natd panics are back

[Sean McNeil]

On Tue, 2004-11-16 at 10:46 +0300, Gleb Smirnoff wrote:
>   Sean,
> 
> do you have core for this crash?

No, sorry.  I just turned it on (I think).  I will report if I get
another reboot.

All I have to do is set dumpdev="AUTO" in /etc/rc.conf, right?  I did
that and then ran "/etc/rc.d/dumpon start".

> On Mon, Nov 15, 2004 at 02:01:48PM -0800, Sean McNeil wrote:
> S> This was fixed a while ago and now it has made its way back into
> S> current:
> S> 
> S> server# uname -a
> S> FreeBSD server.mcneil.com 6.0-CURRENT FreeBSD 6.0-CURRENT #58: Mon Nov 15 08:40:01 PST 2004     root at server.mcneil.com:/usr/obj/usr/src/sys/AMD64  amd64
> S> 
> S> Nov 15 13:56:16 server kernel: Fatal trap 12: page fault while in kernel mode
> S> Nov 15 13:56:16 server kernel: fault virtual address    = 0x18
> S> Nov 15 13:56:16 server kernel: fault code               = supervisor read, page
> S> not present
> S> Nov 15 13:56:16 server kernel: instruction pointer      = 0x8:0xffffffff80354810Nov 15 13:56:16 server kernel: stack pointer            = 0x10:0xffffffffb1c71620
> S> Nov 15 13:56:16 server kernel: frame pointer            = 0x10:0xffffffffb1c71680
> S> Nov 15 13:56:16 server kernel: code segment             = base 0x0, limit 0xfffff, type 0x1b
> S> Nov 15 13:56:16 server kernel: = DPL 0, pres 1, long 1, def32 0, gran 1
> S> Nov 15 13:56:16 server kernel: processor eflags = interrupt enabled, resume, IOPL = 0
> S> Nov 15 13:56:16 server kernel: current process          = 212 (natd)
> S> Nov 15 13:56:16 server kernel: trap number              = 12
> S> Nov 15 13:56:16 server kernel: panic: page fault
> S> Nov 15 13:56:16 server kernel: KDB: enter: panic
> S> 
> S> 
> S> (gdb) l *0xffffffff80354810
> S> 0xffffffff80354810 is in m_copym (/usr/src/sys/kern/uipc_mbuf.c:373).
> S> 368             MBUF_CHECKSLEEP(wait);
> S> 369             if (off == 0 && m->m_flags & M_PKTHDR)
> S> 370                     copyhdr = 1;
> S> 371             while (off > 0) {
> S> 372                     KASSERT(m != NULL, ("m_copym, offset > size of mbuf chain"));
> S> 373                     if (off < m->m_len)
> S> 374                             break;
> S> 375                     off -= m->m_len;
> S> 376                     m = m->m_next;
> S> 377             }
> S> 
> 
> 
> 
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