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[Rich Prohaska <prohaska@xxxxxxxxxxx>]

with mariadb-5.5.25 on a centos 5.8 machine, when i run this:

./mysql-test-run.pl --suite=rpl --force --max-test-fail=0 --nowarnings
--parallel=4

mysqld crashes in the xtradb code trying to deref a NULL pointer.  core
files are available.

Core was generated by
`/home/prohaska/distros/mariadb-5.5.25-linux-x86_64/bin/mysqld
--defaults-group-'.
Program terminated with signal 11, Segmentation fault.
#0  0x000000000095aa15 in os_aio_get_array_and_local_segment (global_seg=4,
message1=0x43b910d8, message2=0x43b910d0, type=0x43b910c8,
space_id=0x43b910c0)
    at /home/buildbot/buildbot/build/storage/xtradb/os/os0file.c:3787
3787 /home/buildbot/buildbot/build/storage/xtradb/os/os0file.c: No such
file or directory.
in /home/buildbot/buildbot/build/storage/xtradb/os/os0file.c
(gdb) bt
#0  0x000000000095aa15 in os_aio_get_array_and_local_segment (global_seg=4,
message1=0x43b910d8, message2=0x43b910d0, type=0x43b910c8,
space_id=0x43b910c0)
    at /home/buildbot/buildbot/build/storage/xtradb/os/os0file.c:3787
#1  os_aio_linux_handle (global_seg=4, message1=0x43b910d8,
message2=0x43b910d0, type=0x43b910c8, space_id=0x43b910c0) at
/home/buildbot/buildbot/build/storage/xtradb/os/os0file.c:4671
#2  0x00000000009114d7 in fil_aio_wait (segment=4) at
/home/buildbot/buildbot/build/storage/xtradb/fil/fil0fil.c:5530
#3  0x000000000088d1ee in io_handler_thread (arg=<value optimized out>) at
/home/buildbot/buildbot/build/storage/xtradb/srv/srv0start.c:483
#4  0x000000310e60677d in start_thread () from /lib64/libpthread.so.0
#5  0x000000310dad325d in clone () from /lib64/libc.so.6
(gdb) p os_aio_read_array
$1 = (os_aio_array_t *) 0x0