usb/168743: panic: double fault caused by umass
Hans Petter Selasky
hselasky at c2i.net
Mon Jun 11 17:00:30 UTC 2012
The following reply was made to PR usb/168743; it has been noted by GNATS.
From: Hans Petter Selasky <hselasky at c2i.net>
To: freebsd at nagilum.org
Cc: freebsd-usb at freebsd.org,
freebsd-gnats-submit at freebsd.org
Subject: usb/168743: panic: double fault caused by umass
Date: Mon, 11 Jun 2012 18:57:12 +0200
Hi,
This sounds like a missing MODULE_DEPEND() issue or your pendrive is returning
an error code to some of the SCSI commands which is not handled properly.
Could you add these options to the kernel config file:
options KDB # Kernel debugger related code
options KDB_TRACE # Print a stack trace for a panic
Then get full backtrace.
Is this issue reproducable. I cannot reproduce over here using a 9-stable
GENERIC kernel without "device umass".
--HPS
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