Author: glebius
Date: Mon Apr 22 09:02:23 2013
New Revision: 249763
URL: http://svnweb.freebsd.org/changeset/base/249763
Log:
Panic if UMA_ZONE_PCPU is created at early stages of boot, when mp_ncpus
isn't yet initialized. Otherwise we will panic at first allocation later.
Sponsored by: Nginx, Inc.
Modified:
head/sys/vm/uma_core.c
Modified: head/sys/vm/uma_core.c
==============================================================================
--- head/sys/vm/uma_core.c Mon Apr 22 08:28:53 2013 (r249762)
+++ head/sys/vm/uma_core.c Mon Apr 22 09:02:23 2013 (r249763)
@@ -1139,6 +1139,7 @@ keg_small_init(uma_keg_t keg)
u_int shsize;
if (keg->uk_flags & UMA_ZONE_PCPU) {
+ KASSERT(mp_ncpus > 0, ("%s: ncpus %d\n", __func__, mp_ncpus));
keg->uk_slabsize = sizeof(struct pcpu);
keg->uk_ppera = howmany(mp_ncpus * sizeof(struct pcpu),
PAGE_SIZE);
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