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fix multi-connection crash (smp-08003)

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This commit is contained in:
zwj
2020-12-18 12:00:17 +08:00
parent e81104f377
commit 273d2fd5ec
3 changed files with 46 additions and 16 deletions
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43
components/bt/host/bluedroid/stack/l2cap/l2c_utils.c
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@@ -1450,14 +1450,17 @@ tL2C_CCB *l2cu_allocate_ccb (tL2C_LCB *p_lcb, UINT16 cid)
tL2C_CCB *p_ccb = NULL;
L2CAP_TRACE_DEBUG ("l2cu_allocate_ccb: cid 0x%04x", cid);
p_ccb = l2cu_find_free_ccb ();
if(p_ccb == NULL) {
if (list_length(l2cb.p_ccb_pool) < MAX_L2CAP_CHANNELS) {
p_ccb = (tL2C_CCB *)osi_malloc(sizeof(tL2C_CCB));
if (list_length(l2cb.p_ccb_pool) < MAX_L2CAP_CHANNELS) {
p_ccb = (tL2C_CCB *)osi_malloc(sizeof(tL2C_CCB));
if (p_ccb) {
memset (p_ccb, 0, sizeof(tL2C_CCB));
list_append(l2cb.p_ccb_pool, p_ccb);
}
}
if (p_ccb) {
memset (p_ccb, 0, sizeof(tL2C_CCB));
list_append(l2cb.p_ccb_pool, p_ccb);
}
}
}
if (p_ccb == NULL) {
return (NULL);
}
@@ -1686,14 +1689,7 @@ void l2cu_release_ccb (tL2C_CCB *p_ccb)
/* Flag as not in use */
p_ccb->in_use = FALSE;
{
if (list_remove(l2cb.p_ccb_pool, p_ccb)) {
p_ccb = NULL;
}
else {
L2CAP_TRACE_ERROR("Error in removing L2CAP Channel Control Block");
}
}
/* If no channels on the connection, start idle timeout */
if ((p_lcb) && p_lcb->in_use && (p_lcb->link_state == LST_CONNECTED)) {
if (!p_lcb->ccb_queue.p_first_ccb) {
@@ -3268,6 +3264,23 @@ tL2C_CCB *l2cu_find_ccb_by_cid (tL2C_LCB *p_lcb, UINT16 local_cid)
return (p_ccb);
}
tL2C_CCB *l2cu_find_free_ccb (void)
{
tL2C_CCB *p_ccb = NULL;
list_node_t *p_node = NULL;
for (p_node = list_begin(l2cb.p_ccb_pool); p_node; p_node = list_next(p_node))
{
p_ccb = list_node(p_node);
if(p_ccb && !p_ccb->in_use ) {
return p_ccb;
}
}
return (NULL);
}
#if (L2CAP_ROUND_ROBIN_CHANNEL_SERVICE == TRUE && CLASSIC_BT_INCLUDED == TRUE)
/******************************************************************************