[FFmpeg-devel] [PATCH] libavfilter/dnn/dnn_backend_tf: Remove redundant av_freep() to avoid double free

[Guo, Yejun]

-----Original Message-----
From: ffmpeg-devel <ffmpeg-devel-bounces at ffmpeg.org> On Behalf Of Jiasheng Jiang
Sent: Thursday, August 7, 2025 10:50 PM
To: ffmpeg-devel at ffmpeg.org
Cc: Jiasheng Jiang <jiashengjiangcool at gmail.com>
Subject: [FFmpeg-devel] [PATCH] libavfilter/dnn/dnn_backend_tf: Remove redundant av_freep() to avoid double free

Remove redundant av_freep() to avoid double free since task will be freed in dnn_free_model_tf() after the success of ff_queue_push_back().

Fixes: af052f9066 ("lavfi/dnn: fix mem leak in TF backend error handle")
Signed-off-by: Jiasheng Jiang <jiashengjiangcool at gmail.com>
---
 libavfilter/dnn/dnn_backend_tf.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/libavfilter/dnn/dnn_backend_tf.c b/libavfilter/dnn/dnn_backend_tf.c
index 6ca7fb6910..2c33691f96 100644
--- a/libavfilter/dnn/dnn_backend_tf.c
+++ b/libavfilter/dnn/dnn_backend_tf.c
@@ -833,14 +833,12 @@ static int dnn_execute_model_tf(const DNNModel *model, DNNExecBaseParams *exec_p
 
     ret = extract_lltask_from_task(task, tf_model->lltask_queue);
     if (ret != 0) {
-        av_freep(&task);
         av_log(ctx, AV_LOG_ERROR, "unable to extract last level task from task.\n");
         return ret;
     }
 
     request = ff_safe_queue_pop_front(tf_model->request_queue);
     if (!request) {
-        av_freep(&task);
         av_log(ctx, AV_LOG_ERROR, "unable to get infer request.\n");
         return AVERROR(EINVAL);
     }

Thanks for the catch, will push soon.