[Coverity CID :219476] Dereference after null check in subsys/bluetooth/controller/ll_sw/ull_conn.c

[zephyrbot]

Static code scan issues found in file:

https://github.com/zephyrproject-rtos/zephyr/tree/bd97359a5338b2542d19011b6d6aa1d8d1b9cc3f/subsys/bluetooth/controller/ll_sw/ull_conn.c

Category: Null pointer dereferences
Function: length_req_rsp_recv
Component: Bluetooth
CID: 219476

Details:

https://github.com/zephyrproject-rtos/zephyr/blob/bd97359a5338b2542d19011b6d6aa1d8d1b9cc3f/subsys/bluetooth/controller/ll_sw/ull_conn.c

Please fix or provide comments in coverity using the link:

https://scan9.coverity.com/reports.htm#v32951/p12996.

Note: This issue was created automatically. Priority was set based on classification
of the file affected and the impact field in coverity. Assignees were set using the CODEOWNERS file.

[cvinayak]

False positive

if (pdu_rx->llctrl.opcode != PDU_DATA_LLCTRL_TYPE_LENGTH_RSP) then (pdu_rx->llctrl.opcode == PDU_DATA_LLCTRL_TYPE_LENGTH_REQ) hence tx is not NULL.

Updated coverity.