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【DM版本】: v7.1.5.82
【操作系统】：麒麟v10
【CPU】: 飞腾2000
【问题描述】*：达梦7数据库偶尔会会挂掉，报段错误

Apr 22 16:57:09 localhost.localdomain audit[3067]: ANOM_ABEND auid=4294967295 uid=1001 gid=1001 ses=4294967295 pid=3067 comm="dm_sql_thd" exe="/opt/dmdbms/bin/dmserver" sig=11 res=1
Apr 22 16:57:09 localhost.localdomain systemd[1]: Created slice system-systemd\x2dcoredump.slice.
Apr 22 16:57:09 localhost.localdomain systemd[1]: Started Process Core Dump (PID 2532429/UID 0).
Apr 22 16:57:09 localhost.localdomain audit[1]: SERVICE_START pid=1 uid=0 auid=4294967295 ses=4294967295 msg='unit=systemd-coredump@0-2532429-0 comm="systemd" exe="/usr/lib/systemd/syst>
Apr 22 16:57:09 localhost.localdomain DmServiceDMSERVER[2588]: -bash：行 1:  3067 段错误               （核心已转储）"/opt/dmdbms/bin/dmserver" "/opt/dmdbms/DAMENG/dm.ini" -noconsole > >
Apr 22 16:57:09 localhost.localdomain systemd[1]: session-c1.scope: Succeeded.
Apr 22 16:57:10 localhost.localdomain systemd-coredump[2532439]: Process 3067 (dmserver) of user 1001 dumped core.

                                                                 Stack trace of thread 1887107:
                                                                 #0  0x0000000000b670b8 cscn2_get_len_blank (dmserver)
                                                                 #1  0x0000000000b684f4 cscn2_exec_fill_data_all_visible (dmserver)
                                                                 #2  0x0000000000b6c214 cscn2_exec (dmserver)
                                                                 #3  0x0000000000c6f160 vm_run (dmserver)
                                                                 #4  0x0000000000c6f9e8 vm_run_pln_low (dmserver)
                                                                 #5  0x0000000000f425cc ntsk_process_exec_low (dmserver)
                                                                 #6  0x0000000000f44ae4 ntsk_process_exec (dmserver)
                                                                 #7  0x0000000000f48a6c ntsk_process_cop (dmserver)
                                                                 #8  0x0000000000e91dc0 uthr_db_main_for_sess (dmserver)
                                                                 #9  0x0000ffff7e7488cc n/a (libpthread.so.0)

                                                                 Stack trace of thread 3067:
                                                                 #0  0x0000ffff7e92ae38 __nanosleep (libc.so.6)
                                                                 #1  0x0000000000438f20 os_thread_sleep_low (dmserver)
                                                                 #2  0x0000000000438f20 os_thread_sleep_low (dmserver)
                                                                 #3  0x000000000042a0ec main (dmserver)
                                                                 #4  0x0000ffff7e8a3fe0 __libc_start_main (libc.so.6)
                                                                 #5  0x0000fffffe05fd3c n/a (n/a)
Apr 22 16:57:10 localhost.localdomain systemd[1]: systemd-coredump@0-2532429-0.service: Succeeded.
Apr 22 16:57:10 localhost.localdomain audit[1]: SERVICE_STOP pid=1 uid=0 auid=4294967295 ses=4294967295 msg='unit=systemd-coredump@0-2532429-0 comm="systemd" exe="/usr/lib/systemd/syste>