Bug 2172 – Out-of-bounds array access

Bug 2172 - Out-of-bounds array access


Summary:	Out-of-bounds array access

Status:	RESOLVED WONTFIX

Product:	ns-3
Classification:	Unclassified
Component:	lte
Version:	ns-3-dev
Hardware:	PC Linux

Importance:	P5 critical
Assigned To:	Biljana Bojović

URL:
Keywords:

Depends on:
Blocks:
	Show dependency tree / graph

Reported:	2015-08-26 09:05 UTC by ycqzvomd
Modified:	2018-03-07 05:21 UTC (History)
CC List:	4 users (show)

See Also:

Attachments
Patch to modify NS_ASSERT conditions (514 bytes, patch) 2015-08-26 09:05 UTC, ycqzvomd	Details \| Diff
Add an attachment (proposed patch, testcase, etc.)

Note You need to log in before you can comment on or make changes to this bug.

Description ycqzvomd 2015-08-26 09:05:45 UTC

Created attachment 2128 [details]
Patch to modify NS_ASSERT conditions

GetTbSizeFromMcs is called with nprb = 0 in some tests, which results in out-of-bounds array access.

Attached patch modifies assert to prevent such bugs and makes them easy to detect. This bug was detected with AddressSanitizer, I don't know why it happens or how to fix it.

After applying the patch, two tests CRASH:
    lte-fdtbfq-ff-mac-scheduler
    lte-frequency-reuse

I have not found any other bugs using AddressSanitizer.

Comment 1 natale.patriciello 2018-03-07 05:21:28 UTC

The patch is not doing anything useful, I am sorry. If you think this needs a reopen, please do it and explain what is the sense to merge a patch that, from 0 crashes, open the doors to 2 crashes.