# ./pullrev.sh 1894152
http://svn.apache.org/viewvc?view=revision&revision=1894152

--- httpd-2.4.51/modules/filters/mod_deflate.c.r1894152
+++ httpd-2.4.51/modules/filters/mod_deflate.c
@@ -835,6 +835,7 @@
     while (!APR_BRIGADE_EMPTY(bb))
     {
         apr_bucket *b;
+        apr_status_t rv;
 
         /*
          * Optimization: If we are a HEAD request and bytes_sent is not zero
@@ -914,8 +915,6 @@
         }
 
         if (APR_BUCKET_IS_FLUSH(e)) {
-            apr_status_t rv;
-
             /* flush the remaining data from the zlib buffers */
             zRC = flush_libz_buffer(ctx, c, f->c->bucket_alloc, deflate,
                                     Z_SYNC_FLUSH, NO_UPDATE_CRC);
@@ -947,7 +946,12 @@
         }
 
         /* read */
-        apr_bucket_read(e, &data, &len, APR_BLOCK_READ);
+        rv = apr_bucket_read(e, &data, &len, APR_BLOCK_READ);
+        if (rv) {
+            ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r, APLOGNO(10298)
+                          "failed reading from %s bucket", e->type->name);
+            return rv;
+        }
         if (!len) {
             apr_bucket_delete(e);
             continue;
