Boot failure for CURRENT on

[Warner Losh]

Hi Iain,

On Dec 30, 2013, at 2:35 AM, Iain Young wrote:

> 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.

If you have the time, narrowing down when the breakage occurred would be a great help.

Warner

> 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]
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