On Tue, 2010-02-02 at 17:48 +0100, Patrick McHardy wrote: > Jon Masters wrote: > > On Tue, 2010-02-02 at 06:35 -0500, Jon Masters wrote: > > > >> I think there's something more fundamental going on here. > > > > What happens is the conntrack code attempts to free > > nf_conntrack_untracked back into the SL[U]B cache from which it > > allocates other ct's. > > That shouldn't happen, the untracked conntrack is initialized to a > refcount of 1, which is never released. Ah, but I think it is :) It's also re-initialized (with an atomic_set) every time a new namespace is created, whereas this should probably only be done in the init_init_net code, not in init_net :) > > There's just one problem...that's a static struct > > not from the cache. So, this is why we end up with the SLAB being > > corrupted and the address immediately following the > > nf_conntrack_untracked being corrupted. > > > > I shoved some debug comments into the destroy code to see if we were > > trying to free nf_conntrack_untracked, and bingo. I have shoved a panic > > in there now, will send you a backtrace. > > Thanks. No problem. And thanks for your help. I'm sorry if I sound frustrated at this, it's just causing all of my test machines running KVM guests to fall over :) Jon. -- To unsubscribe from this list: send the line "unsubscribe netfilter-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
