[openEuler-20.03-SP2长稳] LTP membarrier01 测试触发NULL指针

【环境信息】
环境信息：arm物理机
OS版本：20.03-SP2-round4
内核：4.19.90-2105.6.0.0090.oe1.aarch64
【问题复现步骤】
1.使用ISO选中最小化模式安装
2.执行长稳用例
【预期结果】
执行无异常
【实际结果】
执行长稳用例一段时间后机器挂掉，产生core文件

```cpp
[31077.812327] vcan: Virtual CAN interface driver
[31077.812329] vcan: enabled echo on driver level.
[31077.839576] LTP: starting dma_thread_diotest6 (dma_thread_diotest -a 3072)
[31077.852754] LTP: starting msgrcv07
[31077.872154] LTP: starting msgrcv08
[31077.872154] LTP: starting msgrcv08
[31077.905499] LTP: starting timer_settime02
[31077.913540] LTP: starting msgsnd01
[31077.922597] LTP: starting msgsnd02
[31077.930673] LTP: starting msgsnd05
[31077.955532] LTP: starting msgsnd06
[31077.976741] EINJ: Error INJection is initialized.
[31078.002799] LTP: starting semctl01
[31078.009272] LTP: starting membarrier01
[31078.002799] LTP: starting semctl01
[31078.009272] LTP: starting membarrier01
[31078.136464] Unable to handle kernel NULL pointer dereference at virtual address 000000000000002c
[31078.151187] Mem abort info:
[31078.156945] ESR = 0x96000007
[31078.162892] Exception class = DABT (current EL), IL = 32 bits
[31078.171859] SET = 0, FnV = 0
[31078.177885] EA = 0, S1PTW = 0
[31078.183930] Data abort info:
[31078.189730] ISV = 0, ISS = 0x00000007
[31078.196529] CM = 0, WnR = 0
[31078.202450] user pgtable: 64k pages, 48-bit VAs, pgdp = 0000000007cf6fb5
[31078.212388] [000000000000002c] pgd=0000005fceab0003, pud=0000005fceab0003, pmd=0000005f98410003, pte=0000000000000000
[31078.229818] Internal error: Oops: 96000007 [#1] SMP
[31078.238192] Modules linked in: vcan can_raw can authenc ccm usb_storage usbatm atm sit tunnel4 ip_tunnel nbd vhost_net tap uhid uinput vhost
vsock vmw_vsock_virtio_transport_common vhost vsock tun scsi_debug cuse nls_koi8_u nls_cp932 vfio_iommu_type1 vfio unix_diag hdma_mgmt ccp vet
h vrf sm4_generic cmac ansi_cprng vmac sha3_generic seed cts aes_ce_ccm fcrypt pcbc anubis khazad tea michael_mic cast5_generic blowfish_generi
c blowfish_common des_generic sctp ts_kmp nf_log_arp nf_log_ipv6 nf_log_ipv4 nf_log_common brd fuse overlay salsa20_generic camellia_generic ca
st6_generic cast_common serpent_generic twofish_generic twofish_common xts lrw tgr192 wp512 rmd320 rmd256 rmd160 rmd128 md4 sha512_generic aes
neon_blk loop jprob(OE) binfmt_misc ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 ipt_REJECT nf_reject_ipv4
[31078.364569] xt_conntrack ebtable_nat ebtable_broute bridge stp llc ip6table_nat nf_nat_ipv6 ip6table_mangle ip6table_raw ip6table_security
iptable_nat nf_nat_ipv4 nf_nat iptable_mangle iptable_raw iptable_security nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 rfkill ebtable_filter ebt
ables ip6table_filter ip6_tables iptable_filter vfat fat ipmi_ssif dm_thin_pool dm_persistent_data dm_bio_prison dm_bufio libcrc32c raid1 ses e
nclosure aes_ce_blk crypto_simd cryptd aes_ce_cipher ghash_ce hns_roce_hw_v2 ofpart sha2_ce cmdlinepart sha256_arm64 hns_roce sha1_ce sg ib_cor
e sbsa_gwdt ipmi_si hi_sfc ipmi_devintf mtd spi_dw_mmio ipmi_msghandler sch_fq_codel ip_tables ext4 mbcache jbd2 sr_mod cdrom sd_mod realtek hi
si_sas_v3_hw hisi_sas_main libsas ahci hclge scsi_transport_sas libahci hns3 hinic libata hnae3
[31078.517251] megaraid_sas i2c_designware_platform i2c_designware_core dm_mirror dm_region_hash dm_log dm_mod [last unloaded: einj]
[31078.545923] Process membarrier01 (pid: 3995063, stack limit = 0x00000000c5abde19)
[31078.570778] CPU: 35 PID: 3995063 Comm: membarrier01 Kdump: loaded Tainted: G WC OE 4.19.90-2105.6.0.0090.oe1.aarch64 #1
[31078.600187] Hardware name: Huawei TaiShan 200 (Model 2280)/BC82AMDDA, BIOS 1.06 10/29/2019
[31078.605325] LTP: starting semctl02
[31078.626327] pstate: 60400009 (nZCv daif +PAN -UAO)
[31078.626334] pc : membarrier_global_expedited+0xe8/0x1a8
[31078.626337] lr : membarrier_global_expedited+0xe8/0x1a8
[31078.678926] sp : ffff00016ca6fd50
[31078.690382] x29: ffff00016ca6fd50 x28: ffff802d6005f000
[31078.703582] x27: 0000000000000000 x26: 0000000000000000
[31078.716619] x25: ffff00016ca6fda8 x24: ffff000008fcd500
[31078.729474] x23: ffff0000092d5000 x22: ffff000008fb0018
[31078.742120] x21: ffff0000092d3000 x20: ffff0000092d57f0
[31078.754541] x19: 0000000000000020 x18: 0000000000000000
[31078.757624] LTP: starting semctl03
[31078.766910] x17: 0000000000000000 x16: 0000000000000000
[31078.766912] x15: 0000000000000000 x14: 0000000000000000
[31078.766913] x13: 0000000000000000 x12: 0000000000000000
[31078.766914] x11: 0000000000000000 x10: 0000000000000000
[31078.766915] x9 : 0000000000000000 x8 : 0000000000000000
[31078.766915] x7 : 0000000000000000 x6 : ffff00016ca6fd48
[31078.766918] x5 : ffff00016ca6fd48 x4 : ffffffffffffffff
[31078.839878] LTP: starting semctl04
[31078.845022] x3 : 0000000000000000 x2 : 62512f9d263e2b00
[31078.845024] x1 : 0000000000000000 x0 : 0000000000000000
[31078.845026] Call trace:
[31078.845028] membarrier_global_expedited+0xe8/0x1a8
[31078.845031] __arm64_sys_membarrier+0xac/0x1f0
[31078.882494] LTP: starting semctl05
[31078.884100] el0_svc_common+0x78/0x178
[31078.901063] LTP: starting semctl06
[31078.909058] el0_svc_handler+0x38/0x78
[31078.909060] el0_svc+0x8/0x1f8
[31078.909063] Code: b949d401 361ffdc1 91264000 97fe707d (b9402c00)
[31078.955012] SMP: stopping secondary CPUs
[31078.964813] Starting crashdump kernel...
[31078.972460] Bye!
```

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