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    SubjectRe: 2.6.19-rc2-mm2 - process_session-helper breaks /sbin/killall5
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    On Fri, 20 Oct 2006 01:56:41 PDT, Andrew Morton said:
    >
    > ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.19-rc2/2.6.19-rc2-mm2/

    > +add-process_session-helper-routine.patch
    > +add-process_session-helper-routine-deprecate-old-field.patch
    > +add-process_session-helper-routine-deprecate-old-field-tidy.patch
    > +add-process_session-helper-routine-deprecate-old-field-fix-warnings.patch
    > +add-process_session-helper-routine-deprecate-old-field-fix-warnings-2.patch
    > +rename-struct-namespace-to-struct-mnt_namespace.patch
    > +add-an-identifier-to-nsproxy.patch
    > +rename-struct-pspace-to-struct-pid_namespace.patch
    > +add-pid_namespace-to-nsproxy.patch
    > +use-current-nsproxy-pid_ns.patch
    > +add-child-reaper-to-pid_namespace.patch
    >
    > Start work on virtualising process sessions.

    Sorry for the delay in spotting this one sooner (and I'm surprised apparently
    nobody else has). Was busy, didn't get a chance to bisect it at all till
    today, and I only got as far as "one of the above patches".

    System works fine, except when you go to shutdown. When it hits the /sbin/killall5
    call in /etc/init.d/halt, it kills *all* the processes, and we get a
    nice message 'INIT: no more processes in current runlevel', and we're dead in
    the water. Checking with alt-sysrg-T shows that in fact, the only things
    left running are the various kernel threads. As near as I can tell, killall5
    wasn't able to tell that its parent process was part of its process group,
    so didn't refrain from killing it.

    Any ideas/clues?
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