Re: panic on acpi_cpu_c1()

On Sun, Jun 28, 2009 at 03:18:26PM -0500, Robert Noland wrote:
> On Sun, 2009-06-28 at 22:36 +0400, Anonymous wrote:
> > Hans Ottevanger <hansot_at_iae.nl> writes:
> > 
> > > Norikatsu Shigemura wrote:
> > >> Hi.
> > >>
> > >
> > > Hi,
> > >
> > > I have almost the same issue, just the addresses are different and in
> > > my case the trap occurs on cpu2.
> > >
> > > My system is based on an Intel PB965LT main board with a Q6600 quad
> > > core CPU and 8 Gbyte of RAM. I am also using the amd64 kernel, where
> > > kernel configuration is almost identical to GENERIC, with devices
> > > removed that I do not have and the following lines added
> > >
> > > device          drm
> > > device          radeondrm
> > > device          sound
> > > device          snd_hda
> > >
> > > If I remove the drm and radeondrm devices from the config file and
> > > recompile the kernel, the panic does not occur and the corresponding
> > > modules can be loaded without a problem.
> > 
> > Can you try to boot with DRM and hw.drm.msi=0? In my case it does not
> > panic then.
> 
> drm is a consumer of msi if the hardware is capable.  If you disable msi
> you won't take the path that 194985 fixes, or any path that involves
> msi...  The panic message seemed rather unhelpful to me and I can't
> think of a reason that it would work as a module and not if it is
> compiled in.  Did you clean your kernel and rebuild?
Trap 30 is usually indicates that interrupts were enabled before the
handler was established.

rsvd is set as a filler for unused IDT entries.
> 
> robert.
> 
> > >
> > > Some "binary searching" of Subversion releases shows that the problem
> > > first occurs with r194985. If I update to r195137 and revert the
> > > relevant files from the revision r194985 to r194984, no panic occurs.
> > >
> > > Of course it could very well be that r194985 itself is not the issue,
> > > but triggers a problem somewhere else in the kernel.
> > >
> > > Kind regards,
> > >
> > > Hans
> > >
> > >> 	I got a panic after AP CPU launched on boot.  So I couldn't get
> > >> 	crash dump and information.
> > >>
> > >> - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
> > >> FreeBSD nadesico.ninth-nine.com 8.0-CURRENT FreeBSD 8.0-CURRENT #49: Sun Jun 28 02:53:48 JST 2009     nork_at_nadesico.ninth-nine.com:/usr/obj/usr/src/sys/NADESICO  amd64
> > >> - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
> > >>
> > >> - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
> > >> SMP: AP CPU #3 Launched!
> > >> SMP: AP CPU #1 Launched!
> > >> SMP: AP CPU #2 Launched!
> > >>
> > >> Fatal trap 30: reserved (unknown) fault while in kernel mode
> > >> cpuid = 3; apic id = 03
> > >> instruction pointer     = 0x20:0xffffffff804bce56
> > >> stack pointer           = 0x20:0xffffff8000039b60
> > >> frame pointer           = 0x20:0xffffff8000039b70
> > >> code segment            = base 0x0, limit 0xfffff, type 0x1b
> > >>                         = DPL 0, pres 1, long 1, def32 0, gran 1
> > >> processor eflags        = interrupt enabled, IOPL = 0
> > >> current process         = 11 (idle: cpu3)
> > >> [thread pid 11 tid 100003 ]
> > >> Stopped at      acpi_cpu_c1+0x6:        leave
> > >> db> bt
> > >> Tracing pid 11 tid 100003 td 0xffffff8001863720
> > >> acpi_cpu_c1() at acpi_cpu_c1+0x6
> > >> acpi_cpu_idle() at acpi_cpu_idle+0x20c
> > >> sched_idletd() at sched_idletd+0x123
> > >> fork_exit() at fork_exit+0x117
> > >> fork_trampoline() at fork_trampoline+0xe
> > >> --- trap 0, rip = 0, rsp = 0xffffff8000039d40, rbp = 0 ---
> > >> db>
> > >> - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
> > >>
> > >> 	I can boot with kern.smp.diabled=1, so I get address lines.
> > >> - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
> > >> (kgdb) list *acpi_cpu_c1+0x6
> > >> 0xffffffff804bce56 is in acpi_cpu_c1 (/usr/src/sys/amd64/acpica/acpi_machdep.c:100).
> > >> 95
> > >> 96      void
> > >> 97      acpi_cpu_c1()
> > >> 98      {
> > >> 99              __asm __volatile("sti; hlt");
> > >> 100     }
> > >> (kgdb) list *acpi_cpu_idle+0x20c
> > >> 0xffffffff801b443c is in acpi_cpu_idle (/usr/src/sys/dev/acpica/acpi_cpu.c:966).
> > >> 961         ACPI_ENABLE_IRQS();
> > >> 962
> > >> 963         /* Find the actual time asleep in microseconds. */
> > >> 964         end_time = acpi_TimerDelta(end_time, start_time);
> > >> 965         sc->cpu_prev_sleep = (sc->cpu_prev_sleep * 3 + PM_USEC(end_time)) / 4;
> > >> 966     }
> > >> (kgdb) list *sched_idletd+0x123
> > >> 0xffffffff8030b733 is in sched_idletd (/usr/src/sys/kern/sched_ule.c:2562).
> > >> 2557                                    cpu_spinwait();
> > >> 2558                            }
> > >> 2559                    }
> > >> 2560                    switchcnt = tdq->tdq_switchcnt + tdq->tdq_oldswitchcnt;
> > >> 2561                    if (tdq->tdq_load == 0)
> > >> 2562                            cpu_idle(switchcnt > 1);
> > >> 2563                    if (tdq->tdq_load) {
> > >> 2564                            thread_lock(td);
> > >> - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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> -- 
> Robert Noland <rnoland_at_FreeBSD.org>
> FreeBSD