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[3/4] cpu: assert host pointer offset within block

Message ID 1415785203-26938-4-git-send-email-mst@redhat.com
State New
Headers show

Commit Message

Michael S. Tsirkin Nov. 12, 2014, 9:44 a.m. UTC 
Make accesses safer in case we missed some
check somewhere.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
---
 include/exec/cpu-all.h | 1 +
 1 file changed, 1 insertion(+)
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Patch

diff --git a/include/exec/cpu-all.h b/include/exec/cpu-all.h
index 9d8d408..7c3a5e7 100644
--- a/include/exec/cpu-all.h
+++ b/include/exec/cpu-all.h
@@ -315,6 +315,7 @@  typedef struct RAMBlock {
 
 static inline void *ramblock_ptr(RAMBlock *block, ram_addr_t offset)
 {
+    assert(offset < block->length);
     return (char *)block->host + offset;
 }