From mboxrd@z Thu Jan 1 00:00:00 1970 From: Oliver Hartkopp Subject: Re: [Bugme-new] [Bug 13954] New: Oops in rtnetlink code when creating can device Date: Fri, 14 Aug 2009 08:23:41 +0200 Message-ID: <4A8502ED.2020207@hartkopp.net> References: <20090810215436.0bf47297.akpm@linux-foundation.org> <4A812354.8090704@volkswagen.de> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-15 Content-Transfer-Encoding: 7bit Cc: Andrew Morton , kaber@trash.net, Wolfgang Grandegger , dbaryshkov@gmail.com, bugzilla-daemon@bugzilla.kernel.org, bugme-daemon@bugzilla.kernel.org, "Thuermann, Urs, Dr. (K-EFFI/I)" , Lothar Wassmann , netdev@vger.kernel.org To: unlisted-recipients:; (no To-header on input) Return-path: Received: from mo-p00-ob.rzone.de ([81.169.146.162]:20881 "EHLO mo-p00-ob.rzone.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754663AbZHNGXp (ORCPT ); Fri, 14 Aug 2009 02:23:45 -0400 In-Reply-To: <4A812354.8090704@volkswagen.de> Sender: netdev-owner@vger.kernel.org List-ID: Oliver Hartkopp wrote: > Andrew Morton wrote: >> (switched to email. Please respond via emailed reply-to-all, not via the >> bugzilla web interface). >> >> On Mon, 10 Aug 2009 11:34:28 GMT bugzilla-daemon@bugzilla.kernel.org >> wrote: >> >> >>> http://bugzilla.kernel.org/show_bug.cgi?id=13954 >>> >> >> Thanks. >> >> >>> Summary: Oops in rtnetlink code when creating can device >>> Product: Networking >>> Version: 2.5 >>> Kernel Version: 2.6.30-rc5 >>> Platform: All >>> OS/Version: Linux >>> Tree: Mainline >>> Status: NEW >>> Severity: normal >>> Priority: P1 >>> Component: Other >>> AssignedTo: acme@ghostprotocols.net >>> ReportedBy: dbaryshkov@gmail.com >>> Regression: No >>> >>> >>> I've got a nice oops when looking around new CAN code in kernel. >>> >>> root@qemux86:~# ip link add type can >>> [ 713.113325] BUG: unable to handle kernel NULL pointer dereference >>> at (null) >>> [ 713.114216] IP: [] register_netdevice+0xab/0x420 >>> [ 713.114920] *pdpt = 00000000061bd001 *pde = 0000000000000000 [ >>> 713.115627] Oops: 0000 [#1] SMP [ 713.115972] last sysfs file: >>> /sys/devices/virtual/backlight/fujitsu-laptop/brightness >>> [ 713.116137] Modules linked in: >>> [ 713.116137] [ 713.116137] Pid: 1803, comm: ip Not tainted >>> (2.6.31-rc5 #68) [ 713.116137] EIP: 0060:[] EFLAGS: >>> 00000246 CPU: 0 >>> [ 713.116137] EIP is at register_netdevice+0xab/0x420 >>> [ 713.116137] EAX: 00000000 EBX: 00000000 ECX: 00000001 EDX: 00000001 >>> [ 713.116137] ESI: c72c6000 EDI: 00000000 EBP: c61abb54 ESP: c61abb34 >>> [ 713.116137] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 >>> [ 713.116137] Process ip (pid: 1803, ti=c61aa000 task=c6f395e0 >>> task.ti=c61aa000) >>> [ 713.116137] Stack: >>> [ 713.116137] c61abb54 c13f732f 00000001 c61abbb4 894f908a 00000000 >>> c72c6000 >>> 00000000 >>> [ 713.116137] <0> c61abc74 c13f8278 c61abbb4 00000010 c165d494 c1652090 >>> c61abc18 c6f3d028 >>> [ 713.116137] <0> 894f908a 894f908a c61abc18 c13f7da0 c61abc74 c13f7f46 >>> 00000008 c1546f80 >>> [ 713.116137] Call Trace: >>> [ 713.116137] [] ? rtnl_create_link+0x4f/0x130 >>> [ 713.116137] [] ? rtnl_newlink+0x4d8/0x4e0 >>> [ 713.116137] [] ? rtnl_newlink+0x0/0x4e0 >>> [ 713.116137] [] ? rtnl_newlink+0x1a6/0x4e0 >>> [ 713.116137] [] ? rtnl_newlink+0x0/0x4e0 >>> [ 713.116137] [] ? rtnetlink_rcv_msg+0x180/0x220 >>> [ 713.116137] [] ? rtnetlink_rcv_msg+0x0/0x220 >>> [ 713.116137] [] ? netlink_rcv_skb+0x86/0xb0 >>> [ 713.116137] [] ? rtnetlink_rcv+0x2a/0x50 >>> > Just to close this issue: The patch has just been committed by Dave to net-2.6 for 2.6.31 upstream ... http://git.kernel.org/?p=linux/kernel/git/davem/net-2.6.git;a=commitdiff;h=993e6f2fd487e2acddd711f79cf48f3420731382 Thanks to all of you. Oliver