Bug 154007 - unregister_netdevice: waiting loop locks up system
unregister_netdevice: waiting loop locks up system
Status: CLOSED NEXTRELEASE
Product: Fedora
Classification: Fedora
Component: kernel (Show other bugs)
2
i686 Linux
medium Severity high
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Assigned To: Dave Jones
Brian Brock
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Depends On:
Blocks:
  Show dependency treegraph
 
Reported: 2005-04-06 11:19 EDT by Hrunting Johnson
Modified: 2015-01-04 17:18 EST (History)
3 users (show)

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Fixed In Version:
Doc Type: Bug Fix
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Last Closed: 2005-04-16 00:25:01 EDT
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Description Hrunting Johnson 2005-04-06 11:19:53 EDT
From Bugzilla Helper:
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.6) Gecko/20050317 Firefox/1.0.2

Description of problem:
When shutting down an interface, it will occasionally do something like:

unregister_netdevice: waiting for bond0.50 to become free. Usage count = 3
unregister_netdevice: waiting for bond0.50 to become free. Usage count = 3
unregister_netdevice: waiting for bond0.50 to become free. Usage count = 3
unregister_netdevice: waiting for bond0.50 to become free. Usage count = 3
unregister_netdevice: waiting for bond0.50 to become free. Usage count = 3
unregister_netdevice: waiting for bond0.50 to become free. Usage count = 3
unregister_netdevice: waiting for bond0.50 to become free. Usage count = 3
unregister_netdevice: waiting for bond0.50 to become free. Usage count = 3

These lines repeat until the box is power-cycled.  All access to the box is frozen.

Version-Release number of selected component (if applicable):
kernel-2.6.10-1.771_FC2

How reproducible:
Sometimes

Steps to Reproduce:
1. setup interfaces (I think vlans may help)
2. shutdown interface
3. shutdown may cause deadlock
  

Actual Results:  Deadlock

Expected Results:  No deadlock

Additional info:

There's a conversation started the other day on the linux-netdev list here:

http://marc.theaimsgroup.com/?l=linux-netdev&m=111261362929389&w=2

Looks like it's a problem in the kernel, but it's not reproducible enough.
Comment 1 Dave Jones 2005-04-16 00:25:01 EDT
Fedora Core 2 has now reached end of life, and no further updates will be
provided by Red Hat.  The Fedora legacy project will be producing further kernel
updates for security problems only.

If this bug has not been fixed in the latest Fedora Core 2 update kernel, please
try to reproduce it under Fedora Core 3, and reopen if necessary, changing the
product version accordingly.

Thank you.

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