* [PATCH 4.19 06/49] drm/nouveau/mem: guard against NULL pointer access in mem_del
[not found] <20201012132629.469542486@linuxfoundation.org>
@ 2020-10-12 13:26 ` Greg Kroah-Hartman
0 siblings, 0 replies; only message in thread
From: Greg Kroah-Hartman @ 2020-10-12 13:26 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, dri-devel, Karol Herbst, stable, Dave Airlie
From: Karol Herbst <kherbst@redhat.com>
commit d10285a25e29f13353bbf7760be8980048c1ef2f upstream.
other drivers seems to do something similar
Signed-off-by: Karol Herbst <kherbst@redhat.com>
Cc: dri-devel <dri-devel@lists.freedesktop.org>
Cc: Dave Airlie <airlied@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201006220528.13925-2-kherbst@redhat.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
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;
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2020-10-12 13:26 ` [PATCH 4.19 06/49] drm/nouveau/mem: guard against NULL pointer access in mem_del Greg Kroah-Hartman
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