From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mga04.intel.com ([192.55.52.120]:19828 "EHLO mga04.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750878AbcDOEQI (ORCPT ); Fri, 15 Apr 2016 00:16:08 -0400 From: "Grumbach, Emmanuel" To: "linux-wireless@vger.kernel.org" , "bp@alien8.de" CC: "linux-kernel@vger.kernel.org" , linuxwifi , "Dreyfuss, Haim" , "Coelho, Luciano" , "Berg, Johannes" , "kvalo@codeaurora.org" , "netdev@vger.kernel.org" , "Sharon, Sara" Subject: Re: WARNING: CPU: 1 PID: 2485 at drivers/net/wireless/intel/iwlwifi/pcie/trans.c:1752 iwl_trans_pcie_grab_nic_access+0x110/0x120 [iwlwifi] Date: Fri, 15 Apr 2016 04:16:02 +0000 Message-ID: <1460693762.2648.5.camel@intel.com> (sfid-20160415_061629_619425_3ECA7BC1) References: <20160415020710.GA2700@cz.tnic> In-Reply-To: <20160415020710.GA2700@cz.tnic> Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Sender: linux-wireless-owner@vger.kernel.org List-ID: T24gRnJpLCAyMDE2LTA0LTE1IGF0IDAyOjA3ICswMDAwLCBCb3Jpc2xhdiBQZXRrb3Ygd3JvdGU6 DQo+IEhpLA0KPiANCj4gc28gSSdtIHNlZWluZyB0aGlzIHdoZW4gd2xhbjAgdHJpZXMgdG8gYXNz b2NpYXRlLiBPbiA0LjYtcmMyICsgdGlwLg0KPiBBZnRlciB0aGF0LCB3aWZpIGlzIGRlYWQgaW4g dGhlIHdhdGVyLiBBbnlvbmUgaGF2ZSBhIGNsdWU/DQo+IA0KPiBBbmQgNC41IHNlZW1zIGZpbmUs IEknbSB0eXBpbmcgZnJvbSBpdCBhcyB3ZSBzcGVhay4NCj4gLi4uDQoNCjxzbmlwPg0KDQoNCj4g WyAgNjYxLjE0MjY1N10gLS0tLS0tLS0tLS0tWyBjdXQgaGVyZSBdLS0tLS0tLS0tLS0tDQo+IFsg IDY2MS4xNDI4MTZdIFdBUk5JTkc6IENQVTogMSBQSUQ6IDI0ODUgYXQNCj4gZHJpdmVycy9uZXQv d2lyZWxlc3MvaW50ZWwvaXdsd2lmaS9wY2llL3RyYW5zLmM6MTc1Mg0KPiBpd2xfdHJhbnNfcGNp ZV9ncmFiX25pY19hY2Nlc3MrMHgxMTAvMHgxMjAgW2l3bHdpZmldDQo+IFsgIDY2MS4xNDMyMzFd IFRpbWVvdXQgd2FpdGluZyBmb3IgaGFyZHdhcmUgYWNjZXNzIChDU1JfR1BfQ05UUkwNCj4gMHhm ZmZmZmZmZikNCj4gDQoNClRoaXMgbWVhbnMgdGhhdCB3ZSBoYXZlIGFuIGVsZWN0cmljYWwgaXNz dWUgdGhhdCBwcmV2ZW50cyB1cyBmcm9tDQphY2Nlc3NpbmcgdGhlIGRldmljZSBvdmVyIHRoZSBQ Q0kgYnVzLiBCQVIgaGFzIGJlZW4gZ2FyYmFnZWQgb3IgYWxpa2UuDQpFdmVyeSB0aW1lIEkgdHJp ZWQgdG8gZGVidWcgdGhhdCBmcm9tIHRoZSBkcml2ZXIgc2lkZSBpdCBoYXMgLi4uDQpmYWlsZWQu IEJlY2F1c2UgdGhlICJnb29kIiBpbiB0aGUgZW5kIGRpZCBleGhpYml0IHRoZSBwcm9ibGVtLiBT bywNCnVubGVzcyB5b3UgYXJlIHJlYWR5IHRvIGVtYmFyayBmb3IgYSBiaXNlY3Rpb24gam91cm5l eSAoYW5kIGhvcGUgdGhhdA0KdGhpcyB0aW1lIHdoZW4geW91IHR5cGUgJ2dpdCBiaXNlY3QgZ29v ZCcgaXQgaXMgcmVhbGx5ICdnb29kJyksIEkgY2FuJ3QNCmRvIG11Y2guDQpXaGF0IEkgY2FuIHN1 Z2dlc3QgaXMgdG8gaW5zdGFsbCBvdXIgbGF0ZXN0IGJhY2twb3J0IGJhc2VkIHRyZWUgb24gNC41 Lg0KVGhpcyB3aWxsIGFsbG93IHlvdSB0byBoYXZlIGFuIGVhc2lseSBiaXNlY3RhYmxlIHRyZWUu IEJ1dCBpdCBtaWdodA0KdmVyeSB3ZWxsIGJlIHRoYXQgNC41ICsgbGF0ZXN0IGRyaXZlciAoZXF1 aXZhbGVudCB0byA0LjYgYXMgZmFyIGFzDQppd2x3aWZpIGlzIGNvbmNlcm5lZCkgd2lsbCBiZSBm aW5lLg0KVGhlIGJhY2twb3J0IHRyZWUgaXMgaGVyZSBbMV0uIFVuZm9ydHVuYXRlbHksIHRoYXQn cyB0aGUgb25seSB0aGluZyBJDQpjYW4gc3VnZ2VzdCBmb3Igbm93Lg0KDQpbMV0gaHR0cHM6Ly9n aXQua2VybmVsLm9yZy9jZ2l0L2xpbnV4L2tlcm5lbC9naXQvaXdsd2lmaS9iYWNrcG9ydC1pd2x3 aQ0KZmkuZ2l0Lw0KPiAtLSANCj4gUmVnYXJkcy9HcnVzcywNCj4gICAgIEJvcmlzLg0KPiANCj4g RUNPIHRpcCAjMTAxOiBUcmltIHlvdXIgbWFpbHMgd2hlbiB5b3UgcmVwbHkuIFNyc2x5Lg== From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751783AbcDOEQL (ORCPT ); Fri, 15 Apr 2016 00:16:11 -0400 Received: from mga04.intel.com ([192.55.52.120]:19828 "EHLO mga04.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750878AbcDOEQI (ORCPT ); Fri, 15 Apr 2016 00:16:08 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.24,485,1455004800"; d="scan'208";a="85579663" From: "Grumbach, Emmanuel" To: "linux-wireless@vger.kernel.org" , "bp@alien8.de" CC: "linux-kernel@vger.kernel.org" , linuxwifi , "Dreyfuss, Haim" , "Coelho, Luciano" , "Berg, Johannes" , "kvalo@codeaurora.org" , "netdev@vger.kernel.org" , "Sharon, Sara" Subject: Re: WARNING: CPU: 1 PID: 2485 at drivers/net/wireless/intel/iwlwifi/pcie/trans.c:1752 iwl_trans_pcie_grab_nic_access+0x110/0x120 [iwlwifi] Thread-Topic: WARNING: CPU: 1 PID: 2485 at drivers/net/wireless/intel/iwlwifi/pcie/trans.c:1752 iwl_trans_pcie_grab_nic_access+0x110/0x120 [iwlwifi] Thread-Index: AQHRlqrAhqNxKohaXkWOO61GIGrhqp+KO2oA Date: Fri, 15 Apr 2016 04:16:02 +0000 Message-ID: <1460693762.2648.5.camel@intel.com> References: <20160415020710.GA2700@cz.tnic> In-Reply-To: <20160415020710.GA2700@cz.tnic> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.255.205.88] Content-Type: text/plain; charset="utf-8" Content-ID: <2F184CDE9E5CF24FB8CD6005D4BDFC5B@intel.com> MIME-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from base64 to 8bit by mail.home.local id u3F4GMJQ032088 On Fri, 2016-04-15 at 02:07 +0000, Borislav Petkov wrote: > Hi, > > so I'm seeing this when wlan0 tries to associate. On 4.6-rc2 + tip. > After that, wifi is dead in the water. Anyone have a clue? > > And 4.5 seems fine, I'm typing from it as we speak. > ... > [ 661.142657] ------------[ cut here ]------------ > [ 661.142816] WARNING: CPU: 1 PID: 2485 at > drivers/net/wireless/intel/iwlwifi/pcie/trans.c:1752 > iwl_trans_pcie_grab_nic_access+0x110/0x120 [iwlwifi] > [ 661.143231] Timeout waiting for hardware access (CSR_GP_CNTRL > 0xffffffff) > This means that we have an electrical issue that prevents us from accessing the device over the PCI bus. BAR has been garbaged or alike. Every time I tried to debug that from the driver side it has ... failed. Because the "good" in the end did exhibit the problem. So, unless you are ready to embark for a bisection journey (and hope that this time when you type 'git bisect good' it is really 'good'), I can't do much. What I can suggest is to install our latest backport based tree on 4.5. This will allow you to have an easily bisectable tree. But it might very well be that 4.5 + latest driver (equivalent to 4.6 as far as iwlwifi is concerned) will be fine. The backport tree is here [1]. Unfortunately, that's the only thing I can suggest for now. [1] https://git.kernel.org/cgit/linux/kernel/git/iwlwifi/backport-iwlwi fi.git/ > -- > Regards/Gruss, > Boris. > > ECO tip #101: Trim your mails when you reply. Srsly. From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Grumbach, Emmanuel" Subject: Re: WARNING: CPU: 1 PID: 2485 at drivers/net/wireless/intel/iwlwifi/pcie/trans.c:1752 iwl_trans_pcie_grab_nic_access+0x110/0x120 [iwlwifi] Date: Fri, 15 Apr 2016 04:16:02 +0000 Message-ID: <1460693762.2648.5.camel@intel.com> References: <20160415020710.GA2700@cz.tnic> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Cc: "linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , linuxwifi , "Dreyfuss, Haim" , "Coelho, Luciano" , "Berg, Johannes" , "kvalo-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org" , "netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , "Sharon, Sara" To: "linux-wireless-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" , "bp-Gina5bIWoIWzQB+pC5nmwQ@public.gmane.org" Return-path: In-Reply-To: <20160415020710.GA2700-q7QVrfafQE0@public.gmane.org> Content-Language: en-US Content-ID: <2F184CDE9E5CF24FB8CD6005D4BDFC5B-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org> Sender: linux-wireless-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: netdev.vger.kernel.org T24gRnJpLCAyMDE2LTA0LTE1IGF0IDAyOjA3ICswMDAwLCBCb3Jpc2xhdiBQZXRrb3Ygd3JvdGU6 DQo+IEhpLA0KPiANCj4gc28gSSdtIHNlZWluZyB0aGlzIHdoZW4gd2xhbjAgdHJpZXMgdG8gYXNz b2NpYXRlLiBPbiA0LjYtcmMyICsgdGlwLg0KPiBBZnRlciB0aGF0LCB3aWZpIGlzIGRlYWQgaW4g dGhlIHdhdGVyLiBBbnlvbmUgaGF2ZSBhIGNsdWU/DQo+IA0KPiBBbmQgNC41IHNlZW1zIGZpbmUs IEknbSB0eXBpbmcgZnJvbSBpdCBhcyB3ZSBzcGVhay4NCj4gLi4uDQoNCjxzbmlwPg0KDQoNCj4g WyAgNjYxLjE0MjY1N10gLS0tLS0tLS0tLS0tWyBjdXQgaGVyZSBdLS0tLS0tLS0tLS0tDQo+IFsg IDY2MS4xNDI4MTZdIFdBUk5JTkc6IENQVTogMSBQSUQ6IDI0ODUgYXQNCj4gZHJpdmVycy9uZXQv d2lyZWxlc3MvaW50ZWwvaXdsd2lmaS9wY2llL3RyYW5zLmM6MTc1Mg0KPiBpd2xfdHJhbnNfcGNp ZV9ncmFiX25pY19hY2Nlc3MrMHgxMTAvMHgxMjAgW2l3bHdpZmldDQo+IFsgIDY2MS4xNDMyMzFd IFRpbWVvdXQgd2FpdGluZyBmb3IgaGFyZHdhcmUgYWNjZXNzIChDU1JfR1BfQ05UUkwNCj4gMHhm ZmZmZmZmZikNCj4gDQoNClRoaXMgbWVhbnMgdGhhdCB3ZSBoYXZlIGFuIGVsZWN0cmljYWwgaXNz dWUgdGhhdCBwcmV2ZW50cyB1cyBmcm9tDQphY2Nlc3NpbmcgdGhlIGRldmljZSBvdmVyIHRoZSBQ Q0kgYnVzLiBCQVIgaGFzIGJlZW4gZ2FyYmFnZWQgb3IgYWxpa2UuDQpFdmVyeSB0aW1lIEkgdHJp ZWQgdG8gZGVidWcgdGhhdCBmcm9tIHRoZSBkcml2ZXIgc2lkZSBpdCBoYXMgLi4uDQpmYWlsZWQu IEJlY2F1c2UgdGhlICJnb29kIiBpbiB0aGUgZW5kIGRpZCBleGhpYml0IHRoZSBwcm9ibGVtLiBT bywNCnVubGVzcyB5b3UgYXJlIHJlYWR5IHRvIGVtYmFyayBmb3IgYSBiaXNlY3Rpb24gam91cm5l eSAoYW5kIGhvcGUgdGhhdA0KdGhpcyB0aW1lIHdoZW4geW91IHR5cGUgJ2dpdCBiaXNlY3QgZ29v ZCcgaXQgaXMgcmVhbGx5ICdnb29kJyksIEkgY2FuJ3QNCmRvIG11Y2guDQpXaGF0IEkgY2FuIHN1 Z2dlc3QgaXMgdG8gaW5zdGFsbCBvdXIgbGF0ZXN0IGJhY2twb3J0IGJhc2VkIHRyZWUgb24gNC41 Lg0KVGhpcyB3aWxsIGFsbG93IHlvdSB0byBoYXZlIGFuIGVhc2lseSBiaXNlY3RhYmxlIHRyZWUu IEJ1dCBpdCBtaWdodA0KdmVyeSB3ZWxsIGJlIHRoYXQgNC41ICsgbGF0ZXN0IGRyaXZlciAoZXF1 aXZhbGVudCB0byA0LjYgYXMgZmFyIGFzDQppd2x3aWZpIGlzIGNvbmNlcm5lZCkgd2lsbCBiZSBm aW5lLg0KVGhlIGJhY2twb3J0IHRyZWUgaXMgaGVyZSBbMV0uIFVuZm9ydHVuYXRlbHksIHRoYXQn cyB0aGUgb25seSB0aGluZyBJDQpjYW4gc3VnZ2VzdCBmb3Igbm93Lg0KDQpbMV0gaHR0cHM6Ly9n aXQua2VybmVsLm9yZy9jZ2l0L2xpbnV4L2tlcm5lbC9naXQvaXdsd2lmaS9iYWNrcG9ydC1pd2x3 aQ0KZmkuZ2l0Lw0KPiAtLSANCj4gUmVnYXJkcy9HcnVzcywNCj4gICAgIEJvcmlzLg0KPiANCj4g RUNPIHRpcCAjMTAxOiBUcmltIHlvdXIgbWFpbHMgd2hlbiB5b3UgcmVwbHkuIFNyc2x5Lg== -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html