memory: make sure that client is always inside range

Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Orit Wasserman <owasserm@redhat.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/include/exec/memory-internal.h b/include/exec/memory-internal.h
index b58010f1d0..d09d6d8355 100644
--- a/include/exec/memory-internal.h
+++ b/include/exec/memory-internal.h
@@ -43,6 +43,7 @@ void qemu_ram_free_from_ptr(ram_addr_t addr);
 static inline bool cpu_physical_memory_get_dirty_flag(ram_addr_t addr,
                                                       unsigned client)
 {
+    assert(client < DIRTY_MEMORY_NUM);
     return ram_list.phys_dirty[addr >> TARGET_PAGE_BITS] & (1 << client);
 }
 
@@ -74,6 +75,7 @@ static inline int cpu_physical_memory_get_dirty(ram_addr_t start,
 static inline void cpu_physical_memory_set_dirty_flag(ram_addr_t addr,
                                                       unsigned client)
 {
+    assert(client < DIRTY_MEMORY_NUM);
     ram_list.phys_dirty[addr >> TARGET_PAGE_BITS] |= (1 << client);
 }
 
@@ -89,6 +91,8 @@ static inline int cpu_physical_memory_clear_dirty_flag(ram_addr_t addr,
 {
     int mask = ~(1 << client);
 
+    assert(client < DIRTY_MEMORY_NUM);
+
     return ram_list.phys_dirty[addr >> TARGET_PAGE_BITS] &= mask;
 }