2.3.1 text corruption
Joe Carlson
carlson at lll-winken.LLNL.GOV
Sun Jun 4 04:09:13 AEST 1989
I am experiencing a rather odd corruption problem under XENIX 386
2.3.1. Basically it appears that the in-core version of certain heavily
used programs appears to get corrupted every once in a while. I believe that
I have eliminated hardware trouble as the cause of this.
The steps I took to isolate this were:
1.) /bin/sh starts to core dump when run
2.) mv /bin/sh to /bin/sh.old
3.) cp /bin/sh.old to /bin/sh
4.) /bin/sh now works correctly (/bin/sh.old still core dumps)
5.) cmp -l /bin/sh /bin/sh.old shows no diffs
It appears that there is a text cache kept in the kernel which
has corrupted it's entry for program in question.... rebooting the system
clears the trouble (or making another disk copy as I show above). The problem
appears VERY sporadically and has hit a number of programs on the system
(/bin/sh and /etc/nntpd[one of my own]) that get run a lot.
Joe Carlson carlson at lll-winken.llnl.gov (415)-422-5584
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