From owner-freebsd-wireless@FreeBSD.ORG  Mon Nov 21 15:16:13 2011
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Date: Mon, 21 Nov 2011 07:58:41 -0700 (MST)
From: Warren Block <wblock@wonkity.com>
To: Alexander Best <arundel@freebsd.org>
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	(wonkity.com [127.0.0.1]); Mon, 21 Nov 2011 07:58:41 -0700 (MST)
Cc: freebsd-wireless@freebsd.org
Subject: Re: issues with the recent ath commits (r227740, r227651, ...)
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On Mon, 21 Nov 2011, Alexander Best wrote:

> hi there,
>
> after the recent ath commits (r227740, r227651, ...) i'm experiencing issues
> with my
>
> ath0@pci0:5:1:0:	class=0x020000 card=0x5a001385 chip=0x0013168c rev=0x01 hdr=0x00
>    vendor     = 'Atheros Communications Inc.'
>    device     = 'AR5212/AR5213 Wireless Network Adapter'
>    class      = network
>    subclass   = ethernet
>
> card on amd64. my system will either panic right during boot up or will
> actually boot, but then after a few minutes lock up my whole system.
>
> i'll try reverting my kernel to r227739 to check, if that fixes the issue.
> if it does, i'll try to gather some more stats to identify the issue more
> thoroughly. if it does not, i'll try reverting past the other recent ath
> commits (such as r227651).

Also seen here with a AR5BXB63:

ath0@pci0:1:0:0:        class=0x028000 card=0x0087106b chip=0x0024168c rev=0x01 hdr=0x00
     vendor     = 'Atheros Communications Inc.'
     device     = 'AR5008 Wireless Network Adapter'
     class      = network
     bar   [10] = type Memory, range 64, base 0xfddf0000, size 65536, enabled

Updated to latest -head a couple of days ago, it came up and worked fine 
in 11g mode for a few minutes, possibly until nontrivial network 
activity.  Then locked up hard.  Removing the card and using wired 
networking solved it, but I haven't gone back to narrow it down yet.