diff options
| author | Dan Carpenter <[email protected]> | 2012-05-13 20:09:38 +0300 |
|---|---|---|
| committer | Ingo Molnar <[email protected]> | 2012-05-14 14:37:47 +0200 |
| commit | fefe1ed1398b81e3fadc92d11d91162d343c8836 (patch) | |
| tree | 4d3a4bb29e7afc03ab7f1669727bb1e082ce8226 | |
| parent | c558df4a01a9ec7b02303aba808d1e5044822add (diff) | |
iommu: Fix off by one in dmar_get_fault_reason()
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]>
Cc: <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>
| -rw-r--r-- | drivers/iommu/dmar.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/iommu/dmar.c b/drivers/iommu/dmar.c index 5ef65cf66152..3a74e4410fc0 100644 --- a/drivers/iommu/dmar.c +++ b/drivers/iommu/dmar.c @@ -1057,8 +1057,8 @@ 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 + - ARRAY_SIZE(irq_remap_fault_reasons))) { + 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]; } else if (fault_reason < ARRAY_SIZE(dma_remap_fault_reasons)) { |