Re: ahc lockups in -current

[Brandon Hume]

 It seems that the last changes to the ahc drivers (committed on the
 18th) are causing my system to lock up. I'd check the aic7890 specific

I just upgraded my system to the latest -current today, from a long
hiatus... last time I did a world was July 3rd.

I can no longer boot the system.  I was beginning to sort through the boot
floppies, to figure out when the changes were made that sunk me.  Thanks for
saving me the trouble.  :)

I'm booting off the onboard AIC7895 on a Tyan Thunder/100.  I get the same
error you do initially, followed by many, many SCSI bus resets, errors about
lost devices, SCBs aborted, and the like.  After a period, the system
panics... not about being unable to mount the root fs like I expected, but
about 'page fault in kernel mode' or something similar.

(da0:ahc0:0:0:0): SCB 0x9 - timed out in Command phase, SEQADDR == 0xa0
(da0:ahc0:0:0:0): BDR message in message buffer
(da0:ahc0:0:0:0): SCB 0x9 - timed out in Command phase, SEQADDR == 0x9f
(da0:ahc0:0:0:0): no longer in timeout, status = 34b
ahc0: Issued Channel A Bus Reset. 4 SCBs aborted

etc...

Finally it ends with 'Fatal trap 12: page fault while in kernel mode'
fault virtual address = 0x3c
fault code = supervisor write, page not present

The machine locks up hard at that, needing a power cycle.  The SCSI activity
light blazes.

Sorry I can't cut'n'paste the errors to be more useful, I don't have a serial
console.  I'm copying them by hand as best I can (I'd appreciate being told
a better method... :) )

-- 
Brandon Hume- hume - BOFH.Halifax.NS.Ca, http://WWW.BOFH.Halifax.NS.Ca/


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Re: ahc lockups in -current

[Manfred Antar]

At 06:07 PM 7/23/2000 -0500, Mike Meyer wrote:
It seems that the last changes to the ahc drivers (committed on the
18th) are causing my system to lock up. I'd check the aic7890 specific
changes first, but that's just me.

The problem is that when I start doing I/O to two drives, the system
hangs. The SCSI controller and both drives(*) turn on their "I'm busy"
LED, so I assume the scsi bus is hung. They OS is still there, but
trying to do anything that touches the drives causes the process to
lock up. I get no core dump and no messages to the console indicating
any problems.

With this version, I *do* get the following message at boot time that
I didn't get before:

(noperiph:ahc0:0:-1:-1): SCSI bus reset delivered. 0 SCBs aborted.

The system configuration is:

I get the same hang when doing a dump to an Exabyte 8505 connected to on board aic7880
My disks are hooked up to an internal DPT Raid controller and no problem there.
Any time I try to access the tape drive it panics.
Sorry I don't have the panic message as I'm running this machine headless at the 
moment.
Manfred

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