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Prevent Linux kernel from logging segfaults of user processes

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  Prevent Linux kernel from logging segfaults of user processes "Steve Keller" <keller.steve@gmx.de> - 2018-05-29 13:50 +0200
    Re: Prevent Linux kernel from logging segfaults of user processes Urs Thuermann <urs@isnogud.escape.de> - 2018-05-30 04:20 +0200

#196190 — Prevent Linux kernel from logging segfaults of user processes

Since quite a long time the Linux kernel prints log messages about
processes that cause a segmentation fault, but it has not always
been that way (Linux 2.x, maybe also 3.x versions, AFAIR).

On a multi-user system, where users develop & debug software it is
annoying for the admin to see all these messages in dmesg.

So my question is can these messages been turned off, either completely
or for certain (effective or real) user ids, e.g. uid above 1000?

Steve

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#196231

Steve Keller <keller.steve@gmx.de> writes:

> Since quite a long time the Linux kernel prints log messages about
> processes that cause a segmentation fault, but it has not always
> been that way (Linux 2.x, maybe also 3.x versions, AFAIR).
> 
> On a multi-user system, where users develop & debug software it is
> annoying for the admin to see all these messages in dmesg.
> 
> So my question is can these messages been turned off, either completely
> or for certain (effective or real) user ids, e.g. uid above 1000?

I think you're looking for

    echo 0 > /proc/sys/debug/exception-trace

I'm not aware of a way to disable this only for certain uids.

urs

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