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handle realloc error better

Browse source 
Make sure we free the old pointer, clear it and set the array size to 0.
Use reallocarray where possible.
This commit is contained in:
Wim Taymans 2022-04-27 10:09:06 +02:00
parent 9e3b784b34
commit ba7d410c3c
10 changed files with 240 additions and 120 deletions
Download patch file Download diff file Expand all files Collapse all files

74
src/modules/module-client-node/client-node.c
View file

@ -76,6 +76,11 @@ struct mix {
struct buffer buffers[MAX_BUFFERS];
};
struct params {
uint32_t n_params;
struct spa_pod **params;
};
struct port {
struct pw_impl_port *port;
struct node *node;
@ -89,8 +94,7 @@ struct port {
struct spa_port_info info;
struct pw_properties *properties;
uint32_t n_params;
struct spa_pod **params;
struct params params;
unsigned int removed:1;
unsigned int destroyed:1;
@ -120,8 +124,7 @@ struct node {
struct port dummy;
uint32_t n_params;
struct spa_pod **params;
struct params params;
};
struct impl {
@ -177,6 +180,32 @@ struct impl {
#define pw_client_node_resource_port_set_mix_info(r,...) \
pw_client_node_resource(r,port_set_mix_info,1,__VA_ARGS__)
static int update_params(struct params *p, uint32_t n_params, const struct spa_pod **params)
{
uint32_t i;
for (i = 0; i < p->n_params; i++)
free(p->params[i]);
p->n_params = n_params;
if (p->n_params == 0) {
free(p->params);
p->params = NULL;
} else {
struct spa_pod **np;
np = reallocarray(p->params, p->n_params, sizeof(struct spa_pod *));
if (np == NULL) {
pw_log_error("%p: can't realloc: %m", p);
free(p->params);
p->params = NULL;
p->n_params = 0;
return -errno;
}
p->params = np;
}
for (i = 0; i < p->n_params; i++)
p->params[i] = params[i] ? spa_pod_copy(params[i]) : NULL;
return 0;
}
static int
do_port_use_buffers(struct impl *impl,
enum spa_direction direction,
@ -309,10 +338,10 @@ static int impl_node_enum_params(void *object, int seq,
struct spa_pod *param;
result.index = result.next++;
if (result.index >= this->n_params)
if (result.index >= this->params.n_params)
break;
param = this->params[result.index];
param = this->params.params[result.index];
if (param == NULL || !spa_pod_is_object_id(param, id))
continue;
@ -472,17 +501,9 @@ do_update_port(struct node *this,
const struct spa_pod **params,
const struct spa_port_info *info)
{
uint32_t i;
if (change_mask & PW_CLIENT_NODE_PORT_UPDATE_PARAMS) {
spa_log_debug(this->log, "%p: port %u update %d params", this, port->id, n_params);
for (i = 0; i < port->n_params; i++)
free(port->params[i]);
port->n_params = n_params;
port->params = realloc(port->params, port->n_params * sizeof(struct spa_pod *));
for (i = 0; i < port->n_params; i++) {
port->params[i] = params[i] ? spa_pod_copy(params[i]) : NULL;
}
update_params(&port->params, n_params, params);
}
if (change_mask & PW_CLIENT_NODE_PORT_UPDATE_INFO) {
@ -577,7 +598,7 @@ impl_node_port_enum_params(void *object, int seq,
spa_return_val_if_fail(port != NULL, -EINVAL);
pw_log_debug("%p: seq:%d port %d.%d id:%u start:%u num:%u n_params:%d",
this, seq, direction, port_id, id, start, num, port->n_params);
this, seq, direction, port_id, id, start, num, port->params.n_params);
result.id = id;
result.next = 0;
@ -586,10 +607,10 @@ impl_node_port_enum_params(void *object, int seq,
struct spa_pod *param;
result.index = result.next++;
if (result.index >= port->n_params)
if (result.index >= port->params.n_params)
break;
param = port->params[result.index];
param = port->params.params[result.index];
if (param == NULL || !spa_pod_is_object_id(param, id))
continue;
@ -951,16 +972,8 @@ client_node_update(void *data,
struct node *this = &impl->node;
if (change_mask & PW_CLIENT_NODE_UPDATE_PARAMS) {
uint32_t i;
pw_log_debug("%p: update %d params", this, n_params);
for (i = 0; i < this->n_params; i++)
free(this->params[i]);
this->n_params = n_params;
this->params = realloc(this->params, this->n_params * sizeof(struct spa_pod *));
for (i = 0; i < this->n_params; i++)
this->params[i] = params[i] ? spa_pod_copy(params[i]) : NULL;
update_params(&this->params, n_params, params);
}
if (change_mask & PW_CLIENT_NODE_UPDATE_INFO) {
spa_node_emit_info(&this->hooks, info);
@ -1186,12 +1199,7 @@ node_init(struct node *this,
static int node_clear(struct node *this)
{
uint32_t i;
for (i = 0; i < this->n_params; i++)
free(this->params[i]);
free(this->params);
update_params(&this->params, 0, NULL);
return 0;
}

18
src/modules/module-client-node/remote-node.c
View file

@ -317,9 +317,16 @@ static int add_node_update(struct node_data *data, uint32_t change_mask, uint32_
res = spa_node_enum_params_sync(node->node,
id, &idx, NULL, &param, &b.b);
if (res == 1) {
params = realloc(params, sizeof(struct spa_pod *) * (n_params + 1));
void *p;
p = reallocarray(params, n_params + 1, sizeof(struct spa_pod *));
if (p == NULL) {
res = -errno;
pw_log_error("realloc failed: %m");
} else {
params = p;
params[n_params++] = spa_pod_copy(param);
}
}
spa_pod_dynamic_builder_clean(&b);
if (res != 1)
break;
@ -376,9 +383,16 @@ static int add_port_update(struct node_data *data, struct pw_impl_port *port, ui
port->direction, port->port_id,
id, &idx, NULL, &param, &b.b);
if (res == 1) {
params = realloc(params, sizeof(struct spa_pod *) * (n_params + 1));
void *p;
p = reallocarray(params, n_params + 1, sizeof(struct spa_pod*));
if (p == NULL) {
res = -errno;
pw_log_error("realloc failed: %m");
} else {
params = p;
params[n_params++] = spa_pod_copy(param);
}
}
spa_pod_dynamic_builder_clean(&b);
if (res != 1)

30
src/modules/module-client-node/v0/client-node.c
View file

@ -471,8 +471,19 @@ do_update_port(struct node *this,
for (i = 0; i < port->n_params; i++)
free(port->params[i]);
port->n_params = n_params;
port->params = realloc(port->params, port->n_params * sizeof(struct spa_pod *));
if (port->n_params == 0) {
free(port->params);
port->params = NULL;
} else {
void *p;
p = reallocarray(port->params, port->n_params, sizeof(struct spa_pod *));
if (p == NULL) {
pw_log_error("%p: port %u can't realloc: %m", this, port_id);
free(port->params);
port->n_params = 0;
}
port->params = p;
}
for (i = 0; i < port->n_params; i++) {
port->params[i] = params[i] ?
pw_protocol_native0_pod_from_v2(this->resource->client, params[i]) : NULL;
@ -1033,8 +1044,19 @@ client_node0_update(void *data,
for (i = 0; i < this->n_params; i++)
free(this->params[i]);
this->n_params = n_params;
this->params = realloc(this->params, this->n_params * sizeof(struct spa_pod *));
if (this->n_params == 0) {
free(this->params);
this->params = NULL;
} else {
void *p;
p = reallocarray(this->params, this->n_params, sizeof(struct spa_pod *));
if (p == NULL) {
pw_log_error("%p: can't realloc: %m", this);
free(this->params);
this->n_params = 0;
}
this->params = p;
}
for (i = 0; i < this->n_params; i++)
this->params[i] = params[i] ? spa_pod_copy(params[i]) : NULL;
}

14
src/modules/module-protocol-native/connection.c
View file

@ -156,17 +156,23 @@ static void *connection_ensure_size(struct pw_protocol_native_connection *conn,
int res;
if (buf->buffer_size + size > buf->buffer_maxsize) {
buf->buffer_maxsize = SPA_ROUND_UP_N(buf->buffer_size + size, MAX_BUFFER_SIZE);
buf->buffer_data = realloc(buf->buffer_data, buf->buffer_maxsize);
if (buf->buffer_data == NULL) {
void *np;
size_t ns;
ns = SPA_ROUND_UP_N(buf->buffer_size + size, MAX_BUFFER_SIZE);
np = realloc(buf->buffer_data, ns);
if (np == NULL) {
res = -errno;
free(buf->buffer_data);
buf->buffer_maxsize = 0;
spa_hook_list_call(&conn->listener_list,
struct pw_protocol_native_connection_events,
error, 0, -res);
error, 0, res);
errno = -res;
return NULL;
}
buf->buffer_maxsize = ns;
buf->buffer_data = np;
pw_log_debug("connection %p: resize buffer to %zd %zd %zd",
conn, buf->buffer_size, size, buf->buffer_maxsize);
}

6
src/modules/module-protocol-pulse/message.c
View file

@ -395,8 +395,12 @@ static int ensure_size(struct message *m, uint32_t size)
alloc = SPA_ROUND_UP_N(SPA_MAX(m->allocated + size, 4096u), 4096u);
diff = alloc - m->allocated;
if ((data = realloc(m->data, alloc)) == NULL)
if ((data = realloc(m->data, alloc)) == NULL) {
free(m->data);
m->stat->allocated -= m->allocated;
m->allocated = 0;
return -errno;
}
m->stat->allocated += diff;
m->stat->accumulated += diff;
m->data = data;

37
src/modules/module-session-manager/client-endpoint/endpoint-stream.c
View file

@ -185,19 +185,26 @@ int endpoint_stream_update(struct endpoint_stream *this,
{
if (change_mask & PW_CLIENT_ENDPOINT_UPDATE_PARAMS) {
uint32_t i;
size_t size = n_params * sizeof(struct spa_pod *);
pw_log_debug(NAME" %p: update %d params", this, n_params);
for (i = 0; i < this->n_params; i++)
free(this->params[i]);
this->params = realloc(this->params, size);
if (size > 0 && !this->params) {
this->n_params = n_params;
if (this->n_params == 0) {
free(this->params);
this->params = NULL;
} else {
void *p;
p = reallocarray(this->params, n_params, sizeof(struct spa_pod*));
if (p == NULL) {
free(this->params);
this->params = NULL;
this->n_params = 0;
goto no_mem;
}
this->n_params = n_params;
this->params = p;
}
for (i = 0; i < this->n_params; i++) {
this->params[i] = params[i] ? spa_pod_copy(params[i]) : NULL;
endpoint_stream_notify_subscribed(this, i, i+1);
@ -214,16 +221,22 @@ int endpoint_stream_update(struct endpoint_stream *this,
pw_properties_update(this->props, info->props);
if (info->change_mask & PW_ENDPOINT_STREAM_CHANGE_MASK_PARAMS) {
size_t size = info->n_params * sizeof(struct spa_param_info);
this->info.params = realloc(this->info.params, size);
if (size > 0 && !this->info.params) {
this->info.n_params = info->n_params;
if (info->n_params == 0) {
free(this->info.params);
this->info.params = NULL;
} else {
void *p;
p = reallocarray(this->info.params, info->n_params, sizeof(struct spa_param_info));
if (p == NULL) {
free(this->info.params);
this->info.params = NULL;
this->info.n_params = 0;
goto no_mem;
}
this->info.n_params = info->n_params;
memcpy(this->info.params, info->params, size);
this->info.params = p;
memcpy(this->info.params, info->params, info->n_params * sizeof(struct spa_param_info));
}
}
if (!this->info.name)

37
src/modules/module-session-manager/client-endpoint/endpoint.c
View file

@ -202,19 +202,26 @@ int endpoint_update(struct endpoint *this,
{
if (change_mask & PW_CLIENT_ENDPOINT_UPDATE_PARAMS) {
uint32_t i;
size_t size = n_params * sizeof(struct spa_pod *);
pw_log_debug(NAME" %p: update %d params", this, n_params);
for (i = 0; i < this->n_params; i++)
free(this->params[i]);
this->params = realloc(this->params, size);
if (size > 0 && !this->params) {
this->n_params = n_params;
if (this->n_params == 0) {
free(this->params);
this->params = NULL;
} else {
void *p;
p = reallocarray(this->params, n_params, sizeof(struct spa_pod*));
if (p == NULL) {
free(this->params);
this->params = NULL;
this->n_params = 0;
goto no_mem;
}
this->n_params = n_params;
this->params = p;
}
for (i = 0; i < this->n_params; i++) {
this->params[i] = params[i] ? spa_pod_copy(params[i]) : NULL;
endpoint_notify_subscribed(this, i, i+1);
@ -232,16 +239,22 @@ int endpoint_update(struct endpoint *this,
pw_properties_update(this->props, info->props);
if (info->change_mask & PW_ENDPOINT_CHANGE_MASK_PARAMS) {
size_t size = info->n_params * sizeof(struct spa_param_info);
this->info.params = realloc(this->info.params, size);
if (size > 0 && !this->info.params) {
this->info.n_params = info->n_params;
if (info->n_params == 0) {
free(this->info.params);
this->info.params = NULL;
} else {
void *p;
p = reallocarray(this->info.params, info->n_params, sizeof(struct spa_param_info));
if (p == NULL) {
free(this->info.params);
this->info.params = NULL;
this->info.n_params = 0;
goto no_mem;
}
this->info.n_params = info->n_params;
memcpy(this->info.params, info->params, size);
this->info.params = p;
memcpy(this->info.params, info->params, info->n_params * sizeof(struct spa_param_info));
}
}
if (!this->info.name) {

37
src/modules/module-session-manager/client-session/endpoint-link.c
View file

@ -198,19 +198,26 @@ int endpoint_link_update(struct endpoint_link *this,
{
if (change_mask & PW_CLIENT_SESSION_UPDATE_PARAMS) {
uint32_t i;
size_t size = n_params * sizeof(struct spa_pod *);
pw_log_debug(NAME" %p: update %d params", this, n_params);
for (i = 0; i < this->n_params; i++)
free(this->params[i]);
this->params = realloc(this->params, size);
if (size > 0 && !this->params) {
this->n_params = n_params;
if (this->n_params == 0) {
free(this->params);
this->params = NULL;
} else {
void *p;
p = reallocarray(this->params, n_params, sizeof(struct spa_pod*));
if (p == NULL) {
free(this->params);
this->params = NULL;
this->n_params = 0;
goto no_mem;
}
this->n_params = n_params;
this->params = p;
}
for (i = 0; i < this->n_params; i++) {
this->params[i] = params[i] ? spa_pod_copy(params[i]) : NULL;
endpoint_link_notify_subscribed(this, i, i+1);
@ -228,16 +235,22 @@ int endpoint_link_update(struct endpoint_link *this,
pw_properties_update(this->props, info->props);
if (info->change_mask & PW_ENDPOINT_LINK_CHANGE_MASK_PARAMS) {
size_t size = info->n_params * sizeof(struct spa_param_info);
this->info.params = realloc(this->info.params, size);
if (size > 0 && !this->info.params) {
this->info.n_params = info->n_params;
if (info->n_params == 0) {
free(this->info.params);
this->info.params = NULL;
} else {
void *p;
p = reallocarray(this->info.params, info->n_params, sizeof(struct spa_param_info));
if (p == NULL) {
free(this->info.params);
this->info.params = NULL;
this->info.n_params = 0;
goto no_mem;
}
this->info.n_params = info->n_params;
memcpy(this->info.params, info->params, size);
this->info.params = p;
memcpy(this->info.params, info->params, info->n_params * sizeof(struct spa_param_info));
}
}
if (!this->info.output_endpoint_id) {

38
src/modules/module-session-manager/client-session/session.c
View file

@ -185,19 +185,26 @@ int session_update(struct session *this,
{
if (change_mask & PW_CLIENT_SESSION_UPDATE_PARAMS) {
uint32_t i;
size_t size = n_params * sizeof(struct spa_pod *);
pw_log_debug(NAME" %p: update %d params", this, n_params);
for (i = 0; i < this->n_params; i++)
free(this->params[i]);
this->params = realloc(this->params, size);
if (size > 0 && !this->params) {
this->n_params = n_params;
if (this->n_params == 0) {
free(this->params);
this->params = NULL;
} else {
void *p;
p = reallocarray(this->params, n_params, sizeof(struct spa_pod*));
if (p == NULL) {
free(this->params);
this->params = NULL;
this->n_params = 0;
goto no_mem;
}
this->n_params = n_params;
this->params = p;
}
for (i = 0; i < this->n_params; i++) {
this->params[i] = params[i] ? spa_pod_copy(params[i]) : NULL;
session_notify_subscribed(this, i, i+1);
@ -209,18 +216,23 @@ int session_update(struct session *this,
pw_properties_update(this->props, info->props);
if (info->change_mask & PW_SESSION_CHANGE_MASK_PARAMS) {
size_t size = info->n_params * sizeof(struct spa_param_info);
this->info.params = realloc(this->info.params, size);
if (size > 0 && !this->info.params) {
this->info.n_params = info->n_params;
if (info->n_params == 0) {
free(this->info.params);
this->info.params = NULL;
} else {
void *p;
p = reallocarray(this->info.params, info->n_params, sizeof(struct spa_param_info));
if (p == NULL) {
free(this->info.params);
this->info.params = NULL;
this->info.n_params = 0;
goto no_mem;
}
this->info.n_params = info->n_params;
memcpy(this->info.params, info->params, size);
this->info.params = p;
memcpy(this->info.params, info->params, info->n_params * sizeof(struct spa_param_info));
}
}
this->info.change_mask = info->change_mask;
pw_global_for_each_resource(this->global, emit_info, this);
this->info.change_mask = 0;

33
src/pipewire/introspect.c
View file

@ -211,10 +211,15 @@ struct pw_node_info *pw_node_info_merge(struct pw_node_info *info,
}
if (update->change_mask & PW_NODE_CHANGE_MASK_PARAMS) {
uint32_t i, user, n_params = update->n_params;
void *np;
info->params = realloc(info->params, n_params * sizeof(struct spa_param_info));
if (info->params == NULL)
n_params = 0;
np = reallocarray(info->params, n_params, sizeof(struct spa_param_info));
if (np == NULL) {
free(info->params);
info->params = NULL;
info->n_params = n_params = 0;
}
info->params = np;
for (i = 0; i < SPA_MIN(info->n_params, n_params); i++) {
user = reset ? 0 : info->params[i].user;
@ -276,10 +281,15 @@ struct pw_port_info *pw_port_info_merge(struct pw_port_info *info,
}
if (update->change_mask & PW_PORT_CHANGE_MASK_PARAMS) {
uint32_t i, user, n_params = update->n_params;
void *np;
info->params = realloc(info->params, n_params * sizeof(struct spa_param_info));
if (info->params == NULL)
n_params = 0;
np = reallocarray(info->params, n_params, sizeof(struct spa_param_info));
if (np == NULL) {
free(info->params);
info->params = NULL;
info->n_params = n_params = 0;
}
info->params = np;
for (i = 0; i < SPA_MIN(info->n_params, n_params); i++) {
user = reset ? 0 : info->params[i].user;
@ -431,10 +441,15 @@ struct pw_device_info *pw_device_info_merge(struct pw_device_info *info,
}
if (update->change_mask & PW_DEVICE_CHANGE_MASK_PARAMS) {
uint32_t i, user, n_params = update->n_params;
void *np;
info->params = realloc(info->params, n_params * sizeof(struct spa_param_info));
if (info->params == NULL)
n_params = 0;
np = reallocarray(info->params, n_params, sizeof(struct spa_param_info));
if (np == NULL) {
free(info->params);
info->params = NULL;
info->n_params = n_params = 0;
}
info->params = np;
for (i = 0; i < SPA_MIN(info->n_params, n_params); i++) {
user = reset ? 0 : info->params[i].user;