RE: RPI-B 11.0-ALPHA3 r301815 panic ["when connecting via WiFi"]

On Thu, 16 Jun 2016, Keith White wrote:

> On Wed, 15 Jun 2016, Mark Millard wrote:
>
>> https://lists.freebsd.org/pipermail/freebsd-current/2016-June/061904.html 
>> reports an RPI-B alignment fault for -r301815 (the snapshot) "when 
>> connecting via WiFi".
>> 
>> -r301872 ( 
>> https://lists.freebsd.org/pipermail/svn-src-head/2016-June/088339.html ) 
>> has a fix for networking vs. alignment handling for armv6 contexts that 
>> might be needed. Quoting:
>> 
>>> Author: ian
>>> Date: Mon Jun 13 16:48:27 2016
>>> New Revision: 301872
>>> URL:
>>> https://svnweb.freebsd.org/changeset/base/301872
>> ...
>
> Thanks for pointing this out!  I'll see if a (complete) rebuild at
> that rev fixes the problem.
>

Tried that.  I still get a panic.

I cross built on an amd64 at r301840, I'll try upgrading that machine too.

In the meantime, other suggestions?

FreeBSD 11.0-ALPHA3 #0 r301872: Thu Jun 16 21:11:44 EDT 2016
     kwhite_at_freebsd11:/usr/obj/arm.armv6/usr/src/sys/RPI-B arm
FreeBSD clang version 3.8.0 (tags/RELEASE_380/final 262564) (based on LLVM 3.8.0)
VT: init without driver.
...
Starting devd.
urtwn0: <vendor 0x0bda product 0x8176, class 0/0, rev 2.00/2.00, addr 4> on usbus0
urtwn0: MAC/BB RTL8188CUS, RF 6052 1T1R
urtwn0: enabling 11n
wlan0: Ethernet address: 00:13:ef:74:07:a8
Created wlan(4) interfaces: wlan0.
...

[ nc rpi-b 22 ]
Fatal kernel mode data abort: 'Alignment Fault' on read
trapframe: 0xc18f28c0
FSR=00000001, FAR=c21a487a, spsr=60000013
r0 =c07a6548, r1 =00000004, r2 =c0605338, r3 =000007b6
r4 =c18f2a28, r5 =c18f2b40, r6 =c21a4876, r7 =c1ccd240
r8 =c1ccd240, r9 =c21a4Stopped at      $a.17+0x38:     ldmib   r6, {r1-r2}
db>

...keith