This is a note to let you know that I've just added the patch titled
iommu: Fix off by one in dmar_get_fault_reason()
to the 3.4-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:
iommu-fix-off-by-one-in-dmar_get_fault_reason.patch
and it can be found in the queue-3.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
From: Dan Carpenter <[email protected]>
Date: Sun, 13 May 2012 20:09:38 +0300
Subject: iommu: Fix off by one in dmar_get_fault_reason()
From: Dan Carpenter <[email protected]>
commit fefe1ed1398b81e3fadc92d11d91162d343c8836 upstream.
fault_reason - 0x20 == ARRAY_SIZE(irq_remap_fault_reasons) is
one past the end of the array.
Signed-off-by: Dan Carpenter <[email protected]>
Cc: Joerg Roedel <[email protected]>
Cc: Youquan Song <[email protected]>
Cc: walter harms <[email protected]>
Cc: Suresh Siddha <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>
[bwh: Backported to 3.2: s/irq_remap_fault_reasons/intr_remap_fault_reasons/]
Signed-off-by: Ben Hutchings <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/iommu/dmar.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/iommu/dmar.c
+++ b/drivers/iommu/dmar.c
@@ -1056,8 +1056,8 @@ static const char *intr_remap_fault_reas
const char *dmar_get_fault_reason(u8 fault_reason, int *fault_type)
{
- if (fault_reason >= 0x20 && (fault_reason <= 0x20 +
- ARRAY_SIZE(intr_remap_fault_reasons))) {
+ if (fault_reason >= 0x20 && (fault_reason - 0x20 <
+ ARRAY_SIZE(intr_remap_fault_reasons))) {
*fault_type = INTR_REMAP;
return intr_remap_fault_reasons[fault_reason - 0x20];
} else if (fault_reason < ARRAY_SIZE(dma_remap_fault_reasons)) {
Patches currently in stable-queue which might be from [email protected]
are
queue-3.4/iommu-fix-off-by-one-in-dmar_get_fault_reason.patch
queue-3.4/hvc_xen-null-dereference-on-allocation-failure.patch
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