rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P8050/1:b..l
rcu: 	(detected by 1, t=10502 jiffies, g=25769, q=199 ncpus=2)
task:dhcpcd-run-hook state:R  running task     stack:23680 pid:8050  tgid:8050  ppid:4883   flags:0x00000000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5188 [inline]
 __schedule+0x17ae/0x4a10 kernel/sched/core.c:6529
 preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:6851
 irqentry_exit+0x5e/0x90 kernel/entry/common.c:354
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:get_current arch/x86/include/asm/current.h:49 [inline]
RIP: 0010:write_comp_data kernel/kcov.c:244 [inline]
RIP: 0010:__sanitizer_cov_trace_cmp8+0x8/0x90 kernel/kcov.c:293
Code: 44 0a 20 c3 cc cc cc cc 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 4c 8b 04 24 <65> 48 8b 0c 25 c0 d6 03 00 65 8b 05 d0 46 70 7e 25 00 01 ff 00 74
RSP: 0018:ffffc9000365f2b8 EFLAGS: 00000246
RAX: ffffffff8ba3f718 RBX: 00007fc9836c4000 RCX: ffff8880207e5a00
RDX: 0000000000000000 RSI: 00007fc9836c4000 RDI: 00007fc983791fff
RBP: ffffc9000365f4b0 R08: ffffffff8ba3f750 R09: ffffffff8ba3f552
R10: 0000000000000004 R11: ffff8880207e5a00 R12: 0000000000000001
R13: dffffc0000000000 R14: 1ffff920006cbe84 R15: 00007fc983791fff
 mas_validate_limits lib/maple_tree.c:7483 [inline]
 mt_validate+0xf50/0x4aa0 lib/maple_tree.c:7590
 validate_mm+0xe7/0x530 mm/mmap.c:329
 __split_vma+0xa69/0xc30 mm/mmap.c:2511
 do_vmi_align_munmap+0x388/0x18c0 mm/mmap.c:2663
 do_vmi_munmap+0x261/0x2f0 mm/mmap.c:2830
 mmap_region+0x72f/0x2090 mm/mmap.c:2881
 do_mmap+0x8f9/0x1010 mm/mmap.c:1468
 vm_mmap_pgoff+0x1dd/0x3d0 mm/util.c:588
 ksys_mmap_pgoff+0x4f1/0x720 mm/mmap.c:1514
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc9837abb74
RSP: 002b:00007ffd90f32008 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007ffd90f32048 RCX: 00007fc9837abb74
RDX: 0000000000000005 RSI: 000000000002c000 RDI: 00007fc983489000
RBP: 00007ffd90f323a0 R08: 0000000000000003 R09: 0000000000002000
R10: 0000000000000812 R11: 0000000000000246 R12: 00007fc983788570
R13: 00007ffd90f32428 R14: 0000000000001fd8 R15: 0000000000000000
 </TASK>
rcu: rcu_preempt kthread starved for 10542 jiffies! g25769 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:25816 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5188 [inline]
 __schedule+0x17ae/0x4a10 kernel/sched/core.c:6529
 __schedule_loop kernel/sched/core.c:6606 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6621
 schedule_timeout+0x1be/0x310 kernel/time/timer.c:2581
 rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2034
 rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2236
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/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 1 to CPUs 0:
NMI backtrace for cpu 0 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:48 [inline]
NMI backtrace for cpu 0 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:106 [inline]
NMI backtrace for cpu 0 skipped: idling at acpi_safe_halt+0x21/0x30 drivers/acpi/processor_idle.c:111