This is a note to let you know that I've just added the patch titled
drm/i915/gvt: Fix the kernel null pointer error
to the 4.12-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-i915-gvt-fix-the-kernel-null-pointer-error.patch
and it can be found in the queue-4.12 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From ffeaf9aaf97b4bdaf114d6df52f800d71918768c Mon Sep 17 00:00:00 2001
From: fred gao <fred.gao@xxxxxxxxx>
Date: Wed, 16 Aug 2017 15:48:03 +0800
Subject: drm/i915/gvt: Fix the kernel null pointer error
From: fred gao <fred.gao@xxxxxxxxx>
commit ffeaf9aaf97b4bdaf114d6df52f800d71918768c upstream.
once error happens in shadow_indirect_ctx function, the variable
wa_ctx->indirect_ctx.obj is not initialized but accessed, so the
kernel null point panic occurs.
Fixes: 894cf7d15634 ("drm/i915/gvt: i915_gem_object_create() returns an error pointer")
Signed-off-by: fred gao <fred.gao@xxxxxxxxx>
Signed-off-by: Zhenyu Wang <zhenyuw@xxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/gvt/cmd_parser.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/gpu/drm/i915/gvt/cmd_parser.c
+++ b/drivers/gpu/drm/i915/gvt/cmd_parser.c
@@ -2754,7 +2754,7 @@ static int shadow_indirect_ctx(struct in
unmap_src:
i915_gem_object_unpin_map(obj);
put_obj:
- i915_gem_object_put(wa_ctx->indirect_ctx.obj);
+ i915_gem_object_put(obj);
return ret;
}
Patches currently in stable-queue which might be from fred.gao@xxxxxxxxx are
queue-4.12/drm-i915-gvt-fix-the-kernel-null-pointer-error.patch