Bug 151562 - Unplugging network cable hangs system
Summary: Unplugging network cable hangs system
Alias: None
Product: Fedora
Classification: Fedora
Component: NetworkManager
Version: 4
Hardware: i686
OS: Linux
Target Milestone: ---
Assignee: Christopher Aillon
QA Contact:
Depends On:
TreeView+ depends on / blocked
Reported: 2005-03-19 19:12 UTC by Jeff Z
Modified: 2007-11-30 22:11 UTC (History)
1 user (show)

Clone Of:
Last Closed: 2006-11-27 05:15:40 UTC

Attachments (Terms of Use)

Description Jeff Z 2005-03-19 19:12:26 UTC
From Bugzilla Helper:
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.6) Gecko/20050225 Firefox/1.0.1

Description of problem:
On Dell Inspiron 600m running FC4test1 with a Broadcom Corporation NetXtreme BCM5705M Gigabit Ethernet, if for any reason the network cable is unplugged, the system hangs. The mouse and keyboard do nothing and I'm forced to do a hard reset.

I'm not entirely sure if this is a network management bug, but it seemed closest.

Version-Release number of selected component (if applicable):
kernel-2.611-1.1185_FC4 (also on the previous FC4test1 kernel)

How reproducible:

Steps to Reproduce:
1. Plug in network cable
2. Activate eth0 interface
3. Unplug network cable while eth0 still active

Actual Results:  Mouse and keyboard become unresponsive. No choice but to hit the power button.

Expected Results:  System handle the error gracefully (i.e. not hang)

Additional info:

Comment 1 Robert Bertram 2005-05-08 12:02:06 UTC
I have a similar problem on RHEL4. I upgraded to the beta packages as the
standard were more problematic. Now the wireless connects fine but plugging in
or removing the wired connection cause a system hang requiring a hard reset.

Dell Inspiron 8600/IPW2200 with the latest drivers.

I also have a broadcom but not a gigabit I think.

Comment 2 Robert Bertram 2005-05-08 22:11:59 UTC
Perhaps I spoke to soon or it's intermitant. It seems to be working fine today.

Comment 3 Kyrre Ness Sjøbæk 2006-02-16 20:51:51 UTC
Isn't this really a kernel bug? A userspace program shouldn't be able to hang
the whole system anyway (if NM was able to do that that would be another
kernellevel bug) - but a faulty kernel driver.

Could you please attach an lspci+lsof output, if this bug is still ocurring (i
see the bug report is a bit old), and possibly move it to component kernel. If
its gone, please tell so, so this bug may be closed.

Comment 4 Matthias Clasen 2006-11-27 05:15:40 UTC
Thank you for the bug report. However, Fedora Project no longer maintains this
version of the product. Please upgrade to the latest version and open a new bug
if the problem persists.

The Fedora Legacy project (http://fedoralegacy.org/) maintains some older
releases, and if you believe this bug is interesting to them, please report the
problem against Fedora Legacy component

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