rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P4089/1:b..l
	(detected by 0, t=10502 jiffies, g=8773, q=682 ncpus=2)
task:syz.4.153       state:R  running task     stack:27768 pid:4089  ppid:3563   flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5245 [inline]
 __schedule+0x142d/0x4550 kernel/sched/core.c:6558
 preempt_schedule_irq+0xf7/0x1c0 kernel/sched/core.c:6870
 irqentry_exit+0x53/0x80 kernel/entry/common.c:439
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653
RIP: 0010:bpf_xdp_pointer+0x11f/0x470 net/core/filter.c:3941
Code: 8b 5d 00 89 de 83 e6 01 31 ff e8 9c c9 fb f8 f6 c3 01 0f 85 88 02 00 00 e8 2e c6 fb f8 44 89 fd 44 89 f7 89 ee e8 81 c7 fb f8 <41> 39 ee 76 11 e8 17 c6 fb f8 48 c7 c0 ea ff ff ff e9 43 02 00 00
RSP: 0018:ffffc9000a4d7688 EFLAGS: 00000297
RAX: 0000000000000002 RBX: 0000000000000000 RCX: 0000000000040000
RDX: ffff88807e653b80 RSI: 0000000000000012 RDI: 0000000000000eff
RBP: 0000000000000012 R08: ffffffff888ecd2f R09: ffffed100fcca771
R10: 0000000000000000 R11: 000000000000f800 R12: 0000000000000d00
R13: ffff88807cd36ec0 R14: 0000000000000eff R15: 0000000000000012
 ____bpf_xdp_load_bytes net/core/filter.c:3967 [inline]
 bpf_xdp_load_bytes+0x2c/0x3a0 net/core/filter.c:3962
 bpf_prog_7374ce26c244cf55+0x65/0x6a
 __bpf_prog_run include/linux/filter.h:603 [inline]
 bpf_prog_run_xdp include/linux/filter.h:778 [inline]
 bpf_test_run+0x3d4/0x8b0 net/bpf/test_run.c:400
 bpf_prog_test_run_xdp+0x7a7/0x1130 net/bpf/test_run.c:1389
 bpf_prog_test_run+0x32f/0x3a0 kernel/bpf/syscall.c:3670
 __sys_bpf+0x3eb/0x6c0 kernel/bpf/syscall.c:5023
 __do_sys_bpf kernel/bpf/syscall.c:5109 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:5107 [inline]
 __x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:5107
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f2b3bf75d39
RSP: 002b:00007f2b3ccb3048 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f2b3c104070 RCX: 00007f2b3bf75d39
RDX: 0000000000000050 RSI: 00000000200011c0 RDI: 000000000000000a
RBP: 00007f2b3bff6766 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f2b3c104070 R15: 00007ffd85282368
 </TASK>
rcu: rcu_preempt kthread starved for 9451 jiffies! g8773 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:27256 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 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:51 [inline]
NMI backtrace for cpu 1 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:89 [inline]
NMI backtrace for cpu 1 skipped: idling at acpi_safe_halt drivers/acpi/processor_idle.c:112 [inline]
NMI backtrace for cpu 1 skipped: idling at acpi_idle_do_entry+0x10f/0x340 drivers/acpi/processor_idle.c:572