From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from xc.sipsolutions.net ([83.246.72.84]:39446 "EHLO sipsolutions.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752099AbYF3Ryk (ORCPT ); Mon, 30 Jun 2008 13:54:40 -0400 Subject: Re: IBSS lockdep failure From: Johannes Berg To: Tomas Winkler Cc: Linux Wireless , bruno randolf In-Reply-To: <1ba2fa240806300940v35c5f2efq6a7036de096006bc@mail.gmail.com> (sfid-20080630_184029_253158_D448274F) References: <1ba2fa240806300848v4fd92b72n565fc113e1c122b8@mail.gmail.com> <1214841181.5507.54.camel@johannes.berg> <1ba2fa240806300914n7d28f874i4ee43cb999903135@mail.gmail.com> <1214842913.5507.58.camel@johannes.berg> <1ba2fa240806300940v35c5f2efq6a7036de096006bc@mail.gmail.com> (sfid-20080630_184029_253158_D448274F) Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="=-v/rFl64ckPB2yuPMkS6P" Date: Mon, 30 Jun 2008 19:53:56 +0200 Message-Id: <1214848436.5507.61.camel@johannes.berg> (sfid-20080630_195443_746736_EA855AE2) Mime-Version: 1.0 Sender: linux-wireless-owner@vger.kernel.org List-ID: --=-v/rFl64ckPB2yuPMkS6P Content-Type: text/plain Content-Transfer-Encoding: quoted-printable > wlan0: beacon TSF higher than local TSF - IBSS merge with BSSID > XX:XX:XX:XX:XX:XD > phy0: Adding new IBSS station XX:XX:XX:XX:XX:X1 (dev=3Dwlan0) > phy0: Allocated STA XX:XX:XX:XX:XX:X1 > phy0: Inserted STA XX:XX:XX:XX:XX:X1 > wlan0: RX ProbeReq SA=3DXX:XX:XX:XX:XX:X1 DA=3Dff:ff:ff:ff:ff:ff > BSSID=3Dff:ff:ff:ff:ff:ff (tx_last_beacon=3D1) > wlan0: Sending ProbeResp to XX:XX:XX:XX:XX:X1 > RX beacon SA=3DXX:XX:XX:XX:XX:XC BSSID=3DXX:XX:XX:XX:XX:XD TSF=3D0x14dc0b= d5c > BCN=3D0x14dc0be19 diff=3D-189 @1071562 That value is suspiciously low, you might want to double-check you're setting the correct RX timestamp in the driver, mac80211 expects the timestamp to be at the first symbol of the frame. > phy0: Destroyed STA XX:XX:XX:XX:XX:XB > phy0: Destroyed STA XX:XX:XX:XX:XX:XC Ok so at least it's not trying to remove the same STA twice :) > BUG: unable to handle kernel NULL pointer dereference at 00000004 > IP: [] zap_class+0x22/0x64 > *pde =3D 00000000 > Oops: 0002 [#1] SMP > Modules linked in: mac80211 cfg80211 netconsole i915 drm autofs4 hidp > rfcomm l2cap sunrpc cpufreq_ondemand acpi_cpufreq dm_multipath sbs Any chance of getting a stack trace? zap_class seems weird. johannes --=-v/rFl64ckPB2yuPMkS6P Content-Type: application/pgp-signature; name=signature.asc Content-Description: This is a digitally signed message part -----BEGIN PGP SIGNATURE----- Comment: Johannes Berg (powerbook) iQIcBAABAgAGBQJIaR2xAAoJEKVg1VMiehFYrW4QAK8+WUNbbu+nFeGEXfjPYZsM 3t7XgPuD8r31MIDxSfudLyCotnAduYmIPMMBgbU07jUca6jfprpt/d823ByEnm3i xu+aYfUXW0ECc/wHkFxt+E6lO+81i7o9efyOcIB05DN+O9eRE2PFGgfCqTe5SNu/ 1eKx8Jm/NeauEc7j0qtUdtNlebmtKFrpAg/85VCq6zBoSBoAxujm6aP7CLPcSWjn HWC++GFaUphOCdpTXFK935laVQIViyNr41fUQlOK+UuKAFw9QqFemHAxfc7KSkTy oLdAjRd04QHkow+Aq9+yBEwzmHXRxrpphUwNUal8TgLfEcVgkEMGiD3lzQpVMn1d j/EtXUHsggy5CPIP+TD2mYzISdpU0zasrnGiXW8M0vKOvKvmq1HL1jqJRcbkwSF6 lDlB+pqOzMYjBt6OZC10vsd1dgiRLJOeCelsZNXhl1dRo194khbCbQtH7pLhUQvD HmUHs6dr/Uo5Vfve5IvD+MF0NGvxbMBkcQaiOLyA5Ci3ubOa2b+VvfoqqT9+cP0r /lHNXcG6TySZT1jqJ0VMt9HJuQHq0ALnTf1aRCvSVdp4BoibsX4htt0F0iBiQxTX n2TiAiszyMWGv0H2dXtl/lKaVnslNYI5vgTinVVknI6BJfOn2vwEOylLtOkBDr2U BZAjovG0s8E0r8fU8rzu =IST1 -----END PGP SIGNATURE----- --=-v/rFl64ckPB2yuPMkS6P--