this machine hasn't been busy lately and it panicked today. it's running 3.9 release w/ the MP kernel. serial consoles make this sort of stuff nice and easy to report. i don't see anything enlightening in the logs.
here's the panic message, ps and trace, resp.: pool_put: namei: page header missing PID PPID PGRP UID S FLAGS WAIT COMMAND *26782 15238 15238 0 7 0x2200004 sh 15238 13245 15238 0 3 0x2004084 pause sh 13245 20172 20172 0 3 0x2000084 piperd cron 2524 1 2524 0 3 0x2040184 select sendmail 29008 1 29008 0 3 0x2004086 ttyin getty 4363 1 4363 0 3 0x2004086 ttyin getty 2908 1 2908 0 3 0x2004086 ttyin getty 11310 1 11310 0 3 0x2004086 ttyin getty 25717 1 25717 0 3 0x2004086 ttyin getty 3044 1 3044 0 3 0x2004086 ttyin getty 20172 1 20172 0 3 0x2000084 select cron 17384 1 17384 0 3 0x2000084 select sshd 19493 1 19493 0 3 0x2000184 select inetd 303 1068 1068 83 3 0x2000184 poll ntpd 1068 1 1068 0 3 0x2000084 poll ntpd 27283 21329 21329 73 3 0x2000184 poll syslogd 21329 1 21329 0 3 0x2000084 netio syslogd 12 0 0 0 3 0x2100204 crypto_wa crypto 11 0 0 0 3 0x2100204 aiodoned aiodoned 10 0 0 0 3 0x2100204 syncer update 9 0 0 0 3 0x2100204 cleaner cleaner 8 0 0 0 3 0x100204 reaper reaper 7 0 0 0 3 0x2100204 pgdaemon pagedaemon 6 0 0 0 3 0x2100204 pftm pfpurge 5 0 0 0 3 0x2100204 usbtsk usbtask 4 0 0 0 3 0x2100204 usbevt usb0 3 0 0 0 3 0x2100204 timeout sensors 2 0 0 0 3 0x2100204 kmalloc kmthread 1 0 1 0 3 0x2004084 wait init 0 -1 0 0 3 0x2080204 scheduler swapper Debugger(d05b0a40,d6b33ccc,0,d05f11e0,d6b33ccc) at Debugger+0x4 panic(d0521b00,d051ef45,d6a5f878,0,0) at panic+0x63 pool_do_put(d05f11e0,d6b33ccc,400,e82e9d70,d6a5f878) at pool_do_put+0x16b namei(e82e9d58,f9,d1189a00,0) at namei+0x394 check_exec(d6a5f878,e82e9da8,0,d6a5f878) at check_exec+0x23 sys_execve(d6a5f878,e82e9f68,e82e9f58,29,14) at sys_execve+0x128 syscall() at syscall+0x336 --- syscall (number 59) --- 0x1c02379d: dmesg: OpenBSD 3.9 (GENERIC.MP) #598: Thu Mar 2 02:37:06 MST 2006 [EMAIL PROTECTED]:/usr/src/sys/arch/i386/compile/GENERIC.MP cpu0: AMD Athlon(tm) MP 2200+ ("AuthenticAMD" 686-class, 256KB L2 cache) 1.80 GHz cpu0: FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,MMX,FXSR,SSE real mem = 535924736 (523364K) avail mem = 481947648 (470652K) using 4278 buffers containing 26898432 bytes (26268K) of memory mainbus0 (root) bios0 at mainbus0: AT/286+(33) BIOS, date 08/05/03, BIOS32 rev. 0 @ 0xfd6b0 apm0 at bios0: Power Management spec V1.2 apm0: AC on, battery charge unknown apm0: flags 30102 dobusy 0 doidle 1 pcibios0 at bios0: rev 2.1 @ 0xfd6b0/0x950 pcibios0: PCI BIOS has 13 Interrupt Routing table entries pcibios0: PCI Interrupt Router at 000:07:0 ("AMD 768 Power" rev 0x00) pcibios0: PCI bus #2 is the last bus bios0: ROM list: 0xc0000/0xa800 0xca800/0x800 0xcb000/0x4000 0xe0000/0x4000! mainbus0: Intel MP Specification (Version 1.4) (TYAN PAULANER ) cpu0 at mainbus0: apid 1 (boot processor) cpu0: AMD Powernow: TS cpu0: apic clock running at 266 MHz cpu1 at mainbus0: apid 0 (application processor) cpu1: AMD Athlon(tm) MP 2200+ ("AuthenticAMD" 686-class, 256KB L2 cache) 1.80 GHz cpu1: FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,MMX,FXSR,SSE mainbus0: bus 0 is type PCI mainbus0: bus 1 is type PCI mainbus0: bus 2 is type PCI mainbus0: bus 3 is type ISA ioapic0 at mainbus0: apid 2 pa 0xfec00000, version 11, 24 pins pci0 at mainbus0 bus 0: configuration mode 1 (no bios) pchb0 at pci0 dev 0 function 0 "AMD 762 PCI" rev 0x11 ppb0 at pci0 dev 1 function 0 "AMD 762 PCI-PCI" rev 0x00 pci1 at ppb0 bus 1 vga1 at pci1 dev 5 function 0 "NVIDIA GeForce2 MX 100" rev 0xb2 wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation) wsdisplay0: screen 1-5 added (80x25, vt100 emulation) pcib0 at pci0 dev 7 function 0 "AMD 768 ISA" rev 0x05 pciide0 at pci0 dev 7 function 1 "AMD 768 IDE" rev 0x04: DMA, channel 0 configured to compatibility, channel 1 configured to compatibility pciide0: channel 0 disabled (no drives) pciide0: channel 1 disabled (no drives) amdpm0 at pci0 dev 7 function 3 "AMD 768 Power" rev 0x03: rng active iic0 at amdpm0 lm1 at iic0 addr 0x2c: W83627HF lm2 at iic0 addr 0x2d: W83782D mpt0 at pci0 dev 9 function 0 "Symbios Logic 53c1030" rev 0xc1: apic 2 int 17 (irq 5) scsibus0 at mpt0: 16 targets sd0 at scsibus0 targ 6 lun 0: <MAXTOR, ATLAS15K2_36WLS, JNZH> SCSI3 0/direct fixed sd0: 35074MB, 48242 cyl, 2 head, 744 sec, 512 bytes/sec, 71833096 sec total mpt0: target 6 Synchronous at 160MHz width 16bit offset 127 QAS 1 DT 1 IU 1 ppb1 at pci0 dev 16 function 0 "AMD 768 PCI-PCI" rev 0x05 pci2 at ppb1 bus 2 ohci0 at pci2 dev 0 function 0 "AMD 768 USB" rev 0x07: apic 2 int 19 (irq 10), version 1.0, legacy support usb0 at ohci0: USB revision 1.0 uhub0 at usb0 uhub0: AMD OHCI root hub, rev 1.00/1.00, addr 1 uhub0: 4 ports with 4 removable, self powered xl0 at pci2 dev 8 function 0 "3Com 3c905C 100Base-TX" rev 0x78: apic 2 int 19 (irq 10), address 00:e0:81:26:14:b7 exphy0 at xl0 phy 24: 3Com internal media interface isa0 at pcib0 isadma0 at isa0 pckbc0 at isa0 port 0x60/5 pckbd0 at pckbc0 (kbd slot) pckbc0: using irq 1 for kbd slot wskbd0 at pckbd0: console keyboard, using wsdisplay0 pcppi0 at isa0 port 0x61 midi0 at pcppi0: <PC speaker> spkr0 at pcppi0 lpt0 at isa0 port 0x378/4 irq 7 npx0 at isa0 port 0xf0/16: using exception 16 pccom0 at isa0 port 0x3f8/8 irq 4: ns16550a, 16 byte fifo pccom0: console pccom1 at isa0 port 0x2f8/8 irq 3: ns16550a, 16 byte fifo fdc0 at isa0 port 0x3f0/6 irq 6 drq 2 biomask 0 netmask 0 ttymask 0 ioapic0: pin 19 shares different IPL interrupts (40..50), degraded performance pctr: user-level cycle counter enabled mtrr: Pentium Pro MTRR support apm0: disconnected dkcsum: sd0 matches BIOS drive 0x80 root on sd0a rootdev=0x400 rrootdev=0xd00 rawdev=0xd02 WARNING: / was not properly unmounted cpu1: AMD Powernow: TS panic: pool_put: namei: page header missing Stopped at Debugger+0x4: leave RUN AT LEAST 'trace' AND 'ps' AND INCLUDE OUTPUT WHEN REPORTING THIS PANIC! DO NOT EVEN BOTHER REPORTING THIS WITHOUT INCLUDING THAT INFORMATION!