Horton

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

Tom Lane <tgl@sss.pgh.pa.us>

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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Thomas Munro <thomas.munro@gmail.com>
Cc: Robert Haas <robertmhaas@gmail.com>, Andres Freund <andres@anarazel.de>, Alvaro Herrera <alvherre@alvh.no-ip.org>, Andrew Dunstan <andrew@dunslane.net>, PostgreSQL Development <pgsql-hackers@postgresql.org>
Date: 2021-08-13T00:29:09Z
Lists: pgsql-hackers 
Thomas Munro <thomas.munro@gmail.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

Commits

  1. Make EXEC_BACKEND more convenient on Linux and FreeBSD.

  2. Make EXEC_BACKEND more convenient on macOS.