Author: dchagin
Date: Sun Mar 8 11:12:23 2009
New Revision: 189530
URL: http://svn.freebsd.org/changeset/base/189530
Log:
MFC r189232, r189313:
Fix range-check error introduced in r182292.
Panic in case the ncpus == 0. it helps to catch bugs in the callers.
Approved by: kib (mentor)
Modified:
stable/7/sys/ (props changed)
stable/7/sys/contrib/pf/ (props changed)
stable/7/sys/dev/ath/ath_hal/ (props changed)
stable/7/sys/dev/cxgb/ (props changed)
stable/7/sys/kern/subr_smp.c
Modified: stable/7/sys/kern/subr_smp.c
==============================================================================
--- stable/7/sys/kern/subr_smp.c Sun Mar 8 10:58:37 2009
(r189529)
+++ stable/7/sys/kern/subr_smp.c Sun Mar 8 11:12:23 2009
(r189530)
@@ -358,9 +358,11 @@ smp_rendezvous_cpus(cpumask_t map,
return;
}
- for (i = 0; i < mp_maxid; i++)
+ for (i = 0; i <= mp_maxid; i++)
if (((1 << i) & map) != 0 && !CPU_ABSENT(i))
ncpus++;
+ if (ncpus == 0)
+ panic("ncpus is 0 with map=0x%x", map);
/* obtain rendezvous lock */
mtx_lock_spin(&smp_ipi_mtx);
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