Bug 34771 - ghost SCSI/USB modules reading errating kernel memory
Summary: ghost SCSI/USB modules reading errating kernel memory
Alias: None
Product: Red Hat Linux
Classification: Retired
Component: kernel
Version: 7.1
Hardware: i686
OS: Linux
Target Milestone: ---
Assignee: Pete Zaitcev
QA Contact: Brock Organ
Depends On:
TreeView+ depends on / blocked
Reported: 2001-04-04 21:34 UTC by Arenas Belon, Carlo Marcelo
Modified: 2007-04-18 16:32 UTC (History)
0 users

Clone Of:
Last Closed: 2002-06-03 18:07:15 UTC

Attachments (Terms of Use)

Description Arenas Belon, Carlo Marcelo 2001-04-04 21:34:31 UTC
when autoplug is executed to load a module on the kernel because of a
hardware event (a device is connected), it doesn't check back to unload de
module when the device is disconected.

as the usb device is no longer connected, quering information such
(cdrecord -scanbus), returns errating messages from an already existing
scsi device that no longer belongs to a device.

this has been tested on qa0328 and kernel 2.4.2-0.1.40.

Comment 1 Pete Zaitcev 2002-06-03 18:07:09 UTC
I am afraid this is WONTFIX material.
We found that doing the "rmmod -a from cron" trick is
very harmful (it removes usb-uhci, for instance).
Upstream community says the same.

It should be possible for sd to figure that the device
is offline (by check condition status from usb-storage).
If it does not work, I can consider an RFE.

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