Smart_manager service do_page_fault() to crashed

Hi,

We are running the Morse Micro 2.9-dev build on our board. After running for three days, the smart_manager encountered a do_page_fault() and crashed. Restarting it via /etc/init.d/smart_manager start/restart causes it to hit do_page_fault() again within several seconds.

CPU Platform: MT7621
Halow module: MM6108
OS: Morse Micro 2.9-dev

[326279.651286] do_page_fault(): sending SIGSEGV to smart_manager for invalid read access from 00000010
[326279.660744] epc = 77c8c198 in dcs.mmext[77c7e000+20000]
[326279.666284] ra = 77c8bdf4 in dcs.mmext[77c7e000+20000]
[326392.939829] do_page_fault(): sending SIGSEGV to smart_manager for invalid read access from 00000010
[326392.949069] epc = 77cb6198 in dcs.mmext[77ca8000+20000]
[326392.954463] ra = 77cb5df4 in dcs.mmext[77ca8000+20000]
[326506.173981] do_page_fault(): sending SIGSEGV to smart_manager for invalid read access from 00000010
[326506.183215] epc = 77d1f198 in dcs.mmext[77d11000+20000]
[326506.188612] ra = 77d1edf4 in dcs.mmext[77d11000+20000]
[326619.355790] do_page_fault(): sending SIGSEGV to smart_manager for invalid read access from 00000010
[326619.365026] epc = 77cd8198 in dcs.mmext[77cca000+20000]
[326619.370515] ra = 77cd7df4 in dcs.mmext[77cca000+20000]
[326732.539679] do_page_fault(): sending SIGSEGV to smart_manager for invalid read access from 00000010
[326732.548949] epc = 77d05198 in dcs.mmext[77cf7000+20000]
[326732.554407] ra = 77d04df4 in dcs.mmext[77cf7000+20000]
[326845.698183] do_page_fault(): sending SIGSEGV to smart_manager for invalid read access from 00000010
[326845.707464] epc = 77cf4198 in dcs.mmext[77ce6000+20000]
[326845.713234] ra = 77cf3df4 in dcs.mmext[77ce6000+20000]
[326958.848630] do_page_fault(): sending SIGSEGV to smart_manager for invalid read access from 00000010
[326958.858214] epc = 77c73198 in dcs.mmext[77c65000+20000]
[326958.863635] ra = 77c72df4 in dcs.mmext[77c65000+20000]

The issue prevents the DCS function from working and stops the service from restarting for recovery until a device reboot. We urgently need the Morse Micro Halow to run stably on our MT7621 platform device, so please help identify the causes.