Date: Thu, 18 Nov 2004 13:11:22 -0800 From: Sean McNeil <sean@mcneil.com> To: "Conrad J. Sabatier" <conrads@cox.net> Cc: current@freebsd.org Subject: Re: natd panics are back Message-ID: <1100812282.96668.1.camel@server.mcneil.com> In-Reply-To: <20041118100224.2428c9d9@dolphin.local.net> References: <1100556108.3025.1.camel@server.mcneil.com> <20041118100224.2428c9d9@dolphin.local.net>
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On Thu, 2004-11-18 at 10:02 -0600, Conrad J. Sabatier wrote:
> On Mon, 15 Nov 2004 14:01:48 -0800, Sean McNeil <sean@mcneil.com> wrote:
>=20
> > This was fixed a while ago and now it has made its way back into
> > current:
> >=20
> > server# uname -a
> > FreeBSD server.mcneil.com 6.0-CURRENT FreeBSD 6.0-CURRENT #58: Mon Nov
> > 15 08:40:01 PST 2004 =20
> > root@server.mcneil.com:/usr/obj/usr/src/sys/AMD64 amd64
> >=20
> > Nov 15 13:56:16 server kernel: Fatal trap 12: page fault while in
> > kernel mode Nov 15 13:56:16 server kernel: fault virtual address =3D
> > 0x18 Nov 15 13:56:16 server kernel: fault code =3D
> > supervisor read, page not present
> > Nov 15 13:56:16 server kernel: instruction pointer =3D
> > 0x8:0xffffffff80354810Nov 15 13:56:16 server kernel: stack pointer =20
> > =3D 0x10:0xffffffffb1c71620
> > Nov 15 13:56:16 server kernel: frame pointer =3D
> > 0x10:0xffffffffb1c71680 Nov 15 13:56:16 server kernel: code segment =20
> > =3D base 0x0, limit 0xfffff, type 0x1b
> > Nov 15 13:56:16 server kernel: =3D DPL 0, pres 1, long 1, def32 0, gran
> > 1 Nov 15 13:56:16 server kernel: processor eflags =3D interrupt enabled=
,
> > resume, IOPL =3D 0 Nov 15 13:56:16 server kernel: current process =
=20
> > =3D 212 (natd)
> > Nov 15 13:56:16 server kernel: trap number =3D 12
> > Nov 15 13:56:16 server kernel: panic: page fault
> > Nov 15 13:56:16 server kernel: KDB: enter: panic
> >=20
> >=20
> > (gdb) l *0xffffffff80354810
> > 0xffffffff80354810 is in m_copym (/usr/src/sys/kern/uipc_mbuf.c:373).
> > 368 MBUF_CHECKSLEEP(wait);
> > 369 if (off =3D=3D 0 && m->m_flags & M_PKTHDR)
> > 370 copyhdr =3D 1;
> > 371 while (off > 0) {
> > 372 KASSERT(m !=3D NULL, ("m_copym, offset > size o=
f
> > mbuf chain")); 373 if (off < m->m_len)
> > 374 break;
> > 375 off -=3D m->m_len;
> > 376 m =3D m->m_next;
> > 377 }
>=20
> Are you still having this problem? I went a few days without upgrading,
> then cvsupped and built a new world/kernel yesterday. No panic on boot
> with natd.
>=20
> This is on my amd64 box. Haven't upgraded my i386 box yet.
No, this problem has not reared its ugly head again. I hope I have it
setup correctly for crash dumps now, so if it does happen again I should
be able to get more info.
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