Re: Worth using personality(ADDR_NO_RANDOMIZE) for EXEC_BACKEND on linux?

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Thomas Munro <thomas(dot)munro(at)gmail(dot)com>
Cc: Robert Haas <robertmhaas(at)gmail(dot)com>, Andres Freund <andres(at)anarazel(dot)de>, Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org>, Andrew Dunstan <andrew(at)dunslane(dot)net>, PostgreSQL Development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Worth using personality(ADDR_NO_RANDOMIZE) for EXEC_BACKEND on linux?
Date: 2021-08-13 00:29:09
Message-ID: 16848.1628814549@sss.pgh.pa.us
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Thomas Munro <thomas(dot)munro(at)gmail(dot)com> writes:
> Obviously the address may have to be adjusted if Apple moves stuff
> around, or if the initial layout and ASLR slide range turn out to be
> less constrained than I inferred by nosing around the source code and
> testing on a couple of systems.

Sure. But we're no worse off than before; the workaround of "set
PG_SHMEM_ADDR by hand" is just as applicable as ever.

regards, tom lane

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