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31 lines
949 B
Diff
31 lines
949 B
Diff
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From 8c51f78f0fb8bd8a3bab02155eea8d1f5cdc1a9b Mon Sep 17 00:00:00 2001
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From: Maxime Ripard <maxime@cerno.tech>
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Date: Wed, 25 Jan 2023 12:38:37 +0100
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Subject: [PATCH] drm/vc4: hvs: Initialize the dlist allocation list
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entry
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The vc4_hvs_dlist_allocation structure has a list that we don't
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initialize when we allocate a new instance.
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This makes any call reading the list structure (such as list_empty) fail
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with a NULL pointer dereference.
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Let's make sure our list is always initialized.
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Signed-off-by: Maxime Ripard <maxime@cerno.tech>
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---
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drivers/gpu/drm/vc4/vc4_hvs.c | 2 ++
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1 file changed, 2 insertions(+)
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--- a/drivers/gpu/drm/vc4/vc4_hvs.c
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+++ b/drivers/gpu/drm/vc4/vc4_hvs.c
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@@ -452,6 +452,8 @@ vc4_hvs_alloc_dlist_entry(struct vc4_hvs
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if (!alloc)
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return ERR_PTR(-ENOMEM);
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+ INIT_LIST_HEAD(&alloc->node);
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+
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spin_lock_irqsave(&hvs->mm_lock, flags);
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ret = drm_mm_insert_node(&hvs->dlist_mm, &alloc->mm_node,
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dlist_count);
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