From: "Gabriel L. Somlo" <so...@cmu.edu>
Enforce a single assignment of data for each distinct selector key.
Signed-off-by: Gabriel Somlo <so...@cmu.edu>
Reviewed-by: Laszlo Ersek <ler...@redhat.com>
Signed-off-by: Gerd Hoffmann <kra...@redhat.com>
---
hw/nvram/fw_cfg.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/hw/nvram/fw_cfg.c b/hw/nvram/fw_cfg.c
index d2a4347..0c0e15e 100644
--- a/hw/nvram/fw_cfg.c
+++ b/hw/nvram/fw_cfg.c
@@ -423,6 +423,7 @@ static void fw_cfg_add_bytes_read_callback(FWCfgState *s,
uint16_t key,
key &= FW_CFG_ENTRY_MASK;
assert(key < FW_CFG_MAX_ENTRY && len < UINT32_MAX);
+ assert(s->entries[arch][key].data == NULL); /* avoid key conflict */
s->entries[arch][key].data = data;
s->entries[arch][key].len = (uint32_t)len;
--
1.8.3.1
