BUG #3752: query yields "could not find block containing chunk", then server crashes

The following bug has been logged online:

Bug reference: 3752
Logged by: Michael Charnoky
Email address: noky(at)nextbus(dot)com
PostgreSQL version: 8.3beta2
Operating system: Linux (Fedora Core 3) 2.6.17
Description: query yields "could not find block containing chunk",
then server crashes
Details:

I installed PG8.3beta2 and created a db instance using pg_restore. (The
dump was created using the pg8.3beta2 pg_dump util, from a db on a pg8.1
server). Data restored with no errors, later our app encountered an sql
error while querying data in the db. Here's the relevant log snippet:

2007-11-15 15:38:03.880 PST: ERROR: could not find block containing chunk
0x902fb98
2007-11-15 15:38:03.880 PST: STATEMENT: SELECT path_tag, dayset_tag,
time2secs(ts_endtime), segtimes
FROM pathtimes where rev=(select rev from projects) ORDER BY
time2secs(ts_endtime);
2007-11-15 15:38:29.821 PST: LOG: server process (PID 17777) was terminated
by signal 11: Segmentation fault
2007-11-15 15:38:29.821 PST: LOG: terminating any other active server
processes
2007-11-15 15:38:29.825 PST: LOG: all server processes terminated;
reinitializing
2007-11-15 15:38:29.887 PST: LOG: database system was interrupted; last
known up at 2007-11-15 15:28:27 PST
2007-11-15 15:38:29.887 PST: LOG: database system was not properly shut
down; automatic recovery in progress
2007-11-15 15:38:30.044 PST: FATAL: the database system is in recovery
mode
2007-11-15 15:38:30.285 PST: LOG: record with zero length at 0/7CB47A08
2007-11-15 15:38:30.286 PST: LOG: redo is not required
2007-11-15 15:38:30.714 PST: LOG: autovacuum launcher started
2007-11-15 15:38:30.715 PST: LOG: database system is ready to accept
connections
*** glibc detected *** free(): invalid next size (normal): 0x09045378 ***
2007-11-15 15:38:41.463 PST: LOG: server process (PID 17811) was terminated
by signal 6: Aborted
2007-11-15 15:38:41.463 PST: LOG: terminating any other active server
processes
2007-11-15 15:38:41.464 PST: LOG: all server processes terminated;
reinitializing
2007-11-15 15:38:41.516 PST: LOG: database system was interrupted; last
known up at 2007-11-15 15:38:30 PST
2007-11-15 15:38:41.516 PST: LOG: database system was not properly shut
down; automatic recovery in progress
2007-11-15 15:38:41.683 PST: LOG: record with zero length at 0/7CB47A48
2007-11-15 15:38:41.683 PST: LOG: redo is not required
2007-11-15 15:38:41.702 PST: FATAL: the database system is in recovery
mode
2007-11-15 15:38:41.806 PST: LOG: autovacuum launcher started
2007-11-15 15:38:41.807 PST: LOG: database system is ready to accept
connections