Thomas Tai 4e57482e84 dma-direct: Fix potential NULL pointer dereference ...

[ Upstream commit f959dcd6dd ]

When booting the kernel v5.9-rc4 on a VM, the kernel would panic when
printing a warning message in swiotlb_map(). The dev->dma_mask must not
be a NULL pointer when calling the dma mapping layer. A NULL pointer
check can potentially avoid the panic.

Signed-off-by: Thomas Tai <thomas.tai@oracle.com>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2020-10-29 10:12:15 +01:00

..

coherent.c

dma-coherent: fix integer overflow in the reserved-memory dma allocation

2020-03-16 10:43:02 +01:00

contiguous.c

dma-contiguous: cleanup dma_alloc_contiguous

2020-07-28 13:42:15 +02:00

debug.c

dma-debug: remove debug_dma_assert_idle() function

2020-08-14 15:22:43 -07:00

direct.c

dma-pool: fix coherent pool allocations for IOMMU mappings

2020-08-14 16:27:00 +02:00

dummy.c

dma-mapping: factor out dummy DMA ops

2018-12-13 21:06:12 +01:00

Kconfig

Merge tag 'sh-for-5.9' of git://git.libc.org/linux-sh

2020-08-15 18:50:32 -07:00

Makefile

dma-mapping: make support for dma ops optional

2020-07-19 09:29:23 +02:00

mapping.c

dma-direct: Fix potential NULL pointer dereference

2020-10-29 10:12:15 +01:00

pool.c

dma-pool: Fix an uninitialized variable bug in atomic_pool_expand()

2020-08-27 09:22:56 +02:00

remap.c

dma-remap: align the size in dma_common_*_remap()

2020-06-23 14:14:41 +02:00

swiotlb.c

dma-direct: improve swiotlb error reporting

2020-02-05 18:53:05 +01:00

virt.c

dma-mapping: zero memory returned from dma_alloc_*

2018-12-20 08:13:52 +01:00