From nobody Mon Jun 8 19:54:33 2026 Received: from cstnet.cn (smtp25.cstnet.cn [159.226.251.25]) (using TLSv1.2 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id DAB192147E6; Wed, 27 May 2026 04:09:15 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=159.226.251.25 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779854960; cv=none; b=XZy9raq1F6mMnKu8LgBs57jgsxcY7NOvGGJlcgK0RRoFXcJmEjNhTRVCbTZQTeXM/JRquqF5G0Oh8GnnEzgbFIYqQzJAGopyCQa/hzz2GtNPepPY7spWULMLTZFJjcFDuL55IJj9DGY3BVJA74eXsV4wn0uyUR7/t05V9NAQk+A= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779854960; c=relaxed/simple; bh=MmveixCHIgU3dca7xWs9/z59gzXbMWnhgc1wiE9a2j8=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=KcWOW4NQ8gDY49VJoE89711edDxei1qgiuUemoWOQBuOJF99zWoerF8w0jyY6wjnimYcifvtvqyrXSsWrv109EgPuTkAeg3YGxZjzB77FNS4H4rLOz6pfr12wMN1myPpVWa18Lc+Q38iIWztMcnWzf5mUdYhDi6edokIwO/DG2c= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=iscas.ac.cn; spf=pass smtp.mailfrom=iscas.ac.cn; arc=none smtp.client-ip=159.226.251.25 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=iscas.ac.cn Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=iscas.ac.cn Received: from dfae2b116770.home.arpa (unknown [36.110.52.3]) by APP-05 (Coremail) with SMTP id zQCowABHntFfbhZqLZmGEQ--.5022S2; Wed, 27 May 2026 12:09:03 +0800 (CST) From: Wentao Liang To: Jani Nikula , Joonas Lahtinen , Rodrigo Vivi , Tvrtko Ursulin , David Airlie , Simona Vetter Cc: Kees Cook , Wentao Liang , intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org Subject: [PATCH] drm: i915: selftests: fix oa_config refcount leak in test_stream() Date: Wed, 27 May 2026 04:08:35 +0000 Message-Id: <20260527040835.854065-1-vulab@iscas.ac.cn> X-Mailer: git-send-email 2.34.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-CM-TRANSID: zQCowABHntFfbhZqLZmGEQ--.5022S2 X-Coremail-Antispam: 1UD129KBjvJXoW7KFyUWry7Gr1DKw15Zw13urg_yoW8Gr4kpa 13Aa4YyrW5GF1ftayUGa4rKFy3Aas3GF48C3sFkwn3uw13AFy8tFsakFyfXF95ArZ3ZF17 tFZ2kFWSgr1UArJanT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUU9Y14x267AKxVW8JVW5JwAFc2x0x2IEx4CE42xK8VAvwI8IcIk0 rVWrJVCq3wAFIxvE14AKwVWUJVWUGwA2ocxC64kIII0Yj41l84x0c7CEw4AK67xGY2AK02 1l84ACjcxK6xIIjxv20xvE14v26r4j6ryUM28EF7xvwVC0I7IYx2IY6xkF7I0E14v26F4j 6r4UJwA2z4x0Y4vEx4A2jsIE14v26F4UJVW0owA2z4x0Y4vEx4A2jsIEc7CjxVAFwI0_Gc CE3s1le2I262IYc4CY6c8Ij28IcVAaY2xG8wAqx4xG64xvF2IEw4CE5I8CrVC2j2WlYx0E 2Ix0cI8IcVAFwI0_Jr0_Jr4lYx0Ex4A2jsIE14v26r1j6r4UMcvjeVCFs4IE7xkEbVWUJV W8JwACjcxG0xvY0x0EwIxGrwACjI8F5VA0II8E6IAqYI8I648v4I1lFIxGxcIEc7CjxVA2 Y2ka0xkIwI1lc7CjxVAaw2AFwI0_Jw0_GFyl42xK82IYc2Ij64vIr41l4I8I3I0E4IkC6x 0Yz7v_Jr0_Gr1lx2IqxVAqx4xG67AKxVWUJVWUGwC20s026x8GjcxK67AKxVWUGVWUWwC2 zVAF1VAY17CE14v26r1q6r43MIIYrxkI7VAKI48JMIIF0xvE2Ix0cI8IcVAFwI0_Jr0_JF 4lIxAIcVC0I7IYx2IY6xkF7I0E14v26r4j6F4UMIIF0xvE42xK8VAvwI8IcIk0rVWUJVWU CwCI42IY6I8E87Iv67AKxVWUJVW8JwCI42IY6I8E87Iv6xkF7I0E14v26r4j6r4UJbIYCT nIWIevJa73UjIFyTuYvjfUonmRUUUUU X-CM-SenderInfo: pyxotu46lvutnvoduhdfq/1tbiCREAA2oWPLmz8QAAsg Content-Type: text/plain; charset="utf-8" test_stream() calls i915_perf_get_oa_config() which takes a reference on the returned oa_config. On the error path where stream allocation fails, the function returns without calling i915_oa_config_put() on the oa_config, leaking the reference. Move the oa_config check after the props.engine check and add i915_oa_config_put(oa_config) on the error path to properly release the reference. Fixes: 9677a9f3b1ad ("drm/i915/perf: Move gt-specific data from i915->perf = to gt->perf") Cc: stable@vger.kernel.org Signed-off-by: Wentao Liang --- drivers/gpu/drm/i915/selftests/i915_perf.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/i915/selftests/i915_perf.c b/drivers/gpu/drm/i= 915/selftests/i915_perf.c index e9469e27f42a..a3e0afb0549e 100644 --- a/drivers/gpu/drm/i915/selftests/i915_perf.c +++ b/drivers/gpu/drm/i915/selftests/i915_perf.c @@ -104,14 +104,16 @@ test_stream(struct i915_perf *perf) struct i915_perf_stream *stream; struct intel_gt *gt; =20 - if (!props.engine) - return NULL; - gt =3D props.engine->gt; =20 if (!oa_config) return NULL; =20 + if (!props.engine) { + i915_oa_config_put(oa_config); + return NULL; + } + props.metrics_set =3D oa_config->id; =20 stream =3D kzalloc_obj(*stream); --=20 2.34.1