I have been encountering a kernel panic in 2.2.14 that I believe is due to
a SCSI bug. I can useually make it crash by logging into X, as im running
GNOME the magicdev deamon starts and interrogates my SCSI CD-RW drive and
causes things to freak out. This only seems to work half the time, mind,
and I have uptimes ranging from 5 (login, boom) minutes to 13hrs
(although a good 5 of those hours were when the box was pretty much
unused). I find that logging into/out of X and generally attacking my CD
drive eventually causes something to happen though.
Also, on bootup I get some messages telling me about an unexpected IO-APIC
and that I should email linux-smp. Is this something I should really worry
about, and if so, could it be a factor in this crash?
The output of the crash is always along these lines:
(scsi0:-1:-1:-1) referenced SCB 0 not valid during SELTO
SCSI SEG = 0x5a SEQ ADDR =0x8 SSTAT = 0x10 SSTAT1 = 0x8a
(note: this bit fills the console until the kernel panic below happens.
Sometimes the kernel panic never happens and I merely have to reboot
because my system starts to grind to a halt and all my virtual terminals
are useless because they are filled with this.)
Unable to handle kernel NULL pointer dereference at virtual address
00000040
<insert lots of cpu registers and stacks etc, the Oops code was 0000 btw
so I presume that means there was no oops?>
Aiee, killing interrupt handler
Kernel panic: Attempting to kill the idle task
In swapper task - not syncing
Kernel version:
Linux version 2.2.14 ([EMAIL PROTECTED]) (gcc version
egcs-2.91.66 19990314/Linux (egcs-1.1.2 release)) #4 SMP Thu Mar 2
08:05:25 GMT 2000
ver_linux:
-- Versions installed: (if some fields are empty or looks
-- unusual then possibly you have very old versions)
Linux terri.jives.demon.co.uk 2.2.14 #4 SMP Thu Mar 2 08:05:25 GMT 2000
i686 unknown
Kernel modules 2.3.7
Gnu C egcs-2.91.66
Binutils 2.9.1.0.24
Linux C Library 2.1.2
Dynamic linker ldd (GNU libc) 2.1.2
Procps 2.0.4
Mount 2.9u
Net-tools 1.53
Console-tools 1999.03.02
Sh-utils 2.0
Modules Loaded emu10k1 sg sr_mod aic7xxx ide-cd cdrom soundcore
eeprom lm80 sensors i2c-i801 i2c-core nfs lockd sunrpc vfat
fat
/proc/cpuinfo:
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 7
model name : Pentium III (Katmai)
stepping : 3
cpu MHz : 533.089574
cache size : 512 KB
fdiv_bug : no
hlt_bug : no
sep_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 3
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca
cmov pat pse36 pn mmx fxsr xmm
bogomips : 532.48
processor : 1
vendor_id : GenuineIntel
cpu family : 6
model : 7
model name : Pentium III (Katmai)
stepping : 3
cpu MHz : 533.089574
cache size : 512 KB
fdiv_bug : no
hlt_bug : no
sep_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 3
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca
cmov pat pse36 pn mmx fxsr xmm
bogomips : 532.48
/proc/modules:
emu10k1 55588 1
sg 12564 0 (autoclean)
sr_mod 18168 1 (autoclean)
aic7xxx 112920 1
ide-cd 23412 1 (autoclean)
cdrom 13624 0 (autoclean) [sr_mod ide-cd]
soundcore 3012 4 (autoclean) [emu10k1]
eeprom 2892 0 (unused)
lm80 5324 0 (unused)
sensors 5372 0 [eeprom lm80]
i2c-i801 3848 0 (unused)
i2c-core 9820 0 [eeprom lm80 sensors i2c-i801]
nfs 28896 1 (autoclean)
lockd 31656 0 (autoclean) [nfs]
sunrpc 54276 1 (autoclean) [nfs lockd]
vfat 9404 2 (autoclean)
fat 31104 2 (autoclean) [vfat]
SCSI information (/proc/scsi/scsi):
Attached devices:
Host: scsi0 Channel: 00 Id: 03 Lun: 00
Vendor: YAMAHA Model: CRW8424S Rev: 1.0d
Type: CD-ROM ANSI SCSI revision: 02
Other notes:
I've noticed that for some reason this CD drive doesnt appear to want to
lock itself when I mount it, even though it does support tray locking.
I dont know if thats relavent, but I found it very disturbing as I
useually assume that if a drive isnt locked, it isnt mounted. My IDE DVD
drive locks itself with no problems.
Just in case its useful, here's /proc/scsi/aic7xxx/0
Adaptec AIC7xxx driver version: 5.1.21/3.2.4
Compile Options:
TCQ Enabled By Default : Enabled
AIC7XXX_PROC_STATS : Enabled
AIC7XXX_RESET_DELAY : 5
Adapter Configuration:
SCSI Adapter: Adaptec AIC-7892 Ultra 160/m SCSI host adapter
Ultra-160/m LVD/SE Wide Controller
PCI MMAPed I/O Base: 0xfc8ff000
PCI Bus 0x03 Device 0x20
Adapter SEEPROM Config: SEEPROM found and used.
Adaptec SCSI BIOS: Enabled
IRQ: 32
SCBs: Active 0, Max Active 1,
Allocated 15, HW 32, Page 255
Interrupts: 26598
BIOS Control Word: 0x58f4
Adapter Control Word: 0x5c5e
Extended Translation: Enabled
Disconnect Enable Flags: 0xffff
Ultra Enable Flags: 0x0000
Tag Queue Enable Flags: 0x0000
Ordered Queue Tag Flags: 0x0000
Default Tag Queue Depth: 8
Tagged Queue By Device array for aic7xxx host instance 0:
{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}
Actual queue depth per device for aic7xxx host instance 0:
{1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}
Statistics:
(scsi0:0:3:0)
Device using Narrow/Sync transfers at 20.0 MByte/sec, offset 15
Transinfo settings: current(12/15/0/0), goal(9/127/0/2), user(9/127/1/2)
Transinfo settings: current(12/15/0/0), goal(9/127/0/2), user(9/127/1/2)
Total transfers 28 (28 reads and 0 writes)
< 2K 2K+ 4K+ 8K+ 16K+ 32K+ 64K+ 128K+
Reads: 9 14 0 0 5 0 0 0
Writes: 0 0 0 0 0 0 0 0
--
nick
Any help appreciated....
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