[7358] in Athena Bugs
/dev/drum
daemon@ATHENA.MIT.EDU (daemon@ATHENA.MIT.EDU)
Mon Mar 25 14:22:41 1991
To: bugs@ATHENA.MIT.EDU
Date: Mon, 25 Mar 91 14:22:27 EST
From: John Carr <jfc@ATHENA.MIT.EDU>
On a VAX 3100, the following command will crash the system:
# cp /dev/drum /dev/null
There is a combination of 3 bugs which cause this:
1. swdevt on the VS 3100 contains device (21,3) which according to
the comment is /dev/rz3d. It is really /dev/rz0d. This device
should be removed; it was going to be used for the VAX dialup
servers but they have a different partition table instead.
2. swstrategy does not check to see whether a swap device is in use
before calling its strategy routine.
3. szstrategy does not check for an out of range disk number.
The same command might or might not crash a VS II.
