[138] in testers
VS2 6.3A panic: segmentation fault
daemon@ATHENA.MIT.EDU (daemon@ATHENA.MIT.EDU)
Fri Jul 21 17:42:28 1989
To: mar@ATHENA.MIT.EDU
Cc: testers@ATHENA.MIT.EDU, djf@ATHENA.MIT.EDU
Date: Fri, 21 Jul 89 17:42:02 EDT
From: John Carr <jfc@ATHENA.MIT.EDU>
This is an old (6.0) bug, which I can explain in detail to anyone
who is interested. The short story:
There is a race condition in NFS umounts, which can cause buffers
awaiting transmission to the server to be invalidated before they
are sent. It is hard to reproduce (my .logout used to do it at
least 30% of the time, but it seems network load-dependent and doesn't
happen anymore), and therefore hard to fix well.
It is observed on both RT and vax, more often on the RT
--John Carr
