rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P9521/1:b..l
rcu: 	(detected by 1, t=10503 jiffies, g=43569, q=224 ncpus=2)
task:sed             state:R  running task     stack:25184 pid:9521  tgid:9521  ppid:9516   flags:0x00004002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0x17e8/0x4a20 kernel/sched/core.c:6745
 preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:7067
 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:mas_validate_limits lib/maple_tree.c:7480 [inline]
RIP: 0010:mt_validate+0xf02/0x4aa0 lib/maple_tree.c:7593
Code: 4c 89 fe e8 c0 8d 1a f6 31 ff 8b 5c 24 08 89 de e8 13 8d 1a f6 4d 85 ff 75 08 85 db 0f 85 e2 00 00 00 e8 c1 88 1a f6 4c 89 ef <4c> 89 fe e8 16 8b 1a f6 4d 39 fd 0f 87 cb 01 00 00 e8 a8 88 1a f6
RSP: 0018:ffffc9000316f4e0 EFLAGS: 00000293
RAX: ffffffff8b7b9e8f RBX: 0000000000000009 RCX: ffff888068428000
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007f879f4c8fff
RBP: ffffc9000316f6d0 R08: ffffffff8b7b9e7d R09: ffffffff8b7b9ce2
R10: 0000000000000004 R11: ffff888068428000 R12: 0000000000000001
R13: 00007f879f4c8fff R14: 000000000000000f R15: 00007f879f4e7fff
 validate_mm+0xe7/0x530 mm/mmap.c:288
 vma_link+0x3d0/0x4f0 mm/mmap.c:420
 insert_vm_struct+0x2f7/0x410 mm/mmap.c:3413
 __install_special_mapping+0x1b9/0x350 mm/mmap.c:3653
 map_vdso+0x1de/0x410 arch/x86/entry/vdso/vma.c:257
 load_elf_binary+0x1ba4/0x2620 fs/binfmt_elf.c:1237
 search_binary_handler fs/exec.c:1797 [inline]
 exec_binprm fs/exec.c:1839 [inline]
 bprm_execve+0xafa/0x17c0 fs/exec.c:1891
 do_execveat_common+0x553/0x700 fs/exec.c:1998
 do_execve fs/exec.c:2072 [inline]
 __do_sys_execve fs/exec.c:2148 [inline]
 __se_sys_execve fs/exec.c:2143 [inline]
 __x64_sys_execve+0x92/0xb0 fs/exec.c:2143
 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: 0033:0x7faee0548ef7
RSP: 002b:00007ffd75d66528 EFLAGS: 00000246 ORIG_RAX: 000000000000003b
RAX: ffffffffffffffda RBX: 000055e7b2d4dec0 RCX: 00007faee0548ef7
RDX: 000055e7b2d4df08 RSI: 000055e7b2d4dec0 RDI: 000055e7b2d4df98
RBP: 000055e7b2d4df98 R08: 000055e7b2d4df9d R09: 00007ffd75d6aeb8
R10: 00007faee0747088 R11: 0000000000000246 R12: 000055e7b2d4df08
R13: 00007faee06f6904 R14: 000055e7b2d4df08 R15: 0000000000000000
 </TASK>
rcu: rcu_preempt kthread starved for 10529 jiffies! g43569 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:24464 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0x17e8/0x4a20 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6837
 schedule_timeout+0x1be/0x310 kernel/time/timer.c:2581
 rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2000
 rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2202
 kthread+0x2f2/0x390 kernel/kthread.c:389
 ret_from_fork+0x4d/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:86 [inline]
NMI backtrace for cpu 0 skipped: idling at acpi_safe_halt+0x21/0x30 drivers/acpi/processor_idle.c:112