From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261518AbVFKR52 (ORCPT ); Sat, 11 Jun 2005 13:57:28 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261764AbVFKR52 (ORCPT ); Sat, 11 Jun 2005 13:57:28 -0400 Received: from relay02.roc.ny.frontiernet.net ([66.133.182.165]:63900 "EHLO relay02.roc.ny.frontiernet.net") by vger.kernel.org with ESMTP id S261518AbVFKR4x (ORCPT ); Sat, 11 Jun 2005 13:56:53 -0400 Message-ID: <42AB25E7.5000405@xfs.org> Date: Sat, 11 Jun 2005 12:56:55 -0500 From: Stephen Lord User-Agent: Mozilla Thunderbird 1.0.2-1.3.3 (X11/20050513) X-Accept-Language: en-us, en MIME-Version: 1.0 To: =?ISO-8859-1?Q?Pozs=E1r_Bal=E1zs?= Cc: Andrew Morton , linux-kernel@vger.kernel.org, rusty@rustcorp.com.au Subject: Re: Race condition in module load causing undefined symbols References: <42A99D9D.7080900@xfs.org> <20050610112515.691dcb6e.akpm@osdl.org> <20050611082642.GB17639@ojjektum.uhulinux.hu> <42AAE5C8.9060609@xfs.org> <20050611150525.GI17639@ojjektum.uhulinux.hu> In-Reply-To: <20050611150525.GI17639@ojjektum.uhulinux.hu> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Pozsár Balázs wrote: > On Sat, Jun 11, 2005 at 08:23:20AM -0500, Steve Lord wrote: > >>I think this is not actually module loading itself, but a problem >>between the fork/exec/wait code in nash and the kernel. > > > I do not use nash, only bash, so this is not a nash-specific issue. > > I disabled hyperthreading and things started working, so are there any HT related scheduling bugs right now? Steve Here is my cpu information: processor : 0 vendor_id : GenuineIntel cpu family : 15 model : 2 model name : Intel(R) Pentium(R) 4 CPU 2.60GHz stepping : 9 cpu MHz : 2606.469 cache size : 512 KB fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 2 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx f And here is my system successfully coming up with 2.6.12-rc6 with HT disabled in the bios: Linux version 2.6.12-rc6 (slord@fubar.frontiernet.net) (gcc version 3.4.3 200502 27 (Red Hat 3.4.3-22.fc3)) #3 SMP Fri Jun 10 22:14:34 CDT 2005 BIOS-provided physical RAM map: BIOS-e820: 0000000000000000 - 000000000009f800 (usable) BIOS-e820: 000000000009f800 - 00000000000a0000 (reserved) BIOS-e820: 00000000000f0000 - 0000000000100000 (reserved) BIOS-e820: 0000000000100000 - 000000007fff0000 (usable) BIOS-e820: 000000007fff0000 - 000000007fff3000 (ACPI NVS) BIOS-e820: 000000007fff3000 - 0000000080000000 (ACPI data) BIOS-e820: 00000000fec00000 - 0000000100000000 (reserved) 1151MB HIGHMEM available. 896MB LOWMEM available. found SMP MP-table at 000f5d80 On node 0 totalpages: 524272 DMA zone: 4096 pages, LIFO batch:1 Normal zone: 225280 pages, LIFO batch:31 HighMem zone: 294896 pages, LIFO batch:31 DMI 2.2 present. Using APIC driver default ACPI: RSDP (v000 IntelR ) @ 0x000f7810 ACPI: RSDT (v001 IntelR AWRDACPI 0x42302e31 AWRD 0x00000000) @ 0x7fff3000 ACPI: FADT (v001 IntelR AWRDACPI 0x42302e31 AWRD 0x00000000) @ 0x7fff3040 ACPI: MADT (v001 IntelR AWRDACPI 0x42302e31 AWRD 0x00000000) @ 0x7fff7a40 ACPI: DSDT (v001 INTELR AWRDACPI 0x00001000 MSFT 0x0100000e) @ 0x00000000 ACPI: PM-Timer IO Port: 0x408 ACPI: Local APIC address 0xfee00000 ACPI: LAPIC (acpi_id[0x00] lapic_id[0x00] enabled) Processor #0 15:2 APIC version 20 ACPI: LAPIC (acpi_id[0x01] lapic_id[0x01] disabled) ACPI: LAPIC_NMI (acpi_id[0x00] high edge lint[0x1]) ACPI: LAPIC_NMI (acpi_id[0x01] high edge lint[0x1]) ACPI: IOAPIC (id[0x02] address[0xfec00000] gsi_base[0]) IOAPIC[0]: apic_id 2, version 32, address 0xfec00000, GSI 0-23 ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl) ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level) ACPI: IRQ0 used by override. ACPI: IRQ2 used by override. ACPI: IRQ9 used by override. Enabling APIC mode: Flat. Using 1 I/O APICs Using ACPI (MADT) for SMP configuration information Allocating PCI resources starting at 80000000 (gap: 80000000:7ec00000) Built 1 zonelists Kernel command line: ro root=/dev/Volume00/Vol_Root vga=9 mapped APIC to ffffd000 (fee00000) mapped IOAPIC to ffffc000 (fec00000) Initializing CPU#0 CPU 0 irqstacks, hard=c0410000 soft=c03f0000 PID hash table entries: 4096 (order: 12, 65536 bytes) Detected 2606.469 MHz processor. Using pmtmr for high-res timesource Console: colour VGA+ 132x44 Dentry cache hash table entries: 131072 (order: 7, 524288 bytes) Inode-cache hash table entries: 65536 (order: 6, 262144 bytes) Memory: 2072744k/2097088k available (1985k kernel code, 23152k reserved, 769k da ta, 228k init, 1179584k highmem) Checking if this processor honours the WP bit even in supervisor mode... Ok. Calibrating delay loop... 5160.96 BogoMIPS (lpj=2580480) Security Framework v1.0.0 initialized SELinux: Initializing. SELinux: Starting in permissive mode selinux_register_security: Registering secondary module capability Capability LSM initialized as secondary Mount-cache hash table entries: 512 CPU: After generic identify, caps: bfebfbff 00000000 00000000 00000000 00004400 00000000 00000000 CPU: After vendor identify, caps: bfebfbff 00000000 00000000 00000000 00004400 0 0000000 00000000 CPU: Trace cache: 12K uops, L1 D cache: 8K CPU: L2 cache: 512K CPU: Hyper-Threading is disabled CPU: After all inits, caps: bfebfbff 00000000 00000000 00000080 00004400 0000000 0 00000000 Intel machine check architecture supported. Intel machine check reporting enabled on CPU#0. CPU0: Intel P4/Xeon Extended MCE MSRs (12) available CPU0: Thermal monitoring enabled Enabling fast FPU save and restore... done. Enabling unmasked SIMD FPU exception support... done. Checking 'hlt' instruction... OK. CPU0: Intel(R) Pentium(R) 4 CPU 2.60GHz stepping 09 Total of 1 processors activated (5160.96 BogoMIPS). ENABLING IO-APIC IRQs ..TIMER: vector=0x31 pin1=2 pin2=-1 Brought up 1 CPUs CPU0 attaching sched-domain: domain 0: span 00000001 groups: 00000001 domain 1: span 00000001 groups: 00000001 checking if image is initramfs... it is Freeing initrd memory: 1214k freed NET: Registered protocol family 16 PCI: PCI BIOS revision 2.10 entry at 0xfba20, last bus=3 PCI: Using configuration type 1 mtrr: v2.0 (20020519) ACPI: Subsystem revision 20050309 ACPI: Interpreter enabled ACPI: Using IOAPIC for interrupt routing ACPI: PCI Root Bridge [PCI0] (0000:00) PCI: Probing PCI hardware (bus 00) PCI: Ignoring BAR0-3 of IDE controller 0000:00:1f.2 Boot video device is 0000:01:00.0 PCI: Transparent bridge - 0000:00:1e.0 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0._PRT] ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.HUB0._PRT] ACPI: PCI Interrupt Link [LNKA] (IRQs 3 4 5 7 9 *10 11 12 14 15) ACPI: PCI Interrupt Link [LNKB] (IRQs 3 4 *5 7 9 10 11 12 14 15) ACPI: PCI Interrupt Link [LNKC] (IRQs 3 4 5 7 9 10 *11 12 14 15) ACPI: PCI Interrupt Link [LNKD] (IRQs 3 4 5 7 *9 10 11 12 14 15) ACPI: PCI Interrupt Link [LNKE] (IRQs 3 4 5 7 9 10 11 12 14 15) *0, disabled. ACPI: PCI Interrupt Link [LNKF] (IRQs 3 4 5 7 9 10 11 12 14 15) *0, disabled. ACPI: PCI Interrupt Link [LNK0] (IRQs 3 4 5 7 9 10 11 12 14 15) *0, disabled. ACPI: PCI Interrupt Link [LNK1] (IRQs *3 4 5 7 9 10 11 12 14 15) ACPI: Power Resource [PFAN] (off) Linux Plug and Play Support v0.97 (c) Adam Belay pnp: PnP ACPI init pnp: PnP ACPI: found 13 devices usbcore: registered new driver usbfs usbcore: registered new driver hub PCI: Using ACPI for IRQ routing PCI: If a device doesn't work, try "pci=routeirq". If it helps, post a report pnp: 00:0a: ioport range 0x400-0x4bf could not be reserved apm: BIOS not found. highmem bounce pool size: 64 pages Total HugeTLB memory allocated, 0 VFS: Disk quotas dquot_6.5.1 Dquot-cache hash table entries: 1024 (order 0, 4096 bytes) SELinux: Registering netfilter hooks Initializing Cryptographic API pci_hotplug: PCI Hot Plug PCI Core version: 0.5 ACPI: Fan [FAN] (off) ACPI: Thermal Zone [THRM] (45 C) isapnp: Scanning for PnP cards... isapnp: No Plug & Play device found Real Time Clock Driver v1.12 Linux agpgart interface v0.101 (c) Dave Jones agpgart: Detected an Intel i875 Chipset. agpgart: AGP aperture is 128M @ 0xf0000000 PNP: PS/2 Controller [PNP0303:PS2K,PNP0f13:PS2M] at 0x60,0x64 irq 1,12 serio: i8042 AUX port at 0x60,0x64 irq 12 serio: i8042 KBD port at 0x60,0x64 irq 1 Serial: 8250/16550 driver $Revision: 1.90 $ 76 ports, IRQ sharing enabled ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A io scheduler noop registered io scheduler anticipatory registered io scheduler deadline registered io scheduler cfq registered RAMDISK driver initialized: 16 RAM disks of 16384K size 1024 blocksize Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2 ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx Probing IDE interface ide0... hda: PLEXTOR DVDR PX-716A, ATAPI CD/DVD-ROM drive ide1: I/O resource 0x170-0x177 not free. ide1: ports already in use, skipping probe Probing IDE interface ide2... Probing IDE interface ide3... Probing IDE interface ide4... Probing IDE interface ide5... ide0 at 0x1f0-0x1f7,0x3f6 on irq 14 hda: ATAPI 40X DVD-ROM DVD-R CD-R/RW drive, 8192kB Cache Uniform CD-ROM driver Revision: 3.20 ide-floppy driver 0.99.newide usbmon: debugs is not available usbcore: registered new driver hiddev usbcore: registered new driver usbhid drivers/usb/input/hid-core.c: v2.01:USB HID core driver mice: PS/2 mouse device common for all mice md: md driver 0.90.1 MAX_MD_DEVS=256, MD_SB_DISKS=27 NET: Registered protocol family 2 IP: routing cache hash table of 8192 buckets, 128Kbytes TCP established hash table entries: 262144 (order: 10, 4194304 bytes) TCP bind hash table entries: 65536 (order: 7, 786432 bytes) TCP: Hash tables configured (established 262144 bind 65536) Initializing IPsec netlink socket NET: Registered protocol family 1 NET: Registered protocol family 17 ACPI wakeup devices: PCI0 CSAD HUB0 UAR1 USB0 USB1 USB2 USB3 USBE MODM ACPI: (supports S0 S1 S4 S5) Freeing unused kernel memory: 228k freed input: AT Translated Set 2 keyboard on isa0060/serio0 SCSI subsystem initialized libata version 1.11 loaded. ata_piix version 1.03 ata_piix: combined mode detected ACPI: PCI Interrupt 0000:00:1f.2[A] -> GSI 18 (level, low) -> IRQ 169 ata: 0x1f0 IDE port busy PCI: Setting latency timer of device 0000:00:1f.2 to 64 ata1: SATA max UDMA/133 cmd 0x170 ctl 0x376 bmdma 0xF008 irq 15 ata1: dev 0 cfg 49:2f00 82:74eb 83:7fea 84:4023 85:74e9 86:3c02 87:4023 88:203f ata1: dev 0 ATA, max UDMA/100, 241254720 sectors: lba48 ata1: dev 1 cfg 49:2f00 82:74eb 83:7fea 84:4023 85:74e9 86:3c02 87:4023 88:203f ata1: dev 1 ATA, max UDMA/100, 160836480 sectors: lba48 ata1: dev 0 configured for UDMA/100 ata1: dev 1 configured for UDMA/100 scsi0 : ata_piix Vendor: ATA Model: HDS722512VLSA80 Rev: V33O Type: Direct-Access ANSI SCSI revision: 05 SCSI device sda: 241254720 512-byte hdwr sectors (123522 MB) SCSI device sda: drive cache: write back SCSI device sda: 241254720 512-byte hdwr sectors (123522 MB) SCSI device sda: drive cache: write back sda: sda1 sda2 sda3 sda4 < sda5 > Attached scsi disk sda at scsi0, channel 0, id 0, lun 0 Vendor: ATA Model: HDS722580VLSA80 Rev: V32O Type: Direct-Access ANSI SCSI revision: 05 SCSI device sdb: 160836480 512-byte hdwr sectors (82348 MB) SCSI device sdb: drive cache: write back SCSI device sdb: 160836480 512-byte hdwr sectors (82348 MB) SCSI device sdb: drive cache: write back sdb: sdb1 Attached scsi disk sdb at scsi0, channel 0, id 1, lun 0 ieee1394: Initialized config rom entry `ip1394' ohci1394: $Rev: 1250 $ Ben Collins ACPI: PCI Interrupt 0000:03:02.0[A] -> GSI 18 (level, low) -> IRQ 169 ohci1394: fw-host0: OHCI-1394 1.1 (PCI): IRQ=[169] MMIO=[fa104000-fa1047ff] Ma x Packet=[2048] sbp2: $Rev: 1219 $ Ben Collins device-mapper: 4.4.0-ioctl (2005-01-12) initialised: dm-devel@redhat.com input: ImExPS/2 Generic Explorer Mouse on isa0060/serio1 cdrom: open failed. kjournald starting. Commit interval 5 seconds EXT3-fs: mounted filesystem with ordered data mode. SELinux: Disabled at runtime. SELinux: Unregistering netfilter hooks ieee1394: Node added: ID:BUS[0-00:1023] GUID[0010b92000afe64b] ieee1394: Host added: ID:BUS[0-01:1023] GUID[00508d0000f4320b] scsi1 : SCSI emulation for IEEE-1394 SBP-2 Devices ieee1394: sbp2: Logged into SBP-2 device ieee1394: Node 0-00:1023: Max speed [S400] - Max payload [2048] Vendor: Maxtor Model: OneTouch Rev: 0200 Type: Direct-Access ANSI SCSI revision: 06 SCSI device sdc: 320171008 512-byte hdwr sectors (163928 MB) sdc: cache data unavailable sdc: assuming drive cache: write through SCSI device sdc: 320171008 512-byte hdwr sectors (163928 MB) sdc: cache data unavailable sdc: assuming drive cache: write through sdc: sdc1 Attached scsi disk sdc at scsi1, channel 0, id 1, lun 0 Floppy drive(s): fd0 is 1.44M FDC 0 is a post-1991 82077 Intel(R) PRO/1000 Network Driver - version 6.0.54-k2-NAPI Copyright (c) 1999-2004 Intel Corporation. ACPI: PCI Interrupt 0000:02:01.0[A] -> GSI 18 (level, low) -> IRQ 169 PCI: Setting latency timer of device 0000:02:01.0 to 64 e1000: eth0: e1000_probe: Intel(R) PRO/1000 Network Connection ACPI: PCI Interrupt 0000:00:1f.5[B] -> GSI 17 (level, low) -> IRQ 177 PCI: Setting latency timer of device 0000:00:1f.5 to 64 intel8x0_measure_ac97_clock: measured 49800 usecs intel8x0: clocking to 48000 ACPI: PCI Interrupt 0000:00:1d.7[D] -> GSI 23 (level, low) -> IRQ 185 PCI: Setting latency timer of device 0000:00:1d.7 to 64 ehci_hcd 0000:00:1d.7: EHCI Host Controller ehci_hcd 0000:00:1d.7: new USB bus registered, assigned bus number 1 ehci_hcd 0000:00:1d.7: irq 185, io mem 0xfa200000 PCI: cache line size of 128 is not supported by device 0000:00:1d.7 ehci_hcd 0000:00:1d.7: USB 2.0 initialized, EHCI 1.00, driver 10 Dec 2004 hub 1-0:1.0: USB hub found hub 1-0:1.0: 8 ports detected USB Universal Host Controller Interface driver v2.2 ACPI: PCI Interrupt 0000:00:1d.0[A] -> GSI 16 (level, low) -> IRQ 193 PCI: Setting latency timer of device 0000:00:1d.0 to 64 uhci_hcd 0000:00:1d.0: UHCI Host Controller usb 1-2: new high speed USB device using ehci_hcd and address 2 hub 1-2:1.0: USB hub found hub 1-2:1.0: 4 ports detected uhci_hcd 0000:00:1d.0: new USB bus registered, assigned bus number 2 uhci_hcd 0000:00:1d.0: irq 193, io base 0x0000b000 hub 2-0:1.0: USB hub found hub 2-0:1.0: 2 ports detected ACPI: PCI Interrupt 0000:00:1d.1[B] -> GSI 19 (level, low) -> IRQ 201 PCI: Setting latency timer of device 0000:00:1d.1 to 64 uhci_hcd 0000:00:1d.1: UHCI Host Controller usb 1-2.4: new high speed USB device using ehci_hcd and address 3 uhci_hcd 0000:00:1d.1: new USB bus registered, assigned bus number 3 uhci_hcd 0000:00:1d.1: irq 201, io base 0x0000b400 hub 3-0:1.0: USB hub found hub 3-0:1.0: 2 ports detected ACPI: PCI Interrupt 0000:00:1d.2[C] -> GSI 18 (level, low) -> IRQ 169 PCI: Setting latency timer of device 0000:00:1d.2 to 64 uhci_hcd 0000:00:1d.2: UHCI Host Controller uhci_hcd 0000:00:1d.2: new USB bus registered, assigned bus number 4 uhci_hcd 0000:00:1d.2: irq 169, io base 0x0000b800 hub 4-0:1.0: USB hub found hub 4-0:1.0: 2 ports detected ACPI: PCI Interrupt 0000:00:1d.3[A] -> GSI 16 (level, low) -> IRQ 193 PCI: Setting latency timer of device 0000:00:1d.3 to 64 uhci_hcd 0000:00:1d.3: UHCI Host Controller uhci_hcd 0000:00:1d.3: new USB bus registered, assigned bus number 5 uhci_hcd 0000:00:1d.3: irq 193, io base 0x0000bc00 hub 5-0:1.0: USB hub found hub 5-0:1.0: 2 ports detected md: Autodetecting RAID arrays. md: autorun ... md: ... autorun DONE. Initializing USB Mass Storage driver... scsi2 : SCSI emulation for USB Mass Storage devices usb-storage: device found at 3 usb-storage: waiting for device to settle before scanning usbcore: registered new driver usb-storage USB Mass Storage support registered. ACPI: Power Button (FF) [PWRF] ibm_acpi: ec object not found EXT3 FS on dm-0, internal journal cdrom: open failed. kjournald starting. Commit interval 5 seconds EXT3 FS on sda2, internal journal EXT3-fs: mounted filesystem with ordered data mode. kjournald starting. Commit interval 5 seconds