Subject : kernel BUG at include/net/netns/generic.h:41! Submitter : Luca Tettamanti <kronos.it@gmail.com> Date : 2009-07-20 15:27 References : http://lkml.org/lkml/2009/7/20/105 This entry is being used for tracking a regression from 2.6.30. Please don't close it until the problem is fixed in the mainline.
On Tuesday 28 July 2009, Eric Dumazet wrote: > Luca Tettamanti a écrit : > > On Mon, Jul 27, 2009 at 7:29 AM, Américo Wang<xiyou.wangcong@gmail.com> > wrote: > >> On Mon, Jul 27, 2009 at 4:28 AM, Rafael J. Wysocki<rjw@sisk.pl> wrote: > >>> This message has been generated automatically as a part of a report > >>> of recent regressions. > >>> > >>> The following bug entry is on the current list of known regressions > >>> from 2.6.30. Please verify if it still should be listed and let me know > >>> (either way). > >>> > >>> > >>> Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=13838 > >>> Subject : kernel BUG at include/net/netns/generic.h:41! > >>> Submitter : Luca Tettamanti <kronos.it@gmail.com> > >>> Date : 2009-07-20 15:27 (7 days old) > >>> References : http://lkml.org/lkml/2009/7/20/105 > >> Hmm, it looks like that 'pfkey_net_id' is still zero after > ipsec_pfkey_init()... > >> > >> Add Herbert and net-dev into Cc. > >> > >> Luca, would you mind to provide your .config and the steps to reproduce > this? > > > > I cannot reproduce it anymore with the current git kernel. The BUG was > > triggered by racoon at startup. > > Should I go back to an older kernel to investigate or can we consider > > it "fixed"? > > > > This should be fixed by following patch (submitted for bug 13760, but should > apply) > > diff --git a/net/core/net_namespace.c b/net/core/net_namespace.c > index b7292a2..1972830 100644 > --- a/net/core/net_namespace.c > +++ b/net/core/net_namespace.c > @@ -488,7 +488,7 @@ int net_assign_generic(struct net *net, int id, void > *data) > */ > > ng->len = id; > - memcpy(&ng->ptr, &old_ng->ptr, old_ng->len); > + memcpy(&ng->ptr, &old_ng->ptr, old_ng->len * sizeof(void *)); > > rcu_assign_pointer(net->gen, ng); > call_rcu(&old_ng->rcu, net_generic_release);
Handled-By : Eric Dumazet <eric.dumazet@gmail.com> Patch : http://patchwork.kernel.org/patch/37779/
Fixed by commit 144586301f6af5ae5943a002f030d8c626fa4fdd .