Patch "drm/i915/gvt: Fix the kernel null pointer error" has been added to the 4.12-stable tree

Patch "drm/i915/gvt: Fix the kernel null pointer error" has been added to the 4.12-stable tree

[gregkh]

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@vger.kernel.org> know about it.


>From ffeaf9aaf97b4bdaf114d6df52f800d71918768c Mon Sep 17 00:00:00 2001
From: fred gao <fred.gao@intel.com>
Date: Wed, 16 Aug 2017 15:48:03 +0800
Subject: drm/i915/gvt: Fix the kernel null pointer error

From: fred gao <fred.gao@intel.com>

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@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 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@intel.com are

queue-4.12/drm-i915-gvt-fix-the-kernel-null-pointer-error.patch