今天在IBM小型机上做实验时，CRT界面老是出现以下信息。按回车后还是能继续实验。不知道是啥原因？请高手们指点迷津！
trc_lseek: bad whence value
trc_lseek: bad whence value
trc_lseek: bad whence value
trc_lseek: bad whence value
trc_lseek: bad whence value
trc_lseek: bad whence value
trc_lseek: bad whence value
trc_lseek: bad whence value
trc_lseek: bad whence value
trc_lseek: bad whence value
trc_lvm_done: dev=0x8000000a00000000, stats->dev=0x8000002a00000000
trc_lseek: bad whence value
trc_lseek: bad whence value
trc_lseek: bad whence value
trc_lseek: bad whence value
trc_lseek: bad whence value
trc_lseek: bad whence value
trc_lseek: bad whence value
trc_lseek: bad whence value
trc_lseek: bad whence value
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