Boot failure for CURRENT on

[Iain Young]

Hi Folks,

Tried a build of -CURRENT yesterday (28/29th Dec), and had the following 
crash on a Beaglebone White.

Thought it might be clocks not enabled for the extra serial ports, as
I had a similar crash when I forgot to enable them before, so applied
my  (old) patch, but still the same, so wasn't that.

Did an svn update today (Dec 30th, revision 260082), and while I've
not rebuilt the kernel yet, didn't see any changes in the arm tree
anyway, so suspect the problem remains.

I'm not great with the debugger, but if anyone wants extra info
from it, just let me know which commands to type.

Output from fdt_start to the crash is below.


Iain


fdt_start: 0x0060A128
Kernel entry at 0x80200100...
Kernel args: (null)
KDB: debugger backends: ddb
KDB: current backend: ddb
Copyright (c) 1992-2013 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
	The Regents of the University of California. All rights reserved.
FreeBSD is a registered trademark of The FreeBSD Foundation.
FreeBSD 11.0-CURRENT #6 r260013M: Sun Dec 29 20:43:46 UTC 2013
     root at beaglebone:/usr/obj/usr/src/sys/BEAGLEBONE-TARDIS arm
gcc version 4.2.1 20070831 patched [FreeBSD]
CPU: Cortex A8-r3 rev 2 (Cortex-A core)
  Supported features: ARM_ISA THUMB2 JAZELLE THUMBEE ARMv4 Security_Ext
  WB disabled EABT branch prediction enabled
LoUU:2 LoC:2 LoUIS:1
Cache level 1:
  32KB/64B 4-way data cache WT WB Read-Alloc
  32KB/64B 4-way instruction cache Read-Alloc
Cache level 2:
  256KB/64B 8-way unified cache WT WB Read-Alloc Write-Alloc
real memory  = 268435456 (256 MB)
avail memory = 255172608 (243 MB)
Texas Instruments AM3358 Processor, Revision ES1.0
random device not loaded; using insecure entropy
random: <Software, Yarrow> initialized
nexus0: <Open Firmware Nexus device>
simplebus0: <Flattened device tree simple bus> on nexus0
aintc0: <TI AINTC Interrupt Controller> mem 0x48200000-0x48200fff on 
simplebus0
aintc0: Revision 5.0
ti_scm0: <TI Control Module> mem 0x44e10000-0x44e11fff on simplebus0
am335x_prcm0: <AM335x Power and Clock Management> mem 
0x44e00000-0x44e012ff on simplebus0
am335x_prcm0: Clocks: System 24.0 MHz, CPU 500 MHz
am335x_dmtimer0: <AM335x DMTimer> mem 
0x44e05000-0x44e05fff,0x44e31000-0x44e31fff,0x48040000-0x48040fff,0x48042000-0x48042fff,0x48044000-0x48044fff,0x48046000-0x48046fff,0x48048000-0x48048fff,0x4804a000-0x4804afff 
irq 66,67,68,69,92,93,94,95 on simplebus0

vm_fault(0xc063dca8, 1000000, 1, 0) -> 1
Fatal kernel mode data abort: 'Translation Fault (S)'
trapframe: 0xc0770b60
FSR=00000005, FAR=0100013e, spsr=a0000093
r0 =0100013e, r1 =c05b6d94, r2 =0100013e, r3 =c0561878
r4 =c05602fc, r5 =0100013e, r6 =c0770c28, r7 =c18dda80
r8 =c1805e00, r9 =c0761000, r10=c18dda80, r11=c0770bc4
r12=c0770bc8, ssp=c0770bb0, slr=c054abb0, pc =c040f0a4

[ thread pid 0 tid 100000 ]
Stopped at      strcmp+0x14:    ldrb    r0, [r2]