From: WANG Cong <xiyou.wangcong@gmail.com>
To: kexec@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Subject: Re: [PATCH] kexec: include sysctl to disable
Date: Thu, 20 Jan 2011 05:21:50 +0000 (UTC) [thread overview]
Message-ID: <ih8gpe$41t$1@dough.gmane.org> (raw)
In-Reply-To: 20110119222630.6755.63928.stgit@paris.rdu.redhat.com
On Wed, 19 Jan 2011 17:26:30 -0500, Eric Paris wrote:
> much like /proc/sys/kernel/modules_disable is used to disable module
> loading, /proc/sys/kernel/kexec_disable is used to disable kexec code
> loading. It would still be possible to use kexec -l to load a kernel,
> set the tunable to 1 so the kernel waiting to boot couldn't change, and
> then launch the kernel at a later time (through kexec -e or through a
> crash)
>
But root can still change it to 0 and do kexec like normal, right?
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WARNING: multiple messages have this Message-ID (diff)
From: WANG Cong <xiyou.wangcong@gmail.com>
To: linux-kernel@vger.kernel.org
Cc: kexec@lists.infradead.org
Subject: Re: [PATCH] kexec: include sysctl to disable
Date: Thu, 20 Jan 2011 05:21:50 +0000 (UTC) [thread overview]
Message-ID: <ih8gpe$41t$1@dough.gmane.org> (raw)
In-Reply-To: 20110119222630.6755.63928.stgit@paris.rdu.redhat.com
On Wed, 19 Jan 2011 17:26:30 -0500, Eric Paris wrote:
> much like /proc/sys/kernel/modules_disable is used to disable module
> loading, /proc/sys/kernel/kexec_disable is used to disable kexec code
> loading. It would still be possible to use kexec -l to load a kernel,
> set the tunable to 1 so the kernel waiting to boot couldn't change, and
> then launch the kernel at a later time (through kexec -e or through a
> crash)
>
But root can still change it to 0 and do kexec like normal, right?
next prev parent reply other threads:[~2011-01-20 5:30 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-19 22:26 [PATCH] kexec: include sysctl to disable Eric Paris
2011-01-19 22:26 ` Eric Paris
2011-01-20 5:21 ` WANG Cong [this message]
2011-01-20 5:21 ` WANG Cong
2011-01-20 5:32 ` WANG Cong
2011-01-20 5:32 ` WANG Cong
2011-01-27 18:40 ` Eric Paris
2011-01-27 18:40 ` Eric Paris
2011-01-27 18:50 ` Vivek Goyal
2011-01-27 18:50 ` Vivek Goyal
2011-01-27 18:56 ` Neil Horman
2011-01-27 18:56 ` Neil Horman
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