From: Pavel Charvat <pchar@ucw.cz>
Date: Mon, 12 Feb 2018 11:17:52 +0000 (+0100)
Subject: Main recio: Fixed crashes when a second rec_io_add() followed rec_io_del().
X-Git-Tag: v6.5.9~4
X-Git-Url: http://mj.ucw.cz/gitweb/?a=commitdiff_plain;h=20d5027ab105ac1c174c7eefc00c7e482e99da7a;p=libucw.git

Main recio: Fixed crashes when a second rec_io_add() followed rec_io_del().
---

diff --git a/ucw/main-rec.c b/ucw/main-rec.c
index f13758e3..d3d4a589 100644
--- a/ucw/main-rec.c
+++ b/ucw/main-rec.c
@@ -58,13 +58,18 @@ rec_io_del(struct main_rec_io *rio)
   hook_del(&rio->start_read_hook);
   file_del(&rio->file);
 
+  rio->file.read_handler = NULL;
+  rio->read_started = rio->read_running = 0;
+  rio->read_avail = rio->read_prev_avail = 0;
   if (rio->read_buf)
     {
       DBG("RIO: Freeing read buffer");
       xfree(rio->read_buf);
-      rio->read_buf = NULL;
+      rio->read_buf = rio->read_rec_start = NULL;
     }
 
+  rio->file.write_handler = NULL;
+  rio->write_watermark = 0;
   struct rio_buffer *b;
   while ((b = clist_remove_head(&rio->idle_write_buffers)) || (b = clist_remove_head(&rio->busy_write_buffers)))
     {