| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Andres Freund <andres(at)2ndquadrant(dot)com> |
| Cc: | Robert Haas <robertmhaas(at)gmail(dot)com>, Gurjeet Singh <gurjeet(at)singh(dot)im>, Peter Eisentraut <peter_e(at)gmx(dot)net>, PGSQL Hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: /proc/self/oom_adj is deprecated in newer Linux kernels |
| Date: | 2014-06-10 15:40:25 |
| Message-ID: | 31103.1402414825@sss.pgh.pa.us |
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| Lists: | pgsql-hackers |
Andres Freund <andres(at)2ndquadrant(dot)com> writes:
> On 2014-06-10 11:14:43 -0400, Tom Lane wrote:
>> Because it would convert the intended behavior (postmaster and only
>> postmaster is exempt from OOM kill) into a situation where possibly
>> all of the database processes are exempt from OOM kill, at the whim
>> of somebody who should not have the privilege to decide that.
> Meh^3. By that argument we need to forbid superusers to create any form
> of untrusted functions. Forbid anything that does malloc(), system(),
> fork(), whatever from a user's influence.
That's utter and complete nonsense. We're discussing an operation that is
root-privileged (ie, lowering a process's OOM score), not random stuff
that unprivileged processes can do.
regards, tom lane
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