[alsa-devel] [PATCH 2/3 v3] alsa-lib: fixed coverity reported issues under "RESOURCE_LEAK" checker.
sudarshan.bisht at nokia.com
sudarshan.bisht at nokia.com
Mon Apr 4 10:53:58 CEST 2011
From: Sudarshan Bisht <sudarshan.bisht at nokia.com>
Coverity Static Analysis helps developers find hard-to-spot,
yet potentially crash-causing defects early in the development phase,
reducing the cost,time, and risk of software errors.
This patch has got fixes for many potential memory leaks.
---
modules/mixer/simple/sbase.c | 1 +
modules/mixer/simple/sbasedl.c | 2 +-
src/conf.c | 4 ++++
src/control/control_hw.c | 4 +++-
src/pcm/pcm_file.c | 4 +++-
src/pcm/pcm_ladspa.c | 20 ++++++++++++++------
src/pcm/pcm_plug.c | 9 +++++++--
src/pcm/pcm_rate.c | 4 ++++
src/rawmidi/rawmidi.c | 4 +++-
9 files changed, 40 insertions(+), 12 deletions(-)
diff --git a/modules/mixer/simple/sbase.c b/modules/mixer/simple/sbase.c
index 97feee8..bb2f59d 100644
--- a/modules/mixer/simple/sbase.c
+++ b/modules/mixer/simple/sbase.c
@@ -377,6 +377,7 @@ static int simple_event_add1(snd_mixer_class_t *class,
if (ctype != SND_CTL_ELEM_TYPE_BOOLEAN) {
__invalid_type:
snd_mixer_selem_id_free(id);
+ free(hsimple);
return -EINVAL;
}
break;
diff --git a/modules/mixer/simple/sbasedl.c b/modules/mixer/simple/sbasedl.c
index 0137586..494802f 100644
--- a/modules/mixer/simple/sbasedl.c
+++ b/modules/mixer/simple/sbasedl.c
@@ -99,7 +99,7 @@ int mixer_simple_basic_dlopen(snd_mixer_class_t *class,
__error:
if (initflag)
free(priv);
- if (h == NULL)
+ if (h)
snd_dlclose(h);
free(xlib);
return -ENXIO;
diff --git a/src/conf.c b/src/conf.c
index 8939d62..c4daae7 100644
--- a/src/conf.c
+++ b/src/conf.c
@@ -638,6 +638,7 @@ static int get_char_skip_comments(input_t *input)
fd = malloc(sizeof(*fd));
if (!fd) {
free(str);
+ snd_input_close(in);
return -ENOMEM;
}
fd->name = str;
@@ -1847,6 +1848,7 @@ int snd_config_delete(snd_config_t *config)
list_del(&config->list);
free(config->id);
free(config);
+ config = NULL;
return 0;
}
@@ -4589,6 +4591,8 @@ static int parse_args(snd_config_t *subs, const char *str, snd_config_t *defs)
if (err < 0) {
_err:
free(val);
+ if (sub)
+ snd_config_delete(sub);
return err;
}
free(val);
diff --git a/src/control/control_hw.c b/src/control/control_hw.c
index cf258b4..29cbbc6 100644
--- a/src/control/control_hw.c
+++ b/src/control/control_hw.c
@@ -230,8 +230,10 @@ static int snd_ctl_hw_elem_tlv(snd_ctl_t *handle, int op_flag,
return -errno;
}
if (op_flag == 0) {
- if (xtlv->tlv[1] + 2 * sizeof(unsigned int) > tlv_size)
+ if (xtlv->tlv[1] + 2 * sizeof(unsigned int) > tlv_size) {
+ free(xtlv);
return -EFAULT;
+ }
memcpy(tlv, xtlv->tlv, xtlv->tlv[1] + 2 * sizeof(unsigned int));
}
free(xtlv);
diff --git a/src/pcm/pcm_file.c b/src/pcm/pcm_file.c
index bfa1cc8..adba7c0 100644
--- a/src/pcm/pcm_file.c
+++ b/src/pcm/pcm_file.c
@@ -226,7 +226,9 @@ static int snd_pcm_file_open_output_file(snd_pcm_file_t *file)
file->final_fname);
return -errno;
}
- fd = fileno(pipe);
+ fd = dup(fileno(pipe));
+ if (fd >= 0)
+ fclose(pipe);
} else {
if (file->trunc)
fd = open(file->final_fname, O_WRONLY|O_CREAT|O_TRUNC,
diff --git a/src/pcm/pcm_ladspa.c b/src/pcm/pcm_ladspa.c
index c413c10..41e1d38 100644
--- a/src/pcm/pcm_ladspa.c
+++ b/src/pcm/pcm_ladspa.c
@@ -750,8 +750,10 @@ static int snd_pcm_ladspa_allocate_memory(snd_pcm_t *pcm, snd_pcm_ladspa_t *lads
if (instance->input.data == NULL ||
instance->input.m_data == NULL ||
instance->output.data == NULL ||
- instance->output.m_data == NULL)
+ instance->output.m_data == NULL) {
+ free(pchannels);
return -ENOMEM;
+ }
for (idx = 0; idx < instance->input.channels.size; idx++) {
chn = instance->output.channels.array[idx];
if (pchannels[chn] == NULL && chn < ichannels) {
@@ -761,8 +763,10 @@ static int snd_pcm_ladspa_allocate_memory(snd_pcm_t *pcm, snd_pcm_ladspa_t *lads
instance->input.data[idx] = pchannels[chn];
if (instance->input.data[idx] == NULL) {
instance->input.data[idx] = snd_pcm_ladspa_allocate_zero(ladspa, 0);
- if (instance->input.data[idx] == NULL)
- return -ENOMEM;
+ if (instance->input.data[idx] == NULL) {
+ free(pchannels);
+ return -ENOMEM;
+ }
}
}
for (idx = 0; idx < instance->output.channels.size; idx++) {
@@ -770,8 +774,10 @@ static int snd_pcm_ladspa_allocate_memory(snd_pcm_t *pcm, snd_pcm_ladspa_t *lads
/* FIXME/OPTIMIZE: check if we can remove double alloc */
/* if LADSPA plugin has no broken inplace */
instance->output.data[idx] = malloc(sizeof(LADSPA_Data) * ladspa->allocated);
- if (instance->output.data[idx] == NULL)
- return -ENOMEM;
+ if (instance->output.data[idx] == NULL) {
+ free(pchannels);
+ return -ENOMEM;
+ }
pchannels[chn] = instance->output.m_data[idx] = instance->output.data[idx];
}
}
@@ -793,8 +799,10 @@ static int snd_pcm_ladspa_allocate_memory(snd_pcm_t *pcm, snd_pcm_ladspa_t *lads
instance->output.data[idx] = NULL;
} else {
instance->output.data[idx] = snd_pcm_ladspa_allocate_zero(ladspa, 1);
- if (instance->output.data[idx] == NULL)
+ if (instance->output.data[idx] == NULL) {
+ free(pchannels);
return -ENOMEM;
+ }
}
}
}
diff --git a/src/pcm/pcm_plug.c b/src/pcm/pcm_plug.c
index e9d2923..e80bd3e 100644
--- a/src/pcm/pcm_plug.c
+++ b/src/pcm/pcm_plug.c
@@ -1298,6 +1298,7 @@ int _snd_pcm_plug_open(snd_pcm_t **pcmp, const char *name,
err = snd_pcm_route_load_ttable(tt, ttable, csize, ssize, &cused, &sused, -1);
if (err < 0) {
snd_config_delete(sconf);
+ free(ttable);
return err;
}
}
@@ -1310,12 +1311,16 @@ int _snd_pcm_plug_open(snd_pcm_t **pcmp, const char *name,
err = snd_pcm_open_slave(&spcm, root, sconf, stream, mode, conf);
snd_config_delete(sconf);
- if (err < 0)
+ if (err < 0) {
+ free(ttable);
return err;
+ }
err = snd_pcm_plug_open(pcmp, name, sformat, schannels, srate, rate_converter,
route_policy, ttable, ssize, cused, sused, spcm, 1);
- if (err < 0)
+ if (err < 0) {
+ free(ttable);
snd_pcm_close(spcm);
+ }
return err;
}
#ifndef DOC_HIDDEN
diff --git a/src/pcm/pcm_rate.c b/src/pcm/pcm_rate.c
index 70e30e5..cf218ae 100644
--- a/src/pcm/pcm_rate.c
+++ b/src/pcm/pcm_rate.c
@@ -1392,11 +1392,13 @@ int snd_pcm_rate_open(snd_pcm_t **pcmp, const char *name,
} else {
SNDERR("Invalid type for rate converter");
snd_pcm_close(pcm);
+ free(rate);
return -EINVAL;
}
if (err < 0) {
SNDERR("Cannot find rate converter");
snd_pcm_close(pcm);
+ free(rate);
return -ENOENT;
}
#else
@@ -1405,6 +1407,7 @@ int snd_pcm_rate_open(snd_pcm_t **pcmp, const char *name,
err = open_func(SND_PCM_RATE_PLUGIN_VERSION, &rate->obj, &rate->ops);
if (err < 0) {
snd_pcm_close(pcm);
+ free(rate);
return err;
}
#endif
@@ -1413,6 +1416,7 @@ int snd_pcm_rate_open(snd_pcm_t **pcmp, const char *name,
! rate->ops.input_frames || ! rate->ops.output_frames) {
SNDERR("Inproper rate plugin %s initialization", type);
snd_pcm_close(pcm);
+ free(rate);
return err;
}
diff --git a/src/rawmidi/rawmidi.c b/src/rawmidi/rawmidi.c
index b28488a..25732d2 100644
--- a/src/rawmidi/rawmidi.c
+++ b/src/rawmidi/rawmidi.c
@@ -255,8 +255,10 @@ static int snd_rawmidi_open_conf(snd_rawmidi_t **inputp, snd_rawmidi_t **outputp
snd_config_delete(type_conf);
if (err >= 0)
err = open_func(inputp, outputp, name, rawmidi_root, rawmidi_conf, mode);
- if (err < 0)
+ if (err < 0) {
+ snd_dlclose(h);
return err;
+ }
if (inputp) {
(*inputp)->dl_handle = h; h = NULL;
snd_rawmidi_params_default(*inputp, ¶ms);
--
1.7.0.4
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