linux-kernel - [PATCH 1/1] drm/i915: Do not use kfree() to free kmem_cache

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Date:   Wed,  4 Apr 2018 15:37:54 +0800
From:   Xidong Wang <wangxidong_97@....com>
To:     Jani Nikula <jani.nikula@...ux.intel.com>,
        Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>,
        Rodrigo Vivi <rodrigo.vivi@...el.com>,
        David Airlie <airlied@...ux.ie>
Cc:     intel-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org, Xidong Wang <wangxidong_97@....com>
Subject: [PATCH 1/1] drm/i915: Do not use kfree() to free kmem_cache_alloc() return value

In eb_lookup_vmas(), the return value of kmem_cache_alloc() is freed
with kfree(). I think the expected paired function is kmem_cahce_free().

Signed-off-by: Xidong Wang <wangxidong_97@....com>
---
 drivers/gpu/drm/i915/i915_gem_execbuffer.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
index 8c170db..0414228 100644
--- a/drivers/gpu/drm/i915/i915_gem_execbuffer.c
+++ b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
@@ -728,7 +728,7 @@ static int eb_lookup_vmas(struct i915_execbuffer *eb)
 
 		err = radix_tree_insert(handles_vma, handle, vma);
 		if (unlikely(err)) {
-			kfree(lut);
+			kmem_cache_free(eb->i915->luts, lut);
 			goto err_obj;
 		}
 
-- 
2.7.4