panic: mutex Giant not owned at /usr/src/sys/kern/kern_exit.c when ata RAID1 rebuild has completed

[Masachika ISHIZUKA]

  Hi, this is ishizuka at ish.org.

  I installed 5.1-BETA-20030507-JPSNAP from current.freebsd.org.
I did 'atacontrol rebuild 0' for ata raid ar0 for non-real raid
ata controller (ICH4 in 845GE) with GENERIC kernel and panic when
the RAID1 mirror rebuilding had just completed as follows.

panic: mutex Giant not owned at /usr/src/sys/kern/kern_exit.c: 122

  The same message was shown in 5.0-CURRENT-20030505-JPSNAP and
5.0-CURRENT-20030506-JPSNAP.