savd.scanner.died A scan processor unexpectedly terminated with signal: SIGKILL

hi,

  i just installed the sophos anti-virus free edition for linux. i have configured it during the install successfully. after some time, it has successfully updated the engine/virus signatures. but when i enable ondemand scanning, savscand suddenly hogs up the cpu and then it dies. here's a sample output of my savlog command.

Sun 29 Mar 2020 02:25:28 PM +08: update.updated Updating from versions - SAV: 9.16.0, Engine: 3.77.1, Data: 5.66
Sun 29 Mar 2020 02:25:28 PM +08: update.updated Updating Sophos Anti-Virus....
Updating Talpa Binary Packs
Updating SAVScan on-demand scanner
Updating Virus Engine and Data
Updating Talpa Kernel Support
Updating Manifest
Selecting appropriate kernel support...
Update completed.
Sun 29 Mar 2020 02:25:28 PM +08: update.updated Updated to versions - SAV: 9.16.0, Engine: 3.77.1, Data: 5.73
Sun 29 Mar 2020 02:25:28 PM +08: update.updated Successfully updated Sophos Anti-Virus from sdds:SOPHOS
Sun 29 Mar 2020 02:25:29 PM +08: savd.daemon Sophos Anti-Virus daemon started.
Sun 29 Mar 2020 02:25:36 PM +08: savd.daemon On-access scanning enabled using talpa.
Sun 29 Mar 2020 02:25:58 PM +08: savd.scanner.died A scan processor unexpectedly terminated with signal: SIGKILL.
Sun 29 Mar 2020 02:26:19 PM +08: savd.scanner.died A scan processor unexpectedly terminated with signal: SIGKILL.
Sun 29 Mar 2020 02:26:39 PM +08: savd.scanner.died A scan processor unexpectedly terminated with signal: SIGKILL.
Sun 29 Mar 2020 02:27:01 PM +08: savd.scanner.died A scan processor unexpectedly terminated with signal: SIGKILL.
Sun 29 Mar 2020 02:27:18 PM +08: savd.scanner.died A scan processor unexpectedly terminated with signal: SIGKILL.
Sun 29 Mar 2020 02:27:33 PM +08: savd.scanner.died A scan processor unexpectedly terminated with signal: SIGKILL.
Sun 29 Mar 2020 02:27:43 PM +08: savd.scanner.died A scan processor unexpectedly terminated with signal: SIGKILL.
Sun 29 Mar 2020 02:28:04 PM +08: savd.scanner.died A scan processor unexpectedly terminated with signal: SIGKILL.
Sun 29 Mar 2020 02:28:24 PM +08: savd.scanner.died A scan processor unexpectedly terminated with signal: SIGKILL.
Sun 29 Mar 2020 02:28:49 PM +08: savd.scanner.died A scan processor unexpectedly terminated with signal: SIGKILL.
Sun 29 Mar 2020 02:29:18 PM +08: savd.scanner.died A scan processor unexpectedly terminated with signal: SIGKILL.
Sun 29 Mar 2020 02:29:46 PM +08: savd.scanner.died A scan processor unexpectedly terminated with signal: SIGKILL.
Sun 29 Mar 2020 02:30:13 PM +08: savd.scanner.died A scan processor unexpectedly terminated with signal: SIGKILL.
Sun 29 Mar 2020 02:30:38 PM +08: savd.scanner.died A scan processor unexpectedly terminated with signal: SIGKILL.
Sun 29 Mar 2020 02:31:02 PM +08: savd.scanner.died A scan processor unexpectedly terminated with signal: SIGKILL.
Sun 29 Mar 2020 02:31:32 PM +08: savd.scanner.died A scan processor unexpectedly terminated with signal: SIGKILL.
Sun 29 Mar 2020 02:32:01 PM +08: savd.scanner.died A scan processor unexpectedly terminated with signal: SIGKILL.
Sun 29 Mar 2020 02:32:28 PM +08: savd.scanner.died A scan processor unexpectedly terminated with signal: SIGKILL.

i have to disable onaccess scanning to be able to stop the cpu hog (savscand). any idea what could this be?