Bug 417 - stack explosion when sending to loopback device
stack explosion when sending to loopback device
Product: ns-3
Classification: Unclassified
Component: internet
All All
: P1 normal
Assigned To: Rajib Bhattacharjea
Depends on:
Blocks: 2211
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Reported: 2008-11-24 02:45 EST by Mathieu Lacage
Modified: 2015-11-08 17:31 EST (History)
2 users (show)

See Also:

avoid infinite stack recursion. (2.18 KB, patch)
2008-11-24 02:46 EST, Mathieu Lacage
Details | Diff

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Description Mathieu Lacage 2008-11-24 02:45:39 EST
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 Mathieu Lacage 2008-11-24 02:46:37 EST
Created attachment 313 [details]
avoid infinite stack recursion.
Comment 2 Mathieu Lacage 2008-12-10 02:37:02 EST
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 Rajib Bhattacharjea 2008-12-11 16:55:37 EST
this causes regressions (it seems?)

more on the way.
Comment 4 Rajib Bhattacharjea 2008-12-11 17:11:43 EST
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 Rajib Bhattacharjea 2008-12-13 23:30:16 EST
Comment 6 Tommaso Pecorella 2015-11-08 17:31:35 EST
According to Massif's output, this bug is not anymore relevant thanks to the changes in LoopbackNetDevice.