From: Chris Wright <chrisw@sous-sol.org>
To: Tobias Diedrich <ranma+kernel@tdiedrich.de>,
Chris Wright <chrisw@sous-sol.org>, Avi Kivity <avi@qumranet.com>,
kvm@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: kvm: unable to handle kernel NULL pointer dereference
Date: Thu, 5 Jun 2008 00:27:28 -0700 [thread overview]
Message-ID: <20080605072728.GF30402@sequoia.sous-sol.org> (raw)
In-Reply-To: <20080605060931.GA11704@yamamaya.is-a-geek.org>
* Tobias Diedrich (ranma+kernel@tdiedrich.de) wrote:
> Almost:
> ranma@melchior:~/src/linux-2.6.26-rc4.forcedwol$ gdb -q vmlinux
> Using host libthread_db library "/lib/libthread_db.so.1".
> (gdb) p/x 0xffffffff8021d456 + 0x6f9cba
> $1 = 0xffffffff80917110
> (gdb) p/x &per_cpu__svm_data
> $2 = 0xffffffff809170f8
> (gdb)
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.
Do you ever see this in dmesg?
svm_cpu_init: svm_data is NULL on 0
thanks,
chris
next prev parent reply other threads:[~2008-06-05 7:27 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-06-01 8:48 kvm: unable to handle kernel NULL pointer dereference Tobias Diedrich
2008-06-04 10:41 ` Avi Kivity
2008-06-04 18:10 ` Tobias Diedrich
2008-06-05 4:25 ` Chris Wright
2008-06-05 6:09 ` Tobias Diedrich
2008-06-05 7:27 ` Chris Wright [this message]
2008-06-05 18:28 ` Tobias Diedrich
2008-06-05 18:34 ` Chris Wright
2008-06-29 18:02 ` Tobias Diedrich
2008-06-29 18:28 ` [PATCH] " Tobias Diedrich
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