Date: Wed, 21 Sep 2005 17:38:41 -0400 From: John Baldwin <jhb@FreeBSD.org> To: Harald Schmalzbauer <harry@schmalzbauer.de> Cc: freebsd-current@freebsd.org Subject: Re: nvidia kld panic with debug kernel Message-ID: <200509211738.42593.jhb@FreeBSD.org> In-Reply-To: <200509212328.26394@harrymail> References: <1127245262.32486.1.camel@akima.flintsbach.schmalzbauer.de> <200509211651.09666.jhb@FreeBSD.org> <200509212328.26394@harrymail>
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On Wednesday 21 September 2005 05:28 pm, Harald Schmalzbauer wrote: > Am Mittwoch, 21. September 2005 22:51 CEST schrieb John Baldwin: > > On Tuesday 20 September 2005 03:41 pm, Harald Schmalzbauer wrote: > > > Hello, > > > > > > I get the following panic when using the nvidia driver with a debug > > > kernel, when I disable INVARIANTS and WITNESS everything is working > > > fine! > > > > > > Here's the trace: > > > > > > ACPI APIC Table: <D815EA EA81510A> > > > ioapic0: Changing APIC ID to 1 > > > ioapic0 <Version 2.0> irqs 0-23 on motherboard > > > panic: spin lock rm.mutex_mtx not in order list > > > > You need to add an entry for "rm.mutex_mtx" to the static spin lock > > order list in sys/kern/subr_witness.c. Something like this: > > > > Index: subr_witness.c > > =================================================================== > > RCS file: /usr/cvs/src/sys/kern/subr_witness.c,v > > retrieving revision 1.201 > > diff -u -r1.201 subr_witness.c > > --- subr_witness.c 15 Sep 2005 19:07:14 -0000 1.201 > > +++ subr_witness.c 21 Sep 2005 20:50:45 -0000 > > @@ -363,6 +363,7 @@ > > #ifdef SMP > > { "ap boot", &lock_class_mtx_spin }, > > #endif > > + { "rm.mutex_mtx", &lock_class_mtx_spin }, > > { "sio", &lock_class_mtx_spin }, > > #ifdef __i386__ > > { "cy", &lock_class_mtx_spin }, > > Thanks for your attention! I don't exactly know what this does and why I > should add this spinlock exclude, I posted this error because somewhere > between early BETA4 and late BETA4 I could run the nvidia driver with > debug kernels without this panic. Short before BETA5 this changed back to > the panic I've already seen before BETA4, so I posted it here. > If it is something harmless it's safe to ignore my post, if it's something > which reflects a bug I hope I could help. It has to do with the WITNESS kernel option. WITNESS has to be explicitly told about each spin mutex in the kernel. -- John Baldwin <jhb@FreeBSD.org> <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve" = http://www.FreeBSD.org
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