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ca2a05aa7c
The length "nbytes" passed into read_buf should never be negative, but we check only for too-large values of "nbytes", not for too-small values. Make nbytes unsigned, so it's clear that the former tests are sufficient. (Despite this read_buf() currently correctly returns an xdr error in the case of a negative length, thanks to an unsigned comparison with size_of() and bounds-checking in kmalloc(). This seems very fragile, though.) Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>