linux-kernel - Re: ath9k crash 3.2-rc7

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Date:	Mon, 09 Jan 2012 11:40:14 +0400
From:	MR <g7af0ec1e3ea1e7b1@...tmail.ru>
To:	Mohammed Shafi <shafi.wireless@...il.com>
CC:	linux-kernel@...r.kernel.org, linux-wireless@...r.kernel.org,
	"Rajkumar Manoharan" <rmanohar@....qualcomm.com>
Subject: Re: ath9k crash 3.2-rc7

 >> So, I am building 3.2 with two patches: over/under-flow catcher (pity
 >that
 >> it seems to be on a multiple-times-per-second codepath and just leaving
 >the
 > > checks there for everyone is suboptimal) and allegedely proper fix. Both
 > > applied OK with a small offset.
 > 
 > as per our assumption, we should not see those over/underflow errors,
 > with the patch
 > above mentioned. please let us know if you hit upon this warnings,
 > even after the proper fix.

In my experience (and as I understand the situation) if garbage is writen to 
the "chan", it is caught by the check and device is dead-until-reboot anyway. 
On 3.0, even without checks device was dead-until-reboot, but no crash 
happened. All these checks do is converting "panic" to "WiFi broken" for 3.2.


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