[PATCH 8/8] drm/etnaviv: add missing MMU context put when reaping MMU mapping

[Christian Gmeiner]

Am Fr., 20. Aug. 2021 um 22:18 Uhr schrieb Lucas Stach <l.stach at pengutronix.de>:
>
> When we forcefully evict a mapping from the the address space and thus the
> MMU context, the MMU context is leaked, as the mapping no longer points to
> it, so it doesn't get freed when the GEM object is destroyed. Add the
> mssing context put to fix the leak.
>
> Cc: stable at vger.kernel.org # 5.4
> Signed-off-by: Lucas Stach <l.stach at pengutronix.de>
> Tested-by: Michael Walle <michael at walle.cc>

Series is:
Reviewed-by: Christian Gmeiner <christian.gmeiner at gmail.com>

> ---
>  drivers/gpu/drm/etnaviv/etnaviv_mmu.c | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/drivers/gpu/drm/etnaviv/etnaviv_mmu.c b/drivers/gpu/drm/etnaviv/etnaviv_mmu.c
> index dab1b58006d8..9fb1a2aadbcb 100644
> --- a/drivers/gpu/drm/etnaviv/etnaviv_mmu.c
> +++ b/drivers/gpu/drm/etnaviv/etnaviv_mmu.c
> @@ -199,6 +199,7 @@ static int etnaviv_iommu_find_iova(struct etnaviv_iommu_context *context,
>                  */
>                 list_for_each_entry_safe(m, n, &list, scan_node) {
>                         etnaviv_iommu_remove_mapping(context, m);
> +                       etnaviv_iommu_context_put(m->context);
>                         m->context = NULL;
>                         list_del_init(&m->mmu_node);
>                         list_del_init(&m->scan_node);
> --
> 2.30.2
>


-- 
greets
--
Christian Gmeiner, MSc

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