This is 5.1-beta/i386 on an ALIX about five years old, running as my home server.
Recently, processes started to die for reasons unknown, as in pid 20260 (postgres): user write of 118784@0x28052000 at 159088 failed: 14 pid 1872 (cron): user write of 118784@0x2b1e3000 at 30224 failed: 14 14 is EFAULT as per sys/errno,h - what can be causing it? It usually happens under a stress (the machine is pretty scarse on resources, so 'stress' can be accepting a batch of DNS queries). For example, the postgres EFAULT above happened exactly when a batch of emails arrived. Is this a memory problem? My login.conf limits all classes to datasize-cur=100M. Can this be a memory HW problem? Jan OpenBSD 5.1-beta (GENERIC) #140: Sat Jan 21 00:40:23 MST 2012 dera...@i386.openbsd.org:/usr/src/sys/arch/i386/compile/GENERIC cpu0: Geode(TM) Integrated Processor by AMD PCS ("AuthenticAMD" 586-class) 432 MHz cpu0: FPU,DE,PSE,TSC,MSR,CX8,SEP,PGE,CMOV,CFLUSH,MMX,MMXX,3DNOW2,3DNOW real mem = 133758976 (127MB) avail mem = 121544704 (115MB) mainbus0 at root bios0 at mainbus0: AT/286+ BIOS, date 12/10/07, BIOS32 rev. 0 @ 0xfceb2 pcibios0 at bios0: rev 2.1 @ 0xf0000/0x10000 pcibios0: pcibios_get_intr_routing - function not supported pcibios0: PCI IRQ Routing information unavailable. pcibios0: PCI bus #0 is the last bus bios0: ROM list: 0xe0000/0xa800 cpu0 at mainbus0: (uniprocessor) pci0 at mainbus0 bus 0: configuration mode 1 (bios) pchb0 at pci0 dev 1 function 0 "AMD Geode LX" rev 0x31 glxsb0 at pci0 dev 1 function 2 "AMD Geode LX Crypto" rev 0x00: RNG AES vr0 at pci0 dev 9 function 0 "VIA VT6105M RhineIII" rev 0x96: irq 10, address 00:0d:b9:12:9f:2c ukphy0 at vr0 phy 1: Generic IEEE 802.3u media interface, rev. 3: OUI 0x004063, model 0x0034 vr1 at pci0 dev 10 function 0 "VIA VT6105M RhineIII" rev 0x96: irq 11, address 00:0d:b9:12:9f:2d ukphy1 at vr1 phy 1: Generic IEEE 802.3u media interface, rev. 3: OUI 0x004063, model 0x0034 vr2 at pci0 dev 11 function 0 "VIA VT6105M RhineIII" rev 0x96: irq 12, address 00:0d:b9:12:9f:2e ukphy2 at vr2 phy 1: Generic IEEE 802.3u media interface, rev. 3: OUI 0x004063, model 0x0034 ral0 at pci0 dev 12 function 0 "Ralink RT2560" rev 0x01: irq 9, address 00:11:09:0d:d3:36 ral0: MAC/BBP RT2560 (rev 0x04), RF RT2525 glxpcib0 at pci0 dev 15 function 0 "AMD CS5536 ISA" rev 0x03: rev 3, 32-bit 3579545Hz timer, watchdog, gpio gpio0 at glxpcib0: 32 pins pciide0 at pci0 dev 15 function 2 "AMD CS5536 IDE" rev 0x01: DMA, channel 0 wired to compatibility, channel 1 wired to compatibility wd0 at pciide0 channel 0 drive 0: <LEXAR ATA FLASH CARD> wd0: 1-sector PIO, LBA, 15263MB, 31260096 sectors wd0(pciide0:0:0): using PIO mode 4, Ultra-DMA mode 2 pciide0: channel 1 ignored (disabled) ohci0 at pci0 dev 15 function 4 "AMD CS5536 USB" rev 0x02: irq 15, version 1.0, legacy support ehci0 at pci0 dev 15 function 5 "AMD CS5536 USB" rev 0x02: irq 15 usb0 at ehci0: USB revision 2.0 uhub0 at usb0 "AMD EHCI root hub" rev 2.00/1.00 addr 1 isa0 at glxpcib0 isadma0 at isa0 com0 at isa0 port 0x3f8/8 irq 4: ns16550a, 16 byte fifo com0: console pcppi0 at isa0 port 0x61 spkr0 at pcppi0 npx0 at isa0 port 0xf0/16: reported by CPUID; using exception 16 usb1 at ohci0: USB revision 1.0 uhub1 at usb1 "AMD OHCI root hub" rev 1.00/1.00 addr 1 mtrr: K6-family MTRR support (2 registers) nvram: invalid checksum vscsi0 at root scsibus0 at vscsi0: 256 targets softraid0 at root scsibus1 at softraid0: 256 targets root on wd0a (5bea3261eefd6b7e.a) swap on wd0b dump on wd0b clock: unknown CMOS layout ral0: device timeout pid 20260 (postgres): user write of 118784@0x28052000 at 159088 failed: 14 pid 1872 (cron): user write of 118784@0x2b1e3000 at 30224 failed: 14