Author: tijl
Date: Thu Oct 30 14:36:27 2014
New Revision: 273863
URL: https://svnweb.freebsd.org/changeset/base/273863
Log:
Avoid possible overflow in agp_generic_alloc_memory.
MFC after: 1 week
Modified:
head/sys/dev/agp/agp.c
Modified: head/sys/dev/agp/agp.c
==============================================================================
--- head/sys/dev/agp/agp.c Thu Oct 30 14:26:36 2014 (r273862)
+++ head/sys/dev/agp/agp.c Thu Oct 30 14:36:27 2014 (r273863)
@@ -485,7 +485,7 @@ agp_generic_alloc_memory(device_t dev, i
if ((size & (AGP_PAGE_SIZE - 1)) != 0)
return 0;
- if (sc->as_allocated + size > sc->as_maxmem)
+ if (size > sc->as_maxmem - sc->as_allocated)
return 0;
if (type != 0) {
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