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[Bug 740473] New: Kernel panic on usb web stick unplug
  • From: bugzilla_noreply@xxxxxxxxxx
  • Date: Tue, 10 Jan 2012 09:39:21 +0000
  • Message-id: <bug-740473-21960@http.bugzilla.novell.com/>

https://bugzilla.novell.com/show_bug.cgi?id=740473

https://bugzilla.novell.com/show_bug.cgi?id=740473#c0


Summary: Kernel panic on usb web stick unplug
Classification: openSUSE
Product: openSUSE 12.1
Version: Final
Platform: x86-64
OS/Version: Other
Status: NEW
Severity: Normal
Priority: P5 - None
Component: Kernel
AssignedTo: kernel-maintainers@xxxxxxxxxxxxxxxxxxxxxx
ReportedBy: andrea.turrini@xxxxxxxxx
QAContact: qa@xxxxxxx
Found By: ---
Blocker: ---


Created an attachment (id=470447)
--> (http://bugzilla.novell.com/attachment.cgi?id=470447)
Picture of the screen reporting the kernel panic.

User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:10.0) Gecko/20100101
Firefox/10.0

I am running openSUSE 12.1 x86-64 with kernel 3.1.0-1.2-desktop on an Acer
Aspire 1810TZ (Genuine Intel(R) CPU U4100 @ 1.30GHz) and I use a MedionMobile
Web Stick S4011 for internet connection (it is actually an Huawei E160;
idVendor=12d1, idProduct=1003).
I manage the web stick using a Java program provided by the 3 operator on the
Huawei E220 web stick; I do not think this is the culprit since it is more than
one year that I use it without problems and with oS 11.4 I had no problems as
with oS 12.1.

I obtain a kernel panic with a completely frozen system (even magic sysrq does
not work; I have to push the power button for 5 seconds in order to power off
the laptop) when I unplug the stick after I close the connection.
However this happens only if I do not wait enough time (about 5 seconds) after
the end of the connection.

/var/log/messages does not report the panic and I have not found any useful
information in the logs; so the only thing I can attach is a picture of the
screen (I reduced the size of the picture to 1024x768; if you need, I can also
provide the full resolution picture - 3264x2448).

If you need more information, you have to tell me how I can obtain them.

Reproducible: Sometimes

Steps to Reproduce:
1. Start an internet connection using the web stick
2. Close the connection
3. Unplug the webstick in a short time
Actual Results:
Kernel panic.

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