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Re: kvm causing memory corruption? now 2.6.26-rc8

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From: Dave Hansen <dave@...>
To: Avi Kivity <avi@...>
Cc: linux-kernel@vger.kernel.org <linux-kernel@...>, kvm-devel <kvm@...>, Anthony N. Liguori [imap] <aliguori@...>
Subject: Re: kvm causing memory corruption? now 2.6.26-rc8
Date: Tuesday, July 15, 2008 - 2:57 pm

So, just a continuation of what we were talking about before...

I just had a bug triggered on my system because I'm running sparsemem
(it was in show_mem()).  I wonder if sparsemem is contributing to the
bug.  Does kvm ever do any arithmetic that you can think of with 'struct
page's?

To summarize my config: 
* 4GB of RAM
* hole from 3-4GB (so ram ranges from 0-5GB)
* PAE enabled
* SPARSEMEM=y

http://sr71.net/~dave/linux/config-2.6.26-rc8-00089-ge1441b9

I'm compiling a kernel right now to try without sparsemem.

-- Dave

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Messages in current thread:
kvm causing memory corruption? ~2.6.25-rc6, Dave Hansen, (Tue Mar 25, 5:12 pm)
Re: [kvm-devel] kvm causing memory corruption? ~2.6.25-rc6, Avi Kivity, (Wed Mar 26, 5:50 am)
Re: [kvm-devel] kvm causing memory corruption? ~2.6.25-rc6, Dave Hansen, (Wed Mar 26, 12:52 pm)
Re: [kvm-devel] kvm causing memory corruption? ~2.6.25-rc6, Avi Kivity, (Wed Mar 26, 12:58 pm)
Re: [kvm-devel] kvm causing memory corruption? ~2.6.25-rc6, Dave Hansen, (Wed Mar 26, 1:16 pm)
Re: [kvm-devel] kvm causing memory corruption? ~2.6.25-rc6, Avi Kivity, (Thu Mar 27, 5:36 am)
Re: [kvm-devel] kvm causing memory corruption? ~2.6.25-rc6, Dave Hansen, (Thu Mar 27, 11:50 am)
Re: [kvm-devel] kvm causing memory corruption? ~2.6.25-rc6, Avi Kivity, (Thu Mar 27, 11:53 am)
Re: [kvm-devel] kvm causing memory corruption? ~2.6.25-rc6, Dave Hansen, (Thu Mar 27, 12:30 pm)
Re: [kvm-devel] kvm causing memory corruption? ~2.6.25-rc6, Avi Kivity, (Thu Mar 27, 6:10 am)
Re: [kvm-devel] kvm causing memory corruption? ~2.6.25-rc6, Dave Hansen, (Thu Mar 27, 10:55 am)
Re: [kvm-devel] kvm causing memory corruption? ~2.6.25-rc6, Avi Kivity, (Thu Mar 27, 10:59 am)
Re: kvm causing memory corruption? now 2.6.26-rc4, Dave Hansen, (Mon Jun 2, 6:30 pm)
Re: kvm causing memory corruption? now 2.6.26-rc4, Avi Kivity, (Wed Jun 4, 9:42 am)
Re: kvm causing memory corruption? now 2.6.26-rc4, Dave Hansen, (Fri Jun 6, 3:41 am)
Re: kvm causing memory corruption? now 2.6.26-rc4, Avi Kivity, (Thu Jun 12, 9:10 am)
Re: kvm causing memory corruption? now 2.6.26-rc8, Dave Hansen, (Tue Jul 15, 2:57 pm)
Re: kvm causing memory corruption? now 2.6.26, Dave Hansen, (Wed Jul 16, 5:44 pm)
Re: kvm causing memory corruption? now 2.6.26, Avi Kivity, (Thu Jul 17, 1:38 am)
KVM overflows the stack, Dave Hansen, (Wed Jul 16, 6:48 pm)
Re: KVM overflows the stack, Dave Hansen, (Thu Jul 17, 2:27 am)
Re: KVM overflows the stack, Avi Kivity, (Thu Jul 17, 1:52 am)
[PATCH] update kvm's anon_inodes.c for r/o bind mounts, Dave Hansen, (Thu Jul 17, 2:45 am)
Re: [PATCH] update kvm's anon_inodes.c for r/o bind mounts, Avi Kivity, (Sat Jul 19, 3:33 am)
Re: KVM overflows the stack, Dave Hansen, (Thu Jul 17, 2:14 am)
Re: KVM overflows the stack, Avi Kivity, (Thu Jul 17, 2:42 am)
Re: KVM overflows the stack, Roland Dreier, (Thu Jul 17, 2:08 am)
Re: KVM overflows the stack, Dave Hansen, (Thu Jul 17, 10:06 am)
Re: KVM overflows the stack, Avi Kivity, (Thu Jul 17, 10:15 am)
Re: kvm causing memory corruption? now 2.6.26-rc4, Dave Hansen, (Mon Jun 16, 2:07 pm)
Re: kvm causing memory corruption? now 2.6.26-rc4, Dave Hansen, (Mon Jun 2, 8:59 pm)
Re: [kvm-devel] kvm causing memory corruption? ~2.6.25-rc6, Dave Hansen, (Thu Mar 27, 12:30 pm)