[PATCH] Revert "i915: don't use a vma that didn't match the context VM"

[Joonas Lahtinen <joonas.lahtinen@linux.intel.com>]

This reverts commit 5401b9adebc9e5f68df58226f51493ef0e6ceb4d.

Commit is no-op as per discussion in the linked mail thread.
The debated UAF scenario has not been possible in mainline kernel
since 2021.

Link: https://lore.kernel.org/intel-gfx/CAHk-=whfUM8y3PoFfT21+guKWK-mJmAE=8uLzOT+7HGv5NtqSw@mail.gmail.com/
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Tvrtko Ursulin <tursulin@ursulin.net>
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
---
 drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c
index 05997e8bbb29..1f303d4eaa4d 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c
@@ -898,8 +898,6 @@ static struct i915_vma *eb_lookup_vma(struct i915_execbuffer *eb, u32 handle)
 		vma = radix_tree_lookup(&eb->gem_context->handles_vma, handle);
 		if (likely(vma))
 			vma = i915_vma_tryget(vma);
-		else
-			vma = NULL;
 		rcu_read_unlock();
 		if (likely(vma))
 			return vma;
-- 
2.54.0