exece

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1 total messages Started by ucbvaxmark Sun, 18 May 1980 22:56

#12

Author: ucbvaxmark
Date: Sun, 18 May 1980 22:56

12 lines
565 bytes

>From bill Mon Dec 31 14:37:09 1979
To: v7bugs
Subject: bug in exece()
Cc:  tbl jfr mhtsa!ted

there is a nasty bug in exece() (which appeared in 50 changes)
after the
	bp = bread(swapdev, (daddr_t)(dbtofsb(swplo+bno)+(nc>>BSHIFT)));
put
	bp->b_flags &= ~B_DELWRI;
else the buffer may stay in the cache with DELWRI set and clobber a
random block in the swap area at some later time.

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