rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	1-...!: (2 ticks this GP) idle=c344/1/0x4000000000000000 softirq=76211/76211 fqs=0
	(detected by 0, t=10502 jiffies, g=123513, q=698 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 22 Comm: kworker/1:0 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:__kasan_check_read+0x0/0x10 mm/kasan/shadow.c:31
Code: d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 48 c7 c7 f5 dc 90 8c eb 0a 48 c7 c7 2d dd 90 8c 4c 89 fe e8 56 f6 a6 08 31 db eb d7 cc cc <89> f6 48 8b 0c 24 31 d2 e9 d3 ec ff ff 0f 1f 00 89 f6 48 8b 0c 24
RSP: 0018:ffffc900001e09f8 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000080000
RDX: dffffc0000000000 RSI: 0000000000000008 RDI: ffffffff9049c220
RBP: ffff888012714644 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff888012714658
R13: ffff888012713b80 R14: 0000000000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c0007dbfc0 CR3: 000000000ce8e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000006161 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 instrument_atomic_read include/linux/instrumented.h:72 [inline]
 _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
 hlock_class kernel/locking/lockdep.c:228 [inline]
 check_wait_context kernel/locking/lockdep.c:4723 [inline]
 __lock_acquire+0x495/0x1f80 kernel/locking/lockdep.c:4999
 lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0xd1/0x120 kernel/locking/spinlock.c:162
 debug_object_deactivate+0x63/0x380 lib/debugobjects.c:752
 debug_hrtimer_deactivate kernel/time/hrtimer.c:425 [inline]
 debug_deactivate+0x1d/0x280 kernel/time/hrtimer.c:481
 __run_hrtimer kernel/time/hrtimer.c:1654 [inline]
 __hrtimer_run_queues+0x334/0xe50 kernel/time/hrtimer.c:1750
 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:fmul2 arch/x86/crypto/curve25519-x86_64.c:296 [inline]
RIP: 0010:point_add_and_double arch/x86/crypto/curve25519-x86_64.c:1006 [inline]
RIP: 0010:montgomery_ladder arch/x86/crypto/curve25519-x86_64.c:1098 [inline]
RIP: 0010:curve25519_ever64 arch/x86/crypto/curve25519-x86_64.c:1252 [inline]
RIP: 0010:curve25519_arch+0x1f07/0x5700 arch/x86/crypto/curve25519-x86_64.c:1599
Code: 45 31 d2 4d 89 04 24 c4 62 ab f6 5f 08 f3 4d 0f 38 f6 d1 4d 89 54 24 08 c4 62 e3 f6 6f 10 f3 49 0f 38 f6 db c4 e2 8b f6 57 18 <f3> 4d 0f 38 f6 f5 48 c7 c0 00 00 00 00 f3 48 0f 38 f6 c2 48 8b 51
RSP: 0018:ffffc900001c70c0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 8c0b1ea1a93d0eb9 RCX: ffffc900001c7340
RDX: 07a118681652539b RSI: ffffc900001c7340 RDI: ffffc900001c7300
RBP: ffffc900001c7490 R08: 92be24777a0cb760 R09: 06cba215a9585db2
R10: 19169e679bc5e218 R11: 02890d3464f2f001 R12: ffffc900001c71e0
R13: 066d8f5cac62fc77 R14: ea26890b938c20d2 R15: ffffc900001c72e0
 curve25519 include/crypto/curve25519.h:39 [inline]
 mix_dh+0xc1/0x2e0 drivers/net/wireguard/noise.c:411
 wg_noise_handshake_consume_initiation+0x3c1/0xf60 drivers/net/wireguard/noise.c:608
 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 timer wakeup didn't happen for 10501 jiffies! g123513 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=1 timer-softirq=57151
rcu: rcu_preempt kthread starved for 10502 jiffies! g123513 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->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:I stack:26680 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:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 22 Comm: kworker/1:0 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:hlock_class kernel/locking/lockdep.c:228 [inline]
RIP: 0010:__lock_acquire+0x11d8/0x1f80 kernel/locking/lockdep.c:5046
Code: 08 8b 18 81 e3 ff 1f 00 00 48 89 d8 48 c1 e8 06 48 8d 3c c5 20 c2 49 90 be 08 00 00 00 e8 b0 94 77 00 48 0f a3 1d 68 48 df 0e <73> 1b 48 8d 04 5b 48 c1 e0 06 48 8d 98 20 21 19 90 48 ba 00 00 00
RSP: 0018:ffffc900001e09e0 EFLAGS: 00000057
RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffffffff816a79b0
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff9049c220
RBP: 2e4489edb596d9f6 R08: dffffc0000000000 R09: fffffbfff2093845
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff888012714658
R13: ffff888012713b80 R14: 0000000000000000 R15: 1ffff110024e28e4
FS:  0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c0007dbfc0 CR3: 000000000ce8e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000006161 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0xd1/0x120 kernel/locking/spinlock.c:162
 debug_object_activate+0x68/0x4e0 lib/debugobjects.c:697
 debug_hrtimer_activate kernel/time/hrtimer.c:420 [inline]
 debug_activate kernel/time/hrtimer.c:475 [inline]
 enqueue_hrtimer+0x30/0x410 kernel/time/hrtimer.c:1084
 __run_hrtimer kernel/time/hrtimer.c:1703 [inline]
 __hrtimer_run_queues+0x728/0xe50 kernel/time/hrtimer.c:1750
 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:fmul2 arch/x86/crypto/curve25519-x86_64.c:296 [inline]
RIP: 0010:point_add_and_double arch/x86/crypto/curve25519-x86_64.c:1006 [inline]
RIP: 0010:montgomery_ladder arch/x86/crypto/curve25519-x86_64.c:1098 [inline]
RIP: 0010:curve25519_ever64 arch/x86/crypto/curve25519-x86_64.c:1252 [inline]
RIP: 0010:curve25519_arch+0x1f07/0x5700 arch/x86/crypto/curve25519-x86_64.c:1599
Code: 45 31 d2 4d 89 04 24 c4 62 ab f6 5f 08 f3 4d 0f 38 f6 d1 4d 89 54 24 08 c4 62 e3 f6 6f 10 f3 49 0f 38 f6 db c4 e2 8b f6 57 18 <f3> 4d 0f 38 f6 f5 48 c7 c0 00 00 00 00 f3 48 0f 38 f6 c2 48 8b 51
RSP: 0018:ffffc900001c70c0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 8c0b1ea1a93d0eb9 RCX: ffffc900001c7340
RDX: 07a118681652539b RSI: ffffc900001c7340 RDI: ffffc900001c7300
RBP: ffffc900001c7490 R08: 92be24777a0cb760 R09: 06cba215a9585db2
R10: 19169e679bc5e218 R11: 02890d3464f2f001 R12: ffffc900001c71e0
R13: 066d8f5cac62fc77 R14: ea26890b938c20d2 R15: ffffc900001c72e0
 curve25519 include/crypto/curve25519.h:39 [inline]
 mix_dh+0xc1/0x2e0 drivers/net/wireguard/noise.c:411
 wg_noise_handshake_consume_initiation+0x3c1/0xf60 drivers/net/wireguard/noise.c:608
 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>