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Field information of struct `qitem_lte_rrc`
See original GitHub issueI am reading the fuzz task for LTE RRC, and I have some questions about the queue item structure used in this fuzzer.
- What are the possible valid values for the field
pdu_type? - Does the field
asn_plfollows the following ASN1 format fromRRCConnectionReconfigurationpayload? source
RRCConnectionReconfiguration ::= SEQUENCE {
rrc-TransactionIdentifier RRC-TransactionIdentifier,
criticalExtensions CHOICE {
c1 CHOICE{
rrcConnectionReconfiguration-r8 RRCConnectionReconfiguration-r8-IEs,
spare7 NULL,
spare6 NULL, spare5 NULL, spare4 NULL,
spare3 NULL, spare2 NULL, spare1 NULL
},
criticalExtensionsFuture SEQUENCE {}
}
}
Can you provide an example queue item?
Issue Analytics
- State:
- Created 2 years ago
- Comments:5 (2 by maintainers)
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Unfortunately, it’s a bit more complex in this scenario. There are two important things to consider here
SYM_LTERRC_INT_MOB_CMD_HO_FROM_IRAT_MSG_IDin PatternDB.LTERRC_INT_MOB_CMD_HO_FROM_IRAT_MSG_ID- unfortunately, the payload for messages of this type behave differently from whatsend_rrcexpect.We never really injected
LTERRC_INT_MOB_CMD_HO_FROM_IRAT_MSG_IDfrom guestlink, but I did some experiment and the things below should work. This is following the message description as described in the source code for the fuzz task.Running above code from the console results, on my end, to the following output:
Note that it attempts ASN decoding, but fails, as the wrong PDU for your payload was set. (Looking at the look, pdu 0 seems to encode
RRCConnectionReestablishmentRejectmessages.) Hope this helps!//edit: Also, we would happily accept a PR which extends guest-link with a
send_rrc_radio(pdu, pl)function 😃How do you access the firmware DBG messages while running in Console mode? The documentation does not make this clear.