From mboxrd@z Thu Jan 1 00:00:00 1970 From: Johannes Berg Subject: Re: d80211 deadlock with wpa_supplicant and rmmod Date: Thu, 12 Jul 2007 12:02:18 +0200 Message-ID: <1184234538.6669.30.camel@johannes.berg> References: <1caff7430707111617o70a534a5x2cf6b611a91f301a@mail.gmail.com> <20070711234153.GB5099@tuxdriver.com> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="=-rcDVXwOhzqZ/Mh9sZvkD" Cc: seventh guardian , netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-wireless-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: "John W. Linville" Return-path: In-Reply-To: <20070711234153.GB5099-2XuSBdqkA4R54TAoqtyWWQ@public.gmane.org> Sender: linux-wireless-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: netdev.vger.kernel.org --=-rcDVXwOhzqZ/Mh9sZvkD Content-Type: text/plain Content-Transfer-Encoding: quoted-printable On Wed, 2007-07-11 at 19:41 -0400, John W. Linville wrote: > > >I believe we have a deadlock in d80211. > >=20 > > I have it too. But I'm using iwl3945 driver, in-kernel mac80211, and a > > gentoo kernel (basically a patched vanilla-2.6.22.1). My machine is a > > x86_64 core 2 duo. > >=20 > > >The following triggers it on my 2way SMT machine with preempt. > > > > > >modprobe bcm43xx-d80211 > > >add sta0 > > >ifconfig sta0 up > > >start wpa_supplicant on the interface > > >rmmod bcm43xx-d80211 Sounds like the bug with the scheduled work locking. See the "mac80211/bcm43xx deadlock" thread, there's a patch, report back if you can/can not reproduce with the patch. johannes --=-rcDVXwOhzqZ/Mh9sZvkD Content-Type: application/pgp-signature; name=signature.asc Content-Description: This is a digitally signed message part -----BEGIN PGP SIGNATURE----- Comment: Johannes Berg (powerbook) iD8DBQBGlfwq/ETPhpq3jKURAv2uAJ9BJbZkR9derqS5t/a3nRXMi/IZyQCfTPJh lwn5hjSgm5XkqvRU3pibfss= =6yDj -----END PGP SIGNATURE----- --=-rcDVXwOhzqZ/Mh9sZvkD--