[Qemu-devel] [PATCH] hw: intel_iommu: initialize 'name' in vtd_find_add_as

[Li Qiang]

The 'name' variable in vtd_find_add_as function is not initialized
now, so when in gdb, we will got following output:

(gdb) p name
$1 = 
"vtd-00.0\000\000\000\000\000\000\000\000\060\330\377\377\377\177\000\000\001\000\000\000\000\000\000\000p\330\377\377\377\177\000\000\353\362\372VUU\000\000p\330\377\377\377\177\000\000
  \000\000\060b\000\000\220\021\000\000\360a\000\000\200\"\002\000\020a\000\000 
 
\000\000\060b\000\000\200\332\377\377\377\177\000\000\240\330\377\377\377\177\000\000<\364\372VUU\000\000\000\000\000\000\000\000\000\000
  \000\000\060b\000"

After this patch, it is more clear:

(gdb) p name
$1 = "vtd-00.0", '\000' <repeats 119 times>

Signed-off-by: Li Qiang <address@hidden>
---
 hw/i386/intel_iommu.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c
index de86f53b4e..e379c2a512 100644
--- a/hw/i386/intel_iommu.c
+++ b/hw/i386/intel_iommu.c
@@ -3286,7 +3286,7 @@ VTDAddressSpace *vtd_find_add_as(IntelIOMMUState *s, 
PCIBus *bus, int devfn)
     uintptr_t key = (uintptr_t)bus;
     VTDBus *vtd_bus = g_hash_table_lookup(s->vtd_as_by_busptr, &key);
     VTDAddressSpace *vtd_dev_as;
-    char name[128];
+    char name[128] = {};
 
     if (!vtd_bus) {
         uintptr_t *new_key = g_malloc(sizeof(*new_key));
-- 
2.17.1