Re: kern/55680: llentry_free panic

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

The following reply was made to PR kern/55680; it has been noted by GNATS.

From: Ryota Ozaki <ozaki-r%netbsd.org@localhost>
To: Kimmo Suominen <kim%netbsd.org@localhost>
Cc: "gnats-bugs%NetBSD.org@localhost" <gnats-bugs%netbsd.org@localhost>, kern-bug-people%netbsd.org@localhost, 
	gnats-admin%netbsd.org@localhost, netbsd-bugs%netbsd.org@localhost
Subject: Re: kern/55680: llentry_free panic
Date: Wed, 23 Sep 2020 11:52:36 +0900

 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