[kernel] Update syscall buffer verify FAULT to show bad address #2216
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Adds more verbose error message to FAULT output when large model programs pass a buffer that seemingly does not belong to the process address space. Discussed in #2200 (comment).
Also fixes unsaved CX register in OWC __divmod routine. The C library should be recompiled for Watcom using either "make owc" or ./buildc86.sh.
@rafael2k: It would be worth a try to remove the "return 0" hack in verfy_area and then rerun gzip after recompiling the OW C library. This will then give better output as to what is happening with gzip, especially if run with strace.