Date: Wed, 05 Jul 2000 16:41:32 +0200 From: Ron Klinkien <ron@zappa.demon.nl> To: current@freebsd.org Subject: Sysinstall panics kernel when SCSI_DELAY in kernel is too short, is this ok? Message-ID: <3963491C.FA3546D9@zappa.demon.nl>
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Hi,
In current as of today, /stand/sysinstall generates the following kernel
panic when probing for devices...
--- (typed manually from console) ---
fatal trap 12: page fault while in kernel mode
fault virtual addres = 0x26c80
fault code = supervisor read, page not present
instruction pointer = 0x8:0xc017309e
stack pointer = 0x10:0xc8782d04
frame pointer = 0x10:0xc8782d04
code segment = base 0x0, limit 0xfffff, type 0x1b
= DPL 0, pres 1, def32 1, gram 1
processor eflags = interrupt enabled, resume, IOPL = 0
current process = 163 (sysinstall)
interrupt mask = none
trap number = 12
panic: page fault
scsi part from dmesg:
da0 at ahc0 bus 0 target 10 lun 0
da0: <QUANTUM ATLAS IV 9 WLS 0909> Fixed Direct Access SCSI-3 device
da0: 80.000MB/s transfers (40.000MHz, offset 31, 16bit), Tagged Queueing
Enabled
da0: 8761MB (17942584 512 byte sectors: 255H 63S/T 1116C)
WARNING: / was not properly dismounted
(cd1:ahc0:0:5:0): got CAM status 0x4c
(cd1:ahc0:0:5:0): fatal error, failed to attach to device
(cd1:ahc0:0:5:0): lost device
(cd1:ahc0:0:5:0): removing device entry
cd0 at ahc0 bus 0 target 1 lun 0
cd0: <PLEXTOR CD-ROM PX-32TS 1.03> Removable CD-ROM SCSI-2 device
cd0: 10.000MB/s transfers (10.000MHz, offset 15)
cd0: Attempt to query device size failed: NOT READY, Medium not present
Notice the cd1: lines, its a CDR (HP 4020i) which is not recognized
because SCSI_DELAY
was too short in kernel config.
When I raise it too 15000 instead of 150 the cd1 is recognized on
startup.
And the panic went away, thats not the problem.
My question is:
Is the device entry removed ok from the system like dmesg says,
sysinstall seems
to still find something there when probing, and crashes the system.
The scsi controller is a ahc type (onboard Asus P2B-S).
Regards,
Ron.
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