[uml-user] Kernels becoming unkillable

[Rus F. <rg...@fs...>]

Hi All,
We've just started using 2.6 hosts and in production are seeing a problem
testing didn't chuck up

Config
Host: Dual Opteron 240 1.4Ghz 2.6.3 + blaisorblade patches
Kernel: 2.4.23 + mmremap from 2.4.25 + uml-patch-2.4.23-2

We had a UML hang, non responding to SSH so I tried to bring it back to
life using

sysrq s
sysrq u
sysrq b
cad (no luck)
halt

At this point things were still running so I just manually tried to kill
then kill -9 the "linux" process. Still didn't die.

Now I'm not much of a kernel hacker but strace -p <pid> showed nothing.

"gdb -p <pid> kill" didn't kill it

Little bit lost to do what next rather than reboot.

Also this isn't the first box I've seen this on running 2.6

Guidance would be appreicated

Rus

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