On 8/31/15, Jeffrey Merkey <jeffmer...@gmail.com> wrote: > I was able to reproduce it last night with 2.6.32 on Centos 6.3 so it > does not seem confined to just the 3.X tree. I think this is > something that's been lurking in the kernel for years and just has a > hard time showing up. Bugs that go away on their own come back on > their own. > > I got a trace of the traffic but need one of the os. I'll attempt to > get a trace of this again since I seem to be able to reproduce it by > routing NetFlix traffic through the router while I am streaming live > videos on Linux. > > I will setup the system to trap the bug and post the traces. > > Jeff > > > On 8/31/15, Cong Wang <xiyou.wangc...@gmail.com> wrote: >> (Cc'ing netdev) >> >> On Sat, Aug 29, 2015 at 3:50 PM, Jeffrey Merkey <jeffmer...@gmail.com> >> wrote: >>> When installing Centos 7 running kernel 3.1 (Centos 7 distro) the >>> system generates an igmp broadcast storm which locks up and knocks >>> down a Century Link DSL router. Powering the router off clears the >>> broadcast storm. >>> >>> The bug is kernel related and resembles very closely another bug seen >>> about 10 years ago with Caldera's distro's on 2.4. The bug occurs on >>> the ia32 beta build. The bug DOES NOT exist in the 64 bit x86_64 >>> versions. I will attempt to debug it further since I have my own >>> debugger and try to run it down and provide more info. >>> >> >> A reproducer and/or bisect would help a lot. >> >> Thanks. >> >
I got to the bottom of this, however, I am not convinced it's a bug in linux any more than configuring a bridge in a loop is a bug. I addressed it to the ISP since this is where the problem lies, even though Linux contributes routed traffic to the problem. Jeff -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
