Check against overflow of internal buffer.

Drop unnecessary and confusing debug info.

1 files changed, 6 insertions, 1 deletions

diff --git a/lib/gzip.c b/lib/gzip.c
index 8923545..21234c9 100644
--- a/lib/gzip.c
+++ b/lib/gzip.c
@@ -192,9 +192,14 @@ int prepare_GZIP_loadable(int fd, struct loadable *loadable, int *wide)
     mark(&keep_unzipped);
 
     outptrlim = outptr + MAX_GZ_LEN;
-    printf("uncompressing %s to 0x%p", orig_filename, outptr);
+    if (0)
+	printf("uncompressing %s to 0x%p", orig_filename, outptr);
+    else
+	printf("uncompressing Linux kernel");
 
     bytes_len = decompress(outptr, outptrlim);
+    if (bytes_len > MAX_GZ_LEN)
+	printf("\nERROR: Internal buffer MAX_GZ_LEN too small!");
     if (bytes_len < 0) {
 	release(release_all_mallocs);
 	return PREPARE_CONTINUE;