[PATCH 26/28] target/ppc: Replace g_memdup() by g_memdup2_qemu()

[Philippe Mathieu-Daudé]

Per 
https://discourse.gnome.org/t/port-your-module-from-g-memdup-to-g-memdup2-now/5538

  The old API took the size of the memory to duplicate as a guint,
  whereas most memory functions take memory sizes as a gsize. This
  made it easy to accidentally pass a gsize to g_memdup(). For large
  values, that would lead to a silent truncation of the size from 64
  to 32 bits, and result in a heap area being returned which is
  significantly smaller than what the caller expects. This can likely
  be exploited in various modules to cause a heap buffer overflow.

Replace g_memdup() by the safer g_memdup2_qemu() wrapper.

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
---
 target/ppc/mmu-hash64.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/target/ppc/mmu-hash64.c b/target/ppc/mmu-hash64.c
index 19832c4b46f..2ee6025a406 100644
--- a/target/ppc/mmu-hash64.c
+++ b/target/ppc/mmu-hash64.c
@@ -1122,7 +1122,8 @@ void ppc_hash64_init(PowerPCCPU *cpu)
         return;
     }
 
-    cpu->hash64_opts = g_memdup(pcc->hash64_opts, sizeof(*cpu->hash64_opts));
+    cpu->hash64_opts = g_memdup2_qemu(pcc->hash64_opts,
+                                      sizeof(*cpu->hash64_opts));
 }
 
 void ppc_hash64_finalize(PowerPCCPU *cpu)
-- 
2.31.1