[4024] in Athena Bugs
"panic: kernel trap" on NFS unmounts
daemon@ATHENA.MIT.EDU (John Carr)
Sat Jan 20 23:53:06 1990
To: bugs@ATHENA.MIT.EDU
Date: Sat, 20 Jan 90 23:52:54 EST
From: John Carr <jfc@ATHENA.MIT.EDU>
This report is mostly for reference, as I intend on working on the fix
myself, but I do want this registered as something that needs fixing.
When an NFS filesystem is unmounted, it is possible for a buffer in the
async daemon queue to be invalidated without being removed from the queue.
This cuases a crash when the I/O routine attempts to process it.
This bug has been present since at least 6.0R, but is hard to reproduce on
demand (it used to happen to me about 40% of the time on logout from RTs and
10% from vaxes, but I no longer use NFS). Bugs #1842 is my first report on
this bug.
