AcoSail/kernel_optimize_test
8
0
Fork 0
forked from luck/tmp_suning_uos_patched
Code Pull Requests Activity

iommu: Fix off by one in dmar_get_fault_reason()

Browse Source 
fault_reason - 0x20 == ARRAY_SIZE(irq_remap_fault_reasons) is
one past the end of the array.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Joerg Roedel <joerg.roedel@amd.com>
Cc: Youquan Song <youquan.song@intel.com>
Cc: walter harms <wharms@bfs.de>
Cc: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: <stable@kernel.org>
Link: http://lkml.kernel.org/r/20120513170938.GA4280@elgon.mountain
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Dan Carpenter 2012-05-13 20:09:38 +03:00 committed by Ingo Molnar
parent c558df4a01
commit fefe1ed139
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/iommu/dmar.c
View File

@ -1057,7 +1057,7 @@ static const char *irq_remap_fault_reasons[] =
const char *dmar_get_fault_reason(u8 fault_reason, int *fault_type)
{
if (fault_reason >= 0x20 && (fault_reason <= 0x20 +
if (fault_reason >= 0x20 && (fault_reason - 0x20 <
ARRAY_SIZE(irq_remap_fault_reasons))) {
*fault_type = INTR_REMAP;
return irq_remap_fault_reasons[fault_reason - 0x20];