[PATCH] drm/i915: Fix memory leak in query_perf_config_list()

Thorsten Blum <[email protected]>
Newsgroups org.freedesktop.lists.dri-devel,org.freedesktop.lists.intel-gfx,org.kernel.vger.linux-kernel
Message-ID <[email protected]>
When krealloc() fails, free the original oa_config_ids before returning
to avoid a memory leak.

Fixes: 4f6ccc74a85c ("drm/i915: add support for perf configuration queries")
Cc: [email protected]
Signed-off-by: Thorsten Blum <[email protected]>
---
 drivers/gpu/drm/i915/i915_query.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/i915_query.c b/drivers/gpu/drm/i915/i915_query.c
index 0c55fb6e9727..11157fb14db3 100644
--- a/drivers/gpu/drm/i915/i915_query.c
+++ b/drivers/gpu/drm/i915/i915_query.c
@@ -403,8 +403,10 @@ static int query_perf_config_list(struct drm_i915_private *i915,
 		ids = krealloc(oa_config_ids,
 			       n_configs * sizeof(*oa_config_ids),
 			       GFP_KERNEL);
-		if (!ids)
+		if (!ids) {
+			kfree(oa_config_ids);
 			return -ENOMEM;
+		}
 
 		alloc = fetch_and_zero(&n_configs);
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