failed to kill process

[e00E]

Desktop notifications:

• Low memory! Killing process 997 my-process-name.
• Error: Failed to kill process

systemctl status earlyoom:

• sending SIGTERM to process 997 uid 1000 "my-process-name": oom_score 1146, oom_score_adj 0, VmRSS 23007 MiB, cmdline "my-process-name"
• kill_release: pid=997: process_mrelease pidfd=4 failed: Invalid argument
• process 997 did not exit
• kill failed: Timer expired

At this point I manually kill -9ed the process, which worked.

Config:

EARLYOOM_ARGS="-m 4 -r 0 -n --avoid '^(init|systemd|sshd)$'"

Arch Linux, earlyoom package 1.9.0-1.