forge/linux-uconsole
1
0
Fork 0
Code Issues 1 Pull requests Projects Releases Packages Wiki Activity Actions

drm/etnaviv: add missing MMU context put when reaping MMU mapping

Browse source 
commit f2faea8b64 upstream.

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@vger.kernel.org # 5.4
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Tested-by: Michael Walle <michael@walle.cc>
Tested-by: Marek Vasut <marex@denx.de>
Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Lucas Stach 2021-08-20 22:18:30 +02:00 • committed by Greg Kroah-Hartman
commit cc9d96c9f9
1 changed files with 1 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

1
drivers/gpu/drm/etnaviv/etnaviv_mmu.c
View file

@ -197,6 +197,7 @@ 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);