This is a note to let you know that I've just added the patch titled
drm/nouveau/mem: guard against NULL pointer access in mem_del
to the 5.4-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-nouveau-mem-guard-against-null-pointer-access-in-mem_del.patch
and it can be found in the queue-5.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From d10285a25e29f13353bbf7760be8980048c1ef2f Mon Sep 17 00:00:00 2001
From: Karol Herbst <kherbst@xxxxxxxxxx>
Date: Wed, 7 Oct 2020 00:05:28 +0200
Subject: drm/nouveau/mem: guard against NULL pointer access in mem_del
From: Karol Herbst <kherbst@xxxxxxxxxx>
commit d10285a25e29f13353bbf7760be8980048c1ef2f upstream.
other drivers seems to do something similar
Signed-off-by: Karol Herbst <kherbst@xxxxxxxxxx>
Cc: dri-devel <dri-devel@xxxxxxxxxxxxxxxxxxxxx>
Cc: Dave Airlie <airlied@xxxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Dave Airlie <airlied@xxxxxxxxxx>
Link: https://patchwork.freedesktop.org/patch/msgid/20201006220528.13925-2-kherbst@xxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/nouveau/nouveau_mem.c | 2 ++
1 file changed, 2 insertions(+)
--- a/drivers/gpu/drm/nouveau/nouveau_mem.c
+++ b/drivers/gpu/drm/nouveau/nouveau_mem.c
@@ -176,6 +176,8 @@ void
nouveau_mem_del(struct ttm_mem_reg *reg)
{
struct nouveau_mem *mem = nouveau_mem(reg);
+ if (!mem)
+ return;
nouveau_mem_fini(mem);
kfree(reg->mm_node);
reg->mm_node = NULL;
Patches currently in stable-queue which might be from kherbst@xxxxxxxxxx are
queue-5.4/drm-nouveau-mem-guard-against-null-pointer-access-in-mem_del.patch
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