linux-kernel - [PATCH -next] drm/msm: dpu: Fix "WARNING: invalid free of devm

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Date:   Fri, 16 Nov 2018 19:25:26 +0800
From:   YueHaibing <yuehaibing@...wei.com>
To:     <robdclark@...il.com>, <airlied@...ux.ie>, <seanpaul@...omium.org>
CC:     <linux-kernel@...r.kernel.org>, <jsanka@...eaurora.org>,
        <jcrouse@...eaurora.org>, <linux-arm-msm@...r.kernel.org>,
        <dri-devel@...ts.freedesktop.org>,
        <freedreno@...ts.freedesktop.org>,
        YueHaibing <yuehaibing@...wei.com>
Subject: [PATCH -next] drm/msm: dpu: Fix "WARNING: invalid free of devm_ allocated data"

'dpu_enc' is a member of 'drm_enc'
And 'drm_enc' got allocated with devm_kzalloc in dpu_encoder_init.

This gives this error message:
./drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c:459:1-6:
 WARNING: invalid free of devm_ allocated data

Signed-off-by: YueHaibing <yuehaibing@...wei.com>
---
 drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
index 82c55ef..99526d9 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
@@ -455,8 +455,6 @@ static void dpu_encoder_destroy(struct drm_encoder *drm_enc)
 
 	drm_encoder_cleanup(drm_enc);
 	mutex_destroy(&dpu_enc->enc_lock);
-
-	kfree(dpu_enc);
 }
 
 void dpu_encoder_helper_split_config(
-- 
2.7.0