On Wed, Jul 01, 2026 at 11:19:07AM +0530, Aneesh Kumar K.V (Arm) wrote:
> The non-blocking, non-coherent allocation path uses dma_alloc_from_pool(),
> which returns the allocated page and fills cpu_addr only on success.
>
> Do not rely on cpu_addr to detect allocation failure in this path. Check
> the returned page directly before using it for the IOMMU mapping.
>
> Fixes: 9420139f516d ("dma-pool: fix coherent pool allocations for IOMMU
> mappings")
> Tested-by: Michael Kelley <[email protected]>
> Tested-by: Mostafa Saleh <[email protected]>
> Reviewed-by: Petr Tesarik <[email protected]>
> Signed-off-by: Aneesh Kumar K.V (Arm) <[email protected]>
> ---
> drivers/iommu/dma-iommu.c | 13 ++++++++-----
> 1 file changed, 8 insertions(+), 5 deletions(-)
Reviewed-by: Jason Gunthorpe <[email protected]>
Jason
