[zvrba]

> All signals’ handling can be overridden except the SIGKILL.

... and SIGSTOP and SIGCONT.

[cnvogel]

SIGCONT can be handled just fine, both according to the manual, and in practice... (at least under Linux, been there, done that.)

[zvrba]

Sure, but you cannot override or ignore the default action: that of continuing execution.