panic on boot
Daniel Braniss
danny at cs.huji.ac.il
Thu Dec 23 06:47:41 UTC 2010
> On Wednesday, December 22, 2010 10:58:56 am Daniel Braniss wrote:
> > > On Wednesday, December 22, 2010 5:12:03 am Daniel Braniss wrote:
> > > > the hardware is Sun Fire X2200 M2, and it's discless, PXE booted.
> > > >
> > > > this seems to have started sometime before 8.2, and it
> > > > 'sometimes happens':
> > > >
> > > > FreeBSD 8.2-PRERELEASE #15 r4274: Wed Dec 22 09:11:27 IST 2010c40, rbp =
> > > > 0xffffffff80ef5c60 ---
> > > > danny at rnd:/home/obj/rnd/r+d/stable/8/sys/HUJI amd64
> > > > Timecounter "i8254" frequency 1193182 Hz quality 0
> > > > CPU: Dual-Core AMD Opteron(tm) Processor 2218 (2613.40-MHz K8-class CPU)
> > > > Origin = "AuthenticAMD" Id = 0x40f13 Family = f Model = 41 Stepping = 3
> > > > Features=0x178bfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,
> > > > CMOV,PAT,PSE36,CLFLUSH,MMX,FXSR,SSE,SSE2,HTT>
> > > > Features2=0x2001<SSE3,CX16>
> > > > AMD Features=0xea500800<SYSCALL,NX,MMX+,FFXSR,RDTSCP,LM,3DNow!+,3DNow!>
> > > > AMD Features2=0x1f<LAHF,CMP,SVM,ExtAPIC,CR8>
> > > > ...
> > > > SMP: AP CPU #3 Launched!
> > > > (cd0:ata0:0:0:0): SCSI status: Check Condition
> > > > cpu3 AP:
> > > > (cd0:ata0:0:0:0): SCSI sense: NOT READY asc:3a,0 (Medium not present)
> > > > ID: 0x03000000 VER: 0x80050010 LDR: 0x00000000 DFR: 0xffffffff
> > > > (cd0: lint0: 0x00010700 lint1: 0x00000400 TPR: 0x00000000 SVR: 0x000001ff
> > > > ata0:0: timer: 0x000200ef therm: 0x00010000 err: 0x000000f00: pmc: 0x000104000):
> > > > Error 6, Unretryable error
> > > > SMP: AP CPU #2 Launched!
> > > > cd0 at ata0 bus 0 scbus0 target 0 lun 0
> > > > cpu2 AP:
> > > > cd0: ID: 0x02000000 VER: 0x80050010 LDR: 0x00000000 DFR: 0xffffffff
> > > > <TEAC DV-28E-N P.6A> Removable CD-ROM SCSI-0 device
> > > > lint0: 0x00010700 lint1: 0x00000400 TPR: 0x00000000 SVR: 0x000001ff
> > > > cd0: 33.300MB/s transfers timer: 0x000200ef therm: 0x00010000 err: 0x000000f0 ( pmc: 0x00010400UDMA2,
> > > > ATAPI 12bytes, ioapic0: routing intpin 3 (PIO 65534bytesISA IRQ 3)) to lapic 1 vector 48
> > > > f
> > > > loiwotaapbilce0 :c lreoaunteirn gs tianrttpeidn
> > > > 4 (cd0: Attempt to query device size failed: NOT READY, Medium not present
> > > > ISA IRQ 4) to lapic 2 vector 48
> > > > ioapic0: routing intpin 9 (ISA IRQ 9) to lapic 3 vector 48
> > > > ioapic0: routing intpin 15 (ISA IRQ 15) to lapic 1 vector 49
> > > > ioapic0: routing intpin 17 (PCI IRQ 17) to lapic 2 vector 49
> > > > ioapic0: routing intpin 18 (PCI IRQ 18) to lapic 3 vector 49
> > > > ioapic0: routing intpin 22 (PCI IRQ 22) to lapic 1 vector 50
> > > > ioapic0: routing intpin 23 (PCI IRQ 23) to lapic 2 vector 50
> > > > kernel trap 12 with interrupts disabled
> > > >
> > > >
> > > > Fatal trap 12: page fault while in kernel mode
> > > > cpuid = 0; apic id = 00
> > > > fault virtual address = 0x10
> > > > fault code = supervisor read data, page not present
> > > > instruction pointer = 0x20:0xffffffff808b1581
> > > > stack pointer = 0x28:0xffffffff80ef5b20
> > > > frame pointer = 0x28:0xffffffff80ef5b50
> > > > code segment = base 0x0, limit 0xfffff, type 0x1b
> > > > = DPL 0, pres 1, long 1, def32 0, gran 1
> > > > processor eflags = resume, IOPL = 0
> > > > current process = 0 (swapper)
> > > > trap number = 12
> > > > panic: page fault
> > > > cpuid = 0
> > > > KDB: stack backtrace:
> > > > db_trace_self_wrapper() at db_trace_self_wrapper+0x2a
> > > > kdb_backtrace() at kdb_backtrace+0x37
> > > > panic() at panic+0x187
> > > > trap_fatal() at trap_fatal+0x290
> > > > trap_pfault() at trap_pfault+0x28f
> > > > trap() at trap+0x3df
> > > > calltrap() at calltrap+0x8
> > > > --- trap 0xc, rip = 0xffffffff808b1581, rsp = 0xffffffff80ef5b20, rbp = 0xffffffff80ef5b50 ---
> > > > intr_execute_handlers() at intr_execute_handlers+0x21
> > > > lapic_handle_intr() at lapic_handle_intr+0x37
> > > > Xapic_isr1() at Xapic_isr1+0xa5
> > > > --- interrupt, rip = 0xffffffff808b6cf3, rsp = 0xffffffff80ef5c40, rbp = 0xffffffff80ef5c60 ---
> > > > spinlock_exit() at spinlock_exit+0x33
> > > > ioapic_assign_cpu() at ioapic_assign_cpu+0x123
> > > > intr_shuffle_irqs() at intr_shuffle_irqs+0x9d
> > > > mi_startup() at mi_startup+0x77
> > > > btext() at btext+0x2c
> > > > Uptime: 2s
> > >
> > > Can you do 'l *intr_execute_handlers+0x21' and 'l *ioapic_assign_cpu+0x123'
> > > in 'gdb kernel.debug' of your kernel?
> >
> > sure, as soon as it happens, and it aint happening now :-(
> > but when it will happen, I think it won't let me into the debugger
> > - probably will have to recompile
>
> You don't need to trigger the panic, you can just run
> 'gdb /path/to/kernel.debug' (e.g.
> 'gdb /usr/obj/usr/src/sys/GENERIC/kernel.debug')
sorry, missed the gdb part.
gdb /d/7/boot/kernel/kernel
...
(gdb) l *intr_execute_handlers+0x21
0xffffffff808b1581 is in intr_execute_handlers (/r+d/stable/8/sys/amd64/amd64/i
ntr_machdep.c:243).
238 * We count software interrupts when we process them. The
239 * code here follows previous practice, but there's an
240 * argument for counting hardware interrupts when they're
241 * processed too.
242 */
243 (*isrc->is_count)++;
244 PCPU_INC(cnt.v_intr);
245
246 ie = isrc->is_event;
247
(gdb) l *ioapic_assign_cpu+0x123
0xffffffff808b29c3 is in ioapic_assign_cpu (/r+d/stable/8/sys/amd64/amd64/io_ap
ic.c:383).
378
379 /*
380 * Free the old vector after the new one is established. This
is done
381 * to prevent races where we could miss an interrupt.
382 */
383 if (old_vector) {
384 if (isrc->is_handlers > 0)
385 apic_disable_vector(old_id, old_vector);
386 apic_free_vector(old_id, old_vector, intpin->io_irq);
387 }
BTW, the config has
makeoptions DEBUG=-g
but I don't see no kernel.debug (searched the obj directory, and only found
old versions)
danny
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