Date: Thu, 8 May 2003 13:00:02 -0400 From: "Robin P. Blanchard" <Robin.Blanchard@gactr.uga.edu> To: "John Baldwin" <jhb@FreeBSD.org> Cc: current@freebsd.org Subject: RE: Fxp / polling / witness panic Message-ID: <EE3D3FBAFFCAED448C21C398FDAD91AC23739C@EBE1.gc.nat>
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> >#0 doadump () at /usr/src/sys/kern/kern_shutdown.c:238
> > 238 dumping++;
> > (kgdb) bt
> >#0 doadump () at /usr/src/sys/kern/kern_shutdown.c:238
> >#1 0xc01d8133 in boot (howto=3D256) at=20
> >/usr/src/sys/kern/kern_shutdown.c:370
> >#2 0xc01d847b in panic () at /usr/src/sys/kern/kern_shutdown.c:543
> >#3 0xc01fb681 in witness_lock (lock=3D0xc1526160, flags=3D8,=20
> > file=3D0xc0308197 "/usr/src/sys/dev/fxp/if_fxp.c", line=3D1465)
> > at /usr/src/sys/kern/subr_witness.c:722
>=20
> What is the actual panic?
>=20
> Is it this one?
>=20
> KASSERT((lock1->li_lock->lo_flags & LO_WITNESS) =3D=3D 0,
> ("lock missing witness structure"));
>=20
> Looks like the lock may be used after it was destroyed or some such.
Yep. That would be the one.
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