swap_pager: indefinite wait buffer

Sun May 28 09:06:12 PDT 2006

HP ProLiant ML150, 6.1-STABLE, problem have persisted since 6.0-STABLE
Stops responding every one-two weeks, requires power cycling
Server is remote but went to see it today and the following message was 
printed on console repeatedly:
"swap_pager: indefinite wait buffer: bufobj: 0, blkno: 52, size: 4096"

Searching the list did not return a definitive answer, did not find a PR 
either.

Nothing logged
AFAIK the system hardly swaps at all

Is there a workaround for this? Should I assume it's a hw problem? 
Change DMA mode? Disable ACPI? Change to a scsi disk for system? I could 
accept slower performance if a tradeoff is required.

dmesg follows:

Copyright (c) 1992-2006 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 6.1-STABLE #0: Thu May 18 07:19:43 CEST 2006
     peo at stuffer.sth.starlight.se:/usr/obj/usr/src/sys/STUFFER
Timecounter "i8254" frequency 1193182 Hz quality 0
CPU: Intel(R) Xeon(TM) CPU 3.00GHz (2992.52-MHz 686-class CPU)
   Origin = "GenuineIntel"  Id = 0xf43  Stepping = 3

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>
   Features2=0x641d<SSE3,RSVD2,MON,DS_CPL,CNTX-ID,CX16,<b14>>
   AMD Features=0x20100000<NX,LM>
   Logical CPUs per core: 2
real memory  = 1073152000 (1023 MB)
avail memory = 1041211392 (992 MB)
MPTable: <INTEL    Tumwater    >
ioapic0: Assuming intbase of 0
ioapic1: Assuming intbase of 24
ioapic0 <Version 2.0> irqs 0-23 on motherboard
ioapic1 <Version 2.0> irqs 24-47 on motherboard
cpu0 on motherboard
pcib0: <MPTable Host-PCI bridge> pcibus 0 on motherboard
pci0: <PCI bus> on pcib0
pcib0: unable to route slot 2 INTA
pcib0: unable to route slot 3 INTA
pcib0: unable to route slot 29 INTB
pcib0: unable to route slot 29 INTD
pcib1: <PCI-PCI bridge> irq 10 at device 2.0 on pci0
pci1: <PCI bus> on pcib1
pcib2: <MPTable PCI-PCI bridge> irq 10 at device 3.0 on pci0
pci2: <PCI bus> on pcib2
bge0: <Broadcom BCM5721 Gigabit Ethernet, ASIC rev. 0x4101> mem 
0xdc100000-0xdc10ffff irq 16 at device 0.0 on pci2
miibus0: <MII bus> on bge0
brgphy0: <BCM5750 10/100/1000baseTX PHY> on miibus0
brgphy0:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, 1000baseTX, 
1000baseTX-FDX, auto
bge0: Ethernet address: 00:16:35:b1:32:0b
pcib3: <MPTable PCI-PCI bridge> at device 28.0 on pci0
pci3: <PCI bus> on pcib3
twe0: <3ware Storage Controller. Driver version 1.50.01.002> port 
0x2400-0x240f mem 0xdc800000-0xdcffffff irq 25 at device 2.0 on pci3
twe0: [GIANT-LOCKED]
twe0: 4 ports, Firmware FE8S 1.05.00.068, BIOS BE7X 1.08.00.048
atapci0: <Marvell 88SX6041 SATA300 controller> port 0x2000-0x20ff mem 
0xdc300000-0xdc3fffff irq 27 at device 4.0 on pci3
ata2: <ATA channel 0> on atapci0
ata3: <ATA channel 1> on atapci0
ata4: <ATA channel 2> on atapci0
ata5: <ATA channel 3> on atapci0
uhci0: <UHCI (generic) USB controller> port 0x1400-0x141f irq 16 at 
device 29.0 on pci0
uhci0: [GIANT-LOCKED]
usb0: <UHCI (generic) USB controller> on uhci0
usb0: USB revision 1.0
uhub0: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub0: 2 ports with 2 removable, self powered
uhci1: <UHCI (generic) USB controller> port 0x1420-0x143f irq 5 at 
device 29.1 on pci0
uhci1: [GIANT-LOCKED]
usb1: <UHCI (generic) USB controller> on uhci1
usb1: USB revision 1.0
uhub1: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub1: 2 ports with 2 removable, self powered
pci0: <base peripheral> at device 29.4 (no driver attached)
pci0: <base peripheral, interrupt controller> at device 29.5 (no driver 
attached)
ehci0: <Intel 6300ESB USB 2.0 controller> mem 0xdc001400-0xdc0017ff irq 
11 at device 29.7 on pci0
ehci0: [GIANT-LOCKED]
usb2: EHCI version 1.0
usb2: companion controllers, 2 ports each: usb0 usb1
usb2: <Intel 6300ESB USB 2.0 controller> on ehci0
usb2: USB revision 2.0
uhub2: Intel EHCI root hub, class 9/0, rev 2.00/1.00, addr 1
uhub2: 4 ports with 4 removable, self powered
pcib4: <MPTable PCI-PCI bridge> at device 30.0 on pci0
pci4: <PCI bus> on pcib4
pci4: <display, VGA> at device 4.0 (no driver attached)
isab0: <PCI-ISA bridge> at device 31.0 on pci0
isa0: <ISA bus> on isab0
atapci1: <Intel 6300ESB UDMA100 controller> port 
0x1f0-0x1f7,0x3f6,0x170-0x177,0x376,0x1440-0x144f at device 31.1 on pci0
ata0: <ATA channel 0> on atapci1
ata1: <ATA channel 1> on atapci1
pci0: <serial bus, SMBus> at device 31.3 (no driver attached)
pmtimer0 on isa0
orm0: <ISA Option ROMs> at iomem 
0xc0000-0xc7fff,0xc8000-0xc97ff,0xc9800-0xcdfff,0xce000-0xcefff,0xdc000-0xdffff 
on isa0
atkbdc0: <Keyboard controller (i8042)> at port 0x60,0x64 on isa0
atkbd0: <AT Keyboard> irq 1 on atkbdc0
kbd0 at atkbd0
atkbd0: [GIANT-LOCKED]
psm0: <PS/2 Mouse> irq 12 on atkbdc0
psm0: [GIANT-LOCKED]
psm0: model Generic PS/2 mouse, device ID 0
fdc0: <Enhanced floppy controller> at port 0x3f0-0x3f5,0x3f7 irq 6 drq 2 
on isa0
fdc0: [FAST]
fd0: <1440-KB 3.5" drive> on fdc0 drive 0
ppc0: <Parallel port> at port 0x378-0x37f irq 7 on isa0
ppc0: SMC-like chipset (ECP/EPP/PS2/NIBBLE) in COMPATIBLE mode
ppc0: FIFO with 16/16/9 bytes threshold
ppbus0: <Parallel port bus> on ppc0
plip0: <PLIP network interface> on ppbus0
lpt0: <Printer> on ppbus0
lpt0: Interrupt-driven port
ppi0: <Parallel I/O> on ppbus0
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: configured irq 3 not in bitmap of probed irqs 0
sio1: port may not be enabled
vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0
unknown: <PNP0c02> can't assign resources (memory)
unknown: <PNP0303> can't assign resources (port)
unknown: <PNP0c02> can't assign resources (memory)
unknown: <PNP0501> can't assign resources (port)
unknown: <PNP0401> can't assign resources (port)
unknown: <PNP0f13> can't assign resources (irq)
unknown: <PNP0700> can't assign resources (port)
Timecounter "TSC" frequency 2992517880 Hz quality 800
Timecounters tick every 1.000 msec
acd0: CDROM <TSSTcorp CD-ROM TS-H192C/B504> at ata0-master UDMA33
ad4: 152627MB <Maxtor 6V160E0 VA111630> at ata2-master SATA150
twed0: <Unit 0, RAID5, Normal> on twe0
twed0: 858563MB (1758337920 sectors)
Trying to mount root from ufs:/dev/ad4s1a
WARNING: / was not properly dismounted
WARNING: /tmp was not properly dismounted
WARNING: /usr was not properly dismounted
WARNING: /var was not properly dismounted
/var: mount pending error: blocks 4 files 1
WARNING: /home was not properly dismounted
bge0: link state changed to UP