6.3-PRERELEASE: interrupt storm detected on "irq11:"; throttling interrupt source, (irq11 is em0)

[Lev Serebryakov]

Hello, freebsd-stable.

 Upgrading my netwrok from 100Mbit to 1Gbit.

 I've replaced one of two fxp's with em (desktop varinat), and rebuild system.
 Right after booting TONS of messages about interrupt storm (without
 device name). irq11 is occuped by em0.

 uname -a
FreeBSD xxx.xxx.xxx 6.3-PRERELEASE FreeBSD 6.3-PRERELEASE #0: Thu Nov
15 19:19:26 MSK 2007     lev at xxx.xxx.xxx:/usr/obj/usr/src/sys/GATEWAY i386
 
 Here is dmesg.boot:

Copyright (c) 1992-2007 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 is a registered trademark of The FreeBSD Foundation.
FreeBSD 6.3-PRERELEASE #0: Thu Nov 15 19:19:26 MSK 2007
    lev at xxx.xxx.xxx:/usr/obj/usr/src/sys/GATEWAY
Copyright (c) 1992-2007 The FreeBSD Project.Timecounter "i8254" frequency 1193182 Hz quality 0
CPU: Pentium III/Pentium III Xeon/Celeron (551.25-MHz 686-class CPU)
  Origin = "GenuineIntel"  Id = 0x673  Stepping = 3
  Features=0x387f9ff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,PN,MMX,FXSR,SSE>
real memory  = 671072256 (639 MB)
avail memory = 647380992 (617 MB)
ath_hal: 0.9.20.3 (AR5210, AR5211, AR5212, RF5111, RF5112, RF2413, RF5413)
acpi0: <ASUS P3B_F> on motherboard
acpi0: Power Button (fixed)
Timecounter "ACPI-safe" frequency 3579545 Hz quality 850
acpi_timer0: <24-bit timer at 3.579545MHz> port 0xe408-0xe40b on acpi0
cpu0: <ACPI CPU> on acpi0
acpi_throttle0: <ACPI CPU Throttling> on cpu0
acpi_button0: <Power Button> on acpi0
pcib0: <ACPI Host-PCI bridge> port 0xcf8-0xcff on acpi0
pci0: <ACPI PCI bus> on pcib0
agp0: <Intel 82443BX (440 BX) host to PCI bridge> mem 0xe7000000-0xe7ffffff at device 0.0 on pci0
pcib1: <PCI-PCI bridge> at device 1.0 on pci0
pci1: <PCI bus> on pcib1
pci1: <display, VGA> at device 0.0 (no driver attached)
isab0: <PCI-ISA bridge> at device 4.0 on pci0
isa0: <ISA bus> on isab0
atapci0: <Intel PIIX4 UDMA33 controller> port 0x1f0-0x1f7,0x3f6,0x170-0x177,0x376,0xb800-0xb80f at device 4.1 on pci0
ata0: <ATA channel 0> on atapci0
ata1: <ATA channel 1> on atapci0
pci0: <serial bus, USB> at device 4.2 (no driver attached)
intpm0: <Intel 82371AB Power management controller> port 0xe800-0xe80f irq 9 at device 4.3 on pci0
intpm0: I/O mapped e800
intpm0: intr IRQ 9 enabled revision 0
intpm0: [GIANT-LOCKED]
intsmb0: <Intel PIIX4 SMBUS Interface> on intpm0
smbus1: <System Management Bus> on intsmb0
smb0: <SMBus generic I/O> on smbus1
intpm0: PM I/O mapped e400
ath0: <Atheros 5212> mem 0xe3800000-0xe380ffff irq 12 at device 10.0 on pci0
ath0: Ethernet address: 00:15:e9:40:61:59
ath0: mac 7.9 phy 4.5 radio 5.6
fxp0: <Intel 82558 Pro/100 Ethernet> port 0xb000-0xb01f mem 0xe5000000-0xe5000fff,0xe3000000-0xe30fffff irq 10 at device 11.0 on pci0
miibus0: <MII bus> on fxp0
inphy0: <i82555 10/100 media interface> on miibus0
inphy0:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
fxp0: Ethernet address: 00:50:8b:5d:ac:cb
em0: <Intel(R) PRO/1000 Network Connection Version - 6.7.2> port 0xa800-0xa83f mem 0xe2800000-0xe281ffff,0xe2000000-0xe201ffff irq 11 at device 12.0 on pci0
em0: Ethernet address: 00:07:e9:09:ed:f3
pci0: <simple comms> at device 13.0 (no driver attached)
ppc0: <ECP parallel printer port> port 0x378-0x37f,0x778-0x77b irq 7 drq 3 on acpi0
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
sio0: <16550A-compatible COM port> port 0x3f8-0x3ff irq 4 flags 0x10 on acpi0
sio0: type 16550A
sio1: <16550A-compatible COM port> port 0x2f8-0x2ff irq 3 on acpi0
sio1: type 16550A
atkbdc0: <Keyboard controller (i8042)> port 0x60,0x64 irq 1 on acpi0
atkbd0: <AT Keyboard> irq 1 on atkbdc0
kbd0 at atkbd0
atkbd0: [GIANT-LOCKED]
pmtimer0 on isa0
orm0: <ISA Option ROMs> at iomem 0xc0000-0xc7fff,0xc8000-0xc87ff,0xcc000-0xccfff on isa0
sc0: <System console> at flags 0x100 on isa0
sc0: VGA <16 virtual consoles, flags=0x300>
sio2 at port 0x3e8-0x3ef irq 5 on isa0
sio2: type 16550A
vga0: <Generic ISA VGA> at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0
Timecounter "TSC" frequency 551253671 Hz quality 800
Timecounters tick every 1.000 msec
interrupt storm detected on "irq11:"; throttling interrupt source
ad0: 76351MB <SAMSUNG SP0802N TK200-04> at ata0-master UDMA33
acd0: CDROM <CD-532E-B/3.0B> at ata1-master PIO4
Trying to mount root from ufs:/dev/ad0s1a
interrupt storm detected on "irq11:"; throttling interrupt source
interrupt storm detected on "irq11:"; throttling interrupt source
interrupt storm detected on "irq11:"; throttling interrupt source
interrupt storm detected on "irq11:"; throttling interrupt source
interrupt storm detected on "irq11:"; throttling interrupt source
ipfw2 initialized, divert loadable, rule-based forwarding disabled, default to deny, logging disabled
interrupt storm detected on "irq11:"; throttling interrupt source
interrupt storm detected on "irq11:"; throttling interrupt source
interrupt storm detected on "irq11:"; throttling interrupt source

-- 
// Black Lion AKA Lev Serebryakov <lev at serebryakov.spb.ru>