sched: RT throttling activated
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P8126
rcu: 	(detected by 0, t=10502 jiffies, g=45353, q=183 ncpus=2)
task:syz.4.546       state:R  running task     stack:26112 pid:8126  tgid:8125  ppid:6629   flags:0x00004002
Call Trace:
 <IRQ>
 sched_show_task kernel/sched/core.c:7432 [inline]
 sched_show_task+0x42e/0x650 kernel/sched/core.c:7406
 rcu_print_detail_task_stall_rnp kernel/rcu/tree_stall.h:262 [inline]
 print_other_cpu_stall kernel/rcu/tree_stall.h:639 [inline]
 check_cpu_stall kernel/rcu/tree_stall.h:799 [inline]
 rcu_pending kernel/rcu/tree.c:4343 [inline]
 rcu_sched_clock_irq+0x27f5/0x33e0 kernel/rcu/tree.c:2670
 update_process_times+0x175/0x220 kernel/time/timer.c:2485
 tick_sched_handle kernel/time/tick-sched.c:276 [inline]
 tick_nohz_handler+0x376/0x530 kernel/time/tick-sched.c:297
 __run_hrtimer kernel/time/hrtimer.c:1689 [inline]
 __hrtimer_run_queues+0x657/0xcc0 kernel/time/hrtimer.c:1753
 hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1815
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline]
 __sysvec_apic_timer_interrupt+0x10f/0x450 arch/x86/kernel/apic/apic.c:1049
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
 sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1043
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x31/0x80 kernel/locking/spinlock.c:194
Code: f5 53 48 8b 74 24 10 48 89 fb 48 83 c7 18 e8 36 fd 4e f6 48 89 df e8 4e 7a 4f f6 f7 c5 00 02 00 00 75 23 9c 58 f6 c4 02 75 37 <bf> 01 00 00 00 e8 85 f3 40 f6 65 8b 05 86 0c e9 74 85 c0 74 16 5b
RSP: 0018:ffffc90009537898 EFLAGS: 00000246
RAX: 0000000000000002 RBX: ffffc90003a690c0 RCX: 1ffffffff203aaa9
RDX: 0000000000000000 RSI: ffffffff8b4cdac0 RDI: ffffffff8bb118a0
RBP: 0000000000000246 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff901d999f R11: 0000000000000000 R12: 0000000000007ff0
R13: ffffc90003a69000 R14: 0000000000007fff R15: 0000000000008000
 spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
 __bpf_ringbuf_reserve+0x38b/0x4b0 kernel/bpf/ringbuf.c:453
 ____bpf_ringbuf_output kernel/bpf/ringbuf.c:553 [inline]
 bpf_ringbuf_output+0x60/0xd0 kernel/bpf/ringbuf.c:543
 bpf_prog_708f06dc14f7bf0f+0x42/0x7c
 bpf_dispatcher_nop_func include/linux/bpf.h:1243 [inline]
 __bpf_prog_run include/linux/filter.h:691 [inline]
 bpf_prog_run include/linux/filter.h:698 [inline]
 bpf_test_run+0x49d/0xa90 net/bpf/test_run.c:433
 bpf_prog_test_run_skb+0xb6e/0x20f0 net/bpf/test_run.c:1094
 bpf_prog_test_run kernel/bpf/syscall.c:4313 [inline]
 __sys_bpf+0x10ba/0x49c0 kernel/bpf/syscall.c:5728
 __do_sys_bpf kernel/bpf/syscall.c:5817 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:5815 [inline]
 __x64_sys_bpf+0x78/0xc0 kernel/bpf/syscall.c:5815
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fddcdf7def9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fddcecf0038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007fddce135f80 RCX: 00007fddcdf7def9
RDX: 0000000000000050 RSI: 0000000020000900 RDI: 000000000000000a
RBP: 00007fddcdff0b76 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fddce135f80 R15: 00007ffc350c2848
 </TASK>
rcu: rcu_preempt kthread starved for 354 jiffies! g45353 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:28032 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5188 [inline]
 __schedule+0xe37/0x5490 kernel/sched/core.c:6529
 __schedule_loop kernel/sched/core.c:6606 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6621
 schedule_timeout+0x136/0x2a0 kernel/time/timer.c:2581
 rcu_gp_fqs_loop+0x1eb/0xb00 kernel/rcu/tree.c:2034
 rcu_gp_kthread+0x271/0x380 kernel/rcu/tree.c:2236
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:48 [inline]
NMI backtrace for cpu 1 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:106 [inline]
NMI backtrace for cpu 1 skipped: idling at acpi_safe_halt+0x1a/0x20 drivers/acpi/processor_idle.c:111