I'm getting some panics on a few FreeBSD 5.4 boxes, and I'm trying to figure out a way to get them to drop to some sort of debugger, or to dump core. It used to be that you'd just add:
options DDB options DDB_UNATTENDED and build a kernel with -g, set 'dumpon', and then when it paniced it would write it out to disk. For 5.4, I understand you also need "options KDB", and you need to replace DDB_UNATTENDED with KDB_UNATTENDED. I've done all of that, but the panic did not trigger a core dump, and did not leave me at a prompt (the latter probably because of KDB_UNATTENDED?). The panic message, in the present case, in case someone's seen this particular problem before: Fatal trap 12: page fault while in kernel mode. cpuid = 01; apic id = 06 fault virtual address = 0x24 fault code = supervisor read, page not present instruction pointer = 0x8:0xc035c7cf stack pointer = 0x10:0xeb858c74 frame pointer = 0x10:0xeb858c88 code segment = base 0x0, limit 0xfffff, type 0x1b = DPL 0, pres 1, def32 1, gran 1 processor eflags = resume, IOPL equal 0 current process = 8 (pagedaemon) Would this sort of panic prevent a dump from occuring? BTW: I have checked the handbook and haven't found the answer (it doesn't seem to mention KDB at all). Unfortunately the kernel buffer appears insufficient to store all the output from "boot -v", so I'm booting it with no flags. I've included the output of dmesg. Following that is the kernel's config. sysctl -a output is available at http://dpk.net/5.4-sysctl.txt (35KB) Copyright (c) 1992-2005 The FreeBSD Project. Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994 The Regents of the University of California. All rights reserved. FreeBSD 5.4-RELEASE-p5 #2: Sun Jul 31 20:58:46 PDT 2005 [EMAIL PROTECTED]:/usr/src/sys/i386/compile/STD-PAE MPTable: <INTEL LINDENHURST > Timecounter "i8254" frequency 1193182 Hz quality 0 CPU: Intel(R) Xeon(TM) CPU 3.00GHz (3000.12-MHz 686-class CPU) Origin = "GenuineIntel" Id = 0xf41 Stepping = 1 Features=0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE> Hyperthreading: 2 logical CPUs real memory = 4831838208 (4608 MB) avail memory = 4194848768 (4000 MB) FreeBSD/SMP: Multiprocessor System Detected: 2 CPUs cpu0 (BSP): APIC ID: 0 cpu1 (AP): APIC ID: 6 ioapic0: Assuming intbase of 0 ioapic1: Assuming intbase of 24 ioapic2: Assuming intbase of 48 ioapic3: Assuming intbase of 72 ioapic0 <Version 2.0> irqs 0-23 on motherboard ioapic1 <Version 2.0> irqs 24-47 on motherboard ioapic2 <Version 2.0> irqs 48-71 on motherboard ioapic3 <Version 2.0> irqs 72-95 on motherboard npx0: <math processor> on motherboard npx0: INT 16 interface cpu0 on motherboard cpu1 on motherboard pcib0: <MPTable Host-PCI bridge> pcibus 0 on motherboard pci0: <PCI bus> on pcib0 pcib1: <PCI-PCI bridge> irq 16 at device 2.0 on pci0 pci1: <PCI bus> on pcib1 pcib2: <PCI-PCI bridge> at device 0.0 on pci1 pci3: <PCI bus> on pcib2 pcib3: <MPTable PCI-PCI bridge> at device 0.2 on pci1 pci2: <PCI bus> on pcib3 3ware device driver for 9000 series storage controllers, version: 2.50.02.012 twa0: <3ware 9000 series Storage Controller> port 0xa800-0xa8ff mem 0xfb800000-0xfbffffff,0xfc8ffc00-0xfc8ffcff irq 72 at device 1.0 on pci2 twa0: 4 ports, Firmware FE9X 2.04.00.005, BIOS BE9X 2.03.01.047 pcib4: <PCI-PCI bridge> irq 16 at device 3.0 on pci0 pci4: <PCI bus> on pcib4 pcib5: <MPTable PCI-PCI bridge> at device 28.0 on pci0 pci5: <PCI bus> on pcib5 em0: <Intel(R) PRO/1000 Network Connection, Version - 1.7.35> port 0xbc00-0xbc3f mem 0xfc9e0000-0xfc9fffff irq 26 at device 1.0 on pci5 em0: Ethernet address: 00:30:48:83:0a:f8 em0: Speed:N/A Duplex:N/A em1: <Intel(R) PRO/1000 Network Connection, Version - 1.7.35> port 0xb800-0xb83f mem 0xfc9a0000-0xfc9bffff irq 27 at device 2.0 on pci5 em1: Ethernet address: 00:30:48:83:0a:f9 em1: Speed:N/A Duplex:N/A pci0: <serial bus, USB> at device 29.0 (no driver attached) pci0: <serial bus, USB> at device 29.1 (no driver attached) pci0: <base peripheral> at device 29.4 (no driver attached) pci0: <base peripheral, interrupt controller> at device 29.5 (no driver attached) pci0: <serial bus, USB> at device 29.7 (no driver attached) pcib6: <MPTable PCI-PCI bridge> at device 30.0 on pci0 pci6: <PCI bus> on pcib6 pci6: <display, VGA> at device 2.0 (no driver attached) isab0: <PCI-ISA bridge> at device 31.0 on pci0 isa0: <ISA bus> on isab0 atapci0: <Intel 6300ESB UDMA100 controller> port 0xfc00-0xfc0f,0x376,0x170-0x177,0x3f6,0x1f0-0x1f7 at device 31.1 on pci0 ata0: channel #0 on atapci0 ata1: channel #1 on atapci0 pci0: <serial bus, SMBus> at device 31.3 (no driver attached) orm0: <ISA Option ROMs> at iomem 0xca800-0xcb7ff,0xc9800-0xca7ff,0xc8000-0xc97ff,0xc0000-0xc7fff on isa0 pmtimer0 on isa0 atkbdc0: <Keyboard controller (i8042)> at port 0x64,0x60 on isa0 atkbd0: <AT Keyboard> irq 1 on atkbdc0 kbd0 at atkbd0 fdc0: <Enhanced floppy controller> at port 0x3f0-0x3f5 irq 6 drq 2 on isa0 fd0: <1440-KB 3.5" drive> on fdc0 drive 0 sc0: <System console> at flags 0x100 on isa0 sc0: VGA <16 virtual consoles, flags=0x300> 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 vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0 unknown: <PNP0501> can't assign resources (port) unknown: <PNP0501> can't assign resources (port) unknown: <PNP0700> can't assign resources (port) unknown: <PNP0c02> can't assign resources (port) unknown: <PNP0303> can't assign resources (port) Timecounters tick every 10.000 msec IP Filter: v3.4.35 initialized. Default = pass all, Logging = enabled ipfw2 initialized, divert disabled, rule-based forwarding disabled, default to accept, logging disabled acd0: DVDROM <MATSHITADVD-ROM SR-8178/PZ16> at ata1-slave PIO4 da0 at twa0 bus 0 target 0 lun 0 da0: <3ware Logical Disk 00 1.00> Fixed Direct Access SCSI-0 device da0: 100.000MB/s transfers da0: 762918MB (1562456064 512 byte sectors: 255H 63S/T 97258C) SMP: AP CPU #1 Launched! Mounting root from ufs:/dev/da0s1a em0: Link is up 100 Mbps Full Duplex #KERNEL CONFIGURATION FILE ident STD-PAE options PAE options SMP makeoptions "NO_MODULES=yes DEBUG=-g" options DDB options KDB options KDB_UNATTENDED #The following four lines are not found in the GENERIC file. options IPFILTER #ipfilter support options IPFILTER_LOG #ipfilter logging options IPFIREWALL #firewall options IPFIREWALL_DEFAULT_TO_ACCEPT #allow everything by default # The following lines, to the end of this file, were all taken verbatim # from the GENERIC file (though many lines from that file were excluded). machine i386 cpu I686_CPU # To statically compile in device wiring instead of /boot/device.hints #hints "GENERIC.hints" # Default places to look for devices. options SCHED_4BSD # 4BSD scheduler options INET # InterNETworking options FFS # Berkeley Fast Filesystem options SOFTUPDATES # Enable FFS soft updates support options UFS_ACL # Support for access control lists options UFS_DIRHASH # Improve performance on big directories options MD_ROOT # MD is a potential root device options NFSCLIENT # Network Filesystem Client options NFSSERVER # Network Filesystem Server options NFS_ROOT # NFS usable as /, requires NFSCLIENT options CD9660 # ISO 9660 Filesystem options PROCFS # Process filesystem (requires PSEUDOFS) options PSEUDOFS # Pseudo-filesystem framework options GEOM_GPT # GUID Partition Tables. options COMPAT_43 # Compatible with BSD 4.3 [KEEP THIS!] options COMPAT_FREEBSD4 # Compatible with FreeBSD4 options SCSI_DELAY=15000 # Delay (in ms) before probing SCSI options KTRACE # ktrace(1) support options SYSVSHM # SYSV-style shared memory options SYSVMSG # SYSV-style message queues options SYSVSEM # SYSV-style semaphores options _KPOSIX_PRIORITY_SCHEDULING # POSIX P1003_1B real-time extensions options KBD_INSTALL_CDEV # install a CDEV entry in /dev options ADAPTIVE_GIANT # Giant mutex is adaptive. options ASR_COMPAT # asr old ioctls support, needed by raidutils device apic # I/O APIC device carp # Bus support. Do not remove isa, even if you have no isa slots device isa device eisa device pci # Floppy drives device fdc # ATA and ATAPI devices device ata device atadisk # ATA disk drives device atapicd # ATAPI CDROM drives device atapifd # ATAPI floppy drives device atapist # ATAPI tape drives options ATA_STATIC_ID # Static device numbering # SCSI Controllers device ahc # AHA2940 and onboard AIC7xxx devices device ahd # AHA39320/29320 and onboard AIC79xx devices device mpt # LSI-Logic MPT-Fusion nodevice sym # NCR/Symbios Logic (newer chipsets + those of `ncr') # SCSI peripherals device scbus # SCSI bus (required for SCSI) device da # Direct Access (disks) device sa # Sequential Access (tape etc) device cd # CD device pass # Passthrough device (direct SCSI access) device ses # SCSI Environmental Services (and SAF-TE) # RAID controllers interfaced to the SCSI subsystem device amr # AMI MegaRAID device arcmsr # Areca SATA II RAID nodevice asr # DPT SmartRAID V, VI and Adaptec SCSI RAID device ciss # Compaq Smart RAID 5* nodevice dpt # DPT Smartcache III, IV - See NOTES for options nodevice iir # Intel Integrated RAID device ips # IBM (Adaptec) ServeRAID device twa # 3ware 9000 series PATA/SATA RAID # RAID controllers device aac # Adaptec FSA RAID device aacp # SCSI passthrough for aac (requires CAM) nodevice ida # Compaq Smart RAID device twe # 3ware ATA RAID # atkbdc0 controls both the keyboard and the PS/2 mouse device atkbdc # AT keyboard controller device atkbd # AT keyboard device psm # PS/2 mouse device vga # VGA video card driver # syscons is the default console driver, resembling an SCO console device sc nodevice agp # support several AGP chipsets # Floating point support - do not disable. device npx # Add suspend/resume support for the i8254. device pmtimer # Serial (COM) ports device sio # 8250, 16[45]50 based serial ports # If you've got a "dumb" serial or parallel PCI card that is # supported by the puc(4) glue driver, uncomment the following # line to enable it (connects to the sio and/or ppc drivers): device puc # PCI Ethernet NICs. device em # Intel PRO/1000 adapter Gigabit Ethernet Card device ixgb # Intel PRO/10GbE Ethernet Card # PCI Ethernet NICs that use the common MII bus controller code. # NOTE: Be sure to keep the 'device miibus' line in order to use these NICs! device miibus # MII bus support device bfe # Broadcom BCM440x 10/100 Ethernet device bge # Broadcom BCM570xx Gigabit Ethernet device fxp # Intel EtherExpress PRO/100B (82557, 82558) device xl # 3Com 3c90x (``Boomerang'', ``Cyclone'') # Pseudo devices. device loop # Network loopback device mem # Memory and kernel memory devices device io # I/O device device random # Entropy device device ether # Ethernet support device ppp # Kernel PPP device pty # Pseudo-ttys (telnet etc) device md # Memory "disks" # The `bpf' device enables the Berkeley Packet Filter. # Be aware of the administrative consequences of enabling this! device bpf # Berkeley packet filter # USB support nodevice uhci # UHCI PCI->USB interface nodevice ohci # OHCI PCI->USB interface nodevice usb # USB Bus (required) nodevice ugen # Generic nodevice uhid # "Human Interface Devices" nodevice ukbd # Keyboard nodevice umass # Disks/Mass storage - Requires scbus and da _______________________________________________ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"