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drm/panfrost: Fix the panfrost_mmu_map_fault_addr() error path

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commit 764a2ab9eb upstream.

Make sure all bo->base.pages entries are either NULL or pointing to a
valid page before calling drm_gem_shmem_put_pages().

Reported-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Cc: <stable@vger.kernel.org>
Fixes: 187d292920 ("drm/panfrost: Add support for GPU heap allocations")
Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
Reviewed-by: Steven Price <steven.price@arm.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210521093811.1018992-1-boris.brezillon@collabora.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Boris Brezillon 2021-05-21 11:38:11 +02:00 • committed by Greg Kroah-Hartman
commit 8250f7f7ae
1 changed files with 1 additions and 0 deletions
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drivers/gpu/drm/panfrost/panfrost_mmu.c
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@ -458,6 +458,7 @@ static int panfrost_mmu_map_fault_addr(struct panfrost_device *pfdev, int as,
if (IS_ERR(pages[i])) {
mutex_unlock(&bo->base.pages_lock);
ret = PTR_ERR(pages[i]);
pages[i] = NULL;
goto err_pages;
}
}