Bug 102755 - usb-core module + RAID0 (Adaptect 2940W aic7xxx) hangs sytem
usb-core module + RAID0 (Adaptect 2940W aic7xxx) hangs sytem
Product: Red Hat Linux
Classification: Retired
Component: kernel (Show other bugs)
i686 Linux
medium Severity medium
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Assigned To: Pete Zaitcev
Brian Brock
Depends On:
  Show dependency treegraph
Reported: 2003-08-20 13:54 EDT by Don
Modified: 2007-04-18 12:57 EDT (History)
1 user (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2003-11-12 07:07:45 EST
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Regression: ---
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Verified Versions:
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oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Attachments (Terms of Use)
System info (14.94 KB, text/plain)
2003-08-20 14:00 EDT, Don
no flags Details
/var/log/messages (48.85 KB, text/plain)
2003-08-20 14:03 EDT, Don
no flags Details

  None (edit)
Description Don 2003-08-20 13:54:27 EDT
From Bugzilla Helper:
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; .NET CLR 

Description of problem:

When usb-core is compiled as a module, system locks sporadically - no console 
access, cannot ssh, etc.  If left alone, it will come back after some time (up 
to an hour).  (See attached /var/log/messages.)

If I compile a custom kernel, and make usb support part of the kernel, instead 
of a module, I never experience this issue.

OS is installed on 1 SCSI disk
Using RAID0 array with 8 disks for file server partition

I think raid0 is significant.

Version-Release number of selected component (if applicable):

How reproducible:

Steps to Reproduce:
1.  Boot stock kernel
2.  Perform some I/O instensive operation (extract kernel source)
3.  When machine locks, do not reboot it.  Leave it alone.

Additional info:
Comment 1 Don 2003-08-20 14:00:12 EDT
Created attachment 93790 [details]
System info
Comment 2 Don 2003-08-20 14:03:03 EDT
Created attachment 93791 [details]

This /var/log/messages excerpt shows the system was locked from 15:57 until

Lots of SCSI debug info
Comment 3 Pete Zaitcev 2003-08-20 14:16:45 EDT
What does happen if you press NumLock, does the LED switch on/off?
Comment 4 Pete Zaitcev 2003-11-10 19:19:04 EST
Poking requestor with a sharp stick and NEEDINFO-ing.
Comment 5 Don 2003-11-12 07:07:45 EST
Sorry for never following up on this defect...  When I stated above
"If I compile a custom kernel, and make usb support part of the
kernel, instead of a module, I never experience this issue," I was
wrong.  The issue still happened (just took a few days).

I ended up putting the SCSI card and disk array in a different PC
(also an HP Kayak, but a newer model).  The problem went away after that.

So, I can no longer reproduce the issue, or do any more tests.  The
problem was either a hardware compatibility issue, or perhaps a bad
motherboard, CPU, RAM, or other hardware.

This bug can be closed.

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