Re: BUG: Bad page map in process udevd (anon_vma: (null)) in2.6.38-rc4

[Eric Dumazet]

So I confirm previous kernels had a bug too in rollback_registered()

The "single" list was left as is before exiting.

default_device_exit_batch() seems OK, because the rtnl_unlock() acted as
a barrier in this respect : devices were removed from dev_kill_list
before exiting default_device_exit_batch()

Following this mail, please find two patches.

One from Linus to address bug introduced in commit 443457242beb6
(net: factorize
sync-rcu call in unregister_netdevice_many) in 2.6.38-rc1

A second one to address old bugs, so that stable teams can fix previous
kernels (2.6.33 and up)
Offending commit was 9b5e383c11b08784 (net: Introduce
unregister_netdevice_many())

Of course this second patch is also needed for current linux-2.6

Thanks


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