Date: Fri, 13 Mar 1998 08:22:34 -0600 From: Karl Denninger <karl@mcs.net> To: hackers@FreeBSD.ORG Subject: System hang (!) with -CURRENT Message-ID: <19980313082234.32450@mcs.net>
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I have seen an odd problem twice this morning.
-CURRENT, current as of last night :-)
dmesg is:
Copyright (c) 1992-1998 FreeBSD Inc.
Copyright (c) 1982, 1986, 1989, 1991, 1993
The Regents of the University of California. All rights reserved.
FreeBSD 3.0-CURRENT #1: Fri Mar 13 06:56:09 CST 1998
karl@Codebase.mcs.net:/usr/src/sys/compile/MCS_WEB
Timecounter "i8254" frequency 1193182 Hz cost 3493 ns
Timecounter "TSC" frequency 199432942 Hz cost 288 ns
CPU: Pentium Pro (199.43-MHz 686-class CPU)
Origin = "GenuineIntel" Id = 0x619 Stepping=9
Features=0xfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV>
real memory = 134217728 (131072K bytes)
avail memory = 127594496 (124604K bytes)
Probing for devices on PCI bus 0:
Correcting Natoma config for non-SMP
chip0: <Intel 82440FX (Natoma) PCI and memory controller> rev 0x02 on pci0.0.0
chip1: <Intel 82371SB PCI to ISA bridge> rev 0x01 on pci0.7.0
ide_pci0: <Intel PIIX3 Bus-master IDE controller> rev 0x00 on pci0.7.1
de0: <Digital 21140A Fast Ethernet> rev 0x22 int a irq 10 on pci0.10.0
de0: SMC 9332BDT 21140A [10-100Mb/s] pass 2.2
de0: address 00:e0:29:09:9b:05
de1: <Digital 21140A Fast Ethernet> rev 0x22 int a irq 11 on pci0.11.0
de1: SMC 9332BDT 21140A [10-100Mb/s] pass 2.2
de1: address 00:e0:29:09:96:da
ahc0: <Adaptec 2940 Ultra SCSI host adapter> rev 0x00 int a irq 15 on pci0.12.0
ahc0: aic7880 Wide Channel, SCSI Id=7, 16 SCBs
ahc0: waiting for scsi devices to settle
scbus0 at ahc0 bus 0
ahc0: target 0 Tagged Queuing Device
sd0 at scbus0 target 0 lun 0
sd0: <QUANTUM XP32275W LXY4> type 0 fixed SCSI 2
sd0: Direct-Access 2170MB (4445380 512 byte sectors)
sd0: with 5899 cyls, 5 heads, and an average 150 sectors/track
vga0: <Cirrus Logic GD5446 SVGA controller> rev 0x00 on pci0.14.0
Probing for devices on the ISA bus:
sc0 at 0x60-0x6f irq 1 on motherboard
sc0: VGA color <16 virtual consoles, flags=0x0>
ed0 not found at 0x280
ed1 not found at 0x300
sio0 not found at 0x3f8
sio1 not found at 0x2f8
lpt0 not found
lpt1 not found
fdc0 at 0x3f0-0x3f7 irq 6 drq 2 on isa
fdc0: FIFO enabled, 8 bytes threshold
fd0: 1.44MB 3.5in
wdc0 not found at 0x1f0
aha0 not found at 0x330
aic0 not found at 0x340
npx0 on motherboard
npx0: INT 16 interface
ccd0-3: Concatenated disk drivers
changing root device to sd0s2a
WARNING: / was not properly dismounted.
de0: enabling 10baseT port
de1: enabling 10baseT port
This machine is one five running the same kernel and same software base
(in a fault-resistant environment).
It has been running with a kernel circa March 11th without incident for
more than two days.
Twice now in the last three hours it has locked up hard. Keyboard input is
not accepted (not even the NUM LOCK!) so dropping to DDB to find out where
it is hanging up is impossible.
Nothing else has changed at all.
I suspect an external "packet of death". One of our other systems was hit
with a sustained LAND attack attempt (which failed to kill it) minutes
before the first lockup incident on this system.
The commit logs say that the LAND attack vulnerability in -CURRENT was fixed
in January. I don't know... this particular sequence of events, one out of
five machines hit, and a different one on the same network hit (and logged)
minutes before this one locks up?
I'm suspicious. Is there anything outstanding in this area against
-CURRENT?
--
--
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