Bug 417 – stack explosion when sending to loopback device

Bug 417 - stack explosion when sending to loopback device

Summary:

stack explosion when sending to loopback device

Status:	RESOLVED FIXED

Product:	ns-3
Component:	internet-stack
Version:	pre-release
Platform:	All All

Importance:	P1 normal
Assigned To:	Rajib Bhattacharjea

URL:
Keywords:

Depends on:
Blocks:
	Show dependency tree / graph

Reported:	2008-11-24 02:45 EDT by Mathieu Lacage
Modified:	2008-12-13 23:30 EDT (History)

Attachments
avoid infinite stack recursion. (2.18 KB, patch) 2008-11-24 02:46 EDT, Mathieu Lacage	Details \| Diff
Add an attachment (proposed patch, testcase, etc.)

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Description From Mathieu Lacage 2008-11-24 02:45:39 EDT

If you use the tcp or udp stacks, and attempt to send and receive packets from
the loopback device, you risk getting into a stack explosion. The attached
patch fixes this in a very minimally intrusive way.

(testcase exhibiting the bug and exercising the fix is in the ns-3-simu tree)

------- Comment #1 From Mathieu Lacage 2008-11-24 02:46:37 EDT -------

Created an attachment (id=313) [details]
avoid infinite stack recursion.

------- Comment #2 From Mathieu Lacage 2008-12-10 02:37:02 EDT -------

there is not much I can do here. I am waiting for an ACK from the relevant
maintainer, and that means raj. Reassigning to raj: if it's ok with you, please
apply.

------- Comment #3 From Rajib Bhattacharjea 2008-12-11 16:55:37 EDT -------

this causes regressions (it seems?)

more on the way.

------- Comment #4 From Rajib Bhattacharjea 2008-12-11 17:11:43 EDT -------

Given that this patch changes the order of execution of functions, it should
probably change time stamps for events as well (which it appears to do).  I
think it is good.

------- Comment #5 From Rajib Bhattacharjea 2008-12-13 23:30:16 EDT -------

Changeset
4022:142c13a3975f