Kernel build fails on ARM: Cannot fork: Cannot allocate memory

[Tim Kientzle]

On Jun 23, 2013, at 9:16 AM, Konstantin Belousov wrote:

> On Sun, Jun 23, 2013 at 06:43:46PM +0400, Ruslan Bukin wrote:
>> On Sun, Jun 23, 2013 at 05:32:48PM +0300, Konstantin Belousov wrote:
>>> 
>>> This is useless without a backtrace.
>> 
>> Trying to mount root from ufs:/dev/da0 []...
>> WARNING: / was not properly dismounted
>> warning: no time-of-day clock registered, system time will not be set accurately
>> panic: __rw_wlock_hard: recursing but non-recursive rw pmap pv global @ /usr/home/br/dev/head/sys/arm/arm/pmap-v6.c:1289
>> 
>> KDB: enter: panic
>> [ thread pid 1 tid 100001 ]
>> Stopped at      kdb_enter+0x48: ldrb    r15, [r15, r15, ror r15]!
>> db> bt
>> Tracing pid 1 tid 100001 td 0xc547f620
>> _end() at 0xde9d0530
>> scp=0xde9d0530 rlv=0xc1211458 (db_trace_thread+0x34)
>>        rsp=0xde9d0514 rfp=0xc12d1b60
>> Bad frame pointer: 0xc12d1b60
>> db> 
> This is completely broken.  It seems that witness triggered the panic,
> and ddb is unable to obtain a backtrace from the normal panic(9) call.

Kernel backtraces are currently broken on ARM EABI kernels.

Tim

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