[email protected] wrote:
What David meant was that "root will always have a slot" doesn't *actually*
help unless you *also* have a way to actually *spawn* such a process. In order
to do the ps, kill, and so on that you need to recover, you need to already
have either a root shell available, or a way to *get* a root shell that doesn't
rely on a non-root process (so /bin/su doesn't help here).
That's right, although it's worse than that. You need to have a process
with CAP_SYS_ADMIN. If root processes normally have that capability
then the reserved slots may well disappear before you notice a problem.
If root processes normally don't have it, then you need to guarantee
that one is already running.
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