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From: Mostyn/Annabella <mrl@teleport.com>
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Subject: vm/kern_lock.c:lock_read hang ?
To: current@freebsd.org
Date: Sun, 10 Mar 1996 09:51:05 -0800 (PST)
Cc: mrl@teleport.com
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Hi,
My occaisional ppp (kernel) hangs seem to boil down to processes
sleeping at the tsleep(l, PVM, "lockrd", 0); statement in
lock_read in vm/kern_lock.c.
Any attempt to do anything at this point permanently hangs the
machine.

Another way to create an instant panic is to go into ddb
(cntl/alt/esc) and type -

show map

which goes off to vm_map_print and panics.


This with a kernel from March 3rd.

Mostyn Lewis