On Wed, Jan 09, 2019 at 01:23:29PM +0300, Dan Carpenter wrote:
> There is a typo so we accidentally allocate enough memory for a pointer
> when we wanted to allocate enough for a struct.
>
> Fixes: 0bd971676e68 ("powerpc/powernv/npu: Add compound IOMMU groups")
> Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
> ---
> arch/powerpc/platforms/powernv/npu-dma.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/arch/powerpc/platforms/powernv/npu-dma.c b/arch/powerpc/platforms/powernv/npu-dma.c
> index d7f742ed48ba..3f58c7dbd581 100644
> --- a/arch/powerpc/platforms/powernv/npu-dma.c
> +++ b/arch/powerpc/platforms/powernv/npu-dma.c
> @@ -564,7 +564,7 @@ struct iommu_table_group *pnv_try_setup_npu_table_group(struct pnv_ioda_pe *pe)
> }
> } else {
> /* Create a group for 1 GPU and attached NPUs for POWER8 */
> - pe->npucomp = kzalloc(sizeof(pe->npucomp), GFP_KERNEL);
> + pe->npucomp = kzalloc(sizeof(*pe->npucomp), GFP_KERNEL);
To avoid these in the future, I wonder if instead of sizeof(pe->npucomp), we insist on
sizeof structure
pe->npucomp = kzalloc(sizeof(struct npucomp), GFP_KERNEL);
Acked-by: Balbir Singh <bsingharora@xxxxxxxxx>
