Bluetooth: host: handle not getting a buffer

net_buf_alloc(K_FOREVER) can now fail (if run from the syswq). Propagate to
the caller instead of asserting.

Signed-off-by: Jonathan Rico <[email protected]>
(cherry picked from commit aa30d07)
Signed-off-by: Vinayak Kariappa Chettimada <[email protected]>

Author: jori-nordic

subsys/bluetooth/host/hci_core.c

@@ -255,8 +255,12 @@ struct net_buf *bt_hci_cmd_create(uint16_t opcode, uint8_t param_len)
 
 	LOG_DBG("opcode 0x%04x param_len %u", opcode, param_len);
 
+	/* net_buf_alloc(K_FOREVER) can fail when run from the syswq */
 	buf = net_buf_alloc(&hci_cmd_pool, K_FOREVER);
-	__ASSERT_NO_MSG(buf);
+	if (!buf) {
+		LOG_DBG("Unable to allocate a command buffer");
+		return NULL;
+	}
 
 	LOG_DBG("buf %p", buf);