From: Johannes Berg <johannes@sipsolutions.net>
To: Arik Nemtsov <arik@wizery.com>
Cc: linux-wireless@vger.kernel.org, "Luis R. Rodriguez" <mcgrof@suse.com>
Subject: Re: [PATCH] cfg80211: fix deadlock during reg chan check
Date: Wed, 07 Jan 2015 14:54:00 +0100 [thread overview]
Message-ID: <1420638840.3407.15.camel@sipsolutions.net> (raw)
In-Reply-To: <1419847199-25493-1-git-send-email-arik@wizery.com> (sfid-20141229_110002_459476_3F75B800)
On Mon, 2014-12-29 at 11:59 +0200, Arik Nemtsov wrote:
> If a P2P GO is active, the cfg80211_reg_can_beacon function will take
> the wdev lock, in its call to cfg80211_go_permissive_chan. But the wdev lock
> is already taken by the parent channel-checking function, causing a
> deadlock.
> Split the checking code into two parts. The first part will check if the
> wdev is active and saves the channel under the wdev lock. The second part
> will check actual channel validity according to type.
Applied to mac80211.git.
johannes
prev parent reply other threads:[~2015-01-07 13:54 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-12-29 9:59 [PATCH] cfg80211: fix deadlock during reg chan check Arik Nemtsov
2015-01-06 10:51 ` Johannes Berg
2015-01-07 13:34 ` Arik Nemtsov
2015-01-07 13:37 ` Johannes Berg
2015-01-07 13:42 ` Arik Nemtsov
2015-01-07 13:46 ` Johannes Berg
2015-01-07 13:48 ` Arik Nemtsov
2015-01-07 13:50 ` Johannes Berg
2015-01-07 13:52 ` Arik Nemtsov
2015-01-07 13:54 ` Johannes Berg [this message]
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