svn commit: r316493 - head/sys/vm

[John Baldwin]

Author: jhb
Date: Tue Apr  4 16:26:46 2017
New Revision: 316493
URL: https://svnweb.freebsd.org/changeset/base/316493

Log:
  Assert that the align parameter to uma_zcreate() is valid.
  
  Reviewed by:	kib
  MFC after:	1 week
  Sponsored by:	DARPA / AFRL
  Differential Revision:	https://reviews.freebsd.org/D10100

Modified:
  head/sys/vm/uma_core.c

Modified: head/sys/vm/uma_core.c
==============================================================================
--- head/sys/vm/uma_core.c	Tue Apr  4 16:08:51 2017	(r316492)
+++ head/sys/vm/uma_core.c	Tue Apr  4 16:26:46 2017	(r316493)
@@ -1888,6 +1888,9 @@ uma_zcreate(const char *name, size_t siz
 	uma_zone_t res;
 	bool locked;
 
+	KASSERT(powerof2(align + 1), ("invalid zone alignment %d for \"%s\"",
+	    align, name));
+
 	/* This stuff is essential for the zone ctor */
 	memset(&args, 0, sizeof(args));
 	args.name = name;