Displaying 2 results from an estimated 2 matches for "ef0cf9537abc".
2019 Jul 22
0
[PATCH 1/2] dma-mapping: Protect dma_addressing_limited against NULL dma_mask
...: Eric Auger <eric.auger at redhat.com>
---
v1 -> v2:
- add a WARN_ON_ONCE()
- reword the commit message
---
include/linux/dma-mapping.h | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h
index e11b115dd0e4..ef0cf9537abc 100644
--- a/include/linux/dma-mapping.h
+++ b/include/linux/dma-mapping.h
@@ -689,8 +689,9 @@ static inline int dma_coerce_mask_and_coherent(struct device *dev, u64 mask)
*/
static inline bool dma_addressing_limited(struct device *dev)
{
- return min_not_zero(*dev->dma_mask, dev->bus_dma...
2019 Jul 22
6
[PATCH 0/2] Fix NULL pointer dereference with virtio-blk-pci and virtual IOMMU
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