From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S266600AbTGFDPK (ORCPT ); Sat, 5 Jul 2003 23:15:10 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S266601AbTGFDPK (ORCPT ); Sat, 5 Jul 2003 23:15:10 -0400 Received: from auth22.inet.co.th ([203.150.14.104]:23562 "EHLO auth22.inet.co.th") by vger.kernel.org with ESMTP id S266600AbTGFDO7 (ORCPT ); Sat, 5 Jul 2003 23:14:59 -0400 From: Michael Frank To: Daniel Ritz , Dominik Brodowski Subject: Re: yenta-socket oops with 2.5.73-mm3, 2.5.74, 2.5.74-mm1 Date: Sun, 6 Jul 2003 11:26:34 +0800 User-Agent: KMail/1.5.2 Cc: "linux-kernel" , "linux-pcmcia" References: <200307060039.34263.daniel.ritz@gmx.ch> In-Reply-To: <200307060039.34263.daniel.ritz@gmx.ch> X-OS: KDE 3 on GNU/Linux MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200307061126.34635.mflt1@micrologica.com.hk> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hello Daniel and Dominik, Now I got two patches to try, thank you. I got the patch below (not yet tested) from Dominik. I will test this further on Monday. Regards Michael diff -ruN linux-original/drivers/pcmcia/cs.c linux/drivers/pcmcia/cs.c --- linux-original/drivers/pcmcia/cs.c 2003-07-05 10:22:58.000000000 +0200 +++ linux/drivers/pcmcia/cs.c 2003-07-05 10:28:56.000000000 +0200 @@ -351,6 +351,10 @@ wait_for_completion(&socket->thread_done); BUG_ON(!socket->thread); + + /* ok, allow interrupts to be parsed */ + socket->init_done = 1; + pcmcia_parse_events(socket, SS_DETECT); return 0; @@ -361,6 +365,8 @@ struct pcmcia_socket *socket = class_get_devdata(class_dev); client_t *client; + socket->init_done = 0; /* block interrupts */ + if (socket->thread) { init_completion(&socket->thread_done); socket->thread = NULL; @@ -870,6 +876,9 @@ void pcmcia_parse_events(struct pcmcia_socket *s, u_int events) { + if (unlikely(&s->init_done == 0)) + return; + spin_lock(&s->thread_lock); s->thread_events |= events; spin_unlock(&s->thread_lock); diff -ruN linux-original/include/pcmcia/ss.h linux/include/pcmcia/ss.h --- linux-original/include/pcmcia/ss.h 2003-07-05 10:23:00.000000000 +0200 +++ linux/include/pcmcia/ss.h 2003-07-05 10:24:22.000000000 +0200 @@ -215,6 +215,7 @@ wait_queue_head_t thread_wait; spinlock_t thread_lock; /* protects thread_events */ unsigned int thread_events; + unsigned short init_done; /* interrupts are parsed only if this is != 0 */ /* pcmcia (16-bit) */ struct pcmcia_bus_socket *pcmcia; On Sunday 06 July 2003 06:39, Daniel Ritz wrote: > hello > > problem is that an interrupt arrives before socket->thread_wait is > initialized so we crash in __wake_up_common. i think source of the > interrupt is socket_init called before the initialization. but an interrupt > can still arrive before... > > i think the whole init stuff should happen even before we do request_irq(). > i tried moving around pcmcia_register_socket() but then my card doesn't > come up... maybe we should add something like pcmcia_alloc_socket() which > does kmalloc() a socket struct and does all the important init stuff? > russel? > > michael, can you try this one? > > rgds > -daniel > > > --- 1.50/drivers/pcmcia/cs.c Mon Jun 30 22:22:30 2003 > +++ edited/cs.c Sat Jul 5 23:58:07 2003 > @@ -338,13 +338,13 @@ > socket->erase_busy.next = socket->erase_busy.prev = &socket->erase_busy; > INIT_LIST_HEAD(&socket->cis_cache); > spin_lock_init(&socket->lock); > - > - init_socket(socket); > - > init_completion(&socket->thread_done); > init_waitqueue_head(&socket->thread_wait); > init_MUTEX(&socket->skt_sem); > spin_lock_init(&socket->thread_lock); > + > + init_socket(socket); > + > ret = kernel_thread(pccardd, socket, CLONE_KERNEL); > if (ret < 0) > return ret; > > On Friday 04 July 2003 09:10, Michael Frank wrote: > > modprobe yenta-socket produces oops below _only_ after cold boot and > > _only_ when e100 loaded. No PCMCIA problems with this system with 2.4 and > > 2.5 until recent PCMCIA rework. > > > > Reproduced behavior with 2.5.73-mm3, 2.5.74, 2.5.74-mm1 > > > > 2.5.73-mm2 no oops but hangs about 1 in 10 at > > PCI: Enabling device 0:12.0 (0->2) (PCMCIA). e100 was loaded but not > > tested wo e100 > > > > Conditions: > > Cold-boot - no oops when warm-boot+load after successful load or when > > unload+load e100 loaded > > > > Oops appears 1 in 4 loads and looks similar every time > > > > Setup: > > ACPI core enabled, no usb > > > > $ lsmod > > pcmcia_core > > toshiba_acpi > > e100 > > > > $ lspci > > 00:00.0 Host bridge: Transmeta Corporation LongRun Northbridge (rev 01) > > 00:00.1 RAM memory: Transmeta Corporation SDRAM controller > > 00:00.2 RAM memory: Transmeta Corporation BIOS scratchpad > > 00:04.0 VGA compatible controller: S3 Inc. 86C270-294 Savage/IX-MV (rev > > 13) 00:06.0 Multimedia audio controller: ALi Corporation M5451 PCI > > AC-Link Controller Audio Device (rev 01) 00:07.0 ISA bridge: ALi > > Corporation M1533 PCI to ISA Bridge [Aladdin IV] 00:0e.0 Ethernet > > controller: Intel Corp. 82557/8/9 [Ethernet Pro 100] (rev 08) 00:10.0 IDE > > interface: ALi Corporation M5229 IDE (rev c3) > > 00:11.0 Bridge: ALi Corporation M7101 PMU > > 00:12.0 CardBus bridge: Toshiba America Info Systems ToPIC95 PCI to > > Cardbus Bridge with ZV Support (rev 32) 00:14.0 USB Controller: ALi > > Corporation USB 1.1 Controller (rev 03) > > > > No serial port, Oops taken from screen > > unable to handle null pointer dereference at 0 > > oops: 0000 #1 > > EFLAGS 00010086 > > EIP is at __wake_up_common+0x13 > > eax ce09c9c0 ebx 286 ecx 1 edx 0 > > esi 1 edi 0 ebp ccc67dcc esp ccc67dc0 > > ds 7b es 7b ss 68 > > Process modprobe pid 1153 threadinfo ccc66000 task cd68e080 > > Stack: 286 4000001 0 ccc67de8 c011afa1 ce09c9c0 3 1 > > 0 ce09c800 ccc67df0 cf8a3ecf cccc67e04 cf87a7ea ce09c830 80 > > cdffec00 ccc67e24 c010d0aa 5 ce09c800 ccc67e50 280 5 > > Call trace: > > __wake_up+0x11 > > pcmcia_parse_events+0x23 > > yenta_interrupt+0x26 > > handle_IRQ_event+0x2a > > do_IRQ+0x82 > > common_interrupt+0x18 > > setup_irq+0x9b > > yenta_interrupt+0x0 > > request_irq+0x89 > > yenta_probe+0x137 > > yenta_interrupt+0x0 > > pci_device_probe_static+0x20 > > pci_device_probe+0x21 > > bus_match+0x38 > > driver_attach+0x3e > > bus_add_driver+0x6e > > driver_register+0x36 > > pci_register_driver+0x6a > > yenta_socket_init+0xd > > sys_init_module+0xe0 > > syscall_call+0x7 > > Code: 8b 3a 8b 45 08 83 c0 04 39 c2 74 23 8b 5a f4 8b 4d 14 51 8b > > <0> Fatal exception in interrupt > > In interrupt handler - not syncing > > > > It is now running allright by starting pcmcia ahead of network. -- Powered by linux-2.5.74-mm1. Compiled with gcc-2.95-3 - mature and rock solid My current linux related activities: - 2.5 yenta_socket testing - Test development and testing of swsusp and ACPI S3 - Everyday usage of 2.5 kernel More info on 2.5 kernel: http://www.codemonkey.org.uk/post-halloween-2.5.txt