* [PATCH 0/2] Fix NULL pointer dereference with virtio-blk-pci and virtual IOMMU
@ 2019-07-22 14:55 Eric Auger
0 siblings, 0 replies; 3+ messages in thread
From: Eric Auger @ 2019-07-22 14:55 UTC (permalink / raw)
To: eric.auger.pro, eric.auger, hch, m.szyprowski, robin.murphy, mst,
jasowang, virtualization, iommu, linux-kernel
When running a guest featuring a virtio-blk-pci protected with a virtual
IOMMU we hit a NULL pointer dereference.
This series removes the dma_max_mapping_size() call in
virtio_max_dma_size when the device does not have any dma_mask set.
A check is also added to early return in dma_addressing_limited()
if the dma_mask is NULL.
Eric Auger (2):
dma-mapping: Protect dma_addressing_limited against NULL dma_mask
virtio/virtio_ring: Fix the dma_max_mapping_size call
drivers/virtio/virtio_ring.c | 2 +-
include/linux/dma-mapping.h | 5 +++--
2 files changed, 4 insertions(+), 3 deletions(-)
--
2.20.1
^ permalink raw reply [flat|nested] 3+ messages in thread
* [PATCH 0/2] Fix NULL pointer dereference with virtio-blk-pci and virtual IOMMU
@ 2019-07-22 14:55 ` Eric Auger
0 siblings, 0 replies; 3+ messages in thread
From: Eric Auger @ 2019-07-22 14:55 UTC (permalink / raw)
To: eric.auger.pro, eric.auger, hch, m.szyprowski, robin.murphy, mst,
jasowang, virtualization, iommu, linux-kernel
When running a guest featuring a virtio-blk-pci protected with a virtual
IOMMU we hit a NULL pointer dereference.
This series removes the dma_max_mapping_size() call in
virtio_max_dma_size when the device does not have any dma_mask set.
A check is also added to early return in dma_addressing_limited()
if the dma_mask is NULL.
Eric Auger (2):
dma-mapping: Protect dma_addressing_limited against NULL dma_mask
virtio/virtio_ring: Fix the dma_max_mapping_size call
drivers/virtio/virtio_ring.c | 2 +-
include/linux/dma-mapping.h | 5 +++--
2 files changed, 4 insertions(+), 3 deletions(-)
--
2.20.1
^ permalink raw reply [flat|nested] 3+ messages in thread
* [PATCH 0/2] Fix NULL pointer dereference with virtio-blk-pci and virtual IOMMU
@ 2019-07-22 14:55 ` Eric Auger
0 siblings, 0 replies; 3+ messages in thread
From: Eric Auger @ 2019-07-22 14:55 UTC (permalink / raw)
To: eric.auger.pro, eric.auger, hch, m.szyprowski, robin.murphy, mst,
jasowang, virtualization, iommu, linux-kernel
When running a guest featuring a virtio-blk-pci protected with a virtual
IOMMU we hit a NULL pointer dereference.
This series removes the dma_max_mapping_size() call in
virtio_max_dma_size when the device does not have any dma_mask set.
A check is also added to early return in dma_addressing_limited()
if the dma_mask is NULL.
Eric Auger (2):
dma-mapping: Protect dma_addressing_limited against NULL dma_mask
virtio/virtio_ring: Fix the dma_max_mapping_size call
drivers/virtio/virtio_ring.c | 2 +-
include/linux/dma-mapping.h | 5 +++--
2 files changed, 4 insertions(+), 3 deletions(-)
--
2.20.1
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^ permalink raw reply [flat|nested] 3+ messages in thread
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2019-07-22 14:55 [PATCH 0/2] Fix NULL pointer dereference with virtio-blk-pci and virtual IOMMU Eric Auger
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2019-07-22 14:55 ` Eric Auger
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