From: "John W. Linville" <linville@tuxdriver.com>
To: "Luis R. Rodriguez" <lrodriguez@atheros.com>
Cc: johannes@sipsolutions.net, linux-wireless@vger.kernel.org,
stable@kernel.org
Subject: Re: [PATCH 4/4] cfg80211: fix race between core hint and driver's custom apply
Date: Mon, 18 May 2009 14:47:18 -0400 [thread overview]
Message-ID: <20090518184718.GJ2814@tuxdriver.com> (raw)
In-Reply-To: <1242248682-22051-5-git-send-email-lrodriguez@atheros.com>
On Wed, May 13, 2009 at 05:04:42PM -0400, Luis R. Rodriguez wrote:
> Its possible for cfg80211 to have scheduled the work and for
> the global workqueue to not have kicked in prior to a cfg80211
> driver's regulatory hint or wiphy_apply_custom_regulatory().
>
> Although this is very unlikely its possible and should fix
> this race. When this race would happen you are expected to have
> hit a null pointer dereference panic.
>
> Cc: stable@kernel.org
> Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
(Same questions as for 3/4...)
What is the effect of this race? What justifies this for 2.6.30
and/or stable? It is getting late in the cycle for 2.6.30...
John
--
John W. Linville Someday the world will need a hero, and you
linville@tuxdriver.com might be all we have. Be ready.
next prev parent reply other threads:[~2009-05-18 19:00 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-05-13 21:04 [PATCH 0/4] cfg80211: two reg fixes Luis R. Rodriguez
2009-05-13 21:04 ` [PATCH 1/4] cfg80211: return immediately if num reg rules > NL80211_MAX_SUPP_REG_RULES Luis R. Rodriguez
2009-05-13 21:04 ` [PATCH 2/4] cfg80211: cleanup return calls on nl80211_set_reg() Luis R. Rodriguez
2009-05-13 21:04 ` [PATCH 3/4] cfg80211: fix in nl80211_set_reg() Luis R. Rodriguez
2009-05-18 18:46 ` John W. Linville
2009-05-18 20:02 ` Luis R. Rodriguez
2009-05-13 21:04 ` [PATCH 4/4] cfg80211: fix race between core hint and driver's custom apply Luis R. Rodriguez
2009-05-13 22:08 ` Johannes Berg
2009-05-13 22:29 ` Luis R. Rodriguez
2009-05-13 22:35 ` Johannes Berg
2009-05-13 22:37 ` Luis R. Rodriguez
2009-05-14 18:05 ` Luis R. Rodriguez
2009-05-18 18:47 ` John W. Linville [this message]
2009-05-18 20:04 ` Luis R. Rodriguez
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