Date: Mon, 30 Aug 1999 10:43:03 -0700 (PDT) From: Suresh Rajagopalan <sraja@cinenet.net> To: Matthew Dillon <dillon@apollo.backplane.com> Cc: freebsd-smp@FreeBSD.ORG Subject: Re: SMP freezes on 3.2-STABLE Message-ID: <Pine.GSO.3.96.990830103058.21640A-100000@hermosa.cinenet.net> In-Reply-To: <199908291614.JAA06121@apollo.backplane.com>
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> If when a machine freezes up you are able to escape into DDB, run the
> 'trace' command and the 'ps' command prio to 'panic'ing the machine.
>
Hi:
a)
This time I was able to break into DDB. Here's the output (BTW, I had to
transcribe this, is there any way to dump the output to a file?)
-----------------------
panic rslock cpu #0 addr 0xcc848cb0 lock=0x00000001
mp_lock=0000000x, cpuid=0, lapic.id=010000000
Debugger panic, stopped at debugger 0x37, movl, $0_in debugger
----
b)
trace shows the following:
panic (c0241d25,0,cc848cb0,1,c01769d4) at panic 0xa4
bsl1 (cc848c40, 2, cbbe6860, cbe3043f, cc848d00) at bs1
nfs_lookup (cbf3de30, cbafce00, cbf3dedc, cbf3deb80) at nfs_lookup 0x22f
lookup(cbf3deb8,cbbe6860,cbbe6860,cbf3df94,cbf3de74) at lookup 0x2c1
namei(cbf3deb8,cbbe6860,c0292740,0,8162ce4) at namei 0x133
stat(cbbe6860,cbf3df94,13,5,bfbfdd50) at stat 0x44
syscall(27,bfbf0027,bfbfdd50,5,bfbfdb28) at syscall 0x107
Xint0x80_syscall() at Xint)x80_syscall + 0x4c
---
c)
ps shows a few http and perl processes, some in nfsrecv state. The
output was too long to copy by hand. Hope this helps.
--
d)
On one of the machines, I now also see this message in the syslog:
xl0: command never completed
(at random intervals)
e)
Also here is the output of /var/run/dmesg.boot
Copyright (c) 1992-1999 FreeBSD Inc.
Copyright (c) 1982, 1986, 1989, 1991, 1993
The Regents of the University of California. All rights reserved.
FreeBSD 3.2-STABLE #0: Thu Aug 26 10:40:37 PDT 1999
root@web2.mediasc.com:/usr/src/sys/compile/STABLE1
Timecounter "i8254" frequency 1193182 Hz
CPU: Pentium III (686-class CPU)
Origin = "GenuineIntel" Id = 0x672 Stepping = 2
Features=0x387fbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,<b18>,MMX,FXSR,<b25>>
real memory = 268435456 (262144K bytes)
avail memory = 257658880 (251620K bytes)
Programming 24 pins in IOAPIC #0
FreeBSD/SMP: Multiprocessor motherboard
cpu0 (BSP): apic id: 1, version: 0x00040011, at 0xfee00000
cpu1 (AP): apic id: 0, version: 0x00040011, at 0xfee00000
io0 (APIC): apic id: 2, version: 0x00170011, at 0xfec00000
Preloaded elf kernel "kernel" at 0xc0314000.
Probing for devices on PCI bus 0:
chip0: <Intel 82443BX host to PCI bridge> rev 0x03 on pci0.0.0
chip1: <Intel 82443BX host to AGP bridge> rev 0x03 on pci0.1.0
chip2: <Intel 82371AB PCI to ISA bridge> rev 0x02 on pci0.4.0
ide_pci0: <Intel PIIX4 Bus-master IDE controller> rev 0x01 on pci0.4.1
chip3: <Intel 82371AB Power management controller> rev 0x02 on pci0.4.3
xl0: <3Com 3c905B-TX Fast Etherlink XL> rev 0x30 int a irq 18 on pci0.10.0
xl0: Ethernet address: 00:50:04:7d:08:1b
xl0: autoneg complete, link status good (half-duplex, 10Mbps)
Probing for devices on PCI bus 1:
vga0: <ATI model 475a graphics accelerator> rev 0x7a int a irq 16 on pci1.0.0
Probing for devices on the ISA bus:
sc0 on isa
sc0: VGA color <16 virtual consoles, flags=0x0>
atkbdc0 at 0x60-0x6f on motherboard
atkbd0 irq 1 on isa
psm0 not found
sio0 at 0x3f8-0x3ff irq 4 flags 0x10 on isa
sio0: type 16550A
sio1 at 0x2f8-0x2ff irq 3 on isa
sio1: type 16550A
fdc0 at 0x3f0-0x3f7 irq 6 drq 2 on isa
fdc0: FIFO enabled, 8 bytes threshold
fd0: 1.44MB 3.5in
wdc0 at 0x1f0-0x1f7 irq 14 on isa
wdc0: unit 0 (wd0): <Maxtor 88400D8>
wd0: 8011MB (16408224 sectors), 16278 cyls, 16 heads, 63 S/T, 512 B/S
wdc0: unit 1 (atapi): <CD-ROM 40X/A/210>, removable, intr, dma, iordis
acd0: drive speed 0 - 5500KB/sec, 128KB cache
acd0: supported read types: CD-R, CD-RW, CD-DA, packet track
acd0: Audio: play, 255 volume levels
acd0: Mechanism: ejectable tray
acd0: Medium: no/blank disc inside, unlocked
wdc1 not found at 0x170
wt0 not found at 0x300
mcd0 not found at 0x300
scd0 not found at 0x230
ppc0 at 0x378 irq 7 on isa
ppc0: Generic chipset (NIBBLE-only) in COMPATIBLE mode
ppi0: <generic parallel i/o> on ppbus 0
plip0: <PLIP network interface> on ppbus 0
vga0 at 0x3b0-0x3df maddr 0xa0000 msize 131072 on isa
npx0 on motherboard
npx0: INT 16 interface
APIC_IO: Testing 8254 interrupt delivery
APIC_IO: routing 8254 via pin 2
changing root device to wd0s1a
SMP: AP CPU #1 Launched!
WARNING: / was not properly dismounted
Thanks for your help.
Suresh
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