return value of snprintf not checked in qdbg_parse_ctxt_to_buf

[hmaarrfk]

dma_ip_drivers/QDMA/linux-kernel/libqdma/qdma_debugfs_queue.c

Lines 629 to 636 in f3828c8

	len += snprintf(buf + len, buflen - len,
	"\t%-47s %#-10x %u\n",
	entries[i].name, v, v);
	}
	len += snprintf(buf + len, buflen - len, "\n");
	return len;
	}

Proposed patch

diff --git a/QDMA/linux-kernel/libqdma/qdma_debugfs_queue.c b/QDMA/linux-kernel/libqdma/qdma_debugfs_queue.c
index 62c59ed..b623731 100644
--- a/QDMA/linux-kernel/libqdma/qdma_debugfs_queue.c
+++ b/QDMA/linux-kernel/libqdma/qdma_debugfs_queue.c
@@ -629,9 +629,16 @@ int qdbg_parse_ctxt_to_buf(u32 *ctxt,
                len += snprintf(buf + len, buflen - len,
                                "\t%-47s %#-10x %u\n",
                                entries[i].name, v, v);
+               if (len >= buflen){
+                       // Not enough memory
+                       return buflen - len;
+               }
        }
        len += snprintf(buf + len, buflen - len, "\n");
-
+       if (len >= buflen){
+               // Not enough memory
+               return buflen - len;
+       }
        return len;
 }

[sujathabanoth-xlnx]

Issue addressed in latest driver release, hance closing it.