How to free used Swap-Space? (from errno=8)

[Konstantin Belousov]

On Wed, Sep 23, 2020 at 12:03:32AM +0300, Konstantin Belousov wrote:
> On Tue, Sep 22, 2020 at 09:11:49PM +0200, Peter wrote:
> > So what happens then is this:
> > 
> > $ file scc.e
> > scc.e: ELF 32-bit LSB executable, Intel 80386, version 1
> > (FreeBSD), dynamically linked, interpreter /libexec/ld-elf.so.1,
> > for FreeBSD 9.3 (903504), stripped
> > 
> > $ ./scc.e
> > ELF interpreter /libexec/ld-elf.so.1 not found, error 8
> > Abort trap
> > 
> > And this will cost about some (hundred?) kB of swapspace every time it
> > happens. And they do not go away again, neither can the concerned jail
> > do fully die again.
> In what sense it 'costs' ?
> 
> Can you show exact sequence of commands and outputs that demostrate your
> point ?  What type of filesystem the binaries live on ?
> 
> I want to reproduce it locally.

I suspect that https://reviews.freebsd.org/D26525 should fix it.