Hi,

 Having been bitten three times by the same issue this week, I'm
 dropping a short note here:
 /proc/*/exe under unionfs points to the union-ed mount points, e.g.
 /squashmnt/blah and /persistmnt/blah.

 One case was with Java, #224110, another with apport, #224168, and the
 third case is with start-stop-daemon and --exec (didn't look into that
 one yet, I believe it prevents stopping hal properly for instance, and
 hence restarting it).

 We should seriously get unionfs fixed for this as it's not too grave
 for live CDs, but it certainly is for UME.

 In the mean time, the apps should strip /rofs, /cow, /squashmnt and
 /persistmnt from /proc/*/exe.

   Bye,
-- 
Loïc Minier

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