linux-kernel - Re: [GIT PULL] x86/kaslr for v3.14

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Message-ID: <52E5EFAF.3060609@linux.intel.com>
Date:	Sun, 26 Jan 2014 21:33:35 -0800
From:	"H. Peter Anvin" <hpa@...ux.intel.com>
To:	Richard Weinberger <richard.weinberger@...il.com>,
	"H. Peter Anvin" <hpa@...or.com>
CC:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Cong Ding <dinggnu@...il.com>, Ingo Molnar <mingo@...e.hu>,
	Ingo Molnar <mingo@...nel.org>,
	Kees Cook <keescook@...omium.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Mathias Krause <minipli@...glemail.com>,
	Michael Davidson <md@...gle.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Wei Yongjun <yongjun_wei@...ndmicro.com.cn>
Subject: Re: [GIT PULL] x86/kaslr for v3.14

On 01/26/2014 02:16 AM, Richard Weinberger wrote:
> 
> Currently we print the kernel offset only upon a panic() using the
> panic notifier list.
> This way it does not show up if the kernel hits a BUG() in process
> context or something less critical.
> Wouldn't make more sense to report the offset in every dump_stack() or
> show_regs() call?

No, because that information is available to user space unless we panic.

	-hpa

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