NetBSD Problem Report #39793

From www@NetBSD.org  Fri Oct 24 10:22:11 2008
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Date: Fri, 24 Oct 2008 10:22:11 +0000 (UTC)
From: hramrach@centrum.cz
Reply-To: hramrach@centrum.cz
To: gnats-bugs@NetBSD.org
Subject: crash on umass disconnect
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>Number:         39793
>Category:       kern
>Synopsis:       crash on umass disconnect
>Confidential:   no
>Severity:       critical
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Fri Oct 24 10:25:00 +0000 2008
>Originator:     Michal Suchanek
>Release:        4.0.1
>Organization:
>Environment:
i386
>Description:
I tried to install NetBSD on an USB drive connected to a miniMac.

During installation the kernel panicked in some usb driver memory allocation routine.

I tried to install Linux instead, and it turned out the device is flaky and disconnects after some time of heavy IO and irregular(such as during system install).

I did not try to reproduce the bug but I recall NetBSD having trouble with umass devices disconnected while in use.
>How-To-Repeat:
mount an umass device and disconnect it
>Fix:

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