This code allocates memory from the heap:
```
static void *UE_phy_stub_standalone_pnf_task(void *arg)
{
...
UL_INFO->crc_ind.crc_indication_body.crc_pdu_list =
calloc(NB_UE_INST, sizeof(nfapi_crc_indication_pdu_t));
```
I see NB_UE_INST==1.
Then this code:
```
void fill_crc_indication_UE_MAC(int Mod_id,
int frame,
int subframe,
UL_IND_t *UL_INFO,
uint8_t crc_flag,
int index,
uint16_t rnti,
nfapi_ul_config_request_t
*ul_config_req) {
...
nfapi_crc_indication_pdu_t *pdu =
&UL_INFO->crc_ind.crc_indication_body
.crc_pdu_list[UL_INFO->crc_ind.crc_indication_body.number_of_crcs];
```
used .number_of_crcs to index into .crc_pdu_list without first
checking if .number_of_crcs is in range.
When run with multiple UEs, sometimes .number_of_crcs==1 and then
-fsanitize=address complains.
Change is to use NUMBER_OF_UE_MAX instead of NB_UE_INST.
With this change, -fsanitize=address stopping complaining.
Removing references to memcpy_dl_config_req and
memcpy_tx_req because these functions are leaking
memory. For our standalone mode we have created
new/modified memcpy_dl/tx_req functions.
Every if statement that includes a check for
the NFAPI_MODE that did not check for the new
PNF_STANDALONE_MODE now has been updated. Also
changed the tx_req and dl_config_req logs
when they are received at the OAI UE to be
info logs instead of error logs.
RLC has timers. We need to keep track of time. We chose to not use
realtime but 'processing time'. That is we send a tick to RLC for every
subframe when it is processed by the softmodem. Before this commit we
used to increase time in the function mac_rlc_status_ind which may not be
called every subframe (especially in TDD mode). So we need another way
to keep track of time.
We introduce rlc_tick() and call it in eNB_dlsch_ulsch_scheduler, which
is called every subframe, both in FDD and TDD.
We also call rlc_tick() in the function ru_thread_synch() because
pdcp_run() and rrc_rx_tx() are called there too.
It may not be the best solution. To be revised if needed.
Note: the UE has not been touched. Some modification is needed for the UE
too, most probably.
Additionally, combined many of the individual
dl_config_req and tx_req handle functions.
Also removed some unused functions we added.
Futhermore, removed our additions to the
dl_config_req and tx_req memcpy functions.
1.) Shutdown fix which allows us to see who requested to abort the simulation
2.) Properly initializing the NAS layer which previously was not happening for our simulation mode 5
3.) Changes in configurations to support the EPC(Have Melissa Verify these)
This completely removes the UESIM_EXPANSION define: it does not compile
at the moment. Its function was to multiplex multiple UEs on the same
TUN interface. However, this functionality is not needed since it is
possible to allocate many TUN devices (i.e., >= 32).
Michael Cook