Author: trasz
Date: Fri Mar 18 06:47:23 2011
New Revision: 219727
URL: http://svn.freebsd.org/changeset/base/219727
Log:
In vm_daemon(), when iterating over all processes in the system, skip those
which are not yet fully initialized (i.e. ones with p_state == PRS_NEW).
Without it, we could panic in _thread_lock_flags().
Note that there may be other instances of FOREACH_PROC_IN_SYSTEM() that
require similar fix.
Reported by: pho, keramida
Discussed with: kib
Modified:
head/sys/vm/vm_pageout.c
Modified: head/sys/vm/vm_pageout.c
==============================================================================
--- head/sys/vm/vm_pageout.c Thu Mar 17 22:47:52 2011 (r219726)
+++ head/sys/vm/vm_pageout.c Fri Mar 18 06:47:23 2011 (r219727)
@@ -1281,6 +1281,8 @@ vm_pageout_oom(int shortage)
FOREACH_PROC_IN_SYSTEM(p) {
int breakout;
+ if (p->p_state != PRS_NORMAL)
+ continue;
if (PROC_TRYLOCK(p) == 0)
continue;
/*
@@ -1649,6 +1651,8 @@ vm_daemon()
FOREACH_PROC_IN_SYSTEM(p) {
vm_pindex_t limit, size;
+ if (p->p_state != PRS_NORMAL)
+ continue;
/*
* if this is a system process or if we have already
* looked at this process, skip it.
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