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

Just disable 11n for now. ifconfig wlan0 -ht (and reassociate.)

See if it's that.



-adrian


On 17 June 2016 at 04:19, Keith White <kwhite_at_site.uottawa.ca> wrote:
> 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
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