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x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=microsoft.com header.result=pass header_is_org_domain=yes Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S935124AbeCSQxY (ORCPT ); Mon, 19 Mar 2018 12:53:24 -0400 Received: from mail-dm3nam03on0111.outbound.protection.outlook.com ([104.47.41.111]:6417 "EHLO NAM03-DM3-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S935115AbeCSQLp (ORCPT ); Mon, 19 Mar 2018 12:11:45 -0400 From: Sasha Levin To: "linux-kernel@vger.kernel.org" , "stable@vger.kernel.org" CC: Luca Coelho , Johannes Berg , Sasha Levin Subject: [PATCH AUTOSEL for 3.18 004/102] mac80211: bail out from prep_connection() if a reconfig is ongoing Thread-Topic: [PATCH AUTOSEL for 3.18 004/102] mac80211: bail out from prep_connection() if a reconfig is ongoing Thread-Index: AQHTv5zwO3TL5wmxaEKPe4tCf7iXSg== Date: Mon, 19 Mar 2018 16:11:29 +0000 Message-ID: <20180319161117.17833-4-alexander.levin@microsoft.com> References: <20180319161117.17833-1-alexander.levin@microsoft.com> In-Reply-To: <20180319161117.17833-1-alexander.levin@microsoft.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [52.168.54.252] x-ms-publictraffictype: Email x-microsoft-exchange-diagnostics: 1;DM5PR2101MB0805;7:cZ8ZkacPkrbWW+DMQkFhG9y6MILqEHWVErN4jRJL0+jRJdOaRbJ+ugNXdOE4IJFfMYWtWEbBVSFvTkZr5zXkGS/P27/4/v+MsS4AnUt59+Tx7UPFPqPqfMlOmhzusqp4bspEgHzYn7vcyi/Rrcst3Cep0Lzs7ayRJ6BQnW65SOMSZldsOsDlZ+gemTVxusH/M5o6YLAma+HiS6YjW/jCS7o0KMTvO/xFO9S3t1vdlojbw0/AAo3YpcG6dLgLgJfV;20:6HzWr8+UZAgngagiH43LP1rHb0sXu4ElFcsXzZ36tMjvxI/f2TOagdeivKrHnna21t0CEEJuAvZQdwRB7Uo+OaNuqn5+fnObxMuvMx0dK8qn3sgQ4b6JMTK3LJD6IwVUttUc1GFYhcsa3+Dc+SyXx756eBYfiavPPoY9XklW4Sk= x-ms-office365-filtering-ht: Tenant x-ms-office365-filtering-correlation-id: 82b515a4-07d5-4adb-e698-08d58db41418 x-microsoft-antispam: UriScan:;BCL:0;PCL:0;RULEID:(7020095)(4652020)(48565401081)(5600026)(4604075)(3008032)(4534165)(4627221)(201703031133081)(201702281549075)(2017052603328)(7193020);SRVR:DM5PR2101MB0805; 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This ultimately causes an oops in the iwlwifi driver (at least). This fixes bugzilla 195299 partly. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=3D195299 Signed-off-by: Luca Coelho Signed-off-by: Johannes Berg Signed-off-by: Sasha Levin --- net/mac80211/mlme.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index b13634c677f1..156e8e13ffed 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -3995,6 +3995,10 @@ static int ieee80211_prep_connection(struct ieee8021= 1_sub_if_data *sdata, if (WARN_ON(!ifmgd->auth_data && !ifmgd->assoc_data)) return -EINVAL; =20 + /* If a reconfig is happening, bail out */ + if (local->in_reconfig) + return -EBUSY; + if (assoc) { rcu_read_lock(); have_sta =3D sta_info_get(sdata, cbss->bssid); --=20 2.14.1