panic possibly on on bridge member removal

[Kim Culhan]

On Mon, Oct 1, 2012 at 8:04 AM, John Baldwin <jhb at freebsd.org> wrote:
> On Saturday, September 29, 2012 8:40:03 am Kim Culhan wrote:
>> After a few hours of operation involving tap0 added to the bridge
>> running openvpn
>> and shutting down openvpn which removes tap0 from the bridge, the
>> machine is found to have a panic:
>>
>> Fatal trap 12: page fault while in kernel mode
>> cpuid = 1; apic id = 01
>> fault virtual address   = 0x188
>> fault code              = supervisor read data, page not present
>> instruction pointer     = 0x20:0xffffffff82a14f96
>> stack pointer           = 0x28:0xffffff8000285670
>> frame pointer           = 0x28:0xffffff80002856b0
>> code segment            = base 0x0, limit 0xfffff, type 0x1b
>>                         = DPL 0, pres 1, long 1, def32 0, gran 1
>> processor eflags        = interrupt enabled, resume, IOPL = 0
>> current process         = 12 (swi5: fast taskq)
>> [ thread pid 12 tid 100022 ]
>> Stopped at      bridge_enqueue+0x86:    calll   *0x188(%r12)
>> db> bt
>> Tracing pid 12 tid 100022 td 0xfffffe0003aff000
>> bridge_enqueue() at bridge_enqueue+0x86
>
> Can you run 'gdb /boot/kernel/kernel' and do 'l *bridge_enqueue+0x86'?
>
> --
> John Baldwin

(gdb) l *bridge_enqueue+0x86
No symbol "bridge_enqueue" in current context.
(gdb)

--
-kim