Messages in this thread | | | Date | Mon, 18 Oct 2010 22:37:40 +0200 | From | Patrick Ringl <> | Subject | Re: 2.6.36-rc7: net/bridge causes temporary network I/O lockups [2] |
| |
On 10/18/2010 06:16 PM, Herbert Xu wrote: > On Sat, Oct 16, 2010 at 08:15:31PM +0200, Patrick Ringl wrote: > >> Hi, >> >> okay I narrowed down the issue. I watched all function calls of the >> 'bridge' module with the help of a small systemtap probe of mine. I >> first traced a timespan where the issue did not occur, then one where it >> did and composed an intersection of these two: >> > I can't reproduce this problem here so I'll need your help to > track it down. > > Can you see if you can relate the lock-ups to specific events > such as a particular packet being sent through the bridge? > The problem is definitely somewhere in the 2.6.34 commit regarding IGMP snooping (when disabling it, everything works). I have attached a tcpdump log of data coming through the bridge and data coming through an attached port (eth1). The lockups are easily spotted, since I use mtr to constantly ping the problematic machine, and there aren't any incoming/outgoing packets during the lockup. > If we can recreate the problem on demand that that helps us to > find the root cause. > > You mentioned that you took packet dumps on the system. If you > can show us the packets through the bridge and its ports when > the problem occurs that would be great. > > Thanks, > Anything else I could possibly provide? :-)
regards, Patrick [unhandled content-type:application/octet-stream][unhandled content-type:application/octet-stream] | |