Kernel Bug Tracker – Bug 13838
kernel BUG at include/net/netns/generic.h:41!
Last modified: 2009-08-09 23:01:08 UTC
Subject : kernel BUG at include/net/netns/generic.h:41!
Submitter : Luca Tettamanti <firstname.lastname@example.org>
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<email@example.com> wrote:
> >> On Mon, Jul 27, 2009 at 4:28 AM, Rafael J. Wysocki<firstname.lastname@example.org> 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 <email@example.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 <firstname.lastname@example.org>
Patch : http://patchwork.kernel.org/patch/37779/
Fixed by commit 144586301f6af5ae5943a002f030d8c626fa4fdd .