This is a note to let you know that I've just added the patch titled
drm/panfrost: Put mapping instead of shmem obj on panfrost_mmu_map_fault_addr() error
to the 5.18-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-panfrost-put-mapping-instead-of-shmem-obj-on-panfrost_mmu_map_fault_addr-error.patch
and it can be found in the queue-5.18 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From fb6e0637ab7ebd8e61fe24f4d663c4bae99cfa62 Mon Sep 17 00:00:00 2001
From: Dmitry Osipenko <dmitry.osipenko@xxxxxxxxxxxxx>
Date: Thu, 30 Jun 2022 23:06:00 +0300
Subject: drm/panfrost: Put mapping instead of shmem obj on panfrost_mmu_map_fault_addr() error
From: Dmitry Osipenko <dmitry.osipenko@xxxxxxxxxxxxx>
commit fb6e0637ab7ebd8e61fe24f4d663c4bae99cfa62 upstream.
When panfrost_mmu_map_fault_addr() fails, the BO's mapping should be
unreferenced and not the shmem object which backs the mapping.
Cc: stable@xxxxxxxxxxxxxxx
Fixes: bdefca2d8dc0 ("drm/panfrost: Add the panfrost_gem_mapping concept")
Reviewed-by: Steven Price <steven.price@xxxxxxx>
Signed-off-by: Dmitry Osipenko <dmitry.osipenko@xxxxxxxxxxxxx>
Signed-off-by: Steven Price <steven.price@xxxxxxx>
Link: https://patchwork.freedesktop.org/patch/msgid/20220630200601.1884120-2-dmitry.osipenko@xxxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/panfrost/panfrost_mmu.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/gpu/drm/panfrost/panfrost_mmu.c
+++ b/drivers/gpu/drm/panfrost/panfrost_mmu.c
@@ -518,7 +518,7 @@ err_map:
err_pages:
drm_gem_shmem_put_pages(&bo->base);
err_bo:
- drm_gem_object_put(&bo->base.base);
+ panfrost_gem_mapping_put(bomapping);
return ret;
}
Patches currently in stable-queue which might be from dmitry.osipenko@xxxxxxxxxxxxx are
queue-5.18/drm-panfrost-fix-shrinker-list-corruption-by-madvise-ioctl.patch
queue-5.18/drm-panfrost-put-mapping-instead-of-shmem-obj-on-panfrost_mmu_map_fault_addr-error.patch
queue-5.18/arm-9213-1-print-message-about-disabled-spectre-workarounds-only-once.patch
