Re: umount() and NFS races in 2.4.26

[James Pearson]

Thomas Moestl:
>after deploying an SMP machine at work, we started to experience Oopses
>in file-system related code relatively frequently. Investigation
>revealed that they were caused by references using junk pointers from
>freed super blocks via dangling inodes from unmounted file systems;
>Oopses would always be preceded by the warning
> VFS: Busy inodes after unmount. Self-destruct in 5 seconds.  Have a 
nice day...
>on an unmount (unmount activity is high on this machine due to heavy 
>use of the automounter).

Are you using the latest autofs4 kernel patches?

I had a similar problem - see the thread at:

http://marc.theaimsgroup.com/?l=linux-nfs&m=108515468003933&w=2

The latest autofs4 patches fixed it for me - available from:

http://www.kernel.org/pub/linux/daemons/autofs/v4

James Pearson
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