nginx 0.1.5 *) Bugfix: on Solaris and Linux there may be too many "recvmsg() returned not enough data" alerts. *) Bugfix: there were the "writev() failed (22: Invalid argument)" errors on Solaris in proxy mode without sendfile. On other platforms that do not support sendfile at all the process got caught in an endless loop. *) Bugfix: segmentation fault on Solaris in proxy mode and using sendfile. *) Bugfix: segmentation fault on Solaris. *) Bugfix: on-line upgrade did not work on Linux. *) Bugfix: the ngx_http_autoindex_module module did not escape the spaces, the quotes, and the percent signs in the directory listing. *) Change: the decrease of the copy operations. *) Feature: the userid_p3p directive.

--- a/src/os/unix/ngx_channel.c
+++ b/src/os/unix/ngx_channel.c
@@ -120,9 +120,14 @@ ngx_int_t ngx_read_channel(ngx_socket_t 
         return NGX_ERROR;
     }
 
+    if (n == 0) {
+        ngx_log_debug0(NGX_LOG_DEBUG_CORE, log, 0, "recvmsg() returned zero");
+        return NGX_ERROR;
+    }
+
     if ((size_t) n < sizeof(ngx_channel_t)) {
         ngx_log_error(NGX_LOG_ALERT, log, 0,
-                      "recvmsg() returned not enough data");
+                      "recvmsg() returned not enough data: %uz", n);
         return NGX_ERROR;
     }