From mboxrd@z Thu Jan  1 00:00:00 1970
Date: Thu, 13 Aug 1998 06:26:17 +0100
From: forsyth@caldo.demon.co.uk forsyth@caldo.demon.co.uk
Subject: [9fans] updated version of ktrans
Topicbox-Message-UUID: 7c4ef370-eac8-11e9-9e20-41e7f4b1d025
Message-ID: <19980813052617.6oTO9q5HWWWXYNvplFCjGUdVDDnZr_cOLwSU3TFq-ZE@z>

>>k.out 351: suicide: sys: trap: fault read addr=0xa1bcbde8 pc=0x38d4.

that address looks a little suspect to me ...
in this case, i'd suspect a bad pointer value was passed to free.