[Qemu-devel] [PATCH] qdev: Validate hex properties

[Hannes Reinecke <hare@suse.de>]

strtoull() might return '-1' to signify an overflow.

Signed-off-by: Hannes Reinecke <hare@suse.de>
---
 hw/core/qdev-properties.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/hw/core/qdev-properties.c b/hw/core/qdev-properties.c
index dc8ae69..5761295 100644
--- a/hw/core/qdev-properties.c
+++ b/hw/core/qdev-properties.c
@@ -202,6 +202,9 @@ static int parse_hex8(DeviceState *dev, Property *prop, const char *str)
     if ((*end != '\0') || (end == str)) {
         return -EINVAL;
     }
+    if (*ptr == (uint8_t)-1) {
+        return -ERANGE;
+    }
 
     return 0;
 }
@@ -333,6 +336,9 @@ static int parse_hex32(DeviceState *dev, Property *prop, const char *str)
     if ((*end != '\0') || (end == str)) {
         return -EINVAL;
     }
+    if (*ptr == (uint32_t)-1) {
+        return -ERANGE;
+    }
 
     return 0;
 }
@@ -400,6 +406,9 @@ static int parse_hex64(DeviceState *dev, Property *prop, const char *str)
     if ((*end != '\0') || (end == str)) {
         return -EINVAL;
     }
+    if (*ptr == (uint64_t)-1) {
+        return -ERANGE;
+    }
 
     return 0;
 }
-- 
1.8.1.4