Bug 13838
| Summary: | kernel BUG at include/net/netns/generic.h:41! | ||
|---|---|---|---|
| Product: | Networking | Reporter: | Rafael J. Wysocki (rjw) |
| Component: | Other | Assignee: | Arnaldo Carvalho de Melo (acme) |
| Status: | CLOSED CODE_FIX | ||
| Severity: | normal | ||
| Priority: | P1 | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Kernel Version: | commit 78af08d | Subsystem: | |
| Regression: | Yes | Bisected commit-id: | |
| Bug Depends on: | |||
| Bug Blocks: | 13615 | ||
|
Description
Rafael J. Wysocki
2009-07-26 21:15:09 UTC
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 . |