svn commit: r345273 - head/sys/kern

[Andrew Gallatin]

Author: gallatin
Date: Mon Mar 18 12:41:42 2019
New Revision: 345273
URL: https://svnweb.freebsd.org/changeset/base/345273

Log:
  Fix a typo introduced in r344133
  
  The line was misedited to change tt to st instead of
  changing ut to st.
  
  The use of st as the denominator in mul64_by_fraction() will lead
  to an integer divide fault in the intr proc (the process holding
  ithreads) where st will be 0.  This divide by 0 happens after
  the total runtime for all ithreads exceeds 76 hours.
  
  Submitted by: bde

Modified:
  head/sys/kern/kern_resource.c

Modified: head/sys/kern/kern_resource.c
==============================================================================
--- head/sys/kern/kern_resource.c	Mon Mar 18 12:34:13 2019	(r345272)
+++ head/sys/kern/kern_resource.c	Mon Mar 18 12:41:42 2019	(r345273)
@@ -978,7 +978,7 @@ calcru1(struct proc *p, struct rusage_ext *ruxp, struc
 		su = (tu * st) / tt;
 	} else {
 		uu = mul64_by_fraction(tu, ut, tt);
-		su = mul64_by_fraction(tu, ut, st);
+		su = mul64_by_fraction(tu, st, tt);
 	}
 
 	if (tu >= ruxp->rux_tu) {