rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 1-...!: (1 GPs behind) idle=3e3/1/0x4000000000000000 softirq=7849/7854 fqs=1
(detected by 0, t=11906 jiffies, g=7213, q=779)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 25 Comm: kworker/1:1 Not tainted 5.17.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events_power_efficient wg_ratelimiter_gc_entries
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/irqflags.h:137 [inline]
RIP: 0010:lock_is_held_type+0xf0/0x140 kernel/locking/lockdep.c:5684
Code: f0 41 0f 94 c5 48 c7 c7 a0 6a eb 88 e8 09 0c 00 00 b8 ff ff ff ff 65 0f c1 05 9c 80 83 77 83 f8 01 75 29 9c 58 f6 c4 02 75 3d <48> f7 04 24 00 02 00 00 74 01 fb 48 83 c4 08 44 89 e8 5b 5d 41 5c
RSP: 0018:ffffc90000fd8ca8 EFLAGS: 00000046
RAX: 0000000000000046 RBX: 0000000000000004 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffffffff88eb6aa0 RDI: ffffffff89419360
RBP: ffffffff8ad75aa0 R08: 0000000000000000 R09: ffffffff8ca47917
R10: fffffbfff1948f22 R11: 0000000000000001 R12: ffff888010e3c000
R13: 0000000000000000 R14: 00000000ffffffff R15: ffff888010e3ca98
FS: 0000000000000000(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f521de04310 CR3: 000000001b49f000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_is_held include/linux/lockdep.h:283 [inline]
rcu_read_lock_sched_held+0x3a/0x70 kernel/rcu/update.c:125
trace_lock_release include/trace/events/lock.h:58 [inline]
lock_release+0x522/0x720 kernel/locking/lockdep.c:5650
__raw_spin_unlock include/linux/spinlock_api_smp.h:141 [inline]
_raw_spin_unlock+0x12/0x40 kernel/locking/spinlock.c:186
spin_unlock include/linux/spinlock.h:389 [inline]
advance_sched+0x37a/0x920 net/sched/sch_taprio.c:763
__run_hrtimer kernel/time/hrtimer.c:1685 [inline]
__hrtimer_run_queues+0x4d7/0xb00 kernel/time/hrtimer.c:1749
hrtimer_interrupt+0x2f5/0x780 kernel/time/hrtimer.c:1811
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1086 [inline]
__sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1103
sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1097
asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:lock_acquire+0x1ef/0x510 kernel/locking/lockdep.c:5607
Code: 1d af 7e 83 f8 01 0f 85 b4 02 00 00 9c 58 f6 c4 02 0f 85 9f 02 00 00 48 83 7c 24 08 00 74 01 fb 48 b8 00 00 00 00 00 fc ff df <48> 01 c3 48 c7 03 00 00 00 00 48 c7 43 08 00 00 00 00 48 8b 84 24
RSP: 0018:ffffc90001017be8 EFLAGS: 00000206
RAX: dffffc0000000000 RBX: 1ffff92000202f7f RCX: 000000000000c67f
RDX: 1ffff110021c7943 RSI: ffffffff88eb6aa0 RDI: ffffffff89419360
RBP: 0000000000000001 R08: 0000000000000000 R09: ffffffff8f0c696f
R10: fffffbfff1e18d2d R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000000000 R14: ffffffff8b9ffd38 R15: 0000000000000000
__raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
_raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:154
spin_lock include/linux/spinlock.h:349 [inline]
wg_ratelimiter_gc_entries+0x4a/0x370 drivers/net/wireguard/ratelimiter.c:63
process_one_work+0x879/0x1410 kernel/workqueue.c:2307
worker_thread+0x5a0/0xf60 kernel/workqueue.c:2454
kthread+0x299/0x340 kernel/kthread.c:377
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
rcu: rcu_preempt kthread timer wakeup didn't happen for 3510 jiffies! g7213 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: Possible timer handling issue on cpu=0 timer-softirq=3583
rcu: rcu_preempt kthread starved for 3511 jiffies! g7213 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->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:I stack:28816 pid: 14 ppid: 2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:4986 [inline]
__schedule+0x90d/0x2680 kernel/sched/core.c:6295
schedule+0xd2/0x260 kernel/sched/core.c:6368
schedule_timeout+0x11d/0x250 kernel/time/timer.c:1881
rcu_gp_fqs_loop+0x186/0x810 kernel/rcu/tree.c:1963
rcu_gp_kthread+0x1de/0x320 kernel/rcu/tree.c:2136
kthread+0x299/0x340 kernel/kthread.c:377
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
rcu: Stack dump where RCU GP kthread last ran:
NMI backtrace for cpu 0
CPU: 0 PID: 44 Comm: kworker/u4:2 Not tainted 5.17.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events_unbound toggle_allocation_gate
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x57/0x7d lib/dump_stack.c:106
nmi_cpu_backtrace.cold+0x30/0xc0 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x11f/0x170 lib/nmi_backtrace.c:62
trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline]
rcu_check_gp_kthread_starvation.cold+0x1fb/0x200 kernel/rcu/tree_stall.h:458
print_other_cpu_stall kernel/rcu/tree_stall.h:563 [inline]
check_cpu_stall kernel/rcu/tree_stall.h:706 [inline]
rcu_pending kernel/rcu/tree.c:3919 [inline]
rcu_sched_clock_irq+0x1f7c/0x2150 kernel/rcu/tree.c:2617
update_process_times+0x13b/0x1c0 kernel/time/timer.c:1785
tick_sched_handle+0x6f/0x130 kernel/time/tick-sched.c:226
tick_sched_timer+0x132/0x210 kernel/time/tick-sched.c:1428
__run_hrtimer kernel/time/hrtimer.c:1685 [inline]
__hrtimer_run_queues+0x18a/0xb00 kernel/time/hrtimer.c:1749
hrtimer_interrupt+0x2f5/0x780 kernel/time/hrtimer.c:1811
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1086 [inline]
__sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1103
sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1097
asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:csd_lock_wait kernel/smp.c:440 [inline]
RIP: 0010:smp_call_function_many_cond+0x271/0xa50 kernel/smp.c:969
Code: 38 d0 7c 08 84 d2 0f 85 47 05 00 00 8b 43 08 a8 01 74 2e 48 89 ca 49 89 cf 48 c1 ea 03 41 83 e7 07 4c 01 e2 41 83 c7 03 f3 90 <0f> b6 02 41 38 c7 7c 08 84 c0 0f 85 d4 04 00 00 8b 43 08 a8 01 75
RSP: 0018:ffffc90001157a60 EFLAGS: 00000202
RAX: 0000000000000011 RBX: ffff8880b9f3f360 RCX: ffff8880b9f3f368
RDX: ffffed10173e7e6d RSI: ffff8880b9e3ad88 RDI: ffffffff8a8618a8
RBP: ffff8880b9e3ad80 R08: 0000000000000001 R09: ffffffff8f0c6887
R10: 0000000000000001 R11: 0000000000000001 R12: dffffc0000000000
R13: ffff8880b9e3ad88 R14: ffffed10173c75b0 R15: 0000000000000003
on_each_cpu_cond_mask+0x3f/0x70 kernel/smp.c:1135
on_each_cpu include/linux/smp.h:71 [inline]
text_poke_sync arch/x86/kernel/alternative.c:1112 [inline]
text_poke_bp_batch+0x319/0x520 arch/x86/kernel/alternative.c:1353
text_poke_flush arch/x86/kernel/alternative.c:1470 [inline]
text_poke_flush arch/x86/kernel/alternative.c:1467 [inline]
text_poke_finish+0x16/0x30 arch/x86/kernel/alternative.c:1477
arch_jump_label_transform_apply+0x13/0x20 arch/x86/kernel/jump_label.c:146
static_key_disable_cpuslocked+0x100/0x160 kernel/jump_label.c:207
static_key_disable+0x11/0x20 kernel/jump_label.c:215
toggle_allocation_gate mm/kfence/core.c:748 [inline]
toggle_allocation_gate+0x154/0x310 mm/kfence/core.c:726
process_one_work+0x879/0x1410 kernel/workqueue.c:2307
worker_thread+0x5a0/0xf60 kernel/workqueue.c:2454
kthread+0x299/0x340 kernel/kthread.c:377
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
----------------
Code disassembly (best guess):
0: f0 41 0f 94 c5 lock sete %r13b
5: 48 c7 c7 a0 6a eb 88 mov $0xffffffff88eb6aa0,%rdi
c: e8 09 0c 00 00 callq 0xc1a
11: b8 ff ff ff ff mov $0xffffffff,%eax
16: 65 0f c1 05 9c 80 83 xadd %eax,%gs:0x7783809c(%rip) # 0x778380ba
1d: 77
1e: 83 f8 01 cmp $0x1,%eax
21: 75 29 jne 0x4c
23: 9c pushfq
24: 58 pop %rax
25: f6 c4 02 test $0x2,%ah
28: 75 3d jne 0x67
* 2a: 48 f7 04 24 00 02 00 testq $0x200,(%rsp) <-- trapping instruction
31: 00
32: 74 01 je 0x35
34: fb sti
35: 48 83 c4 08 add $0x8,%rsp
39: 44 89 e8 mov %r13d,%eax
3c: 5b pop %rbx
3d: 5d pop %rbp
3e: 41 5c pop %r12