From: Luciano Coelho <coelho@ti.com>
To: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com>
Cc: Johannes Berg <johannes@sipsolutions.net>,
linux-wireless@vger.kernel.org, Luis Rodriguez <mcgrof@gmail.com>
Subject: Re: [PATCH] cfg80211: Fix mutex locking in reg_last_request_cell_base
Date: Wed, 18 Jul 2012 17:46:02 +0300 [thread overview]
Message-ID: <1342622762.5363.41.camel@cumari.coelho.fi> (raw)
In-Reply-To: <1342615289-3088-1-git-send-email-mohammed@qca.qualcomm.com>
On Wed, 2012-07-18 at 18:11 +0530, Mohammed Shafi Shajakhan wrote:
> From: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com>
>
> should fix the following issue
>
> [ 3229.815012] [ BUG: lock held when returning to user space! ]
> [ 3229.815016] 3.5.0-rc7-wl #28 Tainted: G W O
> [ 3229.815017]
> ------------------------------------------------
> [ 3229.815019] wpa_supplicant/5783 is leaving the kernel with locks still held!
> [ 3229.815022] 1 lock held by wpa_supplicant/5783:
> [ 3229.815023] #0: (reg_mutex){+.+.+.}, at: [<fa65834d>]
> reg_last_request_cell_base+0x1d/0x60 [cfg80211]
>
> Cc: Luis Rodriguez <mcgrof@gmail.com>
> Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com>
> ---
Tested-by: Luciano Coelho <coelho@ti.com>
This actually also fixes a similar circular lock dependency bug when
starting AP mode with hostapd (which is the case I tested this patch
on): http://pastebin.com/AVczE1Ej
--
Luca.
next prev parent reply other threads:[~2012-07-18 14:46 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-18 12:41 [PATCH] cfg80211: Fix mutex locking in reg_last_request_cell_base Mohammed Shafi Shajakhan
2012-07-18 14:46 ` Luciano Coelho [this message]
2012-07-18 15:20 ` Mohammed Shafi
2012-07-18 15:04 ` Johannes Berg
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