Bug 3260

Summary: linux hang on gigabit networking
Product: Other Reporter: Sandro Petrini (sandro.petrini)
Component: OtherAssignee: other_other
Status: REJECTED INSUFFICIENT_DATA    
Severity: blocking CC: bunk
Priority: P2    
Hardware: i386   
OS: Linux   
Kernel Version: 2.4.22, 2.6.3-7mdk, 2.8.1, 2.8.1-mm1 Subsystem:
Regression: --- Bisected commit-id:

Description Sandro Petrini 2004-08-23 07:41:19 UTC 
Distribution:MDK 9.2, 10 or Custom
Hardware Environment:Motherboard (Gigabyte or ASUS) and nic (r8169 or sk98lin)
Software Environment:minimal for test
Problem Description:when two machine use massively the net (at 1G) to comunicate
with each other the sistem hang (freeze). 

Steps to reproduce: two pc with 1G nic (I suggest r8169 or sk98lin) connected
each other with gigabite cross cable (the quality doesn't matter).
Kernel also the last 2.6.8.1 (i tryed 2.6.8.1-mm1, 2.4.22, etc..).

For each one mount via samba a folder in the other. (The question is: can samba
,in user space level, freeze the system ? NO!?).

Start to trasfer form each a lot of data in a shared of the other one.

So ... randomly, expecially in  initial cold temperature, the system hangs. 

We make a lot of test and suppose that is a IRQ, APIC subsystem problem BUT not
are sure!

Is very serious bug, 
thank's in advance for help.

Sandro Petrini
Comment 1 Sandro Petrini 2004-08-24 02:16:35 UTC 
THE BIG PARTICULARITY OF THIS BUG is
that, when one of two PC hang, hang also the other !!!
Everytime!
Is very simple to reproduce.
Comment 2 Dominik Brodowski 2005-11-17 13:52:36 UTC 
Does it still occur with recent kernels, like 2.6.14?
Comment 3 Adrian Bunk 2006-04-16 17:39:50 UTC 
I'm assuming this issue is already fixed in recent 2.6 kernels.

Please reopen this bug if it's still present in kernel 2.6.16.5.