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https://github.com/Divested-Mobile/DivestOS-Build.git
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87 lines
2.8 KiB
Diff
87 lines
2.8 KiB
Diff
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From e909d159ad1998ada853ed35be27c7b6ba241bdb Mon Sep 17 00:00:00 2001
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From: Walter Yang <yandongy@codeaurora.org>
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Date: Wed, 27 Jul 2016 15:07:53 +0800
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Subject: ASoC: msm: set pointers to NULL after kfree
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In lsm-related driver files, some pointers are not set as NULL
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after the memory is freed, which will leave many dangling pointers.
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Set them to NULL explicitly to avoid potential risk.
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CRs-Fixed: 880388
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Change-Id: I44925240705608510266a51225cc02611637c571
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Signed-off-by: Walter Yang <yandongy@codeaurora.org>
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---
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sound/soc/msm/msm-cpe-lsm.c | 7 +++++++
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sound/soc/msm/qdsp6v2/msm-dai-slim.c | 2 ++
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sound/soc/msm/qdsp6v2/q6lsm.c | 1 +
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3 files changed, 10 insertions(+)
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diff --git a/sound/soc/msm/msm-cpe-lsm.c b/sound/soc/msm/msm-cpe-lsm.c
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index 9f957e5..a529fcc 100644
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--- a/sound/soc/msm/msm-cpe-lsm.c
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+++ b/sound/soc/msm/msm-cpe-lsm.c
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@@ -1219,6 +1219,7 @@ static int msm_cpe_lsm_ioctl_shared(struct snd_pcm_substream *substream,
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dev_err(rtd->dev, "%s: No memory for sound model\n",
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__func__);
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kfree(session->conf_levels);
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+ session->conf_levels = NULL;
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return -ENOMEM;
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}
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session->snd_model_size = snd_model.data_size;
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@@ -1230,6 +1231,8 @@ static int msm_cpe_lsm_ioctl_shared(struct snd_pcm_substream *substream,
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__func__);
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kfree(session->conf_levels);
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kfree(session->snd_model_data);
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+ session->conf_levels = NULL;
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+ session->snd_model_data = NULL;
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return -EFAULT;
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}
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@@ -1241,6 +1244,8 @@ static int msm_cpe_lsm_ioctl_shared(struct snd_pcm_substream *substream,
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__func__, rc);
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kfree(session->snd_model_data);
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kfree(session->conf_levels);
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+ session->snd_model_data = NULL;
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+ session->conf_levels = NULL;
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return rc;
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}
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@@ -1254,6 +1259,8 @@ static int msm_cpe_lsm_ioctl_shared(struct snd_pcm_substream *substream,
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lsm_ops->lsm_shmem_dealloc(cpe->core_handle, session);
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kfree(session->snd_model_data);
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kfree(session->conf_levels);
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+ session->snd_model_data = NULL;
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+ session->conf_levels = NULL;
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return rc;
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}
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diff --git a/sound/soc/msm/qdsp6v2/msm-dai-slim.c b/sound/soc/msm/qdsp6v2/msm-dai-slim.c
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index b46d0a5..4bb8f59 100644
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--- a/sound/soc/msm/qdsp6v2/msm-dai-slim.c
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+++ b/sound/soc/msm/qdsp6v2/msm-dai-slim.c
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@@ -482,7 +482,9 @@ static void msm_dai_slim_remove_dai_data(
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dai_data_t = &drv_data->slim_dai_data[i];
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kfree(dai_data_t->chan_h);
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+ dai_data_t->chan_h = NULL;
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kfree(dai_data_t->sh_ch);
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+ dai_data_t->sh_ch = NULL;
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}
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}
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diff --git a/sound/soc/msm/qdsp6v2/q6lsm.c b/sound/soc/msm/qdsp6v2/q6lsm.c
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index ec73472..2bf0c49 100644
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--- a/sound/soc/msm/qdsp6v2/q6lsm.c
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+++ b/sound/soc/msm/qdsp6v2/q6lsm.c
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@@ -348,6 +348,7 @@ void q6lsm_client_free(struct lsm_client *client)
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q6lsm_mmap_apr_dereg();
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mutex_destroy(&client->cmd_lock);
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kfree(client);
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+ client = NULL;
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}
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/*
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--
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cgit v1.1
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