Re: [PATCH] dma-iommu: Add a check to avoid dereference null pointer in function iommu_dma_map_sg()

在 2021/5/21 18:36, Robin Murphy 写道: On 2021-05-21 04:05, chenxiang wrote: From: Xiang Chen The issue is reported by tool TscanCode, and it is possible to deference null pointer when prev is NULL which is the initial value. No it isn't. This is literally explained in the comment visible in

Re: [PATCH] dma-iommu: Add a check to avoid dereference null pointer in function iommu_dma_map_sg()

On 2021-05-21 04:05, chenxiang wrote: From: Xiang Chen The issue is reported by tool TscanCode, and it is possible to deference null pointer when prev is NULL which is the initial value. No it isn't. This is literally explained in the comment visible in the diff context below... Robin. S

[PATCH] dma-iommu: Add a check to avoid dereference null pointer in function iommu_dma_map_sg()

From: Xiang Chen The issue is reported by tool TscanCode, and it is possible to deference null pointer when prev is NULL which is the initial value. Signed-off-by: Xiang Chen --- drivers/iommu/dma-iommu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iommu/dma-iom