Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753661Ab0L2Spk (ORCPT ); Wed, 29 Dec 2010 13:45:40 -0500 Received: from mail-fx0-f46.google.com ([209.85.161.46]:61537 "EHLO mail-fx0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753166Ab0L2Sph convert rfc822-to-8bit (ORCPT ); Wed, 29 Dec 2010 13:45:37 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:sender:in-reply-to:references:date :x-google-sender-auth:message-id:subject:from:to:cc:content-type :content-transfer-encoding; b=PO7sGoW74w+MmCaGrdOErKbGtfsvOy0OBhpmX4CFTf41NZn9J1JVsanOuYpbD8ekws huBnJVvlpMbrx9XBWXOmj/1aBY/XBZ2QKfnbhS47QIpm1V6YfE5x2HOhTBufKiWyYh0B qQ+SJ8y5AS6Nver16Cm+w0XT2oJVxNWKT/UxE= MIME-Version: 1.0 In-Reply-To: <20101229180650.GE6067@tarshish> References: <4D1A5C2A.5050606@gmail.com> <20101229060637.GA31010@jasper.tkos.co.il> <4D1B33F2.5060600@gmail.com> <20101229180650.GE6067@tarshish> Date: Wed, 29 Dec 2010 19:45:34 +0100 X-Google-Sender-Auth: e5yUkZf3cGXiW2eX2hBEu6IPTYA Message-ID: Subject: Re: dm9000 patch From: Geert Uytterhoeven To: Baruch Siach Cc: Angelo Dureghello , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-m68k@vger.kernel.org, uClinux development list Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 8927 Lines: 187 On Wed, Dec 29, 2010 at 19:06, Baruch Siach wrote: > Hi Angelo, > > On Wed, Dec 29, 2010 at 02:13:22PM +0100, Angelo Dureghello wrote: >> just FYI, i tested kernel 2.6.36.2, unfortunately the issue is still >> there, below the call stack trace. > > Help from the m68k experts seems to be needed. Adding the relevant list to Cc. This is uClinux? Added Cc... >> [    4.620000] eth0: link up, 100Mbps, full-duplex, lpa 0x45E1 >> [   39.390000] BUG: spinlock recursion on CPU#0, httpd/29 >> [   39.390000]  lock: 00189c44, .magic: dead4ead, .owner: httpd/29, >> .owner_cpu: 0 >> [   39.390000] Stack from 00d6a990: >> [   39.390000]         00d6a9bc 000a9710 0017cac7 00189c44 dead4ead >> 00de48f4 0000001d 00000000 >> [   39.390000]         00189c44 0002a646 00145f70 00d6a9f0 000a98e2 >> 00189c44 0017cb2d 00189c44 >> [   39.390000]         00d6aad8 0000001f 00145f5c 001523f6 00189c08 >> 0002a646 00145f70 0002bc52 >> [   39.390000]         00d6a9fc 00145f7e 00189c44 00d6aa28 0002a75e >> 00189c44 0000001f 00d6aad8 >> [   39.390000]         0000001f 00145f5c 00189c08 0002a646 00145f70 >> 0002bc52 00d6aa3c 00000bb6 >> [   39.390000]         0000001f 00189c44 00cfc780 00d6aa84 0000337a >> 0000001f 00d6aa4c 00000001 >> [   39.390000] Call Trace: >> [   39.390000]  [000a9710] spin_bug+0x86/0x11a >> [   39.390000]  [000a98e2] do_raw_spin_lock+0x58/0x120 >> [   39.390000]  [00145f7e] _raw_spin_lock+0xe/0x14 >> [   39.390000]  [0002a75e] __do_IRQ+0x2c/0x108 >> [   39.390000]  [00000bb6] do_IRQ+0x48/0x62 >> [   39.390000]  [0000337a] inthandler+0x6a/0x74 >> [   39.390000]  [0002a82e] __do_IRQ+0xfc/0x108 >> [   39.390000]  [00000bb6] do_IRQ+0x48/0x62 >> [   39.390000]  [0000337a] inthandler+0x6a/0x74 >> [   39.390000]  [000ef0ce] skb_release_all+0x10/0x20 >> [   39.390000]  [000ee6bc] __kfree_skb+0x10/0x92 >> [   39.390000]  [000ee75e] consume_skb+0x20/0x34 >> [   39.390000]  [000e004e] dm9000_start_xmit+0xdc/0xec >> [   39.390000]  [000f67a2] dev_hard_start_xmit+0x146/0x472 >> [   39.390000]  [00106506] sch_direct_xmit+0xc0/0x1bc >> [   39.390000]  [000f9914] dev_queue_xmit+0x160/0x3e4 >> [   39.390000]  [00113b3e] ip_finish_output+0xee/0x318 >> [   39.390000]  [001142b4] ip_output+0x7c/0x88 >> [   39.390000]  [00113dc6] ip_local_out+0x26/0x30 >> [   39.390000]  [00114d9a] ip_queue_xmit+0x152/0x374 >> [   39.390000]  [00125c8c] tcp_transmit_skb+0x3f0/0x732 >> [   39.390000]  [00126f26] tcp_write_xmit+0x178/0x868 >> [   39.390000]  [00127644] __tcp_push_pending_frames+0x2e/0x9a >> [   39.390000]  [0011c3d6] tcp_sendmsg+0x82e/0x98c >> [   39.390000]  [00137544] inet_sendmsg+0x32/0x54 >> [   39.390000]  [000e79a6] sock_aio_write+0xc8/0x138 >> [   39.390000]  [00042590] do_sync_write+0x9e/0xfe >> [   39.390000]  [00042668] vfs_write+0x78/0x84 >> [   39.390000]  [00042a92] sys_write+0x40/0x7a >> [   39.390000]  [00003224] system_call+0x84/0xc2 >> [   39.390000] >> >> dm9000e is as default not visible/selectable in menuconfig for >> Coldfire architectures, so this probably cannot be considered as a >> kernel bug. >> >> I going forward in investigations, every help is appreciated, >> >> regards, >> angelo >> >> >> >> On 29/12/2010 07:06, Baruch Siach wrote: >> >Hi Angelo, >> > >> >On Tue, Dec 28, 2010 at 10:52:42PM +0100, Angelo Dureghello wrote: >> >>sorry to contact you directly but i couldn't get any help from the >> >>kernel.org mailing list, since i am not a developer my mails are >> >>generally skipped. >> >The best way to get the contact info for a piece of kernel code, is using the >> >get_maintainer.pl script. Running 'scripts/get_maintainer.pl -f >> >drivers/net/dm9000.c' gives the following output: >> > >> >netdev@vger.kernel.org >> >linux-kernel@vger.kernel.org >> > >> >I added both to Cc. >> > >> >>I am very near to have a custom board working with MCF5307 cpu and dm9000. >> >>I am using kernel 2.6.36-rc3 with your last patch about >> >>spinlock-recursion already included. >> >You should try to update to the latest .36 kernel, which is currently >> >2.6.36.2. The problem that you experience might be unrelated to the dm9000 >> >driver (or to networking at all), so it might have been fixed in this version. >> > >> >>I have "ping" and "telnet" to the embedded board fully working. >> >>If i try to get a sample web page with some images from the board >> >>httpd with a browser, in 80% of cases i get a trap/oops: >> >Try to enable KALLSYMS in your kernel .config to make your stack trace more >> >meaningful. This is under 'General setup ->  Configure standard kernel features >> >(for small systems) ->  Load all symbols for debugging/ksymoops'. >> > >> >I hope this helps. >> > >> >baruch >> > >> >>[    4.590000] eth0: link up, 100Mbps, full-duplex, lpa 0x45E1 >> >>[   67.630000] BUG: spinlock recursion on CPU#0, httpd/29 >> >>[   67.630000]  lock: 00c42c06, .magic: dead4ead, .owner: httpd/29, >> >>.owner_cpu: 0 >> >>[   67.630000] Stack from 00d7b914: >> >>[   67.630000]         00d7b940 000a8cf0 0015f693 00c42c06 dead4ead >> >>00dec1d4 0000001d 00000000 >> >>[   67.630000]         00c42c06 00006188 00c42800 00d7b974 000a8ec2 >> >>00c42c06 0015f6f9 00002704 >> >>[   67.630000]         00000000 0000001f 00146fa4 00152f0c 00c42b60 >> >>00006188 00c42800 0002b312 >> >>[   67.630000]         00d7b984 0014701e 00c42c06 00000000 00d7b9c4 >> >>000df21c 00c42c06 00000000 >> >>[   67.630000]         00000000 0000001f 00146fa4 00152f0c 000005ea >> >>00cfc640 00006188 000096e8 >> >>[   67.630000]         0002b312 00146fa4 00c42b60 00002704 00d7b9ec >> >>00029d3a 0000001f 00c42800 >> >>[   67.630000] Call Trace: >> >>[   67.630000]  [000a8cf0]  [000a8ec2]  [0014701e]  [000df21c]  [00029d3a] >> >>[   67.630000]  [00029e84]  [00000bb6]  [0000336e]  [000df162]  [000effd6] >> >>[   67.630000]  [00100482]  [000f312e]  [000f9ebc]  [0010dd2a]  [0010e4a0] >> >>[   67.630000]  [0010dfb2]  [0010ef80]  [0011fed6]  [00121170]  [0012188e] >> >>[   67.630000]  [0011ecc6]  [001249fe]  [000e4084]  [0011621c]  [00131a44] >> >>[   67.630000]  [000e11ee]  [00041944]  [00041a1c]  [00041e46]  [00003218] >> >>[   67.630000] BUG: spinlock lockup on CPU#0, httpd/29, 00c42c06 >> >>[   67.630000] Stack from 00d7b934: >> >>[   67.630000]         00d7b974 000a8f66 0015f703 00000000 00dec1d4 >> >>0000001d 00c42c06 00002704 >> >>[   67.630000]         00000000 0000001f 00146fa4 00152f0c 00c42b60 >> >>00006188 00c42800 0002b312 >> >>[   67.630000]         00d7b984 0014701e 00c42c06 00000000 00d7b9c4 >> >>000df21c 00c42c06 00000000 >> >>[   67.630000]         00000000 0000001f 00146fa4 00152f0c 000005ea >> >>00cfc640 00006188 000096e8 >> >>[   67.630000]         0002b312 00146fa4 00c42b60 00002704 00d7b9ec >> >>00029d3a 0000001f 00c42800 >> >>[   67.630000]         0016c1b4 00cfc640 0000001f 0016c178 00029d10 >> >>00146fb8 00d7ba20 00029e84 >> >>[   67.630000] Call Trace: >> >>[   67.630000]  [000a8f66]  [0014701e]  [000df21c]  [00029d3a]  [00029e84] >> >>[   67.630000]  [00000bb6]  [0000336e]  [000df162]  [000effd6]  [00100482] >> >>[   67.630000]  [000f312e]  [000f9ebc]  [0010dd2a]  [0010e4a0]  [0010dfb2] >> >>[   67.630000]  [0010ef80]  [0011fed6]  [00121170]  [0012188e]  [0011ecc6] >> >>[   67.630000]  [001249fe]  [000e4084]  [0011621c]  [00131a44]  [000e11ee] >> >>[   67.630000]  [00041944]  [00041a1c]  [00041e46]  [00003218] >> >> >> >>As i said, i was hoping in your patch but i sadly discovered it is >> >>already included in this kernel version. >> >>Hope you can give me some help or can forward me to an appropriate >> >>mailing list. >> > > -- >                                                     ~. .~   Tk Open Systems > =}------------------------------------------------ooO--U--Ooo------------{= >   - baruch@tkos.co.il - tel: +972.2.679.5364, http://www.tkos.co.il - > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at  http://vger.kernel.org/majordomo-info.html > Please read the FAQ at  http://www.tux.org/lkml/ > -- Gr{oetje,eeting}s,                         Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that.                                 -- Linus Torvalds -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/