grub2/0151-grub-core-fs-fshelp.c-find_file-Set-oldnode-to-zero-.patch

From cfdae836643ea68d85b8d0aa37df635600d8d102 Mon Sep 17 00:00:00 2001
From: Vladimir 'phcoder' Serbinenko <phcoder@gmail.com>
Date: Fri, 1 Feb 2013 21:51:09 +0100
Subject: [PATCH 151/471] 	* grub-core/fs/fshelp.c (find_file): Set
 oldnode to zero after 	freeing it.

---
 ChangeLog             | 5 +++++
 grub-core/fs/fshelp.c | 8 +++++++-
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/ChangeLog b/ChangeLog
index 2e681c1..f5396fe 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,10 @@
 2013-02-01  Vladimir Serbinenko  <phcoder@gmail.com>
 
+	* grub-core/fs/fshelp.c (find_file): Set oldnode to zero after
+	freeing it.
+
+2013-02-01  Vladimir Serbinenko  <phcoder@gmail.com>
+
 	Implement USBDebug (full USB stack variant).
 
 2013-02-01  Vladimir Serbinenko  <phcoder@gmail.com>
diff --git a/grub-core/fs/fshelp.c b/grub-core/fs/fshelp.c
index 7e557c3..11a1259 100644
--- a/grub-core/fs/fshelp.c
+++ b/grub-core/fs/fshelp.c
@@ -147,6 +147,7 @@ find_file (const char *currpath, grub_fshelp_node_t currroot,
 	      free_node (ctx->currnode, ctx);
 	      free_node (ctx->oldnode, ctx);
 	      ctx->currnode = 0;
+	      ctx->oldnode = 0;
 	      return grub_error (GRUB_ERR_SYMLINK_LOOP,
 				 N_("too deep nesting of symlinks"));
 	    }
@@ -158,6 +159,7 @@ find_file (const char *currpath, grub_fshelp_node_t currroot,
 	  if (!symlink)
 	    {
 	      free_node (ctx->oldnode, ctx);
+	      ctx->oldnode = 0;
 	      return grub_errno;
 	    }
 
@@ -177,12 +179,16 @@ find_file (const char *currpath, grub_fshelp_node_t currroot,
 	  if (grub_errno)
 	    {
 	      free_node (ctx->oldnode, ctx);
+	      ctx->oldnode = 0;
 	      return grub_errno;
 	    }
 	}
 
       if (ctx->oldnode != ctx->currnode)
-	free_node (ctx->oldnode, ctx);
+	{
+	  free_node (ctx->oldnode, ctx);
+	  ctx->oldnode = 0;
+	}
 
       /* Found the node!  */
       if (! next || *next == '\0')
-- 
1.8.2.1