Re: kern/55680: llentry_free panic

[Ryota Ozaki <ozaki-r%netbsd.org@localhost>]

On Wed, Sep 23, 2020 at 12:40 AM Kimmo Suominen <kim%netbsd.org@localhost> wrote:
>
> >Number:         55680
> >Category:       kern
> >Synopsis:       llentry_free panic
> >Confidential:   no
> >Severity:       non-critical
> >Priority:       medium
> >Responsible:    kern-bug-people
> >State:          open
> >Class:          sw-bug
> >Submitter-Id:   net
> >Arrival-Date:   Tue Sep 22 15:40:00 +0000 2020
> >Originator:     Kimmo Suominen
> >Release:        NetBSD 9.0_STABLE (202009201240Z)
> >Organization:
> >Environment:
> System: NetBSD chronologie.gw.fi 9.0_STABLE NetBSD 9.0_STABLE (GENERIC) #0: Sun Sep 20 10:17:44 UTC 2020 mkrepro%mkrepro.NetBSD.org@localhost:/usr/src/sys/arch/amd64/compile/GENERIC amd64
> Architecture: x86_64
> Machine: amd64
> >Description:
> I rebooted the currently selected default router (high pref) and the system paniced.
>
> panic: pr_item_bitmap_put: [llentrypl] 0xffff88bff9db2330 already freed
> cpu1: Begin traceback...
> vpanic() at netbsd:vpanic+0x160
> snprintf() at netbsd:snprintf
> pool_put() at netbsd:pool_put+0x492
> llentry_free() at netbsd:llentry_free+0xad
> nd6_free() at netbsd:nd6_free+0x161
> nd6_llinfo_timer() at netbsd:nd6_llinfo_timer+0x388
> callout_softclock() at netbsd:callout_softclock+0xc6
> softint_dispatch() at netbsd:softint_dispatch+0xab
> DDB lost frame for netbsd:Xsoftintr+0x4f, trying 0xffffcc8031e9b0f0
> Xsoftintr() at netbsd:Xsoftintr+0x4f
> --- interrupt ---
> 0:
> cpu1: End traceback...
> >How-To-Repeat:
> Reboot a router?
> >Fix:
>

One question.  Is net.inet6.ip6.forwarding of your system 1 or 0?

Thanks,
  ozaki-r