rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	1-...!: (1 GPs behind) idle=1dec/1/0x4000000000000000 softirq=12347/12365 fqs=83
	(detected by 0, t=10502 jiffies, g=13237, q=1283 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 4508 Comm: kworker/1:15 Not tainted 6.1.92-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Workqueue: wg-kex-wg0 wg_packet_handshake_receive_worker
RIP: 0010:variable_test_bit arch/x86/include/asm/bitops.h:228 [inline]
RIP: 0010:arch_test_bit arch/x86/include/asm/bitops.h:240 [inline]
RIP: 0010:_test_bit include/asm-generic/bitops/instrumented-non-atomic.h:142 [inline]
RIP: 0010:cpumask_test_cpu include/linux/cpumask.h:444 [inline]
RIP: 0010:cpu_online include/linux/cpumask.h:1030 [inline]
RIP: 0010:trace_hrtimer_expire_exit include/trace/events/timer.h:286 [inline]
RIP: 0010:__run_hrtimer kernel/time/hrtimer.c:1689 [inline]
RIP: 0010:__hrtimer_run_queues+0x673/0xe50 kernel/time/hrtimer.c:1750
Code: 93 d1 10 00 41 89 df 4c 89 f8 48 c1 e8 06 48 8d 3c c5 68 89 73 8e be 08 00 00 00 e8 87 52 68 00 31 db 4c 0f a3 3d 85 cd f9 0c <41> 0f 92 c7 0f 92 c3 bf 02 00 00 00 89 de e8 ba d3 10 00 31 ff 89
RSP: 0018:ffffc900001e0d60 EFLAGS: 00000047
RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffffffff8179bbd9
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8e738968
RBP: ffffc900001e0eb0 R08: dffffc0000000000 R09: fffffbfff1ce712e
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8880b992a4c0
R13: 0000000000000001 R14: ffff8880b992a4c0 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555566e5760 CR3: 0000000021641000 CR4: 00000000003526e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1812
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline]
 __sysvec_apic_timer_interrupt+0x156/0x580 arch/x86/kernel/apic/apic.c:1112
 sysvec_apic_timer_interrupt+0x8c/0xb0 arch/x86/kernel/apic/apic.c:1106
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653
RIP: 0010:poly1305_emit_x86_64+0x29/0x40 arch/x86/crypto/poly1305-x86_64-cryptogams.S:233
Code: 00 4c 8b 07 4c 8b 4f 08 4c 8b 57 10 4c 89 c0 49 83 c0 05 4c 89 c9 49 83 d1 00 49 83 d2 00 49 c1 ea 02 49 0f 45 c0 49 0f 45 c9 <48> 03 02 48 13 4a 08 48 89 06 48 89 4e 08 c3 0f 1f 84 00 00 00 00
RSP: 0018:ffffc9000345f1b8 EFLAGS: 00000246
RAX: 3a113785c2cf1da3 RBX: ffffc9000345f288 RCX: 4615ada4ab14e305
RDX: ffffc9000345f278 RSI: ffffc9000345f3f0 RDI: ffffc9000345f288
RBP: 1ffff9200068be4e R08: 3a113785c2cf1da8 R09: 4615ada4ab14e305
R10: 0000000000000000 R11: 0499370406ac8833 R12: ffffc9000345f260
R13: dffffc0000000000 R14: ffffc9000345f3f0 R15: ffffc9000345f278
 poly1305_simd_emit arch/x86/crypto/poly1305_glue.c:129 [inline]
 poly1305_final_arch+0x72/0x230 arch/x86/crypto/poly1305_glue.c:212
 poly1305_final include/crypto/poly1305.h:94 [inline]
 __chacha20poly1305_decrypt+0x252/0x330 lib/crypto/chacha20poly1305.c:157
 chacha20poly1305_decrypt+0x3d0/0x770 lib/crypto/chacha20poly1305.c:184
 message_decrypt drivers/net/wireguard/noise.c:477 [inline]
 wg_noise_handshake_consume_initiation+0x3f5/0xf60 drivers/net/wireguard/noise.c:612
 wg_receive_handshake_packet drivers/net/wireguard/receive.c:144 [inline]
 wg_packet_handshake_receive_worker+0x5b3/0xf00 drivers/net/wireguard/receive.c:213
 process_one_work+0x8a9/0x11d0 kernel/workqueue.c:2292
 worker_thread+0xa47/0x1200 kernel/workqueue.c:2439
 kthread+0x28d/0x320 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>
rcu: rcu_preempt kthread starved for 10334 jiffies! g13237 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:27032 pid:16    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5245 [inline]
 __schedule+0x142d/0x4550 kernel/sched/core.c:6558
 schedule+0xbf/0x180 kernel/sched/core.c:6634
 schedule_timeout+0x1b9/0x300 kernel/time/timer.c:1965
 rcu_gp_fqs_loop+0x2d2/0x1150 kernel/rcu/tree.c:1706
 rcu_gp_kthread+0xa3/0x3b0 kernel/rcu/tree.c:1905
 kthread+0x28d/0x320 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 PID: 3820 Comm: syz-executor.1 Not tainted 6.1.92-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
RIP: 0010:csd_lock_wait kernel/smp.c:424 [inline]
RIP: 0010:smp_call_function_many_cond+0x1fb0/0x3460 kernel/smp.c:998
Code: 2f 44 89 ee 83 e6 01 31 ff e8 ec 42 0b 00 41 83 e5 01 49 bd 00 00 00 00 00 fc ff df 75 0a e8 77 3f 0b 00 e9 1b ff ff ff f3 90 <42> 0f b6 04 2b 84 c0 75 14 41 f7 07 01 00 00 00 0f 84 fe fe ff ff
RSP: 0018:ffffc90004ab7100 EFLAGS: 00000293
RAX: ffffffff817f4dfb RBX: 1ffff110173281b1 RCX: ffff8880221dbb80
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90004ab74e0 R08: ffffffff817f4dc4 R09: fffff52000956e11
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000800000000
R13: dffffc0000000000 R14: 0000000000000001 R15: ffff8880b9940d88
FS:  0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1dfaae5000 CR3: 0000000074bb3000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 </IRQ>
 <TASK>
 on_each_cpu_cond_mask+0x3b/0x80 kernel/smp.c:1166
 __flush_tlb_multi arch/x86/include/asm/paravirt.h:87 [inline]
 flush_tlb_multi arch/x86/mm/tlb.c:924 [inline]
 flush_tlb_mm_range+0x353/0x590 arch/x86/mm/tlb.c:1010
 tlb_flush arch/x86/include/asm/tlb.h:20 [inline]
 tlb_flush_mmu_tlbonly+0x1ab/0x410 include/asm-generic/tlb.h:430
 tlb_flush_mmu+0x28/0x210 mm/mmu_gather.c:260
 tlb_finish_mmu+0xce/0x1f0 mm/mmu_gather.c:361
 exit_mmap+0x3c3/0x9f0 mm/mmap.c:3239
 __mmput+0x115/0x3c0 kernel/fork.c:1199
 exit_mm+0x226/0x300 kernel/exit.c:563
 do_exit+0x9f6/0x26a0 kernel/exit.c:856
 do_group_exit+0x202/0x2b0 kernel/exit.c:1019
 get_signal+0x16f7/0x17d0 kernel/signal.c:2862
 arch_do_signal_or_restart+0xb0/0x1a10 arch/x86/kernel/signal.c:871
 exit_to_user_mode_loop+0x6a/0x100 kernel/entry/common.c:174
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:210
 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
 syscall_exit_to_user_mode+0x60/0x270 kernel/entry/common.c:303
 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:87
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f79c02a82f5
Code: Unable to access opcode bytes at 0x7f79c02a82cb.
RSP: 002b:00007ffcf1168540 EFLAGS: 00000293 ORIG_RAX: 00000000000000e6
RAX: 0000000000000000 RBX: 00000000000000a6 RCX: 00007f79c02a82f5
RDX: 00007ffcf1168580 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007ffcf116860c R08: 0000000000000000 R09: 0000000000000010
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000064
R13: 000000000001c8d5 R14: 000000000001a2c1 R15: 0000000000000001
 </TASK>