This is a note to let you know that I've just added the patch titled
x86/kvm: Fix pvclock vsyscall fixmap
to the 3.8-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
x86-kvm-fix-pvclock-vsyscall-fixmap.patch
and it can be found in the queue-3.8 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 3d2a80a230250c2534ce5b17503670adaf1d7fff Mon Sep 17 00:00:00 2001
From: Peter Hurley <peter@xxxxxxxxxxxxxxxxxx>
Date: Wed, 27 Feb 2013 15:28:28 -0500
Subject: x86/kvm: Fix pvclock vsyscall fixmap
From: Peter Hurley <peter@xxxxxxxxxxxxxxxxxx>
commit 3d2a80a230250c2534ce5b17503670adaf1d7fff upstream.
The physical memory fixmapped for the pvclock clock_gettime vsyscall
was allocated, and thus is not a kernel symbol. __pa() is the proper
method to use in this case.
Fixes the crash below when booting a next-20130204+ smp guest on a
3.8-rc5+ KVM host.
[ 0.666410] udevd[97]: starting version 175
[ 0.674043] udevd[97]: udevd:[97]: segfault at ffffffffff5fd020
ip 00007fff069e277f sp 00007fff068c9ef8 error d
Acked-by: Marcelo Tosatti <mtosatti@xxxxxxxxxx>
Signed-off-by: Peter Hurley <peter@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Gleb Natapov <gleb@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/x86/kernel/pvclock.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/x86/kernel/pvclock.c
+++ b/arch/x86/kernel/pvclock.c
@@ -185,7 +185,7 @@ int __init pvclock_init_vsyscall(struct
for (idx = 0; idx <= (PVCLOCK_FIXMAP_END-PVCLOCK_FIXMAP_BEGIN); idx++) {
__set_fixmap(PVCLOCK_FIXMAP_BEGIN + idx,
- __pa_symbol(i) + (idx*PAGE_SIZE),
+ __pa(i) + (idx*PAGE_SIZE),
PAGE_KERNEL_VVAR);
}
Patches currently in stable-queue which might be from peter@xxxxxxxxxxxxxxxxxx are
queue-3.8/x86-pvclock-kvm-align-allocation-size-to-page-size.patch
queue-3.8/ipc-don-t-allocate-a-copy-larger-than-max.patch
queue-3.8/ipc-fix-potential-oops-when-src-msg-4k-w-msg_copy.patch
queue-3.8/x86-kvm-fix-pvclock-vsyscall-fixmap.patch
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