d/0xf50 net/core/dev.c:8050
handle_softirqs+0x226/0x860 kernel/softirq.c:645
do_softirq+0x77/0xd0 kernel/softirq.c:546
__local_bh_enable_ip+0x100/0x140 kernel/softirq.c:473
blake2s_compress+0xfa/0x1c00 lib/crypto/x86/blake2s.h:42
blake2s_update+0x140/0x450 lib/crypto/blake2s.c:119
hmac+0x2d1/0x3b0 drivers/net/wireguard/noise.c:332
kdf+0x12d/0x290 drivers/net/wireguard/noise.c:367
mix_dh drivers/net/wireguard/noise.c:413 [inline]
wg_noise_handshake_create_initiation+0x29e/0x810 drivers/net/wireguard/noise.c:550
wg_packet_send_handshake_initiation drivers/net/wireguard/send.c:34 [inline]
wg_packet_handshake_send_worker+0x18c/0x370 drivers/net/wireguard/send.c:51
process_one_work kernel/workqueue.c:3396 [inline]
process_scheduled_works+0xc3d/0x1630 kernel/workqueue.c:3479
worker_thread+0xa47/0xfb0 kernel/workqueue.c:3560
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