filter plugin causes segfault in some cases

[nokute78]

I tested filter plugin and I found it causes segfault in some cases.

no options for filter plugin

These commands cause segfault. Because "match" is NULL.

$ fluent-bit -i cpu -o stdout -F stdout

and

$ fluent-bit -i cpu -o stdout -F stdout -m '*'

Is option '-m' for only output plugins?

Grep plugin also causes.

$ fluent-bit -i cpu -o stdout -F grep

parse error at set_rules

Illegal property (regex=aaa in this case)causes segfault.
This is a no regular expression error.

$ fluent-bit -i cpu -o stdout -F grep -p "match=*" -p "regex=aaa"

[edsiper]

thanks for reporting the errors, all of them are fixed now.

[nokute78]

Thank you for fixing.
It works correctly!