1 files changed, 7 insertions, 0 deletions
diff --git a/hw/net/cadence_gem.c b/hw/net/cadence_gem.c
index 0346f3e335..e5f3c985a4 100644
--- a/hw/net/cadence_gem.c
+++ b/hw/net/cadence_gem.c
@@ -664,6 +664,13 @@ static ssize_t gem_receive(NetClientState *nc, const uint8_t *buf, size_t size)
                  GEM_DMACFG_RBUFSZ_S) * GEM_DMACFG_RBUFSZ_MUL;
     bytes_to_copy = size;
 
+    /* Hardware allows a zero value here but warns against it. To avoid QEMU
+     * indefinite loops we enforce a minimum value here
+     */
+    if (rxbufsize < GEM_DMACFG_RBUFSZ_MUL) {
+        rxbufsize = GEM_DMACFG_RBUFSZ_MUL;
+    }
+
     /* Pad to minimum length. Assume FCS field is stripped, logic
      * below will increment it to the real minimum of 64 when
      * not FCS stripping