kern/140036: [iwn] [lor] lock order reversal with iwn0_com_lock and iwn0 softc lock

[Benjamin Kaduk]

The following reply was made to PR kern/140036; it has been noted by GNATS.

From: Benjamin Kaduk <kaduk at MIT.EDU>
To: Bernhard Schmidt <bschmidt at techwires.net>
Cc: bug-followup at freebsd.org
Subject: Re: kern/140036: [iwn] [lor] lock order reversal with iwn0_com_lock
 and iwn0 softc lock
Date: Sat, 31 Oct 2009 19:24:59 -0400 (EDT)

 Indeed, I think I saw a lockup a couple days ago, possibly when
 my card had dissociated and was trying to reassociate.
 
 Thanks for looking into this,
 
 -Ben
 
 On Thu, 29 Oct 2009, Bernhard Schmidt wrote:
 
 > Hi,
 >
 > Removing the IWN_LOCK(sc) leads to races when calling iwn_cmd(). It's better
 > to drop the IEEE80211_LOCK(ic). I do have a patch in test which hopefully will
 > hit the tree soon.
 >
 > --
 > Bernhard
 >