Sorry for the semi-crosspost, but I thought I'd finish out the thread from the
beginning of the month and give an update to those involved.

My method for causing the problem every time (example works under 2.6.9-ck3 and
2.6.10-rc2-bk7):

# mount tmpfs tmp/ -t tmpfs
# TMPDIR=./tmp/ /kernels/non-fix-kill-patched-kernel rootfs=debian.fs
# uml_mconsole .uml/xxx/mconsole cad
# kill -KILL <pid1> <pid2>
# umount tmp/
umount: /root/tmp: device is busy

CAD is set to shutdown in the UML's inittab.  After sending CAD, it hangs, which
requires kill.  Under 2.6.10-rc3-bk10 this works fine -- the tmpfs mount is 
unmounted
without problems.  I'm not sure where exactly it's been fixed, perhaps in
just -rc3...

Looks like it's fixed in recent patches. Anyone care to confirm?

BTW, I rediffed fix-kill for 2.4:
http://www.theshore.net/~caker/patches/2.4.27-1um/

-Chris



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