Author: luporl
Date: Mon Jul 8 13:01:54 2019
New Revision: 349833
URL: https://svnweb.freebsd.org/changeset/base/349833
Log:
[PPC] Add missing SLB allocation KASSERT
Although PPC SLB code doesn't handle allocation failures,
which are rare, in most places it asserts that the pointer
returned by uma_zalloc() is not NULL, making it easier to
identify the failure and avoiding an invalid pointer dereference.
This change simply adds a missing KASSERT in SLB code.
Modified:
head/sys/powerpc/aim/slb.c
Modified: head/sys/powerpc/aim/slb.c
==============================================================================
--- head/sys/powerpc/aim/slb.c Mon Jul 8 10:21:38 2019 (r349832)
+++ head/sys/powerpc/aim/slb.c Mon Jul 8 13:01:54 2019 (r349833)
@@ -416,6 +416,7 @@ slb_alloc_tree(void)
struct slbtnode *root;
root = uma_zalloc(slbt_zone, M_NOWAIT | M_ZERO);
+ KASSERT(root != NULL, ("unhandled NULL case"));
root->ua_level = UAD_ROOT_LEVEL;
return (root);
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