Date: Mon, 17 Jan 2000 20:50:42 -0500 (EST) From: dgilbert@velocet.ca To: FreeBSD-gnats-submit@freebsd.org Subject: kern/16165: Diskless machine panics swapping. Message-ID: <200001180150.UAA17871@strike.velocet.net>
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>Number: 16165 >Category: kern >Synopsis: Diskless machine panics during swap >Confidential: no >Severity: critical >Priority: high >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Mon Jan 17 18:00:01 PST 2000 >Closed-Date: >Last-Modified: >Originator: David Gilbert >Release: FreeBSD 4.0-CURRENT i386 >Organization: Velocet Communications >Environment: Diskless client and server both running the same 4.0 CURRENT, cvsup'd this week. Diskless kernel configuration follows, as does the dmesg. A 256M file on the server is being swapped to. Copyright (c) 1992-2000 The FreeBSD Project. Copyright (c) 1982, 1986, 1989, 1991, 1993 The Regents of the University of California. All rights reserved. FreeBSD 4.0-CURRENT #8: Sun Jan 16 23:32:25 EST 2000 root@strike.velocet.net:/usr/src/sys/compile/DISKLESS Timecounter "i8254" frequency 1193182 Hz CPU: AMD-K6tm w/ multimedia extensions (225.00-MHz 586-class CPU) Origin = "AuthenticAMD" Id = 0x562 Stepping = 2 Features=0x8001bf<FPU,VME,DE,PSE,TSC,MSR,MCE,CX8,MMX> AMD Features=0x400<<b10>> real memory = 67108864 (65536K bytes) avail memory = 62459904 (60996K bytes) md0: Malloc disk npx0: <math processor> on motherboard npx0: INT 16 interface pcib0: <Host to PCI bridge> on motherboard pci0: <PCI bus> on pcib0 pcib1: <PCI to PCI bridge (vendor=1106 device=8597)> at device 1.0 on pci0 pci1: <PCI bus> on pcib1 vga-pci0: <S3 model 8a13 graphics accelerator> mem 0xd8000000-0xdbffffff at device 0.0 on pci1 isab0: <VIA 82C586 PCI-ISA bridge> at device 7.0 on pci0 isa0: <ISA bus> on isab0 ata-pci0: <VIA 82C586 ATA-33 controller> port 0xf400-0xf40f at device 7.1 on pci0 ata-pci0: Busmastering DMA supported pci0: VIA 83C572 USB controller (vendor=0x1106, dev=0x3038) at 7.2 irq 11 chip1: <VIA 82C586B ACPI interface> at device 7.3 on pci0 ed0: <NE2000 PCI Ethernet (RealTek 8029)> port 0xf600-0xf61f irq 9 at device 10.0 on pci0 ed0: address 00:60:67:08:cf:ae, type NE2000 (16 bit) devclass_alloc_unit: ed0 already exists, using next available unit number fdc0: <NEC 72065B or clone> at port 0x3f0-0x3f5,0x3f7 irq 6 drq 2 on isa0 fdc0: FIFO enabled, 8 bytes threshold fd0: <1440-KB 3.5" drive> on fdc0 drive 0 atkbdc0: <keyboard controller (i8042)> at port 0x60-0x6f on isa0 atkbd0: <AT Keyboard> irq 1 on atkbdc0 vga0: <Generic ISA VGA> at port 0x3b0-0x3df iomem 0xa0000-0xbffff on isa0 sc0: <System console> on isa0 sc0: VGA <12 virtual consoles, flags=0x200> sio0 at port 0x3f8-0x3ff irq 4 flags 0x10 on isa0 sio0: type 16550A sio1 at port 0x2f8-0x2ff irq 3 on isa0 sio1: type 16550A unknown: <PNP0000> can't assign resources unknown0: <PNP0200> at port 0-0xf,0x81-0x83,0x87,0x89-0x8b,0x8f-0x91,0xc0-0xdf drq 4 on isa0 unknown1: <PNP0100> at port 0x40-0x43 irq 0 on isa0 unknown2: <PNP0b00> at port 0x70-0x71 irq 8 on isa0 unknown: <PNP0303> can't assign resources unknown: <PNP0800> can't assign resources unknown3: <PNP0c04> at port 0xf0-0xff irq 13 on isa0 unknown4: <PNP0c01> at iomem 0xe0000-0xfffff,0-0x9ffff,0xfffe0000-0xffffffff,0x100000-0x3ffffff on isa0 unknown5: <PNP0a03> at port 0x4d0-0x4d1,0xcf8-0xcff,0x480-0x48f,0x6000-0x607f,0x6080-0x60ff on isa0 unknown: <PNP0501> can't assign resources unknown: <PNP0700> can't assign resources unknown6: <PNP0400> at port 0x378-0x37f,0x778-0x77b irq 7 on isa0 unknown: <PNP0501> can't assign resources bootpc_init: wired to interface 'ed0' bootpc_init: using network interface 'ed0' Bootpc testing starting bootpc hw address is 0:60:67:8:cf:ae My ip address is <ip address>.35 Server ip address is <ip address>.34 Gateway ip address is 0.0.0.0 boot file is /tftpboot/kernel.debug Subnet mask is 255.255.255.240 Router is <ip address>.33 rootfs is <ip address>.34:/u4/repeat swapfs is <ip address>.34:/u4 Ignoring field type 15 md_lookup_swap: Swap size is 262144 KB Mounting root from nfs: NFS ROOT: <ip address>.34:/u4/repeat NFS SWAP: <ip address>.34:/u4 # # GENERIC -- Generic machine with WD/AHx/NCR/BTx family disks # # For more information on this file, please read the handbook section on # Kernel Configuration Files: # # http://www.freebsd.org/handbook/kernelconfig-config.html # # The handbook is also available locally in /usr/share/doc/handbook # if you've installed the doc distribution, otherwise always see the # FreeBSD World Wide Web server (http://www.FreeBSD.ORG/) for the # latest information. # # An exhaustive list of options and more detailed explanations of the # device lines is also present in the ./LINT configuration file. If you are # in doubt as to the purpose or necessity of a line, check first in LINT. # # $FreeBSD: src/sys/i386/conf/GENERIC,v 1.219 1999/12/23 05:32:53 wpaul Exp $ machine i386 #cpu I386_CPU #cpu I486_CPU cpu I586_CPU #cpu I686_CPU ident GENERIC maxusers 32 makeoptions DEBUG=-g #Build kernel with gdb(1) debug symbols #options MATH_EMULATE #Support for x87 emulation options INET #InterNETworking #options FFS #Berkeley Fast Filesystem #options FFS_ROOT #FFS usable as root device [keep this!] options MFS #Memory Filesystem options MD_ROOT #MD is a potential root device options NFS #Network Filesystem options NFS_ROOT #NFS usable as root device, "NFS" req'ed #options MSDOSFS #MSDOS Filesystem #options CD9660 #ISO 9660 Filesystem #options CD9660_ROOT #CD-ROM usable as root. "CD9660" req'ed options PROCFS #Process filesystem options COMPAT_43 #Compatible with BSD 4.3 [KEEP THIS!] options SCSI_DELAY=2000 #Be pessimistic about Joe SCSI device options UCONSOLE #Allow users to grab the console options USERCONFIG #boot -c editor options VISUAL_USERCONFIG #visual boot -c editor options KTRACE #ktrace(1) syscall trace support options SYSVSHM #SYSV-style shared memory options SYSVMSG #SYSV-style message queues options SYSVSEM #SYSV-style semaphores # To make an SMP kernel, the next two are needed #options SMP # Symmetric MultiProcessor Kernel #options APIC_IO # Symmetric (APIC) I/O # Optionally these may need tweaked, (defaults shown): #options NCPU=2 # number of CPUs #options NBUS=4 # number of busses #options NAPIC=1 # number of IO APICs #options NINTR=24 # number of INTs controller isa0 #controller eisa0 controller pci0 # Floppy drives controller fdc0 at isa? port IO_FD1 irq 6 drq 2 device fd0 at fdc0 drive 0 device fd1 at fdc0 drive 1 # ATA and ATAPI devices controller ata0 at isa? port IO_WD1 irq 14 controller ata1 at isa? port IO_WD2 irq 15 controller ata2 device atadisk0 # ATA disk drives device atapicd0 # ATAPI CDROM drives device atapifd0 # ATAPI floppy drives device atapist0 # ATAPI tape drives options ATA_STATIC_ID #Static device numbering #options ATA_ENABLE_ATAPI_DMA #Enable DMA on ATAPI devices # ata0 doesn't appear to work for us. #controller wdc0 at isa? port IO_WD1 irq 14 #device wd0 at wdc0 drive 0 #device wd1 at wdc0 drive 1 #controller wdc1 at isa? port IO_WD2 irq 15 #device wd2 at wdc1 drive 0 #device wd3 at wdc1 drive 1 # SCSI Controllers # A single entry for any of these controllers (ahb, ahc, amd, ncr, etc...) is # sufficient for any number of installed devices. #controller ahb0 # EISA AHA1742 family #controller ahc0 # AHA2940 and onboard AIC7xxx devices #controller amd0 # AMD 53C974 (Teckram DC-390(T)) #controller dpt0 # DPT Smartcache - See LINT for options! #controller isp0 # Qlogic family #controller ncr0 # NCR/Symbios Logic #controller sym0 # NCR/Symbios Logic (newer chipsets) #controller adv0 at isa? port ? irq ? #controller adw0 #controller bt0 at isa? port ? irq ? #controller aha0 at isa? port ? irq ? #controller aic0 at isa? port ? irq ? # SCSI peripherals # Only one of each of these is needed, they are dynamically allocated. #controller scbus0 # SCSI bus (required) #device da0 # Direct Access (disks) #device sa0 # Sequential Access (tape etc) #device cd0 # CD #device pass0 # Passthrough device (direct SCSI access) # RAID controllers #device amr0 # AMI MegaRAID #device mlx0 # Mylex DAC960 family # atkbdc0 controls both the keyboard and the PS/2 mouse controller atkbdc0 at isa? port IO_KBD device atkbd0 at atkbdc? irq 1 #device psm0 at atkbdc? irq 12 device vga0 at isa? port ? conflicts # splash screen/screen saver pseudo-device splash # syscons is the default console driver, resembling an SCO console device sc0 at isa? # Enable this and PCVT_FREEBSD for pcvt vt220 compatible console driver #device vt0 at isa? #options XSERVER # support for X server #options FAT_CURSOR # start with block cursor # If you have a ThinkPAD, uncomment this along with the rest of the PCVT lines #options PCVT_SCANSET=2 # IBM keyboards are non-std # Floating point support - do not disable. device npx0 at nexus? port IO_NPX irq 13 # Power management support (see LINT for more options) device apm0 at nexus? disable flags 0x20 # Advanced Power Management # PCCARD (PCMCIA) support #controller card0 #device pcic0 at isa? #device pcic1 at isa? # Serial (COM) ports device sio0 at isa? port IO_COM1 flags 0x10 irq 4 device sio1 at isa? port IO_COM2 irq 3 #device sio2 at isa? disable port IO_COM3 irq 5 #device sio3 at isa? disable port IO_COM4 irq 9 # Parallel port #device ppc0 at isa? port? flags 0x40 irq 7 #controller ppbus0 # Parallel port bus (required) #device lpt0 # Printer #device plip0 # TCP/IP over parallel #device ppi0 # Parallel port interface device #controller vpo0 # Requires scbus and da0 # PCI Ethernet NICs. #device de0 # DEC/Intel DC21x4x (``Tulip'') #device fxp0 # Intel EtherExpress PRO/100B (82557, 82558) #device tx0 # SMC 9432TX (83c170 ``EPIC'') #device vx0 # 3Com 3c590, 3c595 (``Vortex'') # PCI Ethernet NICs that use the common MII bus controller code. #controller miibus0 # MII bus support #device dc0 # DEC/Intel 21143 and various workalikes #device rl0 # RealTek 8129/8139 #device sf0 # Adaptec AIC-6915 (``Starfire'') #device sis0 # Silicon Integrated Systems SiS 900/SiS 7016 #device ste0 # Sundance ST201 (D-Link DFE-550TX) #device tl0 # Texas Instruments ThunderLAN #device vr0 # VIA Rhine, Rhine II #device wb0 # Winbond W89C840F #device xl0 # 3Com 3c90x (``Boomerang'', ``Cyclone'') # ISA Ethernet NICs. device ed0 at isa? port 0x280 irq 10 iomem 0xd8000 #device ex0 at isa? port? irq? # NOTE: This removes the isa attachment so that the pccard unit numbers # come out right. #device ep0 # WaveLAN/IEEE 802.11 wireless NICs. Note: the WaveLAN/IEEE really # exists only as a PCMCIA device, so there is no ISA attatement needed # and resources will always be dynamically assigned by the pccard code. #device wi0 # The probe order of these is presently determined by i386/isa/isa_compat.c. #device ie0 at isa? port 0x300 irq 10 iomem 0xd0000 #device fe0 at isa? port 0x300 irq ? #device le0 at isa? port 0x300 irq 5 iomem 0xd0000 #device lnc0 at isa? port 0x280 irq 10 drq 0 #device cs0 at isa? port 0x300 irq ? #device sn0 at isa? port 0x300 irq 10 # requires PCCARD (PCMCIA) support to be activated #device xe0 at isa? port? irq ? # Pseudo devices - the number indicates how many units to allocated. pseudo-device loop # Network loopback pseudo-device ether # Ethernet support #pseudo-device sl 1 # Kernel SLIP #pseudo-device ppp 1 # Kernel PPP #pseudo-device tun # Packet tunnel. pseudo-device pty # Pseudo-ttys (telnet etc) pseudo-device md # Memory "disks" # The `bpf' pseudo-device enables the Berkeley Packet Filter. # Be aware of the administrative consequences of enabling this! pseudo-device bpf #Berkeley packet filter # USB support #controller uhci0 # UHCI PCI->USB interface #controller ohci0 # OHCI PCI->USB interface #controller usb0 # USB Bus (required) #device ugen0 # Generic #device uhid0 # "Human Interface Devices" #device ukbd0 # Keyboard #device ulpt0 # Printer #controller umass0 # Disks/Mass storage - Requires scbus and da0 #device ums0 # Mouse pseudo-device vn #pseudo-device snp 4 options INCLUDE_CONFIG_FILE options USER_LDT options MAXCONS=12 options SC_HISTORY_SIZE=200 device pcm0 options PNPBIOS #options IPFIREWALL #firewall #options IPFIREWALL_VERBOSE #print information about # dropped packets #options IPFIREWALL_FORWARD #enable transparent proxy support #options IPFIREWALL_VERBOSE_LIMIT=100 #limit verbosity #options IPFIREWALL_DEFAULT_TO_ACCEPT #allow everything by default #options IPDIVERT #divert sockets #options IPFILTER #ipfilter support #options IPFILTER_LOG #ipfilter logging #options IPSTEALTH #support for stealth forwarding #options TCPDEBUG #options TCP_DROP_SYNFIN #drop TCP packets with SYN+FIN #options TCP_RESTRICT_RST #restrict emission of TCP RST #options ICMP_BANDLIM #options DUMMYNET #options BRIDGE options BOOTP # Use BOOTP to obtain IP address/hostname options BOOTP_NFSROOT # NFS mount root filesystem using BOOTP info options BOOTP_NFSV3 # Use NFS v3 to NFS mount root options BOOTP_COMPAT # Workaround for broken bootp daemons. options BOOTP_WIRED_TO=ed0 # Use interface fxp0 for BOOTP #options NULLFS #options UNION options DDB >Description: Machine will panic often. The signature of the panic that I have recorded is the following: fatal trap 12: page fault in kernel mode curproc: pagedaemon interupt mask: net bio cam vn_todev+0x6: movl 0x48(%edx),%eax (edx and eax are 0x0) pbgetvp+0x1a swap_pageer_putpages+0x32b ufs_vnoperatespec+0x7f vm_pageout_flush+0x92 vm_page_bits+0x202 vm_pageout_page_free+0x49e vm_opageout_page_free+0xd8c fork_trampoline+0x8 I think the vm_pageout_page_free looks suspicious --- that function doesn't look big enough to have such offsets. fork_trampoline looks like particularly difficult magic. I don't know exactly where I should be heading to track this one down, but I can reproduce it several times a day on a small diskless machine. >How-To-Repeat: Boot machine, run X, wait. >Fix: None known. >Release-Note: >Audit-Trail: >Unformatted: To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-bugs" in the body of the message
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