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

From: Andres Freund <andres(at)anarazel(dot)de>
To: Michael Paquier <michael(at)paquier(dot)xyz>
Cc: Thomas Munro <thomas(dot)munro(at)gmail(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, "Bossart, Nathan" <bossartn(at)amazon(dot)com>, Robert Haas <robertmhaas(at)gmail(dot)com>, 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: 2023-02-08 05:44:47
Message-ID: 20230208054447.lzlnqaj4e7phzvaf@awork3.anarazel.de
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On 2023-02-08 13:12:15 +0900, Michael Paquier wrote:
> On Thu, Feb 02, 2023 at 11:14:39AM +0900, Michael Paquier wrote:
> > Actually, I completely forgot to take into account that there is a
> > minor release planned for next week:
> > https://www.postgresql.org/developer/roadmap/
> >
> > So I'll hold on a bit longer here, until the next versions get their
> > tags.
>
> So, the backpatch down to 12 is straight-forward, with some conflicts
> in ./configure. ~12 handles also differently its CFLAGS with
> pg_config.h.win32. 11 is more annoying because it lacks
> HAVE_SYS_PROCCTL_H and it would need a partial backport of f98b847. I
> am not completely sure if this could have more side effects, though,
> even if the part of pmsignal.c is left out. It should not..
>
> At the end, I have just done this stuff down to ~12, 11 does not seem
> worth the trouble as the next stable version to go out of support.
> I'll reduce gokiburi's script a bit, as a result, until the oldest
> version support is v12.

That seems reasonable to me.

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