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| From | Pavel Machek <pavel@ucw.cz> |
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH 1/2] security: Change name of CONFIG_DEBUG_RODATA |
| Date | Wed, 25 Jan 2017 15:00:04 +0100 |
| Message-ID | <t3whe-2sl-65@gated-at.bofh.it> (permalink) |
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| Lines | 65 |
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| X-Original-Cc | Kees Cook <keescook@chromium.org>, Jason Wessel <jason.wessel@windriver.com>, Jonathan Corbet <corbet@lwn.net>, Russell King <linux@armlinux.org.uk>, Catalin Marinas <catalin.marinas@arm.com>, Will Deacon <will.deacon@arm.com>, "James E.J. Bottomley" <jejb@parisc-linux.org>, Helge Deller <deller@gmx.de>, Martin Schwidefsky <schwidefsky@de.ibm.com>, Heiko Carstens <heiko.carstens@de.ibm.com>, Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>, x86@kernel.org, Rob Herring <robh@kernel.org>, "Rafael J. Wysocki" <rjw@rjwysocki.net>, Len Brown <len.brown@intel.com>, Mark Rutland <mark.rutland@arm.com>, Jessica Yu <jeyu@redhat.com>, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-parisc@vger.kernel.org, linux-s390@vger.kernel.org, linux-pm@vger.kernel.org, kernel-hardening@lists.openwall.com |
| X-Original-Date | Wed, 25 Jan 2017 14:51:24 +0100 |
| X-Original-Message-ID | <20170125135124.GA20896@amd> |
| X-Original-References | <1484789346-21012-1-git-send-email-labbott@redhat.com> <1484789346-21012-2-git-send-email-labbott@redhat.com> <20170119075341.GA14530@amd> <fca01775-9640-8783-a657-a9e6cf0c3e0a@redhat.com> |
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On Wed 2017-01-25 12:21:05, Laura Abbott wrote: > On 01/19/2017 08:53 AM, Pavel Machek wrote: > >On Wed 2017-01-18 17:29:05, Laura Abbott wrote: > >> > >>Despite the word 'debug' in CONFIG_DEBUG_RODATA, this kernel option > >>provides key security features that are to be expected on a modern > >>system. Change the name to CONFIG_HARDENED_PAGE_MAPPINGS which more > >>accurately describes what this option is intended to do. > > > >I think this is bad change. CONFIG_DEBUG_RODATA is describing what it > >does, CONFIG_HARDENED_PAGE_MAPPINGS is advertising. > > > >We don't do advertising, and we don't force people to re-answer the > >config questions without good reason. > > > >CONFIG_HARDENED_RODATA might fix the first problem, but not the second > >one. > > > > Pavel > > > > (Apologies, my SMTP was set up incorrectly so my response didn't > actually get sent out) > > CONFIG_DEBUG_RODATA isn't describing what it does though. It misses > that this config may handle much more than just rodata. I think > Mark Rutland's suggestion of STRICT_KERNEL_RWX might be more > descriptive. CONFIG_BUG=y CONFIG_LBDAF=y CONFIG_PM_OPP=y ..it is config option. It is not description of the feature. People are living with that config option for a while. I'd keep it. Maybe you can go from CONFIG_DEBUG_RODATA to CONFIG_RODATA... (but you'll still have people re-answer config option.) Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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[PATCH 1/2] security: Change name of CONFIG_DEBUG_RODATA Laura Abbott <labbott@redhat.com> - 2017-01-19 02:40 +0100
Re: [PATCH 1/2] security: Change name of CONFIG_DEBUG_RODATA Pavel Machek <pavel@ucw.cz> - 2017-01-19 09:00 +0100
Re: [PATCH 1/2] security: Change name of CONFIG_DEBUG_RODATA Laura Abbott <labbott@redhat.com> - 2017-01-25 12:30 +0100
Re: [PATCH 1/2] security: Change name of CONFIG_DEBUG_RODATA Pavel Machek <pavel@ucw.cz> - 2017-01-25 15:00 +0100
Re: [PATCH 1/2] security: Change name of CONFIG_DEBUG_RODATA Mark Rutland <mark.rutland@arm.com> - 2017-01-19 12:00 +0100
Re: [PATCH 1/2] security: Change name of CONFIG_DEBUG_RODATA Heiko Carstens <heiko.carstens@de.ibm.com> - 2017-01-19 12:40 +0100
Re: [PATCH 1/2] security: Change name of CONFIG_DEBUG_RODATA Helge Deller <deller@gmx.de> - 2017-01-19 22:20 +0100
Re: [PATCH 1/2] security: Change name of CONFIG_DEBUG_RODATA Laura Abbott <labbott@redhat.com> - 2017-01-25 12:40 +0100
Re: [PATCH 1/2] security: Change name of CONFIG_DEBUG_RODATA Kees Cook <keescook@chromium.org> - 2017-01-19 23:10 +0100
Re: [PATCH 1/2] security: Change name of CONFIG_DEBUG_RODATA Laura Abbott <labbott@redhat.com> - 2017-01-25 12:30 +0100
Re: [PATCH 1/2] security: Change name of CONFIG_DEBUG_RODATA Kees Cook <keescook@chromium.org> - 2017-01-19 23:10 +0100
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