MFC r280957

  Fix integer truncation bug in malloc(9)

  A couple of internal functions used by malloc(9) and uma truncated
  a size_t down to an int.  This could cause any number of issues
  (e.g. indefinite sleeps, memory corruption) if any kernel
  subsystem tried to allocate 2GB or more through malloc.  zfs would
  attempt such an allocation when run on a system with 2TB or more
  of RAM.

1 files changed, 2 insertions, 2 deletions

diff --git a/sys/mips/mips/uma_machdep.c b/sys/mips/mips/uma_machdep.c
index 1c8e6c8..a1f5e5f 100644
--- a/sys/mips/mips/uma_machdep.c
+++ b/sys/mips/mips/uma_machdep.c
@@ -41,7 +41,7 @@ __FBSDID("$FreeBSD$");
 #include <machine/vmparam.h>
 
 void *
-uma_small_alloc(uma_zone_t zone, int bytes, u_int8_t *flags, int wait)
+uma_small_alloc(uma_zone_t zone, vm_size_t bytes, u_int8_t *flags, int wait)
 {
 	vm_paddr_t pa;
 	vm_page_t m;
@@ -70,7 +70,7 @@ uma_small_alloc(uma_zone_t zone, int bytes, u_int8_t *flags, int wait)
 }
 
 void
-uma_small_free(void *mem, int size, u_int8_t flags)
+uma_small_free(void *mem, vm_size_t size, u_int8_t flags)
 {
 	vm_page_t m;
 	vm_paddr_t pa;