linux-kernel - Re: kvm: unable to handle kernel NULL pointer dereference

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Message-ID: <20080605182847.GA12176@yamamaya.is-a-geek.org>
Date:	Thu, 5 Jun 2008 20:28:49 +0200
From:	Tobias Diedrich <ranma+kernel@...edrich.de>
To:	Chris Wright <chrisw@...s-sol.org>
Cc:	Avi Kivity <avi@...ranet.com>, kvm@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: kvm: unable to handle kernel NULL pointer dereference

Chris Wright wrote:
> Sorry, my math was bad.  I gave you 0xffffffff8021d44f + 7 + 0x6f9cba,
> but it should have been 0xffffffff8021d44f - 17 + 0x6f9cba.  Which is
> correct (as one would hope, it was a grasp at straws).
> 
> Oh, wait.  Is this a laptop?  Do you suspend/resume?  Suspend will free
> svm_data, and on resume, any launching a guest will definitely hit the
> oops you are seeing.

No, this is my desktop, but I hibernate daily and always see below
message.

> Do you ever see this in dmesg?
> 
>   svm_cpu_init: svm_data is NULL on 0

Yes:
[...]
PM: Creating hibernation image: 
PM: Need to copy 126181 pages
PM: Normal pages needed: 126181 + 1024 + 38, available pages: 397721
x86 PAT enabled: cpu 0, old 0x7040600070406, new 0x7010600070106
svm_cpu_init: svm_data is NULL on 0
[...]

-- 
Tobias						PGP: http://9ac7e0bc.uguu.de
このメールは十割再利用されたビットで作られています。
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