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From: John Birrell <jb@FreeBSD.org>
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Subject: PERFORCE change 135171 for review
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http://perforce.freebsd.org/chv.cgi?CH=135171

Change 135171 by jb@jb_freebsd1 on 2008/02/10 20:49:14

	Add another check that the requested CPU is not only within
	range but actually exists.

Affected files ...

.. //depot/projects/dtrace/src/sys/cddl/dev/dtrace/dtrace_ioctl.c#20 edit

Differences ...

==== //depot/projects/dtrace/src/sys/cddl/dev/dtrace/dtrace_ioctl.c#20 (text+ko) ====

@@ -179,6 +179,8 @@
 
 		if (desc.dtbd_cpu < 0 || desc.dtbd_cpu >= NCPU)
 			return (ENOENT);
+		if (pcpu_find(desc.dtbd_cpu) == NULL)
+			return (ENOENT);
 
 		mutex_enter(&dtrace_lock);