Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Fri, 6 Jul 2001 23:53:38 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Fri, 6 Jul 2001 23:53:29 -0400 Received: from toscano.org ([64.50.191.142]:59076 "HELO bubba.toscano.org") by vger.kernel.org with SMTP id ; Fri, 6 Jul 2001 23:53:24 -0400 Date: Fri, 6 Jul 2001 23:53:24 -0400 From: Pete Toscano To: kernel Subject: Re: Hi all, a strange full lock in SMP-kernel 2.4.6 and 2.4.5 Message-ID: <20010706235324.A19386@bubba.toscano.org> Mail-Followup-To: Pete Toscano , kernel In-Reply-To: <20010707021356.A2232@eresmas.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: <20010707021356.A2232@eresmas.net>; from linuxx@eresmas.net on Sat, Jul 07, 2001 at 02:13:56AM +0100 X-Unexpected: The Spanish Inquisition X-Uptime: 11:41pm up 1 day, 13:40, 3 users, load average: 0.06, 0.30, 0.35 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org I think I've seen this same problem, at least with regards to USB printing. Yesterday, I traced the problem down to a patch to usb-uhci.c in the transition from 2.4.3 to 2.4.4. The problem persists today. A work around for this problem is to use the alternate UHCI driver (uhci.o). What motherboard and chipset are you using. I use the Tyan Tiger 133 motherboard with the VIA Apollo Pro 133a chipset. Someone else who I heard from uses another VIA-based chipset (I think, he never replied to my question). Maybe this is a VIA-related problem, like the APIC problem is. (Do you use "noapic" when you boot? He and I both have SMP systems too....) I posted something on the linux-usb list yesterday about this problem and with all the info I was able to track down, but I have yet to see any response. I've taken this as far as I can by myself. I don't know enough about kernel programming or about USB to check the code in usb-uhci.c, but I'm more than happy to help by providing information and/or testing potential patches/fixes. pete On Sat, 07 Jul 2001, linuxx wrote: > Well Full lock in 2.4.5 and .6 when in a SMP intel p III 500mhz when i try to print any file in a epson 760 usb and parport > printer. > I put in antecedents . With 2.4.3 and before the printer via usb or partport print ok . In 2.4.5-6 when i try to send > anything to /dev/usb/lp0 like cat a.txt > /dev/usb/lp0 the system fail or if i do in lpr same . I have no problem if i use parport whit the sames kernels .I have all right configured. With the same computer in other distribution .Same kernel = same lock .Of course the LPRng and gcc are > all compiled in this machine and work right for months , both stables versions.I put the only trace y can get for the lock. > I hope help something for any other thing i not subscribed to kernel list so i like to know any answer you can give. THANKS > > CPU: 0 > EIP: 0010:[] > EFLAGS: 00000086 > eax: cd747600 ebx: cd1d42a0 ecx: 00000001 edx: cd747600 > esi: cd1d41fc edi: 00000000 ebp: 00000004 esp: cd077f34 > ds: 0018 es: 0018 ss:0018 > Process cat (pid: 378, stackpage=cd077000) > Stack: 0000017a 00000000 00000005 00000000 00000206 cd1d41a0 cd8f0000 00000000 > 00000004 d0837aac cd1d41fc d084e411 cd1d41fc 00000000 cdec8c60 ffffffea > 00000000 00000004 c013a1c6 cdec8c60 0804c860 00000004 cdec8c80 00000025 > > Call Trace: [<013a1c6>] [] > Code: 80 7b 24 00 f3 90 7e f8 e9 e0 d0 ff ff 80 bf 80 00 00 00 00 > console shuts up ... > > +++ killed by SIGSEGV +++ - 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/