carey@eniac.seas.upenn.edu (Robert Carey) (06/05/91)
We have a Sun which crashes regularly while reading a 9600 baud feed
connected to /dev/ttyb. The machine is a Sparcstation 1 with 32
megabytes of memory. At first I thought that the problem might be
specifically related to the program which reads and parses the feed.
Since then I have found that it can be crashed just as reliably by
running "/bin/cat /dev/ttyb" and waiting for about 2 minutes.
(We have also run "cat /dev/ttyb > /dev/null" with the same effect,
if that makes any difference.)
The only unusual thing about the system is that the console has been
replaced with a Wyse terminal (not my idea) in order to make it fit
better on a shelf of consoles.
Before it crashes I typically see one or more of the following messages on
the console:
zs1: silo overflow
xmballoc: out of mblks
BAD TRAP
panic: Data fault
Other times when I cat /dev/ttyb the system simply hangs.
Has anyone seen anything like this? Any idea what is happening?
Robert Carey
Susquehanna Investment Group
carey@eniac.seas.upenn.edu
carey@deadlock.uucp