idr_remove error with 2.6.13-rc6

["Vladimir B. Savkin" <master@sectorb.msk.ru>]

Hello! I saw the following in the logs:
=== START
idr_remove called for id=200 which is not allocated.

Call Trace:<ffffffff8014abb0>{autoremove_wake_function+0} <ffffffff8023ee5f>{sub_remove+239}
       <ffffffff8023ee99>{idr_remove+41} <ffffffff802599b7>{release_dev+1815}
       <ffffffff801a1e42>{inotify_dentry_parent_queue_event+66}
       <ffffffff80191941>{dput+33} <ffffffff80259f41>{tty_release+17}
       <ffffffff8017a75a>{__fput+154} <ffffffff80178f3e>{filp_close+110}
       <ffffffff80136d53>{put_files_struct+115} <ffffffff80137ba9>{do_exit+489}
       <ffffffff80137f00>{sys_exit_group+0} <ffffffff801221c1>{ia32_sysret+0}
=== END
AFAICT this caused no harm.       
The box is dual Opteron with 64-bit kernel and mixed userland.
I saw a similar trace once with 2.6.13-rc5 too.

~
:wq
                                        With best regards, 
                                           Vladimir Savkin. 

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