linux-kernel - Re: [RFC][PATCH] tracing: Print nasty banner when trace

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Date:	Fri, 30 May 2014 08:07:13 +0200
From:	Olaf Titz <olaf@...red.inka.de>
To:	linux-kernel@...r.kernel.org
Subject: Re: [RFC][PATCH] tracing: Print nasty banner when trace_printk() is in use

>   *********************************************************
>   ** NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE    **

Is it really that bad to warrant this kind of warning? Not knowing
about the issue at all, I read from the original description that the
wastage is four pages of memory times number of CPU cores, which
shouldn't matter much except for small embedded systems.

Or does this something much scarier, like considerably slowing down
fast paths?

Olaf
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/