On 08/20/2015 12:08 PM, Hans-Werner Hilse wrote: > Hi, > > Am 2015-08-18 18:35, schrieb Bjoern Franke: > >> Thanks for the hint, it did not work on the debian machines, but I got >> the systems running with crashkernel enabled. Now we got the first >> crash: >> https://p.rrbone.net/paste/nnNHrIJI#oHfBMOs2 > > We've seen these on our Goettingen Freifunk gateways, too. There, too, > batadv_frag_purge_orig was the smoking gun. However, I didn't report it, > because: > > - first and foremost, we were using the outdated legacy 2013.4 version > - it was most probably an issue with RCU lists > - and either disabling SMP or using a much more current kernel fixed it. > > So I blamed a buggy RCU implementation in older kernels, plus maybe some > ill behaviour in the old batman-adv codebase. The crashing kernel was > the old debian-wheezy one - pretty old, I'd say. > > -hwh
This is an independent bug (2013.4 uses a completely different fragmentation implementation) that has been reported in https://github.com/freifunk-gluon/batman-adv-legacy/issues/1 . Please don't bother the upstream BATMAN developers with batman-adv-legacy bugs. Matthias
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