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From: Vivek Goyal <vgoyal@redhat.com>
To: "Thomas D." <whissi@whissi.de>
Cc: kexec@lists.infradead.org, Kees Cook <keescook@chromium.org>,
	WANG Chao <chaowang@redhat.com>
Subject: Re: kexec fails to boot kernels where CONFIG_RANDOMIZE_BASE=y is set
Date: Mon, 18 Aug 2014 10:57:18 -0400	[thread overview]
Message-ID: <20140818145718.GD4745@redhat.com> (raw)
In-Reply-To: <53F11882.3060803@whissi.de>

Hi Thomas,

I think kexec is broken with CONFIG_RANDOMIZE_BASE=y. Chao had raised
this issue some time back when this option was introduced. I don't
remember the details though that why it is broken.

CCing Kees Cook. 

Kees, is there a quick fix to the issue. Sooner or later people will
start enabling CONFIG_RANDOMIZE_BASE=y and broken kexec will be a
big issue.

Thanks
Vivek
 
On Sun, Aug 17, 2014 at 11:02:58PM +0200, Thomas D. wrote:
> Hi,
> 
> looks like kexec doesn't support kernels where
> 
>   CONFIG_RANDOMIZE_BASE=y
> 
> is set.
> 
> 
> I already created a bug for Debian in June for this problem [1].
> 
> I am able to confirm the same problem with kexec 2.0.7 on Gentoo and
> when building from source (943ba35f8143408d8ada9a24d0986663cc612df9).
> 
> Is this a known problem/limitation?
> 
> Is there anything I can help you with to get this fixed?
> 
> Thanks.
> 
> 
> See also:
> =========
> [1] https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=754288
> 
> 
> -Thomas
> 
> _______________________________________________
> kexec mailing list
> kexec@lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/kexec

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  reply	other threads:[~2014-08-18 14:57 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-08-17 21:02 kexec fails to boot kernels where CONFIG_RANDOMIZE_BASE=y is set Thomas D.
2014-08-18 14:57 ` Vivek Goyal [this message]
2014-08-19  9:07   ` WANG Chao
2014-08-20 14:33     ` Vivek Goyal
2014-08-21 15:57       ` Kees Cook
2014-08-21 18:10         ` Vivek Goyal
2014-08-21 19:02           ` Vivek Goyal
2014-08-21 19:27             ` Thomas D.
2014-08-22 18:18               ` Kexec failing in handle_relocations() (Was: Re: kexec fails to boot kernels where CONFIG_RANDOMIZE_BASE=y is set) Vivek Goyal
2014-08-21 19:16           ` kexec fails to boot kernels where CONFIG_RANDOMIZE_BASE=y is set Vivek Goyal
2014-08-22  3:19           ` WANG Chao
2014-08-22 11:59             ` Baoquan He
2014-08-22 12:30               ` Thomas D.
2014-08-22 12:40                 ` Vivek Goyal
2014-08-22 13:23                   ` Thomas D.
2014-08-22 13:16               ` Vivek Goyal
2014-08-22 14:44                 ` Baoquan He
2014-08-22 12:38             ` Vivek Goyal
2014-08-22 12:47               ` Thomas D.
2014-08-22 12:53                 ` Vivek Goyal
2014-08-22 14:59                   ` Baoquan He

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